Husqvarna LT28CSHV Hedge Trimmers and Pole Hedge Trimmers Instruction Manual

128LX
Operator’s manual

LT28CSHV Hedge Trimmers and Pole Hedge Trimmers

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Introduction

Product description
The product is a grass trimmer with a combustion engine.
Work is constantly in progress to increase your safety and efficiency during operation. Speak to your servicing dealer for more information.
Intended use
Use the product with a grass blade or a trimmer head to cut grass. Do not use the product for other tasks than grass trimming and grass clearing.
Product overview
(Fig. 1)

1. Grass blade
2. Grease filler cap
3. Bevel gear
4. Cutting attachment guard
5. Shaft
6. J-handle
7. Harness clamp
8. Stop switch
9. Throttle trigger
10. Throttle trigger lockout
11. Spark plug cap and spark plug
12. Cylinder cover
13. Starter rope handle
14. Air purge bulb
15. Fuel tank
16. Air filter cover
17. Choke control
18. Locknut
19. Support flange
20. Support cup
21. Drive disc
22. Trimmer head
23. Combination wrench
24. Transport guard
25. Hex key
26. Locking pin
27. Harness
28. Operator’s manual

Note: National or local regulations can set limit to the operation of the product.
Only use the product with accessories that are approved by the manufacturer. Refer to Accessories on page 23.
Symbols on the product

(Fig. 2)| WARNING! Be careful and use the product correctly. This product can cause serious injury or death to the operator or others.
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(Fig. 3)| Read the operator’s manual carefully and make sure that you understand the
instructions before use.
(Fig. 4)| Use approved hearing protection. Use approved eye protection.
(Fig. 5)| Use approved protective gloves during operation and maintenance. Use
protective boots or shoes with non-slip soles. Use clothing of strong fabric and
of full length.
(Fig. 6)| Make sure that long hair is put above your shoulders.
(Fig. 7)| The product can cause objects to eject, which can cause injury.
(Fig. 8)| Maximum speed of the output shaft.
(Fig. 9)| Keep a minimum distance of 15 m / 50 ft. to persons and animals during
operation of the product.
(Fig. 10)| Risk of blade thrust if the cutting equipment touches an object that it does not immediately cut. The product can cut off body parts. Keep a minimum of 15 m / 50 ft. distance to persons and animals during operation of the product.
(Fig. 11)| The arrows shows the limit for the handle position.
(Fig. 12)| Air purge bulb.
(Fig. 13)| Choke.

yyyywwxxxx
The rating plate shows the serial number. yyyy is the production year and ww is the production week.
Note: Other symbols/decals on the product refer to certification requirements for other commercial areas.
EPA III
(Fig. 14)
The Emissions Compliance Period referred to on the Emission Compliance label indicates the number of operating hours for which the engine has been shown to meet Federal emissions requirements.

EMISSION CONTROL LABEL ABBREVIATIONS

General| Exhaust emission control systems| Evaporative emission control sys- tems
ECS| Emission control sys- tem| ECM| Engine control module (Autotune)| C| Coextruded (Multilayer)
EXH/EVP| Exhaust and Evapora- tive| EM| Engine modification| N| Nylon
HRS| Hours| OC| Oxidizing Catalyst| P| Treated HDPE or PE
REGS| Regulations| TWC| Three way catalyst| S| Sealed
SORE| Small off road engines|
US EPA| United States Environ- mental Protection Agency
EVAP| Evaporative
DISPL| Displacement

Product damage
We are not responsible for damages to our productif:

• the product is incorrectly repaired.
• the product is repaired with parts that are not from the manufacturer or not approved by the manufacturer.
• the product has an accessory that is not from the manufacturer or not approved by the manufacturer.
• the product is not repaired at an approved service center or by an approved authority.

Safety

Safety definitions
Warnings, cautions and notes are used to point outspecially important parts of the manual.
WARNING: Used if there is a risk of injury or death for the operator or bystanders if the instructions in the manual are not obeyed.
CAUTION: Used if there is a risk of damage to the product, other materials or the adjacent area if the instructions in the manual are not obeyed.
Note: Used to give more information that is necessary in a given situation.
General safety instructions
WARNING: Read the warning instructions that follow before you use the product.

