Husqvarna 440e II Chain Saw Instructions
- June 13, 2024
- Husqvarna
Table of Contents
Husqvarna 440e II Chain Saw
Product Information
- Product Name: Chain Saw
- Model: 435 II, 435e II, 440 II, 440e II
- Manufacturer: Unknown
- Website: Manual Hub
Product Usage Instructions
- Introduction:
-
* This chain saw is designed for cutting tasks and should be used with caution.- Before using the chain saw, please read and understand the operator’s manual carefully.
-
What is What on the Chain Saw:
- The manual does not provide specific information about the components of the chain saw. Please refer to the operator’s manual for detailed information.
-
General Safety Precautions:
Before using a new chain saw, it is important to follow these safety precautions:- Always use common sense and exercise caution while operating the chain saw.
- Wear appropriate personal protective equipment, such as approved protective gloves and protective goggles or a visor.
- Ensure that the machine’s safety equipment is in good working condition.
- Familiarize yourself with the cutting equipment and its proper usage.
-
Cutting Equipment:
- The manual does not provide specific instructions for using the cutting equipment. Please refer to the operator’s manual for detailed instructions on how to use and maintain the cutting equipment.
Note: The provided text-extract from the user manual is incomplete and does not contain comprehensive product information or detailed usage instructions. For further assistance, please refer to the complete operator’s manual or contact the manufacturer directly.
- The manual does not provide specific instructions for using the cutting equipment. Please refer to the operator’s manual for detailed instructions on how to use and maintain the cutting equipment.
EN Operator’s Manual, 7-31
ES Manual de instrucciones, 217-244
SE Bruksanvisning, 32-56
PT Instruções para o uso, 245-272
DK Brugsanvisning, 57-81 NO Bruksanvisning, 82-106 FI Käyttöohje, 107-132 FR Manuel d’utilisation, 133-160
IT Istruzioni per l’uso, 273-299 EE Käsitsemisõpetus, 300-323 LV Lietoanas pamÇc¥ba, 324-347 LT Naudojimosi instrukcijos, 348-372
DE Bedienungsanweisung, 161-188 SI Navodila za uporabo, 373-396
NL Gebruiksaanwijzing, 189-216
435 II, 435e II
440 II, 440e II
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1155355-38 Rev.3 2014-11-24
KEY TO SYMBOLS
Symbols on the machine:
WARNING! Chain saws can be dangerous! Careless or incorrect use can result in
serious or fatal injury to the operator or others.
Please read the operator’s manual carefully and make sure you understand the
instructions before using the machine.
Always wear:
· Approved protective helmet
· Approved hearing protection
· Protective goggles or a visor
Symbols in the operator’s
manual:
Switch off the engine before carrying out any checks or maintenance. CAUTION!
The start/stop switch automatically returns to run position. In order to
prevent unintentional starting, the spark plug cap must be removed from the
spark plug when assembling, checking and/or performing maintenance.
Always wear approved protective gloves.
This product is in accordance with applicable EC directives.
Regular cleaning is required.
Noise emission to the environment according to the European Community’s Directive. The machine’s emission is specified in the Technical data chapter and on the label.
Visual check.
Protective goggles or a visor must be worn.
Ignition; choke: Set the choke control in the choke position. This should
automatically set the stop switch to the start position.
Refuelling.
Refuelling. Filling with oil and adjusting oil flow.
Chain oil fill. Air purge Adjustment of the oil pump.
The chain brake must be engaged when the chain saw is started.
WARNING! Kickback may occur when the nose or tip of the guide bar touches an
object, and cause a lightning fast reverse reaction, kicking the guide bar up
and towards the operator. May cause serious personal injury.
Chain brake, activated (right) Chain brake, not activated (left)
Other symbols/decals on the machine refer to special certification requirements for certain markets.
1155355-38 Rev.3 2014-11-24
INTRODUCTION
Dear Customer,
Congratulations on your choice to buy a Husqvarna product! Husqvarna is based
on a tradition that dates back to 1689, when the Swedish King Karl XI ordered
the construction of a factory on the banks of the Husqvarna River, for
production of muskets. The location was logical, since water power was
harnessed from the Huskvarna River to create the water-powered plant. During
the more than 300 years in existence, the Husqvarna factory has produced a lot
of different products, from wood stoves to modern kitchen appliances, sewing
machines, bicycles, motorcycles etc. In 1956, the first motor driven lawn
mowers appeared, followed by chain saws in 1959, and it is within this area
Husqvarna is working today.
Today Husqvarna is one of the leading manufacturers in the world of forest and
garden products, with quality as our highest priority. The business concept is
to develop, manufacture and market motor-driven products for forestry and
gardening, as well as for the building and construction industry. Husqvarnas
aim is also to be at the front edge for ergonomics, usability, security and
environmental protection. That is the reason why we have developed many
different features to add to our products within these areas.
We are convinced that you will appreciate with great satisfaction the quality
and performance of our product for a very long time to come. The purchase of
one of our products gives you access to professional help with repairs and
service whenever this may be necessary. If the retailer who sells your machine
is not one of our authorised dealers, ask for the address of your nearest
service workshop.
It is our wish that you will be satisfied with your product and that it will
be your companion for a long time. Think of this operators manual as a
valuable document. By following its content (usage, service, maintenance,
etc), the life span and the second-hand value of the machine can be extended.
If you sell this machine, make sure that the operators manual is passed on to
the buyer.
Thank you for using a Husqvarna product.
Husqvarna AB has a policy of continuous product development and therefore
reserves the right to modify the design and appearance of products without
prior notice.
What is what on the chain saw? (1) 1 Cylinder cover 2 Air purge 3 Start reminder 4 Combined start and stop switch 5 Rear handle 6 Information and warning decal 7 Fuel tank 8 Adjuster screws carburettor 9 Starter handle 10 Starter 11 Chain oil tank 12 Product and serial number plate 13 Felling direction mark 14 Front handle 15 Front hand guard 16 Muffler 17 Saw chain 18 Bar tip sprocket 19 Guide bar 20 Spike bumper 21 Chain catcher 22 Chain tensioning screw (435 II, 440 II) 23 Clutch cover (435 II, 440 II) 24 Right hand guard 25 Throttle trigger 26 Throttle lockout 27 Clutch cover (435e II, 440e II) 28 Chain tensioner wheel 29 Knob 30 Operators manual 31 Combination spanner 32 Guide bar cover
1155355-38 Rev.3 2014-11-24
English 9
GENERAL SAFETY PRECAUTIONS
Before using a new chain saw
· Please read this manual carefully.
· (1) – (117) refer to figures on p. 2-6.
· Check that the cutting equipment is correctly fitted and adjusted. See
instructions under the heading Assembly.
· Refuel and start the chain saw. See the instructions under the headings Fuel
Handling and Starting and Stopping.
· Do not use the chain saw until sufficient chain oil has reached the chain.
See instructions under the heading Cutting equipment.
· Long-term exposure to noise can result in permanent hearing impairment. So
always use approved hearing protection.
!
WARNING! Under no circumstances may the design of the machine be modified
without the permission of the
manufacturer. Always use original
accessories. Non-authorized
modifications and/or accessories can
result in serious personal injury or the
death of the operator or others.
!
WARNING! A chain saw is a dangerous tool if used carelessly or incorrectly and
can cause serious, even fatal injuries. It
is very important that you read and
understand the contents of this
operator’s manual.
!
WARNING! The inside of the muffler contain chemicals that may be
carcinogenic. Avoid contact with these
elements in the event of a damaged
muffler.
!
WARNING! Long term inhalation of the engine’s exhaust fumes, chain oil mist
and dust from sawdust can represent a
health risk.
!
WARNING! Never allow children to use or be in the vicinity of the machine. As the
machine is equipped with a spring-
loaded stop switch and can be started by
low speed and force on the starter
handle, even small children under some
circumstances can produce the force
necessary to start the machine. This can
mean a risk of serious personal injury.
Therefore remove the spark plug cap
when the machine is not under close
supervision.
Important
IMPORTANT!
This chain saw for forest service is designed for forest work such as felling,
limbing and cutting.
National regulation can restrict the use of the machine.
You should only use the saw with the bar and chain combinations we recommend
in the chapter Technical data.
Never use the machine if you are fatigued, while under the influence of
alcohol or drugs, medication or anything that could affect your vision,
alertness, coordination or judgement.
Wear personal protective equipment. See instructions under the “Personal
protective equipment” heading.
Do not modify this product or use it if it appears to have been modified by
others.
Never use a machine that is faulty. Carry out the safety checks, maintenance
and service instructions described in this manual. Some maintenance and
service measures must be carried out by trained and qualified specialists. See
instructions under the Maintenance heading.
Never use any accessories other than those recommended in this manual. See
instructions under the headings Cutting equipment and Technical data.
CAUTION! Always wear protective glasses or a face visor to reduce the risk of
injury from thrown objects. A chain saw is capable of throwing objects, such
as wood chips, small pieces of wood, etc, at great force. This can result in
serious injury, especially to the eyes.
!
WARNING! This machine produces an electromagnetic field during operation.
This field may under some
circumstances interfere with active or
passive medical implants. To reduce the
risk of serious or fatal injury, we
recommend persons with medical
implants to consult their physician and
the medical implant manufacturer before
operating this machine.
!
WARNING! Running an engine in a confined or badly ventilated area can
result in death due to asphyxiation or
carbon monoxide poisoning.
