STIHL BR 350 Backpack Blower Instruction Manual

: June 9, 2024
: STIHL

STIHL BR 350 Backpack Blower

Guide to Using this Manual

Pictograms
The meanings of the pictograms attached to the machine are explained in this manual.
Depending on the model concerned, the following pictograms may be attached to your machine.
Fuel tank; fuel mixture of gasoline and engine oil
Operate manual fuel pump

Symbols in text

WARNING
Warning where there is a risk of an accident or personal injury or serious damage to property.

NOTICE
Caution where there is a risk of damaging the machine or its individual components.

Engineering improvements
STIHL’s philosophy is to continually improve all of its products. For this reason we may modify the design, engineering and appearance of our products periodically.
Therefore, some changes, modifications and improvements may not be covered in this manual.

Safety Precautions and Working Techniques

Special safety precautions must be observed when working with a power tool.
It is important that you read the instruction manual before first use and keep it in a safe place for future reference. Non-observance of the instruction manual may result in seri‐ous or even fatal injury.

Observe all applicable local safety regulations, standards and ordinances.
If you have not used this model before: Have your dealer or other experienced user show you how it is operated or attend a special course in its operation.

Minors should never be allowed to use this product.
Keep bystanders, especially children, and animals away from the work area.
When the power tool is not in use, put it in a place where it does not endanger others. Secure it against unauthorized use.
The user is responsible for avoiding injury to third parties or damage to their property.
Do not lend or rent your power tool without the instruction manual. Be sure that anyone using your power tool understands the information contained in this manual.

The use of noise-emitting power tools may be restricted to certain times by national or local regulations.
Do not operate your power tool if any of its components are damaged.
Do not use a pressure washer to clean your power tool. The solid jet of water may damage parts of the power tool.

Accessories and replacement parts

Only use parts and accessories that are explicitly approved for this power tool by STIHL or are technically identical. If you have any questions in this respect, consult a servicing dealer. Use only high quality parts and accessories in order to avoid the risk of accidents and damage to the machine.

STIHL recommends the use of original STIHL replacement parts and accessories. They are specifically designed to match the product and meet your performance requirements.
Never attempt to modify your machine in any way since this may increase the risk of personal injury. STIHL excludes all liability for personal injury and damage to property caused while using unauthorized attachments.

Physical Condition
To operate this power tool you must be rested, in good physical condition and mental health.
If you have any condition that might be aggravated by strenuous work, check with your doctor before operating a power tool.
Persons with pacemakers only: The ignition system of your power tool produces an electromagnetic field of a very low intensity. This field may interfere with some pacemakers. To reduce health risks, STIHL recommends that persons with pacemakers consult their physician and the pacemaker manufacturer before operating this power tool.
Do not operate the sprayer if you are under the influence of any substance (drugs, alcohol) which might impair vision, dexterity or judgment.

Intended Use

The blower is designed for blow-sweeping leaves, grass, paper and similar materials, e.g. in gardens, sports stadiums, car parks and drive‐ways. It is also suitable for blow-sweeping forest paths.

Do not blow-sweep hazardous materials.
Do not use the machine for any other purpose because of the increased risk of accidents and damage to the machine. Never attempt to modify the product in any way since this may result in accidents or damage to the product.

Clothing and Equipment

Wear proper protective clothing and equipment.

Clothing must be sturdy but allow complete freedom of movement. Wear snug- fitting clothing, an overall and jacket combination, do not wear a work coat.
Avoid clothing with loose drawstrings, laces and ribbons, scarves, neckties, jewelry or anything that could be sucked into the air intake in the side and bottom of the machine. Tie up and confine long hair so that it cannot be sucked into the machine.

Wear sturdy shoes with non-slip soles.

WARNING
To reduce the risk of eye injuries, wear close-fitting safety glasses in accordance with European Standard EN 166. Make sure the safety glasses are a comfortable and snug fit.