• A clearing saw, brushcutter or trimmer can be dangerous if used carelessly or incorrectly and can cause serious injury or death to the operator or others. It is extremely important that you read and understand the contents of this operator’s manual.
• Under no circumstances may the design of theproduct be modified without the permission of the manufacturer. Never use a product that has been modified in any way from its original specification and always use original accessories. Nonauthorized modifications and/or accessories can result in serious personal injury or the death ofthe operator or others.
• The inside of the muffler contain chemicals that may be carcinogenic. Avoid contact with these elements in the event of a damaged muffler.
• This product 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 product.

Safety instructions for assembly
WARNING: Read the warning instructions that follow before you use the product.

• Use approved protective gloves when you assemble the product and cutting attachment.
• Remove the spark plug cap from the spark plug before you assemble the product.
• Make sure that the correct handlebar and cutting attachment guard are assembled before you operate the product.
• A damaged or incorrect cutting attachment guard can cause injury. Do not use a cutting attachment without an approved cutting attachment guard.
• Attach the clutch cover and shaft correctly before you start the product.
• The drive disc and support flange must engage correctly in the center hole of the cutting attachment. A cutting attachment that is attached incorrectly can cause injury or death.
• Attach the harness to the product to prevent injury to the operator or others.

Safety instructions for operation
WARNING: Read the warning instructions that follow before you use the product.

• Never use a harness with a damaged quick release. When using a brush cutter it must always be hooked securely to the harness.
  Otherwise you will be unable to control the brush cutter safely and this can result in injury to yourself or others.

• Always hold the product with both hands. Hold the product on the right side of your body.
  Keep the cutting attachment below waist level.
  Connect the product to the suspension ring on the harness. Keep all parts of your body away from the hot surfaces. Keep all parts of your body away from the rotating cutting attachment.

• Learn and understand the difference between forestry clearing, grass clearing and grass trimming before you use the product.

• Never use a product that has been modified in any way from its original specification.

• Never use a product 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.
  Refer to Maintenance schedule on page 19.

• Use personal protective equipment. Refer to Personal protective equipment on page 13.

• Do not use the product 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.

• The only accessories you can operate with this engine unit are the cutting attachments we recommend. Refer to Accessories on page 23.

• Watch out for thrown objects. Always wear approved eye protection. Never lean over the cutting attachment guard. Stones, rubbish, etc. can be thrown up into the eyes causing blindness or serious injury.

• Never use the product if you are tired, if you are ill, if you have consumed alcohol, or if you are taking other drugs or medication that can affect your vision, judgement or coordination.

• Long-term exposure to noise can result in permanent hearing loss. Always use approved hearing protection.

• Listen for warning signals and loud voices when you use hearing protection. Always remove your hearing protection when the engine stops.

• Carry out an overall inspection of the product before use. Refer to Before you operate the product on page 17.

• Never use the product if it is changed or damaged.

• Make sure that the spark plug cap and ignition lead are not damaged to prevent the risk of electrical shock.

• Look around the work area to make sure that no persons, animals or objects have a negative effect on the safety of the operation of the product.

• Look around the work area to make sure that no persons or animals touch the cutting attachment or are hit by objects that are ejected from the cutting attachment.

• Examine the work area. Remove all loose objects, such as stones, broken glass, nails, steel wire and string, that can eject or wind around the cutting attachment.

• Do not use the product in a situation or location where you can not get aid if an accident occurs.

• Do not use the product without a guard.

• Make sure that persons or animals keep a distance of a minimum of 15 m/50 ft during work.
  Always look behind you before you turn around with the product. Stop the product immediately if a person or animal enters the 15 m/50 ft safety zone. If more than one operator does work in the same area, keep a minimum safety distance of 15 m/50 ft.

• Make sure that you can move safely and have a safe stance. Examine the area around you for obstacles such as roots, rocks, branch and ditches. Be careful during work on slopes.

• Do not overreach. Keep a stable position of the feet and a good balance at all times.

