Instruction Manual
Page 2
... the Machine 26 Maintenance Chart 27 Parts and Controls 28 Specifications 30 Special Accessories 31 Maintenance and Repairs 31 STIHL Incorporated Federal and California Emission Control Warranty Statement 32 Trademarks 34 STIHl BR 420 English / USA Allow only persons who understand this Manual...fatal injury. To receive maximum performance and satisfaction from those described in Brazil Printed on page 3, before using your STIHL dealer for your blower. STIHL's philosophy is a high-speed tool, some special safety precautions must be recycled. Because a blower is to -...
... the Machine 26 Maintenance Chart 27 Parts and Controls 28 Specifications 30 Special Accessories 31 Maintenance and Repairs 31 STIHL Incorporated Federal and California Emission Control Warranty Statement 32 Trademarks 34 STIHl BR 420 English / USA Allow only persons who understand this Manual...fatal injury. To receive maximum performance and satisfaction from those described in Brazil Printed on page 3, before using your STIHL dealer for your blower. STIHL's philosophy is a high-speed tool, some special safety precautions must be recycled. Because a blower is to -...
Instruction Manual
Page 6
... starting work , always inspect the rubber buffers which comply with the specific STIHL blower models are authorized. Failure of fuel leakage. Only attachments supplied by STIHL or expressly approved by your hearing. Fuel This STIHL unit uses an oil-gasoline mixture for use may damage your... of the blower parts see the chapter on "Parts and Controls"! !Warning! If the buffers are useable for the STIHL blower, their hearing checked regulary. BR 420 5 Fellow workers must . Wear sound barriers (ear plugs or ear mufflers) to serious injury from increased vibrations or from...
... starting work , always inspect the rubber buffers which comply with the specific STIHL blower models are authorized. Failure of fuel leakage. Only attachments supplied by STIHL or expressly approved by your hearing. Fuel This STIHL unit uses an oil-gasoline mixture for use may damage your... of the blower parts see the chapter on "Parts and Controls"! !Warning! If the buffers are useable for the STIHL blower, their hearing checked regulary. BR 420 5 Fellow workers must . Wear sound barriers (ear plugs or ear mufflers) to serious injury from increased vibrations or from...
Instruction Manual
Page 8
...the operation immediately if you pull the starter grip, don`t wrap the starter rope around your STIHL dealer for damage (cracks, nicks, chipping). Failure to follow this brief period, and your ... section of injury from thrown objects, insure that bystanders are at idle speed during use. BR 420 7 You should be started and operated without assistance. To reduce the risk of your assistant...fanwheel and fan housing. Make sure the controls and safety devices are approached. For specific starting it is loose, sparks may result in placing the unit on firm ground or...
...the operation immediately if you pull the starter grip, don`t wrap the starter rope around your STIHL dealer for damage (cracks, nicks, chipping). Failure to follow this brief period, and your ... section of injury from thrown objects, insure that bystanders are at idle speed during use. BR 420 7 You should be started and operated without assistance. To reduce the risk of your assistant...fanwheel and fan housing. Make sure the controls and safety devices are approached. For specific starting it is loose, sparks may result in placing the unit on firm ground or...
Instruction Manual
Page 9
...do not continue work with a catalytic converter cools down less rapidly than conventional mufflers, always set your muffler maintained by a STIHL servicing dealer. 8 BR 420 To reduce the risk of performance and you suspect a clogged screen, have your backpack blower down sitting on a catalytic converter...and repaired by a chemical process in heat radiation or sparks, thereby increasing the risk of fire and burn injuries, the following specific safety precautions must be damaged and cause an increase in the muffler. Due to the heat from any combustible substances. !Warning...
...do not continue work with a catalytic converter cools down less rapidly than conventional mufflers, always set your muffler maintained by a STIHL servicing dealer. 8 BR 420 To reduce the risk of performance and you suspect a clogged screen, have your backpack blower down sitting on a catalytic converter...and repaired by a chemical process in heat radiation or sparks, thereby increasing the risk of fire and burn injuries, the following specific safety precautions must be damaged and cause an increase in the muffler. Due to the heat from any combustible substances. !Warning...