WARNING! Faulty cutting equipment or
!
the wrong combination of bar and saw
chain increases the risk of kickback!
Only use the bar/saw chain combinations
we recommend, and follow the filing
instructions. See instructions under the
heading Technical data.
10 English
1155355-38 Rev.3 2014-11-24
GENERAL SAFETY PRECAUTIONS
Always use common sense (2)
It is not possible to cover every conceivable situation you can face when
using a chain saw. Always exercise care and use your common sense. Avoid all
situations which you consider to be beyond your capability. If you still feel
uncertain about operating procedures after reading these instructions, you
should consult an expert before continuing. Do not hesitate to contact your
dealer or us if you have any questions about the use of the chain saw. We will
willingly be of service and provide you with advice as well as help you to use
your chain saw both efficiently and safely. Attend a training course in chain
saw usage if possible. Your dealer, forestry school or your library can
provide information about which training materials and courses are available.
Work is constantly in progress to improve the design and technology –
improvements that increase your safety and efficiency. Visit your dealer
regularly to see whether you can benefit from new features that have been
introduced.
Personal protective equipment
!
WARNING! Most chain saw accidents happen when the chain touches the
operator. You must use approved
personal protective equipment whenever
you use the machine. Personal protective
equipment cannot eliminate the risk of
injury but it will reduce the degree of
injury if an accident does happen. Ask
your dealer for help in choosing the right
equipment.
· Approved protective helmet · Hearing protection · Protective goggles or a
visor · Gloves with saw protection · Trousers with saw protection · Boots with
saw protection, steel toe-cap and non-slip
sole · Always have a first aid kit nearby. · Fire Extinguisher and Shovel
Generally clothes should be close-fitting without restricting your freedom of
movement.
IMPORTANT! Sparks can come from the muffler, the bar and chain or other sources. Always have fire extinguishing tools available if you should need them. Help prevent forest fires.
Machines safety equipment
In this section the machine’s safety features and their function are
explained. For inspection and maintenance see instructions under the heading
Checking, maintaining and servicing chain saw safety equipment. See
instructions under the heading, What is what?, to find where these parts are
located on your machine.
The life span of the machine can be reduced and the risk of accidents can increase if machine maintenance is not carried out correctly and if service and/or repairs are not carried out professionally. If you need further information please contact your nearest service workshop.
!
WARNING! Never use a machine with defective safety components. Safety
equipment must be inspected and
maintained. See instructions under the
heading Checking, maintaining and
servicing chain saw safety equipment. If
your machine does not pass all the
checks, take the saw to a servicing
dealer for repair.
Chain brake and front hand guard
Your chain saw is equipped with a chain brake that is designed to stop the
chain if you get a kickback. The chain brake reduces the risk of accidents,
but only you can prevent them. (3)
Take care when using your saw and make sure the kickback zone of the bar never
touches any object. (4)
· The chain brake (A) can either be activated manually (by your left hand) or
automatically by the inertia release mechanism. (5)
· The brake is applied when the front hand guard (B) is pushed forwards. (5)
· This movement activates a spring-loaded mechanism that tightens the brake
band (C) around the engine drive system (D) (clutch drum). (6)
· The front hand guard is not designed solely to activate the chain brake.
Another important feature is that it reduces the risk of your left hand
hitting the chain if you lose grip of the front handle.
· The chain brake must be engaged when the chain saw is started to prevent the
saw chain from rotating.
(55)
· Use the chain brake as a “parking brake” when starting and when moving over
short distances, to reduce the risk of moving chain accidentally hitting your
leg or anyone or anything close by. Do not leave the chain saw switched on
with the chain brake activated for long periods. The chain saw can become very
hot.
· The chain brake is released by moving the front hand guard marked “PULL BACK
TO RESET” back, towards the front handle.
· Kickback can be very sudden and violent. Most kickbacks are minor and do not
always activate the chain brake. If this happens you should hold the chain saw
firmly and not let go.
· The way the chain brake is activated, either manually or automatically by
the inertia release mechanism, depends on the force of the kickback and the
position of the chain saw in relation to the object that the kickback zone of
the bar strikes.
1155355-38 Rev.3 2014-11-24
English 11
GENERAL SAFETY PRECAUTIONS
If you get a violent kickback while the kickback zone of the bar is farthest
away from you the chain brake is designed to be activated by the inertia in
the kickback direction. (7)
If the kickback is less violent or the kickback zone of the bar is closer to
you the chain brake will be activated manually by the movement of your left
hand.
· In the felling position the left hand is in a position that makes manual
activation of the chain brake impossible. With this type of grip, that is when
the left hand is placed so that it cannot affect the movement of the front
hand guard, the chain brake can only be activated by the inertia action. (8)
Will my hand always activate the chain
brake during a kickback?
No. It takes a certain force to move the hand guard forward. If your hand only
lightly touches the front guard or slips over it, the force may not be enough
to trigger the chain brake. You should also maintain a firm grip of the chain
saw handles while working. If you do and experience a kickback, your hand may
never leave the front handle and will not activate the chain brake, or the
chain brake will only activate after the saw has swung around a considerable
distance. In such instances, the chain brake might not have enough time to
stop the saw chain before it touches you.
There are also certain positions in which your hand cannot reach the front
hand guard to activate the chain brake; for example, when the saw chain is
held in felling position.
Will my inertia activated chain brake
always activate during kickback in the
event of a kickback?
No. First your brake must be in working order. Testing the brake is simple,
see instructions under the heading Checking, maintaining and servicing chain
saw safety equipment. We recommend you do before you begin each work session.
Second the kickback must be strong enough to activate the chain brake. If the
chain brake is too sensitive it would activate all the time which would be a
nuisance.
Will my chain brake always protect me
from injury in the event of a kickback?
No. First, the chain brake must be in working order to provide the intended
protection. Second, it must be activated during the kickback as described
above to stop the saw chain. Third, the chain brake may be activated but if
the bar is too close to you the brake might not have enough time to slow down
and stop the chain before the chain saw hits you.
Only you and proper working technique can eliminate kickback and its danger.
Throttle lockout
The throttle lockout is designed to prevent accidental operation of the
throttle control. When you press the lock (A) (i.e. when you grasp the handle)
it releases the throttle control (B). When you release the handle the throttle
control and the throttle lockout both move back to their original positions.
This arrangement means that the throttle control is automatically locked at
the idle setting. (9)
Chain catcher
The chain catcher is designed to catch the chain if it snaps or jumps off.
This should not happen if the chain is properly tensioned (see instructions
under the heading Assembly) and if the bar and chain are properly serviced and
maintained (see instructions under the heading General working instructions).
(10)
Right hand guard
Apart from protecting your hand if the chain jumps or snaps, the right hand
guard stops branches and twigs from interfering with your grip on the rear
handle. (11)
Vibration damping system
Your machine is equipped with a vibration damping system that is designed to
minimize vibration and make operation easier.
The machines vibration damping system reduces the transfer of vibration
between the engine unit/cutting equipment and the machines handle unit.The
body of the chain saw, including the cutting equipment, is insulated from the
handles by vibration damping units.
Cutting hardwoods (most broadleaf trees) creates more vibration than cutting
softwoods (most conifers). Cutting with cutting equipment that is blunt or
faulty (wrong type or badly sharpened) will increase the vibration level.
!
WARNING! Overexposure to vibration can lead to circulatory damage or nerve
damage in people who have impaired
circulation. Contact your doctor if you
experience symptoms of overexposure
to vibration. Such symptoms include
numbness, loss of feeling, tingling,
pricking, pain, loss of strength, changes
in skin colour or condition. These
symptoms normally appear in the
fingers, hands or wrists. These
symptoms may be increased in cold
temperatures.
Stop switch
Use the stop switch to switch off the engine. (12)
12 English
1155355-38 Rev.3 2014-11-24
GENERAL SAFETY PRECAUTIONS
Muffler
The muffler is designed to keep noise levels to a minimum and to direct
exhaust fumes away from the user.
!
WARNING! The exhaust fumes from the engine are hot and may contain sparks
which can start a fire. Never start the
machine indoors or near combustible
material!
In areas with a hot, dry climate there is a high risk of fires. These areas
are sometimes subject to government rules requiring among other things the
muffler must be equipped with an approved type of spark arrestor mesh.
(13)
When fitting the mesh, make sure that the mesh is inserted in the right
position. If necessary, use the combination spanner to insert or remove the
mesh.
CAUTION! The muffler gets very hot during and after use. This also applies during idling. Be aware of the fire hazard, especially when working near flammable substances and/or vapours.
!
WARNING! Never use a saw without a muffler, or with a damaged muffler. A
damaged muffler may substantially
increase the noise level and the fire
hazard. Keep fire fighting equipment
handy. If a spark arrestor screen is
required in your area, never use the saw
without or with a broken spark arrestor
screen.
· Keep cutting equipment well lubricated and properly maintained! A poorly
lubricated chain is more likely to break and lead to increased wear on the
bar, chain and drive sprocket.
Cutting equipment designed to reduce kickback
!
WARNING! Faulty cutting equipment or the wrong combination of bar and saw
chain increases the risk of kickback!
Only use the bar/saw chain combinations
we recommend, and follow the filing
instructions. See instructions under the
heading Technical data.