• Before you start the product, put it on a flat surface, at a minimum of 3 m from the fuel source and from where you fill fuel. Make sure that there are no objects near or touching the cutting attachment.

• If the cutting attachment rotates at idle speed, let a service agent adjust it. Do not use the product until it is adjusted or repaired.

• Look out for thrown objects. Always use approved eye protection and keep away from the cutting attachment guard. Stones and other small objects can eject into your eyes and cause blindness or other injuries.

• Do not put the product down with the engine on unless you have it in clear view.

• Do not remove the cut material, or let other persons remove cut material, while the engine is on or the cutting equipment rotates, as this can result in serious injury.

• The bevel gear can get hot during use and may remain so for a while afterwards. You could get burnt if you touch it.

• Always stop the engine and make sure that the cutting equipment does not rotate before you remove material that is wound around the blade shaft or caught between the guard and the cutting attachment. The cutting equipment continues to rotate even after the throttle has been released. Ensure that the cutting attachment has stopped completely and disconnect the spark plug cap before you start to work on it.

• Be careful when you remove material from around the cutting equipment. The bevel gear gets hot during operation and can cause burn injuries.

• The exhaust fumes from the engine are hot and can contain sparks. Risk of fire. Be careful around dry and flammable material.

• Stop the engine before you move to a new work area. Always attach the transport guard before you move the equipment.

• Never use the product indoors or in spaces lacking proper ventilation. Exhaust fumes contain carbon monoxide, an odourless, poisonous and highly dangerous ga can result in death due to asphyxiation or carbon monoxide poisoning.

• Never allow children to use or be in the vicinity of the product. As the product 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 product.
  This can mean a risk of serious personal injury.
  Therefore remove the spark plug cap when the product is not under close supervision.

• Overexposure to vibration can lead to circulatory damage or nerve damage in persons who have poor circulation. Speak to your physician if you experience symptoms of overexposure to vibration. Such symptoms include numbness, loss of feeling, tingling, pricking, pain, loss of strength, changes in skin color or condition.
  These symptoms usually show in the fingers, hands or wrists. The risk increases at low temperatures.

• Check that the cutting equipment is correctly fitted and adjusted.

• If you encounter a situation where you are uncertain how to proceed you should ask an expert. Contact your dealer or your service workshop.

• Avoid all usage which you consider to be beyond your capability.

• Do not use the product unless you are able to call for help in the event of an accident.

• Using an incorrect cutting attachment or an incorrectly sharpened blade increases the risk of blade thrust.

• Products fitted with grass blades can be thrown violently to the side when the blade comes into contact with a fixed object. This is called blade thrust. A blade thrust can be violent enough to cause the product and/or operator to be propelled in any direction, and possibly lose control of the product. Blade thrust can occur without warning if the product snags, stalls or binds. Blade thrust is more likely to occur in areas where it is difficult to see the material being cut.

• Avoid cutting with the area of the blade between the 12 o’clock and 3 o’clock positions. Because of the speed of rotation of the blade, blade thrust can occur if you attempt to cut thick stems with this area of the blade.

• Mufflers fitted with catalytic converters get very hot during use and remain so for some time after stopping. This also applies at idle speed. Contact can result in burns to the skin. Remember the risk of fire.

• Only use cutting attachments with the guards we recommend. Refer to Accessories on page 23.

Personal protective equipment
WARNING: Read the warning instructions that follow before you use the product.

• Always use approved personal protective equipment when you use the product. Personal protective equipment cannot fully prevent injury but it decreases the degree of injury if an accident does occur. Let your dealer help you select the correct equipment.
• Use approved hearing protection. (Fig. 15)
• Use approved eye protection. If you use a visor, you must also use approved protective goggles. Approved protective goggles must comply with the ANSI Z87.1 standard in the USA or EN 166 in EU countries. (Fig. 16)
• Use gloves when it is necessary, for example when you attach, examine or clean the cutting equipment. (Fig. 17)
• Use protective boots with steel toe-cap and non- slip soles. (Fig. 18)
• Use clothing made of a strong fabric. Always use heavy, long pants and long sleeves. Do not use loose clothing that can catch on twigs and branches. Do not use jewelry, short pants or sandals. Do not go with bare feet. Put your hair up safely above shoulder  level.
• Keep first aid equipment near. (Fig. 19)

Safety devices on the product
For information about where to find the safety devices, see Introduction on page 9.
WARNING: Read the warning instructions that follow before you use the product.

