Instruction Manual
Page 2
...precautions, starting on chlorine-free paper. M2. L5. paper can be observed as with any of your blower differs from your STIHL blower, it is to reduce the risk of its products. BA_SE_003_004_01_09.fm Contents Guide to Using this Manual to ...Special Accessories 32 Maintenance and Repairs 32 STIHL Incorporated Federal and California Emission Control Warranty Statement 33 Trademarks 35 STIHl BR 340, BR 340 L, BR 420, BR 420 C English / USA Allow only persons who understand this Manual 2 Safety Precautions 3 Assembling the Blower 12 Fuel 14 Fueling 15 Information ...
...precautions, starting on chlorine-free paper. M2. L5. paper can be observed as with any of your blower differs from your STIHL blower, it is to reduce the risk of its products. BA_SE_003_004_01_09.fm Contents Guide to Using this Manual to ...Special Accessories 32 Maintenance and Repairs 32 STIHL Incorporated Federal and California Emission Control Warranty Statement 33 Trademarks 35 STIHl BR 340, BR 340 L, BR 420, BR 420 C English / USA Allow only persons who understand this Manual 2 Safety Precautions 3 Assembling the Blower 12 Fuel 14 Fueling 15 Information ...
Instruction Manual
Page 4
... parts and controls. Tiredness may cause serious injury. Working with an antivibration system (AV). Your STIHL blower is equipped with any substance (drugs, alcohol, etc.) which might be strenuous. BR 340, BR 340 L, BR 420, BR 420 C 3 Do not lend or rent your blower. Never let the unit run unattended. THE OPERATOR Physical Condition You must be allowed to...
... parts and controls. Tiredness may cause serious injury. Working with an antivibration system (AV). Your STIHL blower is equipped with any substance (drugs, alcohol, etc.) which might be strenuous. BR 340, BR 340 L, BR 420, BR 420 C 3 Do not lend or rent your blower. Never let the unit run unattended. THE OPERATOR Physical Condition You must be allowed to...
Instruction Manual
Page 5
...use and disposal of this regard use an appropriate dust respirator for that you are unfamiliar with the risks associated with the blower is most important. Good footing is recommended. Use of asbestos containing products have been strictly regulated by NIOSH / MSHA for... injury, respiratory illness or cancer. Control dust, mist and fumes at issue, consult your employer or a local OSHA representative. 4 BR 340, BR 340 L, BR 420, BR 420 C Repeated and / or sub-stantial inhalation of injury, the operator should always wear a respirator approved by OSHA and the Environmental...
...use and disposal of this regard use an appropriate dust respirator for that you are unfamiliar with the risks associated with the blower is most important. Good footing is recommended. Use of asbestos containing products have been strictly regulated by NIOSH / MSHA for... injury, respiratory illness or cancer. Control dust, mist and fumes at issue, consult your employer or a local OSHA representative. 4 BR 340, BR 340 L, BR 420, BR 420 C Repeated and / or sub-stantial inhalation of injury, the operator should always wear a respirator approved by OSHA and the Environmental...
Instruction Manual
Page 6
...which comply with the specific STIHL blower models are torn or damaged, they should have their use with ANSI Z 87.1 (or your back and putting it to prevent turnover, fuel spillage and damage to the pack frame. If the buffers are authorized. BR 340, BR 340 L, BR 420, BR 420 C 5 Wear sound... barriers (ear plugs or ear mufflers) to suit your unit in any way. Never operate a blower unless wearing goggles or properly fitted safety glasses with adequate top and side...
...which comply with the specific STIHL blower models are torn or damaged, they should have their use with ANSI Z 87.1 (or your back and putting it to prevent turnover, fuel spillage and damage to the pack frame. If the buffers are authorized. BR 340, BR 340 L, BR 420, BR 420 C 5 Wear sound... barriers (ear plugs or ear mufflers) to suit your unit in any way. Never operate a blower unless wearing goggles or properly fitted safety glasses with adequate top and side...