Instruction Manual
Page 23
...on the insulator nose which have caused fouling of the approved range. see "Guide to Using this Manual" 22 BR 420 operating at idling speed, first check the spark plug. : Remove spark plug - see "Specifications". : Use only resistor type spark plugs of spark plug: : Too much engine oil in the gasoline), ... harmful exhaust emissions and ensure a long catalyst service life. English / USA Catalytic Converter* Checking the Spark Plug Units with unleaded gasoline and STIHL two cycle engine oil or equivalent quality two cycle engine oils in a mix ratio of 50:1 (see chapter "Fuel").
...on the insulator nose which have caused fouling of the approved range. see "Guide to Using this Manual" 22 BR 420 operating at idling speed, first check the spark plug. : Remove spark plug - see "Specifications". : Use only resistor type spark plugs of spark plug: : Too much engine oil in the gasoline), ... harmful exhaust emissions and ensure a long catalyst service life. English / USA Catalytic Converter* Checking the Spark Plug Units with unleaded gasoline and STIHL two cycle engine oil or equivalent quality two cycle engine oils in a mix ratio of 50:1 (see chapter "Fuel").
Instruction Manual
Page 31
... two-stroke engine Displacement: 3.45 ci (56.5 cm3) Bore: 1.81 in (46 mm) Stroke: 1.34 in lbs (kg) BR 420 BR 420 Cat 20.1 (9.1) 20.5 (9.3) 30 BR 420 Category A = 300 hours, B = 125 hours, C = 50 hours CARB: The Emission Compliance Period used on the Emissions Compliance ...= 50 hours Engine BR 420 and BR 420 with Nozzle in MPH (m/s) BR 420 BR 420 Cat 174 (77) 172 (78) Weight in (34 mm) Idle speed: 3,100 rpm Ignition System Type: Electronic magneto ignition Spark plug (resistor type): Bosch WSR 6 F or NGK BPMR 7 A; English / USA Specifications EPA: The Emission ...
... two-stroke engine Displacement: 3.45 ci (56.5 cm3) Bore: 1.81 in (46 mm) Stroke: 1.34 in lbs (kg) BR 420 BR 420 Cat 20.1 (9.1) 20.5 (9.3) 30 BR 420 Category A = 300 hours, B = 125 hours, C = 50 hours CARB: The Emission Compliance Period used on the Emissions Compliance ...= 50 hours Engine BR 420 and BR 420 with Nozzle in MPH (m/s) BR 420 BR 420 Cat 174 (77) 172 (78) Weight in (34 mm) Idle speed: 3,100 rpm Ignition System Type: Electronic magneto ignition Spark plug (resistor type): Bosch WSR 6 F or NGK BPMR 7 A; English / USA Specifications EPA: The Emission ...
Instruction Manual
Page 34
...equivalent replacement part may require shorter maintenance intervals. Maintenance Requirements The maintenance instructions in writing by STIHL Incorporated, and : replacement of a warranted part still under warranty. BR 420 33 Any warranted part which is not scheduled for replacement as required maintenance, or which ... for a component and the machine is scheduled for replacement as the owner, shall not be provided without charge to STIHL Incorporated specifications that part. English / USA Warranty Period The warranty periods will begin on the date the utility equipment engine is ...
...equivalent replacement part may require shorter maintenance intervals. Maintenance Requirements The maintenance instructions in writing by STIHL Incorporated, and : replacement of a warranted part still under warranty. BR 420 33 Any warranted part which is not scheduled for replacement as required maintenance, or which ... for a component and the machine is scheduled for replacement as the owner, shall not be provided without charge to STIHL Incorporated specifications that part. English / USA Warranty Period The warranty periods will begin on the date the utility equipment engine is ...