• Do not use a product with damaged safety devices. Do a check of and do maintenance on the safety devices regularly. If the safety devices are damaged, speak to your Husqvarna service agent.
• Do not make changes to safety devices. Do not use the product if protective covers, safety switches or other protective devices are not attached or are damaged.
• For all service and repair work on the product, especially for the safety devices, special training is necessary. If the safety devices fail the checks given in this operator’s manual, you must let a service agent help you. We guarantee that professional repairs and service is available. If your dealer is not a service agent, speak to them for information about the nearest service agent.
• Do not use a cutting attachment without an approved and correctly attached cutting attachment guard. See Accessories on page 23.

To do a check of the throttle trigger lockout

1. Make sure that the throttle trigger lockout (A) and throttle trigger (B) move freely and that the return spring works correctly. (Fig. 20)
2. Push down the throttle trigger lockout and make sure that it goes back to its initial position when you release it. (Fig. 21)
3. Make sure that the throttle trigger is locked at the idle position when the throttle trigger lockout is released. (Fig. 22)
4. Start the product and apply full throttle.
5. Release the throttle trigger and make sure that the blades stop and stay stationary.

WARNING: If the blades move when the throttle trigger is in the idle position, then the carburetor idle speed must be adjusted. Refer to To adjust the idle speed on page 20.
To do a check of the stop switch

1. Start the engine.
2. Move the stop switch to the stop position and make sure that the engine stops. (Fig. 23)

To do a check of the cutting attachment guard
The cutting attachment guard prevents injuries and stops objects that eject in the direction of the operator.

1. Stop the engine.
2. Do a visual check for damages, for example cracks. (Fig. 24)
3. Replace the cutting attachment guard if it is damaged.

To adjust the harness
Always use the harness when you operate the product. The harness gives maximum control during operation of the product. The harness decreases the risk of tiredness in your arms and back.
WARNING: Do not use a damaged harness.

1. Examine the harness for damage and wear.
   Always replace a damaged harness.

2. Put on the harness.

3. Adjust the length of the harness until the support hook is approximately level with your right hip. (Fig. 25)

To do a check of the muffler
WARNING: Do not use a product that has a damaged muffler.
WARNING: Do not use the product if the spark arrester screen on the muffler is missing or damaged.
WARNING: The muffler becomes very hot during and after operation and also at idle speed. Use protective gloves to prevent burn injuries.

The muffler keeps noise levels to a minimum and points exhaust fumes away from the operator.

1. Stop the engine.

2. Examine the muffler for damage.
   WARNING: The inner surfaces of the muffler contain chemicals that can cause cancer. Be careful not to touch these elements if the muffler is damaged.

3. Make sure that the muffler is correctly attached to the product. (Fig. 26)

4. Do a visual check of the spark arrester screen. (Fig. 27)

a) Replace the spark arrester screen if it is damaged.
b) Clean the spark arrester screen if it is blocked.
CAUTION: If the spark arrester screen is blocked the product becomes too hot and this causes damage to the cylinder and piston.
To install and remove the locknut
WARNING: Stop the engine, use protective gloves and be careful around the sharp edges of the cutting attachment.

A locknut is used to attach some types of cutting attachments. The locknut has a left hand thread.

• To install the locknut, turn the locknut in the opposite direction from the direction of rotation. (Fig. 28)
• To remove the locknut, remove the locknut in the direction of rotation.
• To loosen or tighten the locknut, use a socket wrench with a long shaft.

WARNING: When you loosen and tighten the locknut there is a risk of injury from the cutting attachment.
Be careful and do not touch the cutting attachment.
Note: Make sure that you can not turn the locknut by hand. Replace the locknut after it has been put on approximately 10 times. The locknut must be replaced after it has been put on approximately 10 times.
Cutting attachment
WARNING: Read the warning instructions that follow before you use the product.