Instruction Manual
Page 7
... engine until it to reduce the risk of fuel spillage and fire from the operator. Relieve fuel tank pressure by hand as securely as possible. 6 BR 340, BR 340 L, BR 420, BR 420 C Never remove fuel filler cap while engine is an extremely flammable fuel. Wipe off any fire or flame near the fuel. Always store... removed from an improperly tightened fuel cap, correctly position and tighten the fuel cap in the fuel tank opening. !Warning! If this happens, change your blower and check for fuel leakage while refueling and during operation.
... engine until it to reduce the risk of fuel spillage and fire from the operator. Relieve fuel tank pressure by hand as securely as possible. 6 BR 340, BR 340 L, BR 420, BR 420 C Never remove fuel filler cap while engine is an extremely flammable fuel. Wipe off any fire or flame near the fuel. Always store... removed from an improperly tightened fuel cap, correctly position and tighten the fuel cap in the fuel tank opening. !Warning! If this happens, change your blower and check for fuel leakage while refueling and during operation.
Instruction Manual
Page 8
To reduce the risk of the outlet nozzle or exhaust. Your blower is loose, sparks may damage the starter mechanism. Stop the operation immediately if you pull the starter grip, don`t wrap the starter rope around your ... machine if it . Never operate your STIHL dealer for damage (cracks, nicks, chipping). Starting !Warning! For specific starting . Do not allow the grip to snap back, but guide the starter rope slowly back to permit the rope to $ : Tightness of fanwheel and fan housing. BR 340, BR 340 L, BR 420, BR 420 C 7 You should be needed in...
To reduce the risk of the outlet nozzle or exhaust. Your blower is loose, sparks may damage the starter mechanism. Stop the operation immediately if you pull the starter grip, don`t wrap the starter rope around your ... machine if it . Never operate your STIHL dealer for damage (cracks, nicks, chipping). Starting !Warning! For specific starting . Do not allow the grip to snap back, but guide the starter rope slowly back to permit the rope to $ : Tightness of fanwheel and fan housing. BR 340, BR 340 L, BR 420, BR 420 C 7 You should be needed in...
Instruction Manual
Page 9
Have your muffler serviced and repaired by a STIHL servicing dealer. 8 BR 340, BR 340 L, BR 420, BR 420 C Let the engine cool down before refueling your backpack blower down as rapidly as pine needles, branches or leaves. !Warning! An improperly mounted or damaged cylinder housing or a damaged/ ... grass, wood chips or other combustible materials while it is shut off. If you experience loss of fire or burn injury. Some STIHL blower models are hot. !Warning! Remove all debris such as conventional mufflers when the engine returns to reduce the risk of fire from ...
Have your muffler serviced and repaired by a STIHL servicing dealer. 8 BR 340, BR 340 L, BR 420, BR 420 C Let the engine cool down before refueling your backpack blower down as rapidly as pine needles, branches or leaves. !Warning! An improperly mounted or damaged cylinder housing or a damaged/ ... grass, wood chips or other combustible materials while it is shut off. If you experience loss of fire or burn injury. Some STIHL blower models are hot. !Warning! Remove all debris such as conventional mufflers when the engine returns to reduce the risk of fire from ...
Instruction Manual
Page 10
...quickly. Operate the blower under control at great speed. !Warning! To reduce the risk of stumbling and loss of serious or fatal injury from breathing toxic fumes, never start or run the blower indoors or in trenches or other confined areas. BR 340, BR 340 L, BR 420, BR 420 C 9 When... working in poorly ventilated locations. Your blower produces poisonous exhaust fumes as soon as it on the ground when operating...
...quickly. Operate the blower under control at great speed. !Warning! To reduce the risk of stumbling and loss of serious or fatal injury from breathing toxic fumes, never start or run the blower indoors or in trenches or other confined areas. BR 340, BR 340 L, BR 420, BR 420 C 9 When... working in poorly ventilated locations. Your blower produces poisonous exhaust fumes as soon as it on the ground when operating...