The only way to avoid kickback is to make sure that the kickback zone of the
bar never touches anything. By using cutting equipment with “built-in”
kickback reduction and keeping the chain sharp and wellmaintained you can
reduce the effects of kickback.
Guide bar
The smaller the tip radius the lower the chance of kickback.
Saw chain
A chain is made up of a number of links, which are available in standard and
low-kickback versions.
IMPORTANT! No saw chain design eliminates the danger of kickback.
Cutting equipment
This section describes how to choose and maintain your cutting equipment in
order to: · Reduce the risk of kickback. · Reduce the risk of the saw chain
breaking or jumping
off the bar. · Obtain optimal cutting performance. · Extend the life of
cutting equipment. · Avoid increasing vibration levels.
General rules
· Only use cutting equipment recommended by us! See instructions under the
heading Technical data.
· Keep the chain’s cutting teeth properly sharpened! Follow our instructions
and use the recommended file gauge. A damaged or badly sharpened chain
increases the risk of accidents.
· Maintain the correct depth gauge setting! Follow our instructions and use
the recommended depth gauge clearance. Too large a clearance increases the
risk of kickback.
· Keep the chain properly tensioned! If the chain is slack it is more likely
to jump off and lead to increased wear on the bar, chain and drive sprocket.
!
WARNING! Any contact with a rotating saw chain can cause extremely serious
injuries.
Some terms that describe the bar and chain
To maintain the safety features of the cutting equipment, you should replace a
worn or damaged bar or chain with a bar and chain combinations recommended by
Husqvarna. See instructions under the heading Technical Data for a list of
replacement bar and chain combinations we recommend.
Guide bar
· Length (inches/cm)
· Number of teeth on bar tip sprocket (T).
· Chain pitch (inches). The spacing between the drive links of the chain must
match the spacing of the teeth on the bar tip sprocket and drive sprocket.
(14)
· Number of drive links. The number of drive links is determined by the length
of the bar, the chain pitch and the number of teeth on the bar tip sprocket.
· Bar groove width (inches/mm). The groove in the bar must match the width of
the chain drive links.
· Chain oil hole and hole for chain tensioner. The bar must be matched to the
chain saw design. (15)
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English 13
GENERAL SAFETY PRECAUTIONS
Saw chain
· Chain pitch (inches) (14) · Drive link width (mm/inches) (16) · Number of
drive links. (17)
Sharpening your chain and adjusting depth gauge setting
General information on sharpening cutting teeth · Never use a blunt chain.
When the chain is blunt you
have to exert more pressure to force the bar through the wood and the chips
will be very small. If the chain is very blunt it will produce wood powder and
no chips or shavings. · A sharp chain eats its way through the wood and
produces long, thick chips or shavings. · The cutting part of the chain is
called the cutter and consists of a cutting tooth (A) and the depth gauge (B).
The cutters cutting depth is determined by the difference in height between
the two (depth gauge setting). (18) When you sharpen a cutting tooth there are
four important factors to remember. 1 Filing angle (19) 2 Cutting angle (20) 3
File position (21) 4 Round file diameter It is very difficult to sharpen a
chain correctly without the right equipment. We recommend that you use our
file gauge. This will help you obtain the maximum kickback reduction and
cutting performance from your chain. (22) See instructions under the heading
Technical data for information about sharpening your chain.
WARNING! Departure from the
!
sharpening instructions considerably
increases the risk of kickback.
General advice on adjusting depth gauge setting
· When you sharpen the cutting tooth (A) the depth gauge setting (C) will
decrease. To maintain optimal cutting performance the depth gauge (B) has to
be filed down to achieve the recommended depth gauge setting. See instructions
under the heading Technical data to find the correct depth gauge setting for
your particular chain. (24)
WARNING! The risk of kickback is
!
increased if the depth gauge setting is
too large!
Adjustment of depth gauge setting
· The cutting teeth should be newly sharpened before adjusting the depth gauge
setting. We recommend that you adjust the depth gauge setting every third time
you sharpen the cutting teeth. NOTE! This recommendation assumes that the
length of the cutting teeth is not reduced excessively.
· You will need a flat file and a depth gauge tool. We recommend that you use
our depth gauge tool to acheive the correct depth gauge setting and bevel for
the depth gauge.
· Place the depth gauge tool over the chain. Detailed information regarding
the use of the depth gauge tool, will be found on the package for the depth
gauge tool. Use the flat file to file off the tip of the depth gauge that
protrudes through the depth gauge tool. The depth gauge setting is correct
when you no longer feel resistance as you draw the file along the depth gauge
tool. (25)
Tensioning the chain
Sharpening cutting teeth
To sharpen cutting teeth you will need a round file and a file gauge. See
instructions under the heading Technical data for information on the size of
file and gauge that are recommended for the chain fitted to your chain saw.
· Check that the chain is correctly tensioned. A slack chain will move
sideways, making it more difficult to sharpen correctly.
· Always file cutting teeth from the inside face. Reduce the pressure on the
return stroke. File all the teeth on one side first, then turn the chain saw
over and file the teeth on the other side.
· File all the teeth to the same length. When the length of the cutting teeth
is reduced to 4 mm (5/32″) the chain is worn out and should be replaced. (23)
14 English
!
WARNING! A slack chain may jump off and cause serious or even fatal injury.
The more you use a chain the longer it becomes. It is therefore important to
adjust the chain regularly to take up the slack.
Check the chain tension every time you refuel. NOTE! A new chain has a
running-in period during which you should check the tension more frequently.
Tension the chain as tightly as possible, but not so tight that you cannot
pull it round freely by hand. (26)
1155355-38 Rev.3 2014-11-24
435 II, 440 II
GENERAL SAFETY PRECAUTIONS
Never use waste oil! Using waste oil can be dangerous to you and damage the
machine and environment.
· Loosen the bar nut that holds the clutch cover and chain brake. Use the
combination spanner. Then retighten the bar nut as tightly as you can by hand.
(27)
· Raise the tip of the bar and stretch the chain by tightening the chain
tensioning screw using the combination spanner. Tighten the chain until it
does not sag from the underside of the bar. (28)
· Use the combination spanner to tighten the bar nut while holding up the tip
of the bar. Check that you can pull the saw chain round freely by hand, and
that there is no slack on the underside of the bar. (29)
The position of the chain tensioning screw on our chain saws varies from model
to model. See instructions under the heading What is what? to find out where
it is on your model.
435e II, 440e II
· Release the knob by folding it out. (30)
· Turn the knob anti clockwise to loosen the bar cover. (31)
· Adjust the tension on the chain by turning the wheel down (+) for tighter
tension and up (-) to loosen the tension. (32)
· Tighten the bar clutch by turning the knob clockwise. (33)
· Fold the knob back in to lock the tensioning. (34)
Lubricating cutting equipment
!
WARNING! Poor lubrication of cutting equipment may cause the chain to snap,
which could lead to serious, even fatal
injuries.
IMPORTANT! When using vegetable based saw chain oil, dismantle and clean the
groove in the bar and saw chain before long-term storage. Otherwise there is a
risk of the saw chain oil oxidizing, which will result in the saw chain
becoming stiff and the bar tip sprocket jamming.
Filling with chain oil
· All our chain saws have an automatic chain lubrication system. On some
models the oil flow is also adjustable.
· The saw chain oil tank and the fuel tank are designed so that the fuel runs
out before the saw chain oil.
However, this safety feature requires that you use the right sort of chain oil
(if the oil is too thin it will run out before the fuel), and that you adjust
the carburetor as recommended (a lean mixture may mean that the fuel lasts
longer than the oil) and that you also use the recommended cutting equipment
(a bar that is too long will use more chain oil).
Checking chain lubrication
· Check the chain lubrication each time you refuel.
Aim the tip of the bar at a light coloured surface about 20 cm (8 inches)
away. After 1 minute running at 3/4 throttle you should see a distinct line of
oil on the light surface.
If the chain lubrication is not working:
· Check that the oil channel in the bar is not obstructed. Clean if necessary.
(35)
· Check that the groove in the edge of the bar is clean. Clean if necessary.
(36)
· Check that the bar tip sprocket turns freely and that the lubricating hole
in the tip sprocket is not blocked. Clean and lubricate if necessary. (37)
If the chain lubrication system is still not working after carrying out the
above checks and associated measures you should contact your service agent.
Chain drive sprocket
Chain oil
Chain oil must demonstrate good adhesion to the chain and also maintain its
flow characteristics regardless of whether it is warm summer or cold winter
weather.
As a chain saw manufacturer we have developed an optimal chain oil which, with
its vegetable oil base, is also biodegradable. We recommend the use of our own
oil for both maximum chain life and to minimise environmental damage. If our
own chain oil is not available, standard chain oil is recommended.
The clutch drum is fitted with one of the following drive sprockets:
A Spur sprocket (the chain sprocket is welded on the drum)
B Rim sprocket (replaceable) (38)
Regularly check the degree of wear on the drive sprocket. Replace if wear is
excessive. Replace the drive sprocket whenever you replace the chain.
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English 15
GENERAL SAFETY PRECAUTIONS
Needle bearing lubrication
!
WARNING! Most chain saw accidents happen when the chain touches the
operator.
Both versions of sprockets have a needle bearing on the drive shaft, which has
to be greased regularly (once a week). CAUTION! Use a high-quality bearing
grease or engine oil.
See instructions under the heading Maintenance, Needle bearing lubrication.