• Do the regular maintenance. Let an approved service center regularly examine the cutting attachment to do adjustments or repairs.

• The performance of the cutting attachment increases.

• The life of the cutting attachment increases.

• The risk of accidents decreases.

• Only use an approved cutting attachment guard.
  Refer to Accessories on page 23.

• Do not use a damaged cutting attachment.

Grass trimmer head

• Make sure that you wind the grass trimmer line tightly and equally around the drum to decrease the vibration.
• Use only the approved grass trimmer heads and grass trimmer lines. Refer to To trim the grass on page 18.
• Use a correct length of the grass trimmer line. A long grass trimmer line uses more engine power than a short grass trimmer line.
• Make sure that the cutter on the cutting attachment guard is not damaged.
• Soak the grass trimmer line in water for 2 days before you attach the grass trimmer line to the product. This increases the life of the grass trimmer line.
• Refer to the instructions for the cutting attachment to use the correct procedure to load the cord and the correct cord diameter.

Grass blade

• Use correctly sharpened blades. An incorrectly sharpened or damaged blade increases the risk of injury. Refer to the instructions on the blade packaging.
• Use correctly set blades. An incorrectly set blade increases the risk of injury and damage.

Fuel safety
WARNING: Read the warning instructions that follow before you use the product.

• Do not mix the fuel indoor or near a heat source.

• Do not start the product if there is fuel or engine oil on the product. Remove the unwanted fuel/oil and let the product dry. Remove unwanted fuel from the product.

• If you spill fuel on your clothing, change clothing immediately.

• Do not get fuel on your body, it can cause injury.
  If you get fuel on your body, use a soap and water to remove the fuel.

• Do not start the engine if you spill oil or fuel on the product or on your body.

• Do not start the product if the engine has a leak.
  Examine the engine for leaks regularly.

• Be careful with fuel. Fuel is flammable and the fumes are explosive and can cause injuries or death.

• Do not breathe in the fuel fumes, it can cause injury. Make sure that there is sufficient airflow.

• Do not smoke near the fuel or the engine.

• Do not put warm objects near the fuel or the engine.

• Do not add the fuel when the engine is on.

• Make sure that the engine is cool before you refuel.

• Before you refuel, open the fuel tank cap slowly and release the pressure carefully.

• Make sure there are sufficient airflow when refueling and mixing fuel (petrol and two-stroke oil) or draining the fuel tank.

• Fuel and fuel vapor are highly flammable and can cause serious injury when inhaled or allowed to come into contact with the skin. For this reason, observe caution when handling fuel and make sure there is sufficient airflow.

• Tighten the fuel tank cap carefully or a fire can occur.

• Move the product at a minimum of 3 m (10 ft) from the position where you filled the tank before a start.

• Do not put too much fuel in the fuel tank.

• Make sure that a leak cannot occur when you move the product or fuel container.

• Do not put the product or a fuel container where there is an open flame, spark or pilot light. Make sure that the storage area does not contain an open flame.

• Only use approved containers when you move the fuel or put the fuel into storage.

• Empty the fuel tank before long-term storage.
  Obey the local law on where to dispose fuel.

• Clean the product before long-term storage.

• Remove the spark plug cap before you put the product into storage to make sure that the engine does not start accidentally.

Safety instructions for maintenance
WARNING: Read the warning instructions that follow before you use the product.

• Stop the engine, make sure that the cutting attachment stops and let the product cool down before you do the maintenance.
• Disconnect the spark plug cap before you do the maintenance.
• The exhaust fumes from the engine contain carbon monoxide, an odorless, poisonous and very dangerous gas that can cause death. Do not run the product indoors or in closed spaces.
• The exhaust fumes from the engine are hot and can contain sparks. Do not run the product indoors or near flammable material.
• Accessories and changes to the product that are not approved by the manufacturer, can cause serious injury or death. Do not change the product. Always use original accessories.
• If the maintenance is not done correctly and regularly, there is an increased risk of injury and damage to the product.
• Only do the maintenance as this operator’s manual recommends. Let an approved Husqvarna service agent do all other servicing.
• Let an approved Husqvarna service agent do servicing on the product regularly.
• Replace damaged, worn or broken parts.

