Instruction Manual
Page 2
... and Controls 29 Specifications 31 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,...STIHL blower, it is important that you do not understand any other power tool to Using this Manual 2 Safety Precautions 3 Assembling the Blower 12 Fuel 14 Fueling 15 Information Before You Start .......... 16 Starting / Stopping the Engine ........ 16 Operating Instructions 19 Cleaning the Air Filter...
... and Controls 29 Specifications 31 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,...STIHL blower, it is important that you do not understand any other power tool to Using this Manual 2 Safety Precautions 3 Assembling the Blower 12 Fuel 14 Fueling 15 Information Before You Start .......... 16 Starting / Stopping the Engine ........ 16 Operating Instructions 19 Cleaning the Air Filter...
Instruction Manual
Page 11
... are blowing out pipes, drains, gutters and your carport. to loosen debris before operation, especially the muffler, air intakes and air filters. Conserve water by using blowers, CLEAN UP. Other applications are 9:00 a.m. Blow debris safely away. : ...airborne debris and pollution: : In dusty conditions, slightly dampen surfaces. : Use the full blower nozzle extension so the air stream can be used , such as a backpack and operated with times listed in trash receptacles. on weekends. : ... paths. It is carried as cleaning patios or porches. 10 BR 340, BR 340 L, BR 420, BR 420 C
... are blowing out pipes, drains, gutters and your carport. to loosen debris before operation, especially the muffler, air intakes and air filters. Conserve water by using blowers, CLEAN UP. Other applications are 9:00 a.m. Blow debris safely away. : ...airborne debris and pollution: : In dusty conditions, slightly dampen surfaces. : Use the full blower nozzle extension so the air stream can be used , such as a backpack and operated with times listed in trash receptacles. on weekends. : ... paths. It is carried as cleaning patios or porches. 10 BR 340, BR 340 L, BR 420, BR 420 C
Instruction Manual
Page 20
...) from the cover and inspect it - Note: Always install a new prefilter when you change the main filter. if it out on the palm of your hand or blow out with compressed air. : Always replace a damaged prefilter. BR 340, BR 340 L, BR 420, BR 420 C 19 During operation After a long period of full-throttle operation, allow engine to g : Release...
...) from the cover and inspect it - Note: Always install a new prefilter when you change the main filter. if it out on the palm of your hand or blow out with compressed air. : Always replace a damaged prefilter. BR 340, BR 340 L, BR 420, BR 420 C 19 During operation After a long period of full-throttle operation, allow engine to g : Release...
Instruction Manual
Page 21
.... 20 BR 340, BR 340 L, BR 420, BR 420 C carburation, ignition, timing and valve or port timing) without the addition of the fundamental engine parameters and components (e.g. Exhaust emissions are controlled by the design of any major hardware. With this carburetor it down firmly. English / USA Motor Management Adjusting the Carburetor : Clean the filter cover and filter chamber...
.... 20 BR 340, BR 340 L, BR 420, BR 420 C carburation, ignition, timing and valve or port timing) without the addition of the fundamental engine parameters and components (e.g. Exhaust emissions are controlled by the design of any major hardware. With this carburetor it down firmly. English / USA Motor Management Adjusting the Carburetor : Clean the filter cover and filter chamber...
Instruction Manual
Page 23
...essential to minimize harmful exhaust emissions and ensure a long catalyst service life. Wrong fuel mix (too much oil in fuel mix. : Dirty air filter. : Unfavorable running conditions (mostly at part throttle etc.) affect the condition of 50:1 (see "Specifications". : Use only resistor type spark...the Spark Plug Units with unleaded gasoline and STIHL two cycle engine oil or equivalent quality two cycle engine oils in the exhaust gas. These factors cause deposits to form on power, difficult to Using this Manual" 22 BR 340, BR 340 L, BR 420, BR 420 C see chapter "Fuel"). see ...
...essential to minimize harmful exhaust emissions and ensure a long catalyst service life. Wrong fuel mix (too much oil in fuel mix. : Dirty air filter. : Unfavorable running conditions (mostly at part throttle etc.) affect the condition of 50:1 (see "Specifications". : Use only resistor type spark...the Spark Plug Units with unleaded gasoline and STIHL two cycle engine oil or equivalent quality two cycle engine oils in the exhaust gas. These factors cause deposits to form on power, difficult to Using this Manual" 22 BR 340, BR 340 L, BR 420, BR 420 C see chapter "Fuel"). see ...
Instruction Manual
Page 28
BR 340, BR 340 L, BR 420, BR 420 C English / USA 27 this helps prevent carburetor diaphragms sticking together. : Thoroughly clean the machine - pay special attention to the cylinder fins and air filter. : Store the machine in a dry, high or locked location - out of the reach of remaining fuel and cleaning solution properly in accordance with local environmental ...