Wear hearing protection, e.g. earplugs or ear muffs.
STIHL offers a comprehensive range of personal protective clothing and equipment.

Transporting the Power Tool

Always shut off the engine.

Transporting in a vehicle:

Properly secure your power tool to prevent turnover, fuel spillage and damage.

Fueling
Gasoline is an extremely flammable fuel. Keep clear of naked flames. Do not spill any fuel – do not smoke.

Always shut off the engine before refueling.
Do not fuel a hot engine – fuel may spill and cause a fire.

Always remove the power tool from your back and put it on the ground before refueling. Fuel the machine only when it is standing on the ground.

Open the fuel cap carefully to allow any pressure build-up in the tank to release slowly and avoid fuel spillage.

Fuel your power tool only in well-ventilated areas. If you spill fuel, wipe the machine immediately – if fuel gets on your clothing, change immediately.

Check for leakage. To reduce the risk of serious of fatal burn injuries, do not start or run the engine until leak is fixed.

Screw-type fuel cap
After fueling, tighten down the screw-type fuel cap as securely as possible.

This reduces the risk of unit vibrations causing the fuel cap to loosen or come off and spill quantities of fuel.

Before Starting

Check that your power tool is properly assembled and in good condition – refer to appropriate chapters in the instruction manual.

Check the fuel system for leaks, paying special attention to visible parts such as the tank cap, hose connections and the manual fuel pump (on machines so equipped). If there are any leaks or damage, do not start the engine risk of fire. Have your machine repaired by a servicing dealer before using it again.
Throttle trigger must move freely and spring back to the idle position when released.
The setting lever must move easily to STOP or 0
The blower tubes must be properly assembled.
Keep the handles dry and clean – free from oil and dirt – for safe control of the power tool.
Check that the spark plug boot is secure – a loose boot may cause arcing that could ignite leaking fuel-air mixture and cause a fire.
Never attempt to modify the controls or the safety devices in any way.
Check condition of blower housing.
Check condition of harness straps and backpack – replace damaged or worn straps.

A worn blower housing (cracks, nicks, chips) may result in an increased risk of injury from thrown foreign objects. If the blower housing is damaged, consult your dealer – STIHL recommends you contact a STIHL servicing dealer.
To reduce the risk of accidents, do not operate your power tool if it is not in a safe condition.

For emergencies: Practice quickly opening the fastener on the waist belt, loosening the shoulder straps and setting down the unit.

Start the engine.

Start the engine at least 3 meters from the fuel‐ing spot, outdoors only.
Your power tool is designed to be operated by one person only. Do not allow other persons in the work area – even when starting.
Do not drop start the power tool – start the engine as described in the instruction manual.
Place the power tool on level ground, make sure you have secure footing, hold the power tool securely.
As soon as the engine starts, the air flow may throw small objects (e.g. stones) in your direction.

During Operation

In the event of impending danger or in an emer‐gency, switch off the engine immediately by mov‐ing the setting lever to STOP or 0.
To reduce the risk of injury from thrown objects, do not allow any other persons within 15 meters of your own position.

To reduce the risk of damage to property , also maintain this distance from other objects (vehi‐cles, windows).

Do not direct the air blast towards bystanders or animals since the air flow can blow small objects at great speed – risk of injury.

When blow-sweeping (in open ground and gar‐dens), watch out for small animals to avoid harm‐ing them.
Never leave a running machine unattended.
Take special care in slippery conditions – damp, snow, ice,on slopes and uneven ground.
Watch out for obstacles: Be careful of refuse, tree stumps, roots and ditches which could cause you to trip or stumble.

Never work on a ladder or any other insecure support.
Be particularly alert and cautious when wearing hearing protection because your ability to hear warnings (shouts, alarms, etc.) is restricted.

Work calmly and carefully – in daylight conditions and only when visibility is good. Stay alert so as not to endanger others.

To reduce the risk of accidents , take a break in good time to avoid tiredness or exhaustion.