Assembly

Introduction
WARNING: Before you assemble the product, you must read and understand the safety chapter.
WARNING: Remove the spark plug cable from the spark plug before you assemble the product.

To install the J-handle
WARNING: Use only grass blades or trimmer heads with the J-handle.

1. Put the J-handle between the 2 arrows on the shaft. (Fig. 29)
2. Install the screw, the plate and the wing nut.
3. Adjust the J-handle to a good work position. (Fig. 30)
4. Tighten the wing nut fully.

To install the harness clamp
WARNING: The harness must be attached safely to the harness clamp when you operate the product.

1. Put the 2 halves of the harness clamp onto the shaft and align the screw holes. (Fig. 31)
2. Install the 2 screws.
3. Adjust the harness clamp to the correct position above the arrow.
4. Tighten the 2 screws fully.

To assemble the cutting equipment
The cutting equipment includes a cutting attachment and a cutting attachment guard.
WARNING: Use protective gloves.
WARNING: Always use the cutting attachment guard that is recommended for the cutting attachment. See Accessories on page 23.
WARNING: An incorrectly attached cutting attachment can result in injury or death.
To install the cutting attachment guard and the grass blade

1. Put the cutting attachment guard (A) onto the shaft and tighten the bolt. (Fig. 32)
2. Turn the output shaft to align one of the holes in the drive disc (B) with the related hole in the gear housing.
3. Put the locking pin (C) in the hole to lock the shaft.
4. Put the grass blade (D), the support cup (E) and the support flange (F) on the output shaft. (Fig. 33)
5. Make sure that the drive disc and support flange engages correctly in the center hole of the grass blade. (Fig. 34)
6. Attach the nut (G).
7. Tighten the nut with the socket wrench. Hold the shaft of the socket wrench near the cutting attachment guard. Tighten in the opposite direction to how the cutting attachment rotates.
   Torque the nut to 35–50 Nm. (Fig. 35)

To install the cutting attachment guard and the trimmer head
CAUTION: Make sure that the guard extension is assembled.

1. Install the cutting attachment guard (A) intended for operation with the trimmer head.
2. Hang the cutting attachment guard on the 2 hooks on the plate holder (B).
3. Bend the cutting attachment guard around the shaft and tighten the screw (C) on the opposite side of the shaft. Use the combination wrench to tighten the screw. (Fig. 36)
4. Install the drive disc (D) on the output shaft. (Fig. 37)
5. Turn the output shaft until 1 of the holes in the drive disc aligns with the related hole in the gear housing.
6. Put the locking pin (E) in the hole to lock the shaft.
7. Install the trimmer head (F) counterclockwise. (Fig. 38)
8. To remove the trimmer head and the cutting attachment guard, follow the instructions in the opposite sequence.

Operation

Introduction
WARNING: Before you operate the product, you must read and understand the safety chapter.

Before you operate the product

• Examine the work area to make sure that you know the type of terrain, the slope of the ground and if there are obstacles such as stones, branches and ditches.
• Do an overhaul inspection of the product.
• Do the safety inspections, maintenance and servicing that are given in this manual.
• Make sure that all covers, guards, handles and the cutting equipment are correctly attached and not damaged.
• Make sure that there are no cracks at the bottom of the grass blade teeth or by the center hole of the blade. Replace the blade if it is damaged. (Fig. 39)
• Examine the support flange for cracks. Replace the support flange if it is damaged. (Fig. 40)
• Make sure that the locknut can not be removed by hand. If you can remove it by hand, it does not lock the cutting attachment sufficiently and you must replace it. (Fig. 41)
• Examine the blade guard for damages or cracks. Replace the blade guard if it has been hit or if it has cracks. (Fig. 42)
• Examine the trimmer head and cutting attachment guard for damages or cracks.
  Replace the trimmer head and cutting attachment guard if they have been hit or if they have cracks. (Fig. 43)

Fuel
This product has a two-stroke engine.
CAUTION: Incorrect type of fuel can result in engine damage. Use a mixture of gasoline and two-stroke oil.
Premixed fuel

• Use Husqvarna premixed alkylate fuel for best performance and extension of the engine life. This fuel contains less harmful chemicals compared to regular fuel, which decreases harmful exhaust fumes. The quantity of remains after combustion is lower with this fuel, which keeps the components of the engine more clean.