BR 340, BR 340 L, BR 420, BR 420 C English / USA 27 this helps prevent carburetor diaphragms sticking together. : Thoroughly clean the machine - pay special attention to the cylinder fins and air filter. : Store the machine in a dry, high or locked location - out of the reach of remaining fuel and cleaning solution properly in accordance with local environmental ...
Instruction Manual
Page 29
... work be done by servicing dealer1) Check x x Clean Replace x x x x 1) STIHL recommends that this work area etc.), shorten the specified intervals accordingly. Complete machine Control handle Air filter Pick up body in fuel tank Fuel tank Carburetor Spark plug Cooling air intakes Spark arresting screen in muffler All accessible screws and nuts (not... before starting work after finishing work or daily after about 100 operating hours Clean x Check x Clean or replace x Tighten x Check x Have replaced by a STIHL servicing dealer 28 BR 340, BR 340 L, BR 420, BR 420 C
... work be done by servicing dealer1) Check x x Clean Replace x x x x 1) STIHL recommends that this work area etc.), shorten the specified intervals accordingly. Complete machine Control handle Air filter Pick up body in fuel tank Fuel tank Carburetor Spark plug Cooling air intakes Spark arresting screen in muffler All accessible screws and nuts (not... before starting work after finishing work or daily after about 100 operating hours Clean x Check x Clean or replace x Tighten x Check x Have replaced by a STIHL servicing dealer 28 BR 340, BR 340 L, BR 420, BR 420 C
Instruction Manual
Page 30
...* 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 Antivibration elements 15 Spark plug boot 16 Muffler (with spark arresting 15 screen)* 17 Carburetor adjusting screws 14 18 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
...* 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 Antivibration elements 15 Spark plug boot 16 Muffler (with spark arresting 15 screen)* 17 Carburetor adjusting screws 14 18 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
... Screws. Starter Grip. Control Handle. Air Filter Housing. Sets the trottle to the ignition wire. 16. For spraying, dusting or spreading in the required direction. 6. Spark Plug Boot. The grip of vibrations created by enriching mixture. 19. For fuel and oil mixture. 30 BR 340, BR 340 L, BR 420, BR 420 C Nozzle, Straight Aims and ... the risk of the engine. 7. Stop Switch. For carrying the unit. 11. Helps protect the back of the user. 12. Covers the air filter element. 14. Antivibration Elements. Muffler (with spark arresting screen). Choke Knob.
... Screws. Starter Grip. Control Handle. Air Filter Housing. Sets the trottle to the ignition wire. 16. For spraying, dusting or spreading in the required direction. 6. Spark Plug Boot. The grip of vibrations created by enriching mixture. 19. For fuel and oil mixture. 30 BR 340, BR 340 L, BR 420, BR 420 C Nozzle, Straight Aims and ... the risk of the engine. 7. Stop Switch. For carrying the unit. 11. Helps protect the back of the user. 12. Covers the air filter element. 14. Antivibration Elements. Muffler (with spark arresting screen). Choke Knob.
Instruction Manual
Page 32
... Air filter: Paper element Fuel tank capacity: 50 fl.oz. (1.5 l) Fuel mix: see chapter "Fuel" Rewind Starter Starter rope: 0.14 in (34 mm) Idle speed: 3,100 rpm Ignition System Type: Electronic magneto ignition Spark plug (suppressed): Bosch WSR 6 F or NGK BPMR 7 A; x 37.8 in (3.5 mm dia. x 960 mm) 1113 195 8200 Model BR 340 BR 340L BR...
... Air filter: Paper element Fuel tank capacity: 50 fl.oz. (1.5 l) Fuel mix: see chapter "Fuel" Rewind Starter Starter rope: 0.14 in (34 mm) Idle speed: 3,100 rpm Ignition System Type: Electronic magneto ignition Spark plug (suppressed): Bosch WSR 6 F or NGK BPMR 7 A; x 37.8 in (3.5 mm dia. x 960 mm) 1113 195 8200 Model BR 340 BR 340L BR...
Instruction Manual
Page 35
... regarding quality and mixing ratio of parts and other engine components caused by STIHL Incorporated at and after the first scheduled replacement point. 34 BR 340, BR 340 L, BR 420, BR 420 C Limitations This Emission Control Systems Warranty shall not cover any warranty ...STIHL Incorporated shall remedy warranty defects at any authorized STIHL servicing dealer or warranty station. If any authorized STIHL servicing dealer and present the signed warranty card. Deviations from this manual are : Carburetor Choke (Cold start enrichment system) Intake manifold Air filter ...
... regarding quality and mixing ratio of parts and other engine components caused by STIHL Incorporated at and after the first scheduled replacement point. 34 BR 340, BR 340 L, BR 420, BR 420 C Limitations This Emission Control Systems Warranty shall not cover any warranty ...STIHL Incorporated shall remedy warranty defects at any authorized STIHL servicing dealer or warranty station. If any authorized STIHL servicing dealer and present the signed warranty card. Deviations from this manual are : Carburetor Choke (Cold start enrichment system) Intake manifold Air filter ...