Checking wear on cutting equipment
Wear personal protective equipment. See instructions under the “Personal
protective equipment” heading.
Do not tackle any job that you feel you are not adequately trained for. See
instructions under the headings Personal protective equipment, How to avoid
kickback, Cutting equipment and General working instructions.
Check the chain daily for:
· Visible cracks in rivets and links.
· Whether the chain is stiff.
· Whether rivets and links are badly worn.
Replace the saw chain if it exhibits any of the points above.
We recommend you compare the existing chain with a new chain to decide how
badly the existing chain is worn.
File all the teeth to the same length. When the length of the cutting teeth is
reduced to 4 mm (5/32″) the chain is worn out and should be replaced. (23)
Guide bar
Avoid situations where there is a risk of kickback. See instructions under the
heading Machines safety equipment.
Use the recommended protective equipment and check its condition. See
instructions under the heading General working instructions.
Check that all the chain saw safety features are working. See instructions
under the headings General working instructions and General safety
precautions.
Check regularly:
· Whether there are burrs on the edges of the bar. Remove these with a file if
necessary.
· Whether the groove in the bar has become badly worn. Replace the bar if
necessary.
· Whether the tip of the bar is uneven or badly worn. If a hollow forms on the
underside of the bar tip this is due to running with a slack chain.
· To prolong the life of the bar you should turn it over regularly.
16 English
1155355-38 Rev.3 2014-11-24
ASSEMBLY
Fitting the bar and chain
!
WARNING! Always wear gloves, when working with the chain.
435 II, 440 II
· Check that the chain brake is in disengaged position by moving the front
hand guard towards the front handle. (39)
· Unscrew the bar nut and remove the clutch cover (chain brake). Take off the
transportation ring (A). (40)
· Fit the bar over the bar bolt. Place the bar in its rearmost position. Place
the chain over the drive sprocket and in the groove on the bar. Begin on the
top side of the bar. (41)
· Make sure that the edges of the cutting links are facing forward on the top
edge of the bar.
· Mount the clutch cover and remember to fit the chain adjuster pin in the
hole in the bar. Check that the drive links of the chain fit correctly over
the drive sprocket and that the chain is correctly located in the groove in
the bar. Tighten the bar nut with your fingers.
· Tension the chain by turning the chain tensioning screw clockwise using the
combination spanner. The chain should be tensioned until it does not sag from
the underside of the bar. (42)
· The chain is correctly tensioned when there is no slack on the underside of
the bar, and it can still be turned easily by hand. Tighten the bar nut with
the combination spanner while holding up the tip of the bar. (43)
· When fitting a new chain, the chain tension has to be checked frequently
until the chain is run-in. Check the chain tension regularly. A correctly
tensioned chain ensures good cutting performance and long life. (44)
435e II, 440e II
· Check that the chain brake is in disengaged position by moving the front
hand guard towards the front handle. (45)
· Loosen the chain tensioner wheel and remove the clutch cover (chain brake).
Remove the transport guard. (A) (46)
· Fit the bar over the bar bolts. Place the bar in its rearmost position.
Place the chain over the drive sprocket locate it in the groove on the bar.
Begin on the top edge of the bar. (41)
· Make sure that the edges of the cutting links are facing forward on the top
edge of the bar.
· Mount the clutch cover and remember to fit the chain adjuster pin in the
hole in the bar. Check that the drive
links of the chain fit correctly over the drive sprocket and that the chain is
correctly located in the groove in the bar.
· Tension the chain by turning the wheel down (+). The chain should be
tensioned until it does not sag from the underside of the bar. (32)
· The chain is correctly tensioned when it does not sag from the underside of
the bar, but can still be turned easily by hand. Hold up the bar tip and
tighten the bar knob by turning the knob clockwise. (33)
· When fitting a new chain, the chain tension has to be checked frequently
until the chain is run-in. Check the chain tension regularly. A correctly
tensioned chain ensures good cutting performance and long life. (44)
Fitting a spike bumper
To fit a spike bumper contact your service agent. (47)
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English 17
FUEL HANDLING
Fuel
Note! The machine is equipped with a two-stroke engine and must always be run
using a mixture of petrol and twostroke oil. It is important to accurately
measure the amount of oil to be mixed to ensure that the correct mixture is
obtained. When mixing small amounts of fuel, even small inaccuracies can
drastically affect the ratio of the mixture.
!
WARNING! Always ensure there is adequate ventilation when handling fuel.
Petrol
· Use good quality unleaded or leaded petrol.
· The lowest recommended octane grade is 90 (RON). If you run the engine on a
lower octane grade than 90 so-called knocking can occur. This gives rise to a
high engine temperature and increased bearing load, which can result in
serious engine damage.
· When working with continuous high revs (e.g. limbing) a higher octane is
recommended.
Environment fuel
HUSQVARNA recommends the use of alkylate fuel, either Aspen two-stroke fuel or
environmental fuel for four-stroke engines blended with two-stroke oil as set
out below. Note that carburettor adjustment may be necessary when changing the
type of fuel (see the instructions under the heading Carburettor).
Ethanol fuel
HUSQVARNA recommends commercial available fuel with maximum 10% ethanol
content.
Running-in
Avoid running at a too high speed for extended periods during the first 10
hours.
Two-stroke oil
· For best results and performance use HUSQVARNA two-stroke engine oil, which
is specially formulated for our air-cooled two-stroke engines.
· Never use two-stroke oil intended for water-cooled engines, sometimes
referred to as outboard oil (rated TCW).
· Never use oil intended for four-stroke engines.
· A poor oil quality and/or too high oil/fuel ratio may jeopardise function
and decrease the life time of catalytic converters.
Mixing ratio
1:50 (2%) with HUSQVARNA two-stroke oil.
1:33 (3%) with oils class JASO FB or ISO EGB formulated for air-cooled, two-
stroke engines.
Petrol, litre
5 10 15 20
Two-stroke oil, litre
2% (1:50) 0,10
3% (1:33) 0,15
0,20
0,30
0,30
0,45
0,40
0,60
Mixing
· Always mix the petrol and oil in a clean container intended for fuel.
· Always start by filling half the amount of the petrol to be used. Then add
the entire amount of oil. Mix (shake) the fuel mixture. Add the remaining
amount of petrol.
· Mix (shake) the fuel mixture thoroughly before filling the machine’s fuel
tank.
· Do not mix more than one month’s supply of fuel at a time.
· If the machine is not used for some time the fuel tank should be emptied and
cleaned.
Chain oil
· We recommend the use of special oil (chain oil) with good adhesion
characteristics. (48)
· Never use waste oil. This results in damage to the oil pump, the bar and the
chain.
· It is important to use oil of the right grade (suitable viscosity range) to
suit the air temperature.
· In temperatures below 0°C (32°F) some oils become too viscous. This can
overload the oil pump and result in damage to the oil pump components.
· Contact your service agent when choosing chain oil.
18 English
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FUEL HANDLING
Fueling
WARNING! Taking the following
!
precautions, will lessen the risk of fire:
Do not smoke and do not place any hot objects in the vicinity of fuel.
Always stop the engine and let it cool for a few minutes before refuelling.
When refuelling, open the fuel cap slowly so that any excess pressure is
released gently.
Tighten the fuel cap carefully after refuelling.
Always move the machine away from the refuelling area and source before
starting.
Clean the area around the fuel cap. Clean the fuel and chain oil tanks regularly. The fuel filter must be replaced at least once a year. Contamination in the tanks causes malfunction. Make sure the fuel is well mixed by shaking the container before refuelling. The capacities of the chain oil tank and fuel tank are carefully matched. You should therefore always fill the chain oil tank and fuel tank at the same time. (48)
!
WARNING! Fuel and fuel vapour are highly flammable. Take care when
handling fuel and chain oil. Be aware of
the risks of fire, explosion and those
associated with inhalation.
Removing fuel cap and chain oil cap
· Press down on the textured area of the flip lever and lift to an upright
position. (49)
· Loosen the cap by turning it counterclockwise. (50) · Remove the cap. (51)
Replacing fuel cap and chain oil cap
· Insert the cap with the flip lever in an upright position. (52)
· Tighten the cap securely by turning it clockwise. (53) · Fold the flip lever
down. (54)
Fuel safety
· Never refuel the machine while the engine is running.
· Make sure there is plenty of ventilation when refuelling or mixing fuel
(petrol and 2-stroke oil).
· Move the machine at least 3 m from the refuelling point before starting it.
· Never start the machine:
1 If you have spilt fuel or chain oil on the machine. Wipe off the spillage
and allow remaining fuel to evaporate.
2 If you have spilt fuel on yourself or your clothes, change your clothes.
Wash any part of your body that has come in contact with fuel. Use soap and
water.
3 If the machine is leaking fuel. Check regularly for leaks from the fuel cap
and fuel lines.
!
WARNING! Never use a machine with visible damage to the spark plug guard
and ignition cable. A risk of sparking
arises, which can cause a fire.
Transport and storage
· Always store the chain saw and fuel so that there is no risk of leakages or
fumes coming into contact with sparks or naked flames from electrical
equipment, electric motors, relays/switches, boilers and the like.
· Always store fuel in an approved container designed for that purpose.
· For longer periods of storage or for transport of the chain saw, the fuel
and chain oil tanks should be emptied. Ask where you can dispose of waste fuel
and chain oil at your local petrol station.