Your power tool produces toxic exhaust fumes as soon as the engine is running. These fumes may be colorless and odorless and contain unburned hydrocarbons and benzol. Never run the engine indoors or in poorly ventilated locations, even if your model is equipped with a catalytic converter.

To reduce the risk of serious or fatal injury from breathing toxic fumes , ensure proper ventilation when working in trenches, hollows or other confined locations.
To reduce the risk of accidents , stop work immediately in the event of nausea, headache, visual disturbances (e.g. reduced field of vision), problems with hearing, dizziness, deterioration in ability to concentrate. Apart from other possibilities, these symptoms may be caused by an excessively high concentration of exhaust gases in the work area.
To reduce the risk of fire , do not smoke while operating or standing near your power tool. Note that combustible fuel vapor may escape from the fuel system.
If dust levels are very high , always wear a suitable respirator.
Operate your power tool so that it produces a minimum of noise and emissions – do not run the engine unnecessarily, accelerate the engine only when working.
After finishing work, put the unit down on a level, non-flammable surface. To reduce the risk of fire, do not put it down near easily combustible materials (e.g. wood chips, bark, dry grass, fuel).
If your power tool is subjected to unusually high loads for which it was not designed (e.g. heavy impact or a fall), always check that it is in good condition before continuing work – see also “Before Starting Work”. Check the fuel system in particular for leaks and make sure the safety devices are working properly. Do not continue operating your power tool if it is damaged. In case of doubt, consult your servicing dealer.

Using the Blower

The machine is carried as a backpack. Hold and control the blower tube with your right hand on the control handle.
Walk slowly forwards as you work – observe the nozzle outlet at all times – do not walk back‐wards – risk of stumbling.
Always shut off the engine before taking the machine off your back.

Working Technique
To minimize blowing time, use a rake and broom to loosen dirt particles before you start blowing.

If necessary, dampen the surface to be cleaned in order to avoid creating too much dust.
Do not blow particles in the direction of bystanders, in particular in the direction of children, pets, open windows or freshly washed vehicles. Take special care in such situations.
Remove the blow-swept debris in rubbish bins
- do not blow it onto the neighbor’s land.
Operate your power tool at reasonable times only – not early in the morning, late at night or during midday rest periods when people could be disturbed. Observe local rest periods.
Operate blowers at the lowest engine speed necessary to accomplish the task.
Check your blower before starting work. Pay special attention to the muffler, air intakes and air filter.

Vibrations
Prolonged use of the power tool may result in vibration-induced circulation problems in the hands (whitefinger disease).
No general recommendation can be given for the length of usage because it depends on several factors.

The period of usage is prolonged by:

Keeping your hands warm
Work breaks

The period of usage is shortened by:

Any personal tendency to suffer from poor circulation (symptoms: frequently cold fingers, itching).
Low outside temperatures.
Gripping force (a tight grip hinders circulation).

Continual and regular users should monitor closely the condition of their hands and fingers. If any of the above symptoms appear (e.g. tingling sensation in fingers), seek medical advice.

Maintenance and Repairs

Service the machine regularly. Do not attempt any maintenance or repair work not described in the instruction manual. Have all other work performed by a servicing dealer.
STIHL recommends that you have servicing and repair work carried out exclusively by an authorized STIHL servicing dealer.
STIHL dealers are regularly given the opportunity to attend training courses and are supplied with the necessary technical information.
Only use high-quality replacement parts in order to avoid the risk of accidents and damage to the machine. If you have any questions in this respect, consult a servicing dealer.
STIHL recommends the use of genuine STIHL replacement parts. They are specifically designed to match your model and meet your performance requirements.
To reduce the risk of injury, always shut off the engine before carrying out any maintenance or repairs or cleaning the machine.
- Exception: Carburetor and idle speed adjustments.
Do not turn the engine over on the starter with the spark plug boot or spark plug removed since there is otherwise a risk of fire from uncontained sparking.
Do not service or store your machine near open flames.
Check the fuel filler cap for leaks at regular intervals.
Use only a spark plug of the type approved by STIHL and make sure it is in good condition –see “Specifications”.
Inspect the ignition lead (insulation in good condition, secure connection).

