Instruction Manual
Page 2
... Storing 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. !Warning! To receive maximum performance and satisfaction from time-to...
... Storing 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. !Warning! To receive maximum performance and satisfaction from time-to...
Instruction Manual
Page 3
... appearance of the situation and result in this manual, please contact your STIHL dealer for using the machine, but may improve the operator's understanding of your machine differ from... time to time. Engineering improvements STIHL's philosophy is not essential for assistance. In addition to the operating instructions,...are shown and explained in the manual may be available as special accessories from your STIHL dealer. Such paragraphs are supported by illustrations. Such components may be marked in this...
... appearance of the situation and result in this manual, please contact your STIHL dealer for using the machine, but may improve the operator's understanding of your machine differ from... time to time. Engineering improvements STIHL's philosophy is not essential for assistance. In addition to the operating instructions,...are shown and explained in the manual may be available as special accessories from your STIHL dealer. Such paragraphs are supported by illustrations. Such components may be marked in this...
Instruction Manual
Page 4
... understands the information contained in use blowers on a regular or sustained basis. Working with an antivibration system (AV). Your STIHL blower is equipped with any blower may interfere with pacemaker should consult their physician and the pacemaker manufacturer before operating the machine... the following safety precautions. !Warning! if you are fatigued. An AV system is important that might impair vision, dexterity or judgment. BR 420 3 See the appropriate section of any condition that you have any substance (drugs, alcohol, etc.) which might be in loss of ...
... understands the information contained in use blowers on a regular or sustained basis. Working with an antivibration system (AV). Your STIHL blower is equipped with any blower may interfere with pacemaker should consult their physician and the pacemaker manufacturer before operating the machine... the following safety precautions. !Warning! if you are fatigued. An AV system is important that might impair vision, dexterity or judgment. BR 420 3 See the appropriate section of any condition that you have any substance (drugs, alcohol, etc.) which might be in loss of ...
Instruction Manual
Page 6
...Before starting work , always inspect the rubber buffers which comply with the specific STIHL blower models are authorized. BR 420 5 Never modify a blower in a vehicle, properly secure it down. Only attachments supplied by STIHL or expressly approved by your hearing. Although certain unauthorized attachment are torn or ...For illustrations and definitions of fuel leakage. Failure of your unit in any way. If the buffers are useable for the STIHL blower, their hearing checked regulary. Proper eye protection is directed away from fire as the result of the blower parts see...
...Before starting work , always inspect the rubber buffers which comply with the specific STIHL blower models are authorized. BR 420 5 Never modify a blower in a vehicle, properly secure it down. Only attachments supplied by STIHL or expressly approved by your hearing. Although certain unauthorized attachment are torn or ...For illustrations and definitions of fuel leakage. Failure of your unit in any way. If the buffers are useable for the STIHL blower, their hearing checked regulary. Proper eye protection is directed away from fire as the result of the blower parts see...
Instruction Manual
Page 8
... loose, sparks may result in the area of fanwheel and fan housing. For specific starting it is found, stop using the unit and contact your STIHL dealer for damage (cracks, nicks, chipping). Failure to follow this brief period, and your assistant should not stand in injury to rewind properly. Make sure.... Place the machine on your owner`s manual. In order to reduce the risk of injury to $ : Tightness of another person may damage the starter mechanism. BR 420 7
... loose, sparks may result in the area of fanwheel and fan housing. For specific starting it is found, stop using the unit and contact your STIHL dealer for damage (cracks, nicks, chipping). Failure to follow this brief period, and your assistant should not stand in injury to rewind properly. Make sure.... Place the machine on your owner`s manual. In order to reduce the risk of injury to $ : Tightness of another person may damage the starter mechanism. BR 420 7
Instruction Manual
Page 9
... with a damaged or improperly mounted cylinder housing or a damaged/ deformed muffler shell. Have your muffler serviced and repaired by a STIHL servicing dealer. 8 BR 420 To reduce the risk of a felled tree) away from the catalytic reaction, this process, the muffler does not cool down before... refueling your STIHL servicing dealer only. !Warning! An improperly mounted or damaged cylinder housing or a damaged/ deformed muffler shell may...
... with a damaged or improperly mounted cylinder housing or a damaged/ deformed muffler shell. Have your muffler serviced and repaired by a STIHL servicing dealer. 8 BR 420 To reduce the risk of a felled tree) away from the catalytic reaction, this process, the muffler does not cool down before... refueling your STIHL servicing dealer only. !Warning! An improperly mounted or damaged cylinder housing or a damaged/ deformed muffler shell may...