· The guide bar cover must always be fitted to the cutting attachment when the
machine is being transported or in storage, in order to prevent accident
contact with the sharp chain. Even a non-moving chain can cause serious cuts
to yourself or persons you bump into with an exposed chain.
· Remove the spark plug cap from the spark plug. Activate the chain brake.
· Secure the machine during transport.
Long-term storage
Empty the fuel/oil tanks in a well ventilated area. Store the fuel in approved
cans in a safe place. Fit the guide bar cover. Clean the machine. See
instructions under the heading Maintenance schedule.
Ensure the machine is cleaned and that a complete service is carried out
before long-term storage.
IMPORTANT! Always replace a damaged cap.
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English 19
STARTING AND STOPPING
Starting and stopping
WARNING! Note the following before
!
starting:
The chain brake must be engaged when the chain saw is started to reduce the
chance of contact with the moving chain during starting.
Never start a chain saw unless the bar, chain and all covers are fitted
correctly. Otherwise the clutch can come loose and cause personal injuries.
Place the machine on firm ground. Make sure you have a secure footing and that
the chain cannot touch anything.
Keep people and animals well away from the working area.
Never twist the starter cord around your hand.
Starting
The chain brake must be engaged when the chain saw is started. Activate the
brake by moving the front hand guard forwards. (55)
Cold engine
Start position, 1: Set the start/stop switch in the choke position by pulling
the red control outward – upward. (56)
Air purge (2): Press the air purge diaphragm repeatedly until fuel fills the
diaphragm (at least 6 times). The diaphragm need not be completely filled.
(56)
Grip the front handle with your left hand. Hold the chain saw on the ground by
placing your right foot through the rear handle. (57)
Pull the starter handle, 3: Pull the starter handle with your right hand and
pull out the starter cord slowly until you feel a resistance (as the starter
pawls engage) then pull firmly and rapidly until the engine fires.
Push down the red choke control, 4: As soon as the engine fires which can be
heard through a “puff” sound, push down on the red choke control.
Pull the starter handle (5): Keep on pulling the cord powerfully until the
engine starts.
Warm engine
Start position, 1: The correct choke/start throttle setting for warm starting
is obtained by initially moving the choke control by pulling the red control
outward – upwards. (56)
Air purge (2): Press the air purge diaphragm repeatedly until fuel fills the
diaphragm (at least 6 times). The diaphragm need not be completely filled.
(56)
Push down the red choke control, 3: This inactivates the choke, which is not
needed when starting a warm chain saw. However the movement of the start/stop
switch
20 English
will have engaged a high idle, making warm starting easier.
Pull the starter handle, 4: Grip the front handle with your left hand. Hold
the chain saw on the ground by placing your right foot through the rear
handle. (57)
Pull the starter handle with your right hand and pull out the starter cord
slowly until you feel a resistance (as the starter pawls engage) then pull
firmly and rapidly until the engine starts.
As the chain brake is still engaged the speed of the engine must be set to
idling as soon as possible, this is achieved by disengaging the throttle lock.
Disengagement is done by gently touching on the throttle trigger. This
prevents unnecessary wear to the clutch, clutch drum and brake band. Allow the
machine to idle a few seconds before giving full throttle.
There is a simplified start reminder with illustrations to describe each step
on the rear edge of the saw (A). (57)
CAUTION! Do not pull the starter cord all the way out and do not let go of the
starter handle when the cord is fully extended. This can damage the machine.
Note! Pull the front hand guard towards the front handle.The chain brake is
now disengaged.Your chain saw is now ready for use.
!
WARNING! Long term inhalation of the engine’s exhaust fumes, chain oil mist
and dust from sawdust can represent a
health risk.
· Never start a chain saw unless the bar, chain and all covers are fitted
correctly. See instructions under the heading Assembly. Without a bar and
chain attached to the chain saw the clutch can come loose and cause serious
injury.
· The chain brake should be activated when starting. Se instructions under the
heading Start and stop. Do not drop start. This method is very dangerous
because you may lose control of the saw. (55)
· Never start the machine indoors. Exhaust fumes can be dangerous if inhaled.
· Observe your surroundings and make sure that there is no risk of people or
animals coming into contact with the cutting equipment.
· Always hold the saw with both hands. The right hand should be on the rear
handle, and the left hand on the front handle. All people, whether right or
left handed, should use this grip. Use a firm grip with thumbs and fingers
encircling the chain saw handles.
Stopping
Stop the engine by pushing the start/stop switch down. (59)
CAUTION! The start/stop switch automatically returns to run position. To avoid
involuntary start up, the spark plug cap must always be removed from the spark
plug when the machine is unsupervised. (60)
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WORKING TECHNIQUES
Before use: (61)
1 Check that the chain brake works correctly and is not damaged.
2 Check that the rear right hand guard is not damaged. 3 Check that the
throttle lockout works correctly and is
not damaged. 4 Check that the stop switch works correctly and is not
damaged. 5 Check that all handles are free from oil. 6 Check that the anti
vibration system works and is not
damaged. 7 Check that the muffler is securely attached and not
damaged. 8 Check that all parts of the chain saw are tightened
correctly and that they are not damaged or missing. 9 Check that the chain
catcher is in place and not
damaged. 10 Check the chain tension.
General working instructions
IMPORTANT!
This section describes basic safety rules for using a chain saw. This
information is never a substitute for professional skills and experience. If
you get into a situation where you feel unsafe, stop and seek expert advice.
Contact your chain saw dealer, service agent or an experienced chain saw user.
Do not attempt any task that you feel unsure of!
Before using a chain saw you must understand the effects of kickback and how
to avoid them. See instructions under the heading How to avoid kickback.
Before using a chain saw you must understand the difference between cutting
with the top and bottom edges of the bar. See instructions under the headings
How to avoid kickback and Machine’s safety equipment.
Wear personal protective equipment. See instructions under the “Personal
protective equipment” heading.
Basic safety rules
1 Look around you:
· To ensure that people, animals or other things cannot affect your control of
the machine.
· To make sure that none of the above might come within reach of your saw or
be injured by falling trees.
CAUTION! Follow the instructions above, but do not use a chain saw in a
situation where you cannot call for help in case of an accident.
2 Do not use the machine in bad weather, such as dense fog, heavy rain, strong
wind, intense cold, etc. Working in bad weather is tiring and often brings
added risks, such as icy ground, unpredictable felling direction, etc.
3 Take great care when removing small branches and avoid cutting bushes (i.e.
cutting many small branches at the same time). Small branches can be grabbed
by
1155355-38 Rev.3 2014-11-24
the chain and thrown back at you, causing serious injury.
4 Make sure you can move and stand safely. Check the area around you for
possible obstacles (roots, rocks, branches, ditches, etc.) in case you have to
move suddenly. Take great care when working on sloping ground.
5 Take great care when cutting a tree that is in tension. A tree that is in
tension may spring back to its normal position before or after being cut. If
you position yourself incorrectly or make the cut in the wrong place the tree
may hit you or the machine and cause you to lose control. Both situations can
cause serious personal injury.
6 Before moving your chain saw switch off the engine and lock the chain using
the chain brake. Carry the chain saw with the bar and chain pointing
backwards. Fit a guard to the bar before transporting the chain saw or
carrying it for any distance.
7 When you put the chain saw on the ground, lock the saw chain using the chain
brake and ensure you have a constant view of the machine. Switch the engine
off before leaving your chain saw for any length of time.
!
WARNING! Sometimes chips get stuck in the clutch cover causing the chain to
jam. Always stop the engine before
cleaning.
General rules
1 If you understand what kickback is and how it happens then you can reduce or
eliminate the element of surprise. By being prepared you reduce the risk.
Kickback is usually quite mild, but it can sometimes be very sudden and
violent.
2 Always hold the chain saw firmly with your right hand on the rear handle and
your left hand on the front handle. Wrap your fingers and thumbs around the
handles. You should use this grip whether you are right-handed or left-handed.
This grip minimises the effect of kickback and lets you keep the chain saw
under control. Do not let go of the handles!
3 Most kickback accidents happen during limbing. Make sure you are standing
firmly and that there is nothing in the way that might make you trip or lose
your balance.
Lack of concentration can lead to kickback if the kickback zone of the bar
accidentally touches a branch, nearby tree or some other object.
Have control over the workpiece. If the pieces you intend to cut are small and
light, they can jam in the saw chain and be thrown towards you. Even if this
does not need to be a danger, you may be surprised and lose control of the
saw. Never saw stacked logs or branches without first separating them. Only
saw one
English 21
WORKING TECHNIQUES
log or one piece at a time. Remove the cut pieces to keep your working area
safe. (62)
4 Never use the chain saw above shoulder height and try not to cut with the
tip of the bar. Never use the chain saw one-handed! (63)
5 You must have a steady stance in order to have full control over the chain
saw. Never work standing on a ladder, in a tree or where you do not have firm
ground to stand on. (64)
6 Always use a fast cutting speed, i.e. full throttle.
7 Take great care when you cut with the top edge of the bar, i.e. when cutting
from the underside of the object. This is known as cutting on the push stroke.