Check the condition of the muffler.

To reduce the risk of fire and damage to hearing, do not operate your machine if the muffler is damaged or missing.
Do not touch a hot muffler since burn injury will result.
Vibration behavior is influenced by the condition of the AV elements – check the AV elements at regular intervals.
Shut off the engine before rectifying problems.

Assembling the Unit

The combination wrench and screwdriver are in the supplied accessory bag.

Fitting the Pleated Hose on the Elbow

Ease the slip ring (2) apart and push it over the elbow (1).
Open the hose clamp (3) and fit it on the pleated hose (4).
Close the hose clamp (3) – engage tab in recess.
Push the pleated hose (4) over the slip ring (2) as far as stop.
Position the hose clamp (3) as shown in the illustration.
Tighten down the screw (arrow).

Mounting the blower tubes and nozzle

Assemble the blower tubes (5) and nozzle (6).

Mounting the control handle

Pull the ends of the clamp on the control han‐dle (7) apart and push it over stub of pleated hose (4).
Attach throttle cable to retainer on the hose clamp (3).

Adjusting the Control Handle

Put the machine on your back and adjust the harness – see “Fitting the Harness”.
Push the blower tube (5) into the stub of pleated hose (4) as far as the stop.
Move the control handle (7) along the tube to the most comfortable position.
Tighten down the screw on the control handle (7).

Adjusting the Throttle Cable

It may be necessary to correct the adjustment of the throttle cable after assembling the machine or after a prolonged period of operation.
Adjust the throttle cable only when the unit is completely and properly assembled.

Set throttle trigger to the full throttle position –as far as stop.
Carefully rotate the screw in the throttle trigger in the direction of the arrow until you feel initial resistance. Then rotate it another full turn.

Fitting the Harness

Adjusting the Harness

Pull the straps downwards to tighten the harness

Loosening the Harness

Lift the tabs of the two sliding adjusters.
Adjust the harness so that the backplate fits snugly and securely against your back

Fuel

The engine requires a mixture of gasoline and engine oil.

WARNING
Avoid direct skin contact with fuel and breathing in of gasoline fumes.

STIHL MotoMix
STIHL recommends using STIHL MotoMix. This pre-blended fuel is free of benzene and lead, is distinguished by a high octane rating, and always provides the proper mixing ratio.

STIHL MotoMix uses STIHL HP Ultra two-stroke engine oil for optimum engine life.
MotoMix is not available in all markets.

Mixing fuel

NOTICE
Unsuitable fuels or a mixing ratio that deviates from the specification can lead to severe engine damage. The engine, seals, fuel lines and fuel tank may be damaged if low-quality gasoline or engine oil is used.

Gasoline
Use only high-quality gasoline with an octane rating of at least 90 ROC – leaded or unleaded.
Gasoline with an alcohol component exceeding 10% can cause impaired engine performance in engines with manually adjustable carburetors and thus should not be used in these engines.
Engines with M-Tronic deliver full engine performance using gasoline with an alcohol component of up to 27% (E27).
Engine oil
If you mix the fuel yourself, use only STIHL two-stroke engine oil or another high-performance engine oil classified as JASO FB, JASO FC, JASO FD, ISO-L-EGB, ISO-L-EGC or ISO-L-EGD.
STIHL specifies STIHL HP Ultra two-stroke engine oil or an equivalent high- performance engine oil in order to maintain emission limits over the machine’s service life.
Mixing ratio
with STIHL two-stroke engine oil 1:50; 1:50 = 1 part oil + 50 parts gasoline
Examples
- Pour oil into an approved safety fuel canister first, then add gasoline and mix thoroughly

Storing fuel mixture
Store in approved safety fuel canisters only in a dry, cool and secure place protected against light and sunlight.