Instruction Manual
Page 12
...burn will result. !Warning! Store blower in a dry, high or locked location and out of reach of the muffler or spark arrestor. BR 420 11 Always stop the engine and make sure it and the ignition lead are badly pitted. Have such work performed at least every 50 operating...burning substances (e.g. Check fuel filler cap for a component which has not been serviced or maintained properly or if nonapproved replacement parts were used, STIHL may cause loss of this manual. Tighten all nuts, bolts and screws except the carburetor adjustment screws after each use. !Warning! Remember ...
...burn will result. !Warning! Store blower in a dry, high or locked location and out of reach of the muffler or spark arrestor. BR 420 11 Always stop the engine and make sure it and the ignition lead are badly pitted. Have such work performed at least every 50 operating...burning substances (e.g. Check fuel filler cap for a component which has not been serviced or maintained properly or if nonapproved replacement parts were used, STIHL may cause loss of this manual. Tighten all nuts, bolts and screws except the carburetor adjustment screws after each use. !Warning! Remember ...
Instruction Manual
Page 15
..., oil seals, fuel lines, etc.), but magnesium castings and catalytic converters as necessary. 14 BR 420 Avoid direct contact with a lower octane rating may increase engine temperatures. Use only STIHL two-stroke engine oil or equivalent high-quality two-stroke engine oils that the backplate is held...kept tightly closed in air cooled two-cycle engines. This could cause running problems or even damage the engine. For this reason STIHL recommends that state they are sitting in STlHL engines. Do not fill fuel canisters that are for use only nationally recognized high...
..., oil seals, fuel lines, etc.), but magnesium castings and catalytic converters as necessary. 14 BR 420 Avoid direct contact with a lower octane rating may increase engine temperatures. Use only STIHL two-stroke engine oil or equivalent high-quality two-stroke engine oils that the backplate is held...kept tightly closed in air cooled two-cycle engines. This could cause running problems or even damage the engine. For this reason STIHL recommends that state they are sitting in STlHL engines. Do not fill fuel canisters that are for use only nationally recognized high...
Instruction Manual
Page 16
... canister before fueling your machine for a few days work, not to exceed 3 months of empty mixing-oil canisters only at authorized disposal locations. Gasoline Oil (STIHL 50:1 or equivalent high-quality oils) US gal. 1 2 1/2 5 US fl.oz 2.6 6.4 12.8 Dispose of storage. After fueling, tighten fuel cap as ...filler cap and the area around it vigorously by hand. 373BA030 KN 373BA007 KN Change the fuel pick up in approved fuel-canisters only. BR 420 15 Before storing your machine. Store in the tank to allow any pressure build-up body every year. When mixing, pour oil into ...
... canister before fueling your machine for a few days work, not to exceed 3 months of empty mixing-oil canisters only at authorized disposal locations. Gasoline Oil (STIHL 50:1 or equivalent high-quality oils) US gal. 1 2 1/2 5 US fl.oz 2.6 6.4 12.8 Dispose of storage. After fueling, tighten fuel cap as ...filler cap and the area around it vigorously by hand. 373BA030 KN 373BA007 KN Change the fuel pick up in approved fuel-canisters only. BR 420 15 Before storing your machine. Store in the tank to allow any pressure build-up body every year. When mixing, pour oil into ...
Instruction Manual
Page 23
... running conditions (mostly at part throttle etc.) affect the condition of the approved range. Rectify problems which may only be operated with unleaded gasoline and STIHL two cycle engine oil or equivalent quality two cycle engine oils in a mix ratio of 50:1 (see "Specifications". : Use only resistor type spark plugs of... conditions, e.g. see "Guide to start or runs poorly at part load. These factors cause deposits to form on power, difficult to Using this Manual" 22 BR 420
... running conditions (mostly at part throttle etc.) affect the condition of the approved range. Rectify problems which may only be operated with unleaded gasoline and STIHL two cycle engine oil or equivalent quality two cycle engine oils in a mix ratio of 50:1 (see "Specifications". : Use only resistor type spark plugs of... conditions, e.g. see "Guide to start or runs poorly at part load. These factors cause deposits to form on power, difficult to Using this Manual" 22 BR 420
Instruction Manual
Page 24
... clip (1) together and then lift the clip away. : Pull the spark arresting screen (2) out of fire and burn injury, use only spark plugs authorized by STIHL. BR 420 23 Always press spark plug boot (2) snugly onto spark plug terminal (1) of the proper size. (Note: If terminal has detachable SAE adapter nut, it must...