The chain tries to push the chain saw back towards the user. If the saw chain
is jamming, the saw may be pushed back at you. (65)
8 Unless the user resists this pushing force there is a risk that the chain
saw will move so far backwards that only the kickback zone of the bar is in
contact with the tree, which will lead to a kickback. (66)
Cutting with the bottom edge of the bar, i.e. from the top of the object
downwards, is known as cutting on the pull stroke. In this case the chain saw
pulls itself towards the tree and the front edge of the chain saw body rests
naturally on the trunk when cutting. Cutting on the pull stroke gives the
operator better control over the chain saw and the position of the kickback
zone. (67)
9 Follow the instructions on sharpening and maintaining your bar and chain.
When you replace the bar and chain use only combinations that are recommended
by us. See instructions under the headings Cutting equipment and Technical
data.
Basic cutting technique
There are five important factors you should consider before making a cut:
1 Make sure the cutting equipment will not jam in the cut. (68)
2 Make sure the object you are cutting will not split. (69)
3 Make sure the chain will not strike the ground or any other object during or
after cutting. (70)
4 Is there a risk of kickback? (4)
5 Do the conditions and surrounding terrain affect how safely you can stand
and move about?
Two factors decide whether the chain will jam or the object that you are
cutting will split: the first is how the object is supported before and after
cutting, and the second is whether it is in tension.
In most cases you can avoid these problems by cutting in two stages; from the
top and from the bottom. You need to support the object so that it will not
trap the chain or split during cutting.
IMPORTANT! If the chain jams in the cut: stop the engine! Don’t try to pull
the chain saw free. If you do you may be injured by the chain when the chain
saw suddenly breaks free. Use a lever to open up the cut and free the chain
saw.
The following instructions describe how to handle the commonest situations you
are likely to encounter when using a chain saw.
Limbing
When limbing thick branches you should use the same approach as for cutting.
Cut difficult branches piece by piece. (71)
Cutting
!
WARNING! Never use a chain saw by holding it with one hand. A chain saw is
not safely controlled with one hand.
Always have a secure, firm grip around
the handles with both hands.
General · Always use full throttle when cutting! · Reduce the speed to idle
after every cut (running the
engine for too long at full throttle without any load, i.e. without any
resistance from the chain during cutting, can lead to serious engine damage).
· Cutting from above = Cutting on the pull stroke. · Cutting from below =
Cutting on the push stroke. Cutting on the push stroke increases the risk of
kickback. See instructions under the heading How to avoid kickback.
Terms Cutting = General term for cutting through wood. Limbing = Cutting
branches off a felled tree. Splitting = When the object you are cutting breaks
off before the cut is complete.
22 English
WARNING! Never attempt to cut logs
!
while they are in a pile or when a couple
of logs are lying together. Such
procedures drastically increase the risk
of kickback which can result in a serious
or fatal injury.
If you have a pile of logs, each log you attempt to cut should be removed from
the pile, placed on a saw horse or runners and cut individually.
Remove the cut pieces from the cutting area. By leaving them in the cutting
area, you increase the risk for inadvertently getting a kickback, as well as
increasing the risk of losing your balance while working. (72)
The log is lying on the ground. There is little risk of the chain jamming or
the object splitting. However there is a risk that the chain will touch the
ground when you finish the cut. (73)
Cut all the way through the log from above. Avoid letting the chain touch the
ground as you finish the cut. Maintain full throttle but be prepared for what
might happen. (74)
If it is possible (can you turn the log?) stop cutting about 2/3 of the way
through the log.
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WORKING TECHNIQUES
Turn the log and finish the cut from the opposite side. (75)
The log is supported at one end. There is a high risk that it will split. (76)
Start by cutting from below (about 1/3 of the way through).
Finish by cutting from above so that the two cuts meet. (77)
The log is supported at both ends. There is a high risk that the chain will
jam. (78)
Start by cutting from above (about 1/3 of the way through).
Finish by cutting from below so that the two cuts meet. (79)
Tree felling technique
IMPORTANT! It takes a lot of experience to fell a tree. Inexperienced users of
chain saws should not fell trees. Do not attempt any task that you feel unsure
of!
Safe distance
The safe distance between a tree that is to be felled and anyone else working
nearby is at least 2 1/2 tree lengths. Make sure that no-one else is in this
“risk zone” before or during felling. (80)
Felling direction
The aim is to fell the tree in a position where you can limb and cross-cut the
log as easily as possible. You want it to fall in a location where you can
stand and move about safely.
Once you have decided which way you want the tree to fall you must judge which
way the tree would fall naturally.
Several factors affect this:
· Lean of the tree
· Bend
· Wind direction
· Arrangement of branches
· Weight of snow
· Obstacles within the reach of the tree: for example, other trees, power
lines, roads and buildings.
· Look for signs of damage and rot in the stem, this makes it more probably
that the tree will break and start to fall before you expect it to.
You may find you are forced to let the tree fall in its natural direction
because it is impossible or dangerous to try to make it fall in the direction
you first intended.
Another very important factor, which does not affect the felling direction but
does affect your safety, is to make sure the tree has no damaged or dead
branches that might break off and hit you during felling.
The main point to avoid is letting the tree fall onto another tree. It is very
dangerous to remove a trapped tree and
there is high accident risk. See instructions under the heading Freeing a tree
that has fallen badly. (81)
IMPORTANT! During critical felling operations, hearing protectors should be
lifted immediately when sawing is completed so that sounds and warning signals
can be heard.
Clearing the trunk and preparing your retreat
Delimb the stem up to shoulder height. It is safer to work from the top down
and to have the tree between you and the saw. (82)
Remove any undergrowth from the base of the tree and check the area for
obstacles (stones, branches, holes, etc.) so that you have a clear path of
retreat when the tree starts to fall. Your path of retreat should be roughly
135 degrees away from the intended felling direction. (83)
1 Danger zone
2 Retreat path
3 Felling direction
Felling
WARNING! Unless you have special
!
training we advise you not to fell trees
with a diameter larger than the bar length
of your saw!
Felling is done using three cuts. First you make the directional cuts, which
consist of the top cut and the bottom cut, then you finish with the felling
cut. By placing these cuts correctly you can control the felling direction
very accurately.
Directional cuts
To make the directional cut you begin with the top cut. Aim using to the saw’s
felling direction mark (1) toward a goal further forward in the terrain, where
you would like the tree to fall (2). Stand on the right-hand side of the tree,
behind the saw, and cut with a pull stroke.
Next make the bottom cut so that it finishes exactly at the end of the top
cut. (84)
The directional cuts should run 1/4 of the diameter through the trunk and the
angle between the top cut and bottom cut should be 45°.
The line where the two cuts meet is called the directional cut line. This line
should be perfectly horizontal and at right angles (90°) to the chosen felling
direction. (85)
Felling cut
The felling cut is made from the opposite side of the tree and it must be
perfectly horizontal. Stand on the left side of the tree and cut on the pull
stroke.
Make the felling cut about 3-5 cm (1.5-2 inches) above the bottom directional
cut. (86)
Set the spike bumper (if one is fitted) just behind the felling hinge. Use
full throttle and advance the chain/bar slowly into the tree. Make sure the
tree does not start to move in
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WORKING TECHNIQUES
the opposite direction to your intended felling direction. Drive a wedge or
breaking bar into the cut as soon as it is deep enough.
Finish the felling cut parallel with the directional cut line so that the
distance between them is at least 1/10 of the trunk diameter. The uncut
section of the trunk is called the felling hinge.
The felling hinge controls the direction that the tree falls in. (87)
All control over the felling direction is lost if the felling hinge is too
narrow or non-existent, or if the directional cuts and felling cut are badly
placed. (88)
When the felling cut and directional cut are complete the tree should start to
fall by itself or with the aid of a felling wedge or breaking bar. (89)
We recommend that you use a bar that is longer than the diameter of the tree,
so that you can make the felling cut and directional cuts with single cutting
strokes. See instructions under the heading Technical data section to find out
which lengths of bar are recommended for your saw.
There are methods for felling trees with a diameter larger than the bar
length. However these methods involve a much greater risk that the kickback
zone of the bar will come into contact with the tree. (4)
Freeing a tree that has fallen badly
Freeing a “trapped tree”
It is very dangerous to remove a trapped tree and there is high accident risk.
Never try to fell the tree that is trapped.
Never work in the risk zone of the hanging trapped tree. (90)
The safest method is to use a winch.
· Tractor-mounted
· Portable
Cutting trees and branches that are in tension
Preparations: Work out which side is in tension and where the point of maximum
tension is (i.e. where it would break if it was bent even more). (91)
Decide which is the safest way to release the tension and whether you are able
to do it safely. In complicated situations the only safe method is to put
aside your chain saw and use a winch.
General advice:
Position yourself so that you will be clear of the tree or branch when the
tension is released. (92)
Make one or more cuts at or near the point of maximum tension. Make as many
cuts of sufficient depth as necessary to reduce the tension and make the tree
or branch break at the point of maximum tension. (93)
Never cut straight through a tree or branch that is in tension!
If you must cut across tree/limb, make two to three cuts, one inch apart, one
to two inches deep. (94)
Continue to cut deeper until tree/limb bends and tension is released. (95)
Cut tree/limb from outside the bend, after tension has been released.
How to avoid kickback
!
WARNING! Kickback can happen very suddenly and violently; kicking the chain
saw, bar and chain back at the user. If
this happens when the chain is moving it
can cause very serious, even fatal
injuries. It is vital you understand what
causes kickback and that you can avoid
it by taking care and using the right
working technique.
What is kickback?