Fuel mixture deteriorates with age – mix only as much as needed for a few weeks. Do not store fuel mixture for longer than 30 days. The fuel mixture can become unusable more quickly if exposed to light, sunlight or low or high temperatures.
STIHL MotoMix however can be stored for up to 5 years without any problems.

Shake the canister containing the fuel mixture thoroughly before refueling

WARNING
Pressure may have built up in the canister – open it carefully.

The fuel tank and the canister in which fuel mixture is stored should be cleaned thoroughly from time to time

Residual fuel and the liquid used for cleaning must be disposed of in accordance with regulations and without harming the environment!

Fueling

Preparations

Before fueling, clean the filler cap and the area around it to ensure that no dirt falls into the tank.
Position the machine so that the filler cap faces up.

Opening screw-type tank cap

Turn the cap counterclockwise until it can be removed from the tank opening.
Remove the cap.

Filling up with fuel
Take care not to spill fuel while fueling and do not overfill the tank. STIHL recommends you use the STIHL filler nozzle (special accessory).

Closing screw-type tank cap

Place the cap in the opening.
Turn the cap clockwise as far as stop and tighten it down as firmly as possible by hand.

Information Before You Start

NOTICE
With the engine stopped and before starting,check the air intakes between the backplate and powerhead for blockages and clean if necessary.

Functions of setting lever
The power tool is equipped with different types of control handle.

Run position

Engine runs or is ready to start. Throttle trigger (2) can be moved to any position.

Switch off engine
Ignition is interrupted, engine stops. The setting lever (1) is not locked in this position. It springs back to the run position . The ignition is again ready for operation.

Fixed throttle

The throttle trigger (2) can be locked in any position:

To disengage the lock:

Return the setting lever (1) to the run position .

Run position
Engine runs or is ready to start. Throttle trigger (2) can be moved to any position.

Switch off engine
Ignition is interrupted, engine stops. The setting lever (1) is not locked in this position. It springs back to the run position F. The ignition is again ready for operation.

Lock position
The throttle trigger (2) can be locked in three positions: 1/3 throttle, 2/3 throttle and full throttle.
To disengage the lock, move the setting lever (1) back to the normal run position .

Starting / Stopping the Engine

Starting the Engine

Observe safety precautions.

NOTICE
Start your unit on a clean, dust-free surface only to ensure that no dust is sucked in.

The setting lever must be on
Press the fuel pump bulb at least eight times even if the bulb is filled with fuel.

Cold engine (cold start)

Push the choke knob in and turn it to .

Warm engine (warm start)

Push the choke knob in and turn it to .

Also use this setting if the engine has been running but is still cold.

Cranking

Place the unit securely on the ground and make sure that bystanders are well clear of the nozzle outlet.
Make sure you have a firm footing: Hold the unit with your left hand on the housing and put one foot against the base plate to prevent it slipping.
Pull the starter grip slowly with your right hand until you feel it engage and then give it a brisk strong pull. Do not pull out the starter rope to full length – it might otherwise break.
Do not let the starter grip snap back. Guide it slowly back into the housing so that the starter rope can rewind properly.
Continue cranking until the engine runs.

As soon as the engine runs

Operate the throttle trigger.
Choke knob automatically returns to the run position e when the throttle trigger is operated.

At very low outside temperatures

Open throttle slightly – warm up the engine for a short period.

Stopping the Engine

Move the setting lever in the direction of – the engine stops – the setting lever springs back to the on position.

Other Hints on Starting

Engine stalls in cold start position or under acceleration

Move the choke knob to and continue cranking until the engine runs.

Engine does not start in warm start position

Move the choke knob to c and continue cranking until the engine runs.