To mix fuel
Gasoline
Use good quality unleaded gasoline with a maximum of 10% ethanol contents.

• Use good quality unleaded gasoline with a maximum of 10% ethanol contents.

CAUTION: Do not use gasoline with an octane grade less than 90 RON/87 AKI. Use of a lower octane grade can cause engine knocking, which causes engine damages.

Two-stroke oil

• For best results and performance use Husqvarna two-stroke oil.
• If Husqvarna two-stroke oil is not available, use a two-stroke oil of good quality for air-cooled engines. Speak to your servicing dealer to select the correct oil.

CAUTION: Do not use twostroke oil for water-cooled outboard engines, also referred to as outboard oil. Do not use oil for four-stroke engines.
To mix gasoline and two-stroke oil

CAUTION: Small errors can influence the ratio of the mixture drastically when you mix small quantities of fuel. Measure the quantity of oil carefully and make sure that you get the correct mixture.
(Fig. 44)

1. Fill half the quantity of gasoline in a clean container for fuel.
2. Add the full quantity of oil.
3. Shake the fuel mixture.
4. Add the remaining quantity of gasoline to the container.
5. Carefully shake the fuel mixture.

CAUTION: Do not mix fuel for more than 1 month at a time.
To fill the fuel tank
WARNING: Obey the procedure that follows for your safety.

1. Stop the engine and let the engine become cool.

2. Clean the area around the fuel tank cap. (Fig. 45)

3. Shake the container and make sure that the fuel is fully mixed.

4. Remove the fuel tank cap slowly to release the pressure.

5. Fill the fuel tank.
   CAUTION: Make sure that there is not too much fuel in the fuel tank.
   The fuel expands when it becomes hot.

6. Tighten the fuel tank cap carefully.

7. Clean fuel spillage on and around the product.

8. Move the product 3 m/10 ft or more away from the refueling area and fuel source before you start the engine.

Note: To see where the fuel tank is on your product, refer to Introduction on page 9.
To prepare for grass clearing

1. Apply support to the product with the harness during grass clearing.
2. Make sure that the cutting equipment is parallel to the ground.

To start a cold engine

1. Push the air purge bulb 10 times. (Fig. 46)

2. Move choke control to the full choke position. (Fig. 47)

3. Hold the body of the product on the ground with your left hand. Do not step on the product. Pull the starter rope handle slowly until you feel some resistance. (Fig. 48)
   Note: Do not pull the throttle trigger while you start the engine.

4. Pull the starter rope handle 3 times with force.
   CAUTION: Do not pull the starter rope until it stops. Do not let go of the starter rope when it is fully extended. Release the starter rope slowly. Failure to obey these instructions can cause damage to the engine.

5. Move the choke control to the half choke position.

6. Pull the starter rope handle until the engine starts.

7. Let the engine run for 10 seconds.

8. Move the choke control to the no choke position.

To start a warm engine

1. Slowly push the air purge bulb 10 times.
2. Move the choke lever to the HALF CHOKE position.
3. Pull the starter rope handle quickly until the engine runs.
4. Move the choke lever to the NO CHOKE position.

To stop the product

• Push the stop switch to stop the engine. (Fig. 23)

Note: The stop switch automatically goes back to its initial position.
Grass trimming with a trimmer head
To trim the grass

1. Hold the trimmer head immediately above the ground at an angle. Do not push the trimmer line into the grass. (Fig. 49)
2. Decrease the length of the trimmer line by 10-12 cm / 4-4.75 in.
3. Decrease the engine speed to decrease the risk of damage to plants.
4. Use 80 % throttle when you cut grass near objects. (Fig. 50)