The word kickback is used to describe the sudden reaction that causes the
chain saw and bar to jump off an object when the upper quadrant of the tip of
the bar, known as the kickback zone, touches an object. (66)
Kickback always occurs in the cutting plane of the bar. Normally the chain saw
and bar are thrown backwards and upwards towards the user. However, the chain
saw may move in a different direction depending on the way it was being used
when the kickback zone of the bar touched the object. (7)
Kickback only occurs if the kickback zone of the bar touches an object. (4)
Limbing
!
WARNING! A majority of kickback accidents occur during limbing. Do not
use the kickback zone of the guide bar.
Be extremely cautious and avoid
contacting the log, other limbs or objects
with the nose of the guide bar. Be
extremely cautious of limbs under
tension. They can spring back toward
you and cause loss of control resulting
in injury.
Make sure that you can stand and move about safely. Work on the left side of
the trunk. Work as close as possible to the chain saw for maximum control. If
possible, let the weight of the chain saw rest on the trunk.
Keep the trunk between you and the chain saw as you move along the trunk.
Cutting the trunk into logs
See instructions under the heading Basic cutting technique.
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MAINTENANCE
General
The user must only carry out the maintenance and service work described in
this Operator’s Manual. More extensive work must be carried out by an
authorized service workshop.
Carburettor adjustment
Your Husqvarna product has been designed and manufactured to specifications
that reduce harmful emissions.
Function
· The carburettor governs the engine’s speed via the throttle control. Air and
fuel are mixed in the carburettor. The air/fuel mixture is adjustable. Correct
adjustment is essential to get the best performance from the machine.
· The T-screw regulates the throttle setting at idle speed. If the T-screw is
turned clockwise this gives a higher idle speed; turning it anti-clockwise
gives a lower idle speed.
Basic settings and running in
The basic carburettor settings are adjusted during testing at the factory.
Fine adjustment should be carried out by a skilled technician.
Rec. idle speed: See the Technical data section.
Fine adjustment of the idle speed T
Adjust the idle speed with the T-screw. If it is necessary to re-adjust, turn
the T-screw clockwise while the engine is running, until the chain starts to
rotate. Then turn anticlockwise until the chain stops. When the idle speed is
correctly adjusted the engine should run smoothly in every position and the
engine speed should be safely below the speed at which the chain starts to
rotate.
Checking, maintaining and servicing chain saw safety equipment
Note! All service and repair work on the machine demands special training.
This is especially true of the machine’s safety equipment. If your machine
fails any of the checks described below we recommend that you take it to your
service workshop.
Chain brake and front hand guard
Checking brake band wear
Brush off any wood dust, resin and dirt from the chain brake and clutch drum.
Dirt and wear can impair operation of the brake. (96) Regularly check that the
brake band is at least 0,6 mm thick at its thinnest point. Checking the front
hand guard
Make sure the front hand guard is not damaged and that there are no visible
defects such as cracks. Move the front hand guard forwards and back to make
sure it moves freely and that it is securely anchored to the clutch cover.
Checking the inertia brake release
!
WARNING! Contact your servicing dealer, if the idle speed setting cannot be
adjusted so that the chain stops. Do not
use the chain saw until it has been
properly adjusted or repaired.
Correctly adjusted carburettor
When the carburettor is correctly adjusted the machine accelerates without
hesitation and 4-cycles a little at full throttle. It is also important that
the chain does not rotate at idle. If the L-jet is set too lean it may cause
starting difficulties and poor acceleration. If the H-jet is set too lean the
machine will have less power, poor acceleration and could suffer damage to the
engine.
Place the chain saw, with the engine switched off, on a stump or other stable
surface. Release the front handle and let the saw fall by its own weight,
rotating around the rear handle towards the stump. (97)
When the bar hits the stump the brake should be activated. (98)
Checking the brake trigger
Place the chain saw on firm ground and start it. Make sure the chain does not
touch the ground or any other object. See the instructions under the heading
Start and stop. (99)
Grasp the chain saw firmly, wrapping your fingers and thumbs around the
handles.
Apply full throttle and activate the chain brake by tilting your left wrist
forward onto the front hand guard. Do not let go of the front handle. The
chain should stop immediately. (58)
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Throttle lockout
MAINTENANCE Muffler
· Make sure the throttle control is locked at the idle setting when the
throttle lockout is released. (100)
· Press the throttle lockout and make sure it returns to its original position
when you release it. (101)
· Check that the throttle trigger and throttle lockout move freely and that
the return springs work properly. (102)
· Start the chain saw and apply full throttle. Release the throttle control
and check that the chain stops and remains stationary. If the chain rotates
when the throttle control is in the idle position you should check the
carburettor idle adjustment.
Chain catcher
Check that the chain catcher is not damaged and is firmly attached to the body
of the chain saw. (103)
Right hand guard
Check that the right hand guard is not damaged and that there are no visible
defects, such as cracks. (11)
Vibration damping system
Regularly check the vibration damping units for cracks or deformation. Make
sure the vibration damping units are securely attached to the engine unit and
handle unit. (104)
Stop switch
Start the engine and make sure the engine stops when you move the stop switch
to the stop setting. (59) CAUTION! The start/stop switch automatically returns
to run position. In order to prevent unintentional starting, the spark plug
cap must be removed from the spark plug when assembling, checking and/or
performing maintenance.
Never use a machine that has a faulty muffler.
Regularly check that the muffler is securely attached to the machine. (105)
Some mufflers are equipped with a special spark arrestor mesh. If your machine
has this type of muffler, you should clean the mesh at least once a week. This
is best done with a wire brush. A blocked mesh will cause the engine to
overheat and may lead to serious damage.
Note! The mesh must be replaced if it is damaged. If the mesh is blocked the
machine will overheat and this will cause damage to the cylinder and piston.
Never use a machine with a muffler that is in poor condition. Never use a
muffler if the spark arrestor mesh is missing or defective. (13)
The muffler is designed to reduce the noise level and to direct the exhaust
gases away from the operator. The exhaust gases are hot and can contain
sparks, which may cause fire if directed against dry and combustible material.
Starter
!
WARNING! When the recoil spring is wound up in the starter housing it is
under tension and can, if handled
carelessly, pop out and cause personal
injury.
Care must be exercised when replacing the return spring or the starter cord. Wear protective glasses and protective gloves.
Replacing the starter cord
· Loosen the screws that hold the starter against the crankcase and remove the
starter. (106)
· Pull out the cord approx. 30 cm and hook it into the notch in the rim of the
pulley. Release the recoil spring by letting the pulley rotate slowly
backwards. (107)
· Undo the bolt in the centre of the pulley and remove the drive disc (A),
drive disc spring (B) and the pulley (C). Insert and secure a new starter cord
in the starter pulley. Wind approx. 3 turns of the starter cord on the starter
pulley. Fit the starter pulley so that the end of the recoil spring (D) hooks
into the starter pulley. Now assemble the drive disc spring, drive disc and
the bolt in the centre of the pulley. Carry the starter cord through the hole
in the starter housing and the starter handle. Tie a good knot on the starter
cord. (108)
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MAINTENANCE
Tensioning the recoil spring
· Hook the starter cord in the notch in the pulley and turn the starter pulley
about 2 turns clockwise. Note! Check that the pulley can be turned at least a
further 1/2 turn when the starter cord is pulled all the way out. (109)
Stretch the line with the handle. Move your thumb and release the line. See
the figure below. (110)
Replacing the return and drive springs
Recoil spring (A) · Lift up the starter pulley. See instructions under the
heading Changing a broken or worn starter cord. Remember that the recoil
spring is coiled under tension in the starter housing. · Remove the cassette
with the recoil spring from the starter. · Lubricate the recoil spring with
light oil. Fit the cassette with recoil spring in the starter. Fit the starter
pulley and tension the recoil spring. Drive disc spring (B) · Undo the bolt in
the centre of the pulley and remove the drive disc and the drive disc spring.
· Replace the drive disc spring and fit the drive disc above the spring. (111)
Fitting the starter
· To fit the starter, first pull out the starter cord and place the starter in
position against the crankcase. Then slowly release the starter cord so that
the pulley engages with the pawls.
· Fit and tighten the screws that hold the starter.
Air filter
The air filter must be regularly cleaned to remove dust and dirt in order to
avoid: · Carburettor malfunctions · Starting problems · Loss of engine power ·
Unnecessary wear to engine parts. · Excessive fuel consumption. · Remove the
air filter after taking off the air filter cover.
When refitting make sure that the air filter seals tightly against the filter
holder. Clean the filter by brushing or shaking it. (112) The filter can be
cleaned more thoroughly by washing it in water and detergent. An air filter
that has been in use for a long time cannot be cleaned completely. The filter
must therefore be replaced 1155355-38 Rev.3 2014-11-24
with a new one at regular intervals. A damaged air filter must always be
replaced. A HUSQVARNA chain saw can be equipped with different types of air
filter according to working conditions, weather, season, etc. Contact your
dealer for advice.
Spark plug
The spark plug condition is influenced by: · Incorrect carburettor adjustment.
· An incorrect fuel mixture (too much or incorrect type of
oil). · A dirty air filter. These factors cause deposits on the spark plug
electrodes, which may result in operating problems and starting difficulties.
If the machine is low on power, difficult to start or runs poorly at idle
speed: always check the spark plug first before taking any further action. If
the spark plug is dirty, clean it and check that the electrode gap is 0,5 mm.