If the engine does not start

Check that all settings are correct.
Check that there is fuel in the tank and refuel if necessary.
Check that the spark plug boot is properly connected.
Repeat the starting procedure.

Fuel tank run until completely dry

After refueling, press the manual fuel pump bulb at least five times – even if the bulb is filled with fuel.
Set the choke knob according to engine temperature.
Start the engine.

Operating Instructions

During Operation
After a long period of full throttle operation, allow the engine to run for a short while at idle speed so that engine heat can be dissipated by the flow
of cooling air. This helps protect engine-mounted components (ignition, carburetor) from thermal overload.

After Finishing Work
Storing for a short period: Wait for the engine to cool down. Keep the machine in a dry place, well away from sources of ignition, until you need it again. For longer out-of-service periods – see “Storing the Machine”.

Replacing the Air Filter

Dirty air filters reduce engine power, increase fuel consumption and make starting more difficult.

If there is a noticeable loss of engine power

Turn the choke knob to .
Loosen the screws (1).
Remove the filter cover (2).
Remove the filter element (3).
Replace dirty or damaged filters.
Fit the new filter in the filter housing.
Fit the filter cover.
Fit the screws and tighten them down firmly.

Adjusting the Carburetor

General Information
The carburetor comes from the factory with a standard setting.
This setting provides an optimum fuel-air mixture under most operating conditions.

Preparations

Shut off the engine.
Check the air filter and clean or replace if necessary.
Check that the throttle cable is properly adjusted– readjust if necessary – see chapter on “Adjusting the Throttle Cable”.
Check the spark arresting screen (not in all models, country-specific) in the muffler and clean or replace if necessary.

Standard Setting

Turn high speed screw (H) counterclockwise as far as stop (no more than 3/4 turn).

Turn the low speed screw (L) clockwise as far as stop, then turn it back 3/4 turn.

Adjusting Idle Speed

Carry out the standard setting.
Start and warm up the engine.

Engine stops while idling

Turn the idle speed screw (LA) slowly clockwise until the engine runs smoothly.

Erratic idling behavior, engine stops even though setting of LA screw has been corrected, poor acceleration
Idle setting is too lean

Turn the low speed screw (L) counterclockwise,no further than stop,until the engine runs and accelerates smoothly.

Erratic idling behavior
Idle setting is too rich

Turn the low speed screw (L) clockwise, no further than stop, until the engine runs and accelerates smoothly.
It is usually necessary to change the setting of the idle speed screw (LA) after every correction to the low speed screw (L).

Fine Tuning for Operation at High Altitude

A slight correction of the setting may be necessary if the engine does not run satisfactorily:

Carry out the standard setting.
Warm up the engine.
Turn high speed screw (H) slightly clockwise (leaner) – no further than stop.

NOTICE
After returning from high altitude, reset the carburetor to the standard setting.
If the setting is too lean there is a risk of engine damage due to insufficient lubrication and overheating.

Spark Plug

If the engine is down on power, difficult to start or runs poorly at idle speed, first check the spark plug.
Fit a new spark plug after about 100 operating hours – or sooner if the electrodes are badly eroded. Install only suppressed spark plugs of the type approved by STIHL – see “Specifications”.

Removing the spark plug

Pull off the spark plug boot (1) vertically.
Unscrew the spark plug (2).

Checking the Spark Plug

Check electrode gap (A) and readjust if necessary– see “Specifications”.
Rectify the problems which have caused fouling of the spark plug.

Possible causes are:

Too much oil in fuel mix.
Dirty air filter.
Unfavorable running conditions.

WARNING
Arcing may occur if the adapter nut (1) is loose or missing. Working in an easily combustible or explosive atmosphere may cause a fire or an explosion. This can result result in serious injuries or damage to property.

Use resistor type spark plugs with a properly tightened adapter nut.

Installing the spark plug

Screw home the spark plug, fit the boot and press it down firmly.