To clear grass with a grass blade

1. Grass blades and grass cutters must not be used on woody stems.

19 Page Start

Do a check of the throttle trigger lockout and the throttle trigger. Refer to To do a check of the throttle trigger lockout on page 13.| X|  |
Make sure that the cutting attachment does not rotate at idle speed.| X|  |
Do a check of the stop switch. Refer to To do a check of the stop switch on page 13.| X|  |
Examine the cutting attachment guard for damages and cracks.| X|  |
Make sure that the grass blade is aligned with the center. Make sure that the grass blade is sharp and that the blade or center hole is not damaged.| X|  |
Examine the trimmer head for damages and cracks. Replace if it is dam- aged.| X|  |
Examine the handle and handlebar for damage and make sure that they are attached correctly.| X|  |
For cutting attachments with a support cup, tighten the locking screw fully.| X|  |
For cutting attachments with a locknut, tighten the locknut fully.| X|  |
Examine the transport guard for damage and make sure that it can be attached correctly.| X|  |
Examine the engine, the fuel tank and the fuel lines for leaks.| X|  |
Clean the air filter. Replace if it is necessary.| X|  |
Tighten nuts and screws.| X|  |
Examine the fuel filter for contamination and the fuel hose for cracks and other damages. Replace if it is necessary.| X|  |
Examine all cables and connections.| X|  |
Examine the starter and the starter rope for damages.|  | X|
Examine the vibration damping units for damages and cracks.|  | X|
Examine the spark plug. Refer to To do a check of the spark plug on page 21.| | X|
Clean the cooling system.|  | X|
Make sure that the bevel gear is filled to ¾ with grease.|  | X|
Clean the external surface of the carburetor and the area around it.|  | X|
Clean the spark plug. Remove the spark plug and do a check of the elec- trode gap.|  | X|
Clean or replace the spark arrester screen on the muffler.|  | X|
Examine the clutch, clutch springs and the clutch drum for wear. Replace if it is necessary.|  |  | X
Replace the spark plug.|  |  | X
Lubricate the drive shaft.1|  |  | X
Make sure that the safety release on the harness is not damaged and operates correctly.|  |  | X
Examine and clean the spark arrester screen on the muffler.|  |  | X

fuel.
Carburetor| The idle speed is not correct.| Speak to your servicing dealer.
Air filter| Clogged air filter.| Clean or replace the air filter.
Fuel filter| Clogged fuel filter.| Replace the fuel filter.
Check| Possible cause| Procedure
---|---|---
Stop switch.| The stop switch is in the stop position.| Set the stop switch to the start position.
Starter pawls.| The starter pawls cannot move freely.| Remove the starter cover and clean around the starter pawls.
Let an approved service agent help you.
Fuel tank.| Incorrect fuel type.| Drain the fuel tank and fill with correct fuel.
Spark plug.| The spark plug is dirty or wet.| Make sure that the spark plug is dry and clean.
The spark plug electrode gap is incorrect.| Clean the spark plug. Make sure that the electrode gap is correct. Make sure that the spark plug has a supressor.
Refer to technical data for correct elec- trode gap.
The spark plug is loose.| Tighten the spark plug.
 | 128LX, LT28CSHV
---|---
Engine|
Cylinder displacement, cu.in/cm3| 1.7/28
Idle speed, rpm| 2300–3200
Recommeded max. speed, rpm| 8000
Maximum engine power acc. to ISO 8893, kW/hp @ rpm| 0.7/0.94 @ 8000
Catalytic converter muffler| Yes
Maximum output shaft rotation| 7200
 | 128LX, LT28CSHV
Ignition system 2|
Spark plug| Champion RCJ 8Y
Electrode gap, in./mm| 0.024/0.6
Fuel and lubrication system|
Fuel tank capacity, US pint/l| 0.85/0.4
Weight|
Weight, lb/kg| 11.0/5.0
Approved accessories| Accessory type| Cutting attachment guard, art. no.
---|---|---
Center hole in blades/cutters, Ø 25.4 mm
Output shaft thread M10 LH|  |
Grass blade/grass cutter| Multi 255-4 (Ø 255 4 teeth)| 580 44 66-06
Trimmer head| T25 (Ø 2.4 mm cord)| 580 44 66-06
Support cup| 503 89 01-01| N/A

References

• Husqvarna Forest & Garden

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