Instruction Manual
Page 11
...be used , such as a backpack and operated with times listed in yards, gardens, sports stadiums, parks, driveways and parking lots. The blower can work close to loosen debris before operation, especially the muffler, air intakes and air filters. Other applications are 9:00 a.m. Do not blow... clearing leaves, grass, paper, dust and light snow in local ordinances. It is carried as cleaning patios or porches. 10 BR 340, BR 340 L, BR 420, BR 420 C The blower may be aimed highly accurately and effectively. not early in trash receptacles. Comply with the right hand on weekends. : Fewer ...
...be used , such as a backpack and operated with times listed in yards, gardens, sports stadiums, parks, driveways and parking lots. The blower can work close to loosen debris before operation, especially the muffler, air intakes and air filters. Other applications are 9:00 a.m. Do not blow... clearing leaves, grass, paper, dust and light snow in local ordinances. It is carried as cleaning patios or porches. 10 BR 340, BR 340 L, BR 420, BR 420 C The blower may be aimed highly accurately and effectively. not early in trash receptacles. Comply with the right hand on weekends. : Fewer ...
Instruction Manual
Page 12
...never attempt to pick up dry material such as leaves, grass, small twigs and bits of the muffler or spark arrestor. Use only identical STIHL replacement parts for longer than a few days, always empty the fuel tank. Always stop the engine and make sure it and the ignition lead... is stopped before doing any part of paper. !Warning! The blower must not be checked with the unit. Never touch a hot muffler or burn will result. !Warning! Keep spark plug and wire connection tight and clean. BR 340, BR 340 L, BR 420, BR 420 C 11 Check to see that the risk of forest fires...
...never attempt to pick up dry material such as leaves, grass, small twigs and bits of the muffler or spark arrestor. Use only identical STIHL replacement parts for longer than a few days, always empty the fuel tank. Always stop the engine and make sure it and the ignition lead... is stopped before doing any part of paper. !Warning! The blower must not be checked with the unit. Never touch a hot muffler or burn will result. !Warning! Keep spark plug and wire connection tight and clean. BR 340, BR 340 L, BR 420, BR 420 C 11 Check to see that the risk of forest fires...
Instruction Manual
Page 13
...only with the retainer (5). the elbow must still turn. : Secure the throttle cable (4) to the pleated hose with the blower tube and nozzle properly mounted. : Push the blower tube (6) into the stub (2) as far as stop and leave it will go - The throttle cable is already connected...Insert the screw in that position. : Turn the control handle (10) counterclockwise to the horizontal position and tighten down the clamp screw (11). 12 BR 340, BR 340 L, BR 420, BR 420 C the stops on the underside of the arrow (clockwise) to lock. * see "Guide to Using this Manual" : Rotate the pleated hose ...
...only with the retainer (5). the elbow must still turn. : Secure the throttle cable (4) to the pleated hose with the blower tube and nozzle properly mounted. : Push the blower tube (6) into the stub (2) as far as stop and leave it will go - The throttle cable is already connected...Insert the screw in that position. : Turn the control handle (10) counterclockwise to the horizontal position and tighten down the clamp screw (11). 12 BR 340, BR 340 L, BR 420, BR 420 C the stops on the underside of the arrow (clockwise) to lock. * see "Guide to Using this Manual" : Rotate the pleated hose ...
Instruction Manual
Page 14
..." BR 340, BR 340 L, BR 420, BR 420 C 13 English / USA 10 10 7 11 9a 6 b 373BA039 KN 373BA002 KN 12 11 13 Mounting Blower Tube with Curved Nozzle* Operate the machine only with both blower tubes properly mounted. : Push the blower tube (6) into the pleated hose (7). : Push blower tube (12) onto blower tube... stop and leave it in that position. : Turn the control handle (10) counterclockwise to the horizontal position. : Rotate the complete blower tube assembly until the nozzle discharge opening points in the same direction as the control handle. : Tighten down the clamp screw (11...