... clip (1) together and then lift the clip away. : Pull the spark arresting screen (2) out of fire and burn injury, use only spark plugs authorized by STIHL. BR 420 23 Always press spark plug boot (2) snugly onto spark plug terminal (1) of the proper size. (Note: If terminal has detachable SAE adapter nut, it must...
Instruction Manual
Page 28
... that this 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 BR 420 27 Complete machine Control handle Air filter Pick up body in fuel tank Fuel tank Carburetor Spark plug Cooling air intakes Spark arresting screen in ...
... that this 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 BR 420 27 Complete machine Control handle Air filter Pick up body in fuel tank Fuel tank Carburetor Spark plug Cooling air intakes Spark arresting screen in ...
Instruction Manual
Page 32
...regarding special accessories that may be performed only by authorized STIHL service shops. Warranty claims following repairs can be accepted only if the repair has been performed by the STlHL parts symbol (. English / USA BR 420 31 Users of this unit should carry out only the... maintenance operations described in some cases, by an authorized STIHL servicing dealer using original STIHL replacement parts. Original STlHL parts can be identified by the STlHL...
...regarding special accessories that may be performed only by authorized STIHL service shops. Warranty claims following repairs can be accepted only if the repair has been performed by the STlHL parts symbol (. English / USA BR 420 31 Users of this unit should carry out only the... maintenance operations described in some cases, by an authorized STIHL servicing dealer using original STIHL replacement parts. Original STlHL parts can be identified by the STlHL...
Instruction Manual
Page 33
...engine use from defects in non-warranty maintenance or repairs, and shall not reduce the warranty obligations of two years. 32 BR 420 Box 2015, Virginia Beach, VA 23450-2015. EPA standards for presenting your engine is equivalent in materials and workmanship which cause...other states, new 1997 and later model year small off -road equipment engine. In other emission related assemblies. English / USA STIHL Incorporated Federal and California Emission Control Warranty Statement Your Warranty Rights and Obligations The U.S. The equipment engine must be free from the...
...engine use from defects in non-warranty maintenance or repairs, and shall not reduce the warranty obligations of two years. 32 BR 420 Box 2015, Virginia Beach, VA 23450-2015. EPA standards for presenting your engine is equivalent in materials and workmanship which cause...other states, new 1997 and later model year small off -road equipment engine. In other emission related assemblies. English / USA STIHL Incorporated Federal and California Emission Control Warranty Statement Your Warranty Rights and Obligations The U.S. The equipment engine must be free from the...
Instruction Manual
Page 34
... maintenance instructions in writing by STIHL Incorporated, and : replacement of...STIHL Incorporated will charge you for Warranty Service Bring the product to STIHL. Any such work will be performed either at STIHL Incorporated or at no cost to STIHL...be performed at any authorized STIHL servicing dealer or warranty station...STIHL Incorporated at any independent test laboratory. Warranty Work STIHL Incorporated shall remedy warranty defects at an authorized STIHL...card to any authorized STIHL servicing dealer and present...shorter maintenance intervals. STIHL Incorporated is tested as...
... maintenance instructions in writing by STIHL Incorporated, and : replacement of...STIHL Incorporated will charge you for Warranty Service Bring the product to STIHL. Any such work will be performed either at STIHL Incorporated or at no cost to STIHL...be performed at any authorized STIHL servicing dealer or warranty station...STIHL Incorporated at any independent test laboratory. Warranty Work STIHL Incorporated shall remedy warranty defects at an authorized STIHL...card to any authorized STIHL servicing dealer and present...shorter maintenance intervals. STIHL Incorporated is tested as...
Instruction Manual
Page 35
... express written consent of trademarks is strictly prohibited. 34 BR 420 Registration #2,821,860) 4-MIX® AUTOCUT® EASYSTART® OILOMATIC® STIHL Cutquik® STIHL DUROMATIC® STIHL Farm Boss® STIHL Quickstop® STIHL ROLLOMATIC® STIHL WOOD BOSS® TIMBERSPORTS® YARD BOSS® Some of STIHL's Common Law Trademarks BioPlus™ Easy2Start™ EasySpool™...
... express written consent of trademarks is strictly prohibited. 34 BR 420 Registration #2,821,860) 4-MIX® AUTOCUT® EASYSTART® OILOMATIC® STIHL Cutquik® STIHL DUROMATIC® STIHL Farm Boss® STIHL Quickstop® STIHL ROLLOMATIC® STIHL WOOD BOSS® TIMBERSPORTS® YARD BOSS® Some of STIHL's Common Law Trademarks BioPlus™ Easy2Start™ EasySpool™...