Engine Running Behavior
If engine running behavior is unsatisfactory even though the air filter is clean and the carburetor is properly adjusted, the cause may be the muffler.
Have the muffler checked for contamination (carbonization) by your servicing dealer.

STIHL recommends that you have servicing and repair work carried out exclusively by an authorized STIHL servicing dealer.

Storing the Machine

If out of use for periods of about 30 days or longer

Drain and clean the fuel tank in a well ventilated area.
Dispose of fuel properly in accordance with local environmental requirements.
If a manual fuel pump is fitted: Press the manual fuel pump at least 5 times.
Start the engine and run it at idling speed until it stops
Thoroughly clean the machine, especially the cylinder fins and air filter.
Store the machine in a dry and safe location.
Keep out of the reach of children and other unauthorized persons
If the engine is down on power, have the spark arrestor in the muffler checked
Check the spacer for damage
Have a damaged spacer replaced immediately

Inspections and Maintenance by Dealer

Spark Arrestor in Muffler and Spacer

WARNING
To reduce the risk of damage to persons or objects from contact with hot parts, never operate the machine without a spacer, or with the spacer damaged.

Maintenance and Care

The following intervals apply for normal operating conditions. The specified intervals must be short‐ ened accordingly when working for longer than nor‐ mal or under difficult cutting conditions (extensive dust, etc.).| Before starting work| At the end of work and/or daily| Whenever tank is refilled| Weekly| Monthly| Annually| If faulty| If damaged| As required
---|---|---|---|---|---|---|---|---|---
Complete machine| Visual inspection (condi‐

tion, leaks)

| X| | X| | | | | |
Clean| | X| | | | | | |
Control handle| Function test| X| | X| | | | | |
Air filter| Clean| | | | | | | X| |
replace| | | | | | | | X|
The following intervals apply for normal operating conditions. The specified intervals must be short‐ ened accordingly when working for longer than nor‐ mal or under difficult cutting conditions (extensive dust, etc.).| Before starting work| At the end of work and/or daily| Whenever tank is refilled| Weekly| Monthly| Annually| If faulty| If damaged| As required
---|---|---|---|---|---|---|---|---|---
Manual fuel pump (if present)| check| X| | | | | | | |
Have repaired by a spe‐

cialist dealer1)

dealer1)

| | | | | | | X| |
Have replaced by serv‐

icing dealer1)

hours of operation

icing dealer1)

| X| | | | | | X| |
All accessible screws, nuts and bolts (not

adjusting screws)

icing dealer1)

| | | | | | | | X|
Blower air intake shield| check| X| | X| | | | | |
Clean| | | | | | | | | X
Throttle cable| set| | | | | | | | | X
Safety information label| replace| | | | | | | | X|
1)STIHL recommends STIHL dealers

Main Parts

Straight Nozzle1)
Blower Tube
Blower Tube
Control Handle
Throttle Trigger
Setting Lever
Pleated Hose
Back Padding
Backplate
Harness
Carrying Handle
Intake Screen
Filter Cover
Carburetor Adjusting Screws
Manual Fuel Pump
Choke Knob
Starter Grip
Tank Cap
Fuel Tank
Spark Plug Boot
Muffler with Spark Arresting Screen
Spacer
Serial Number

Specifications

Engine

Single-cylinder two-stroke engine

Displacement: 63.3cm3
Cylinder bore: 48 mm
Piston stroke: 35 mm
Idle speed: 3000 rpm
Engine power to ISO 7293: 2.1 kW (2.8 bhp)

Ignition system
Electronic magneto ignition

Spark plug (suppressed): NGK BPMR 7 A,Bosch WSR 6 F
Electrode gap: 0.5 mm

Fuel system
All-position diaphragm carburetor with integral fuel pump

Fuel tank capacity: 1700 cm3 (1.7 l)

Blowing capacity

Blowing force 17 N
Air velocity 75 m/s
Air throughput: 740 m3/h
Maximum air speed 90 m/s
Maximum airflow rate without blower tube: 1150 m3/h

Weight

Without fuel: 10 kg

Sound and Vibration Levels
When determining sound and vibration levels,idling and the nominal maximum engine speed are taken into account in a ratio of 1:6.