The spark plug should be replaced after about a month in operation or earlier
if necessary. (113) Note! Always use the recommended spark plug type! Use of
the wrong spark plug can damage the piston/cylinder. Check that the spark plug
is fitted with a suppressor.
Needle bearing lubrication
The clutch drum has a needle bearing on the output shaft. This needle bearing
must be lubricated regularly. When lubricating, remove the clutch cover by
loosening the two bar nuts. Lay the saw on its side with the clutch drum
upwards. Lubrication involves engine oil dripping into the centre of the
clutch drum as it rotates. (114)
Cooling system
To keep the working temperature as low as possible the machine is equipped
with a cooling system. The cooling system consists of: 1 Air intake on the
starter. 2 Air guide plate. 3 Fins on the flywheel. 4 Cooling fins on the
cylinder. 5 Cylinder cover (directs cold air over the cylinder).
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MAINTENANCE
Clean the cooling system with a brush once a week, more often in demanding
conditions. A dirty or blocked cooling system results in the machine
overheating which causes damage to the piston and cylinder.
“Air Injection” centrifugal cleaning
Centrifugal cleaning means the following: All air to the carburettor passes
through the starter. Dirt and dust is centrifuged out by the cooling fan.
(116) IMPORTANT! In order to maintain operation of the centrifugal cleaning
system it must be regularly maintained. Clean the air intake to the starter,
the fins on the flywheel, the space around the flywheel, inlet pipe and
carburettor compartment.
Winter use
Running problems can occur when using the machine in the cold and snowy
conditions caused by: · Too low engine temperature. · Icing of the air filter
and carburettor. Special measures are therefore often required: · Partly mask
the air inlet on the starter to increase the
working temperature of the engine.
Temperature -5°C or colder:
For running the machine in cold weather or powder snow, a special cover is
available, which is mounted on the starter housing. This reduces the intake of
cold air and prevents large amounts of snow from being sucked in. (117)
CAUTION! If the special winterising kit has been fitted or any measures have
been taken to increase the temperature these changes must be reversed before
the machine is used in normal temperature conditions. Otherwise there is a
risk of overheating, resulting in severe damage to the engine. IMPORTANT! Any
maintenance other than that described in this manual must be carried out by
your servicing dealer (retailer).
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MAINTENANCE
Maintenance schedule
The following is a list of the maintenance steps that must be performed on the
machine. Most of the items are described in the Maintenance section.
Daily maintenance
Weekly maintenance
Clean the outside of the machine.
Check the cooling system weekly.
Check that the components of the throttle control work safely. (Throttle
lockout and throttle control.)
Clean the chain brake and check that it operates safely. Make sure that the
chain catcher is undamaged, and replace it if necessary.
The bar should be turned regularly for more even wear. Check the lubrication
hole in the bar, to be sure it is not clogged. Clean the bar groove.
Check that the bar and chain are getting sufficient oil.
Check the saw chain with regard to visible cracks in the rivets and links,
whether the saw chain is stiff or whether the rivets and links are abnormally
worn. Replace if necessary.
Sharpen the chain and check its tension and condition. Check the drive
sprocket for excessive wear and replace if necessary.
Clean the starter units air intake.
Check that nuts and screws are tight.
Check that the stop switch works correctly.
Check that there are no fuel leaks from the engine, tank or fuel lines.
Check that the chain does not rotate when the engine is idling.
Check the starter, starter cord and return spring.
Check that the vibration damping elements are not damaged.
Lubricate the clutch drum bearing.
File off any burrs from the edges of the bar.
Clean or replace the spark arrestor mesh on the muffler.
Clean the carburettor compartment.
Clean the air filter. Replace if necessary.
Monthly maintenance Check the brake band on the chain brake for wear. Replace
when less than 0.6 mm (0,024 inch) remains at the most worn point. Check the
clutch centre, clutch drum and clutch spring for wear.
Clean the spark plug. Check that the electrode gap is 0.5 mm.
Clean the outside of the carburettor.
Check the fuel filter and the fuel hose. Replace if necessary.
Empty the fuel tank and clean the inside.
Empty the oil tank and clean the inside.
Check all cables and connections.
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TECHNICAL DATA
Technical data
435 II
435e II
440 II
440e II
Engine
Cylinder displacement, cm3
40,9
40,9
40,9
40,9
Cylinder bore, mm Stroke, mm Idle speed, rpm
41 31 2900
41 31 2900
41 31 2900
41 31 2900
Power, kW/ rpm
1,6/9000
1,6/9000
1,8/9000
1,8/9000
Ignition system Spark plug Electrode gap, mm
NGK BPMR 7A/ NGK BPMR 7A/ NGK BPMR 7A/ NGK BPMR 7A/ Champion RCJ 7Y Champion RCJ 7Y Champion RCJ 7Y Champion RCJ 7Y
0,5
0,5
0,5
0,5
Fuel and lubrication system
Fuel tank capacity, litre
0,37
0,37
0,37
0,37
Oil pump capacity at 9,000 rpm, ml/min 13
13
13
13
Oil tank capacity, litre
0,25
0,25
0,25
0,25
Type of oil pump
Automatic
Automatic
Automatic
Automatic
Weight
Chain saw without bar or chain, empty tanks, kg
4,2
4,4
4,2
4,4
Noise emissions (see note 1)
Sound power level, measured dB (A) 112
112
113
113
Sound power level, guaranteed LWA dB (A)
114
114
114
114
Sound levels (see note 2)
Equivalent sound pressure level at the operator’s ear, dB(A)
102
102
102
102
Equivalent vibration levels, a hveq (see note 3)
Front handle, m/s2
2,5
2,5
2,5
2,5
Rear handle, m/s2
3,2
3,2
3,2
3,2
Chain/bar Standard bar length, inch/cm Recommended bar lengths, inch/cm Usable cutting length, inch/cm
13″/33 13-18/33-45 12-17/31-43
13″/33 13-18/33-45 12-17/31-43
13/33 13-18/33-45 12-17/31-43
13″/33 13-18/33-45 12-17/31-43
Pitch, inch/mm
0,325/8,25
Thickness of drive links, inch/mm
0,050/1,3
Type of drive sprocket/number of teeth Spur/7
0,325/8,25 0,050/1,3 Spur/7
0,325/8,25 0,050/1,3 Spur/7
0,325/8,25 0,050/1,3 Spur/7
Chain speed at 133% of maximum engine power speed, m/s.
23,1
23,1
23,1
23,1
Note 1: Noise emissions in the environment measured as sound power (LWA) in
conformity with EC directive 2000/14/EC.
Note 2: Equivalent sound pressure level, according to ISO 22868, is calculated
as the time-weighted energy total for different sound pressure levels under
various working conditions. Typical statistical dispersion for equivalent
sound pressure level is a standard deviation of 1 dB (A).
Note 3: Equivalent vibration level, according to ISO 22867, is calculated as
the time-weighted energy total for vibration levels under various working
conditions. Reported data for equivalent vibration level has a typical
statistical dispersion (standard deviation) of 1 m/s2.
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TECHNICAL DATA
Guide bar and saw chain combinations
The following cutting attachments are approved for the models Husqvarna 435
II, 435e II, 440 II and 440e II.
Guide bar
Length, inch Pitch, inch Gauge, mm
13
15
0,325
1,3
16
18
Max. nose radius 10T
Saw chain
Type
Length, drive links (no.)
56
64 Husqvarna H30
66
72
Saw chain filing and file gauges
EC Declaration of Conformity
(Applies to Europe only)
Husqvarna AB, SE-561 82 Huskvarna, Sweden, tel: +46-36-146500, declares under
sole responsibility that the chain saws for forest service Husqvarna 435 II,
435e II, 440 II and 440e II from 2013’s serial numbers and onwards (the year
is clearly stated in plain text on the type plate with subsequent serial
number), are in conformity with the requirements of the COUNCIL’S DIRECTIVES:
– of May 17, 2006 “relating to machinery” 2006/42/EC.
– of December 15, 2004 “relating to electromagnetic compatibility”
2004/108/EC.
– of May 8, 2000 “relating to the noise emissions in the environment”
2000/14/EC.
For information relating to noise emissions, see the Technical data chapter.
The following standards have been applied: EN ISO 12100:2010, ISO 14982:2009,
EN ISO 11681-1:2011
Notified body: 0404, SMP Svensk Maskinprovning AB, Box 7035, SE-750 07
Uppsala, Sweden, has carried out EC type examination in accordance with the
machinery directive’s (2006/42/EC) article 12, point 3b. The certificates for
EC type examination in accordance with annex IX, have the numbers:
0404/09/2012 – 435 II, 435e II, 440 II, 440e II.
In addition, SMP, Svensk Maskinprovning AB, Box 7035, SE-750 07 Uppsala,
Sweden, has certified conformity with annex V of the Council’s Directive of
May 8, 2000 “relating to the noise emissions in the environment” 2000/14/EC.
The certificates have the numbers: 01/161/075 – 435 II, 435e II, 01/161/074 –
440 II, 440e II.
The supplied chain saw conforms to the example that underwent EC type
examination.
Huskvarna 8 April 2013
Bengt Frögelius, Development director chainsaw R&D (Authorized representative for Husqvarna AB and responsible for technical documentation.)
1155355-38 Rev.3 2014-11-24
English 31
References
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