..." BR 340, BR 340 L, BR 420, BR 420 C 13 English / USA 10 10 7 11 9a 6 b 373BA039 KN 373BA002 KN 12 11 13 Mounting Blower Tube with Curved Nozzle* Operate the machine only with both blower tubes properly mounted. : Push the blower tube (6) into the pleated hose (7). : Push blower tube (12) onto blower tube... stop and leave it in that position. : Turn the control handle (10) counterclockwise to the horizontal position. : Rotate the complete blower tube assembly until the nozzle discharge opening points in the same direction as the control handle. : Tighten down the clamp screw (11...
Instruction Manual
Page 29
... tank Fuel tank Carburetor Spark plug Cooling air intakes Spark arresting screen in muffler All accessible screws and nuts (not adjusting screws) Anti-vibration elements Blower air intake screen Safety label Visual inspection (conditon, leaks) x x Clean x Check operation x x Clean x Replace x Check x Replace x x Clean x Check idle setting x x Readjust idle x ... operating conditions only. If your daily working time is longer than normal or operating conditions are difficult (very dusty work be done by a STIHL servicing dealer 28 BR 340, BR 340 L, BR 420, BR 420 C
... tank Fuel tank Carburetor Spark plug Cooling air intakes Spark arresting screen in muffler All accessible screws and nuts (not adjusting screws) Anti-vibration elements Blower air intake screen Safety label Visual inspection (conditon, leaks) x x Clean x Check operation x x Clean x Replace x Check x Replace x x Clean x Check idle setting x x Readjust idle x ... operating conditions only. If your daily working time is longer than normal or operating conditions are difficult (very dusty work be done by a STIHL servicing dealer 28 BR 340, BR 340 L, BR 420, BR 420 C
Instruction Manual
Page 30
Parts and Controls 7 1 8 6 10 5 4 11 13 2 3 9 12 English / USA 1 Nozzle, straight* 2 Nozzle, curved* 3 Blower tube* 4 Blower tube 5 Control handle 6 Throttle trigger 7 Setting lever 8 Stop switch 9 Pleated hose 10 Harness 11 Back plate 12 Back padding 13 Air filter 373BA040 KN 14 ... 17 # 16 18 Choke knob 19 Starter grip 19 20 20 Fuel filler cap 21 Fuel tank # Serial number 14 21 373BA041 KN 373BA042 KN BR 340, BR 340 L, BR 420, BR 420 C * see "Guide to Using this Manual" 29
Parts and Controls 7 1 8 6 10 5 4 11 13 2 3 9 12 English / USA 1 Nozzle, straight* 2 Nozzle, curved* 3 Blower tube* 4 Blower tube 5 Control handle 6 Throttle trigger 7 Setting lever 8 Stop switch 9 Pleated hose 10 Harness 11 Back plate 12 Back padding 13 Air filter 373BA040 KN 14 ... 17 # 16 18 Choke knob 19 Starter grip 19 20 20 Fuel filler cap 21 Fuel tank # Serial number 14 21 373BA041 KN 373BA042 KN BR 340, BR 340 L, BR 420, BR 420 C * see "Guide to Using this Manual" 29
Instruction Manual
Page 31
English / USA Definitions 1. Blower Tube. Blower Tube. Control Handle. Setting Lever. Stop Switch. Attenuates exhaust noises and diverts exhaust gases away from operator. Choke Knob. Directs spray or airstream. 5. Pleated Hose.... protect the back of the pull starter, which is designed to the operators back. 15. For tuning carburetor. 18. For fuel and oil mixture. 30 BR 340, BR 340 L, BR 420, BR 420 C Nozzle, Straight Aims and widens the spray or airstream. 2. Handle on the flexible hose to various positions. 8. Throttle Trigger. Covers the air ...
English / USA Definitions 1. Blower Tube. Blower Tube. Control Handle. Setting Lever. Stop Switch. Attenuates exhaust noises and diverts exhaust gases away from operator. Choke Knob. Directs spray or airstream. 5. Pleated Hose.... protect the back of the pull starter, which is designed to the operators back. 15. For tuning carburetor. 18. For fuel and oil mixture. 30 BR 340, BR 340 L, BR 420, BR 420 C Nozzle, Straight Aims and widens the spray or airstream. 2. Handle on the flexible hose to various positions. 8. Throttle Trigger. Covers the air ...