For further details on compliance with Vibration
Directive 2002/44/EC, see

www.stihl.com/vib

Sound pressure level Lpeq according to
DIN EN 15503:2010

BR 350: 98 dB(A)

Sound power level Lweq according to DIN EN 15503:2010

BR 350: 106 dB(A

Vibration measurement ahv,eq according to DIN EN 15503:2010

Standard version Handle,right
BR 350: 3.9 m/s2

Version with bicycle handle Handle, left Handle,right
BR 350: 2.5 m/s2 2.5 m/s2

The K‑factor in accordance with Directive 2006/42/EC is 2.0 dB(A) for the sound pressure level and sound power level; the K‑factor in accordance with Directive 2006/42/EC is 2.0 m/s2 for the vibration level.

REACH
REACH is an EC regulation and stands for the Registration, Evaluation, Authorization and Restriction of Chemical substances.
For information on compliance with the REACH regulation (EC) No. 1907/2006 see www.stihl.com/reach

Exhaust Emissions
The CO2 value measured in the EU type approval procedure is specified at www.stihl.com/co2 in the product-specific technical data.
The measured CO2 value was determined on a representative engine in accordance with a standardized test procedure under laboratory conditions and does not represent either an explicit or implied guarantee of the performance of a specific engine.
The applicable exhaust emission requirements are fulfilled by the intended usage and maintenance described in this User Manual. The operating license shall be void if the engine is modified in any way.

Maintenance and Repairs

Users of this machine may only carry out the maintenance and service work described in this user manual. All other repairs must be carried out by a servicing dealer.
STIHL recommends that you have servicing and repair work carried out exclusively by an authorized STIHL servicing dealer. STIHL dealers are regularly given the opportunity to attend training courses and are supplied with the necessary technical information.
When repairing the machine, only use replacement parts which have been approved by STIHL for this power tool or are technically identical.
Only use high-quality replacement parts in order to avoid the risk of accidents and damage to the machine.
STIHL recommends the use of original STIHL replacement parts.

Original STIHL parts can be identified by the STIHL part number, the { logo and the STIHL parts symbol K (the symbol may appear alone on small parts).

Disposal
Contact the local authorities or your STIHL servicing dealer for information on disposal.
Improper disposal can be harmful to health and pollute the environment.

Take STIHL products including packaging to a suitable collection point for recycling in accordance with local regulations.
Do not dispose with domestic waste.

EC Declaration of Conformity

ANDREAS STIHL AG & Co. KG
Badstr. 115
D-71336 Waiblingen
Germany declare in exclusive responsibility that the product

Category: Blower
Make: STIHL
Model: BR 350
Serial identification: 4244
Displacement: 63.3 cm3

conforms to the provisions of Directives 2011/65/EU, 2006/42/EC, 2014/30/EU and 2000/14/EC and has been developed and manufactured in compliance with the following standards in the versions valid at the time of production:
EN ISO 12100, EN 15503, EN 55012,EN 61000‑6‑1

The measured and the guaranteed sound power level have been determined in accordance with Directive 2000/14/EC, Annex V, and standard ISO 11094.

Measured sound power level
BR 350: 105 dB(A)

Guaranteed sound power level
BR 350: 107 dB(A)

Technical documents deposited at:
ANDREAS STIHL AG & Co. KG
Produktzulassung (Product Licensing)
The year of manufacture and serial number are applied to the product.
Done at Waiblingen, 03.03.2020
ANDREAS STIHL AG & Co. KG

Dr. Jürgen Hoffmann
Director Product Certification & Regulatory
Affairs

Printed on chlorine-free paper
Printing inks contain vegetable oils, paper can be recycled

www.stihl.com