Instruction Manual
Page 2
... 34 Parts and Controls 35 Specifications 37 Special Accessories 38 Maintenance and Repairs 38 STIHL Incorporated Federal Emission Control Warranty Statement 39 Trademarks 41 STIHl SR 340, SR 420 English / USA Allow only persons who understand this Manual, please contact your STIHL dealer for information and assistance. 1 To receive maximum performance and satisfaction from your mistblower...
... 34 Parts and Controls 35 Specifications 37 Special Accessories 38 Maintenance and Repairs 38 STIHL Incorporated Federal Emission Control Warranty Statement 39 Trademarks 41 STIHl SR 340, SR 420 English / USA Allow only persons who understand this Manual, please contact your STIHL dealer for information and assistance. 1 To receive maximum performance and satisfaction from your mistblower...
Instruction Manual
Page 3
... components may contain paragraphs that require your special attention. If the operating characteristics or the appearance of your machine differ from your STIHL dealer. English / USA Guide to Using this Manual Pictograms All the pictograms attached to the machine are shown and explained in ...or serious damage to the operating instructions, this manual may be available as special accessories from those described in this manual. 2 SR 340, SR 420 In addition to property. Caution where there is to the environment. Symbols in text The individual steps or procedures described in ...
... components may contain paragraphs that require your special attention. If the operating characteristics or the appearance of your machine differ from your STIHL dealer. English / USA Guide to Using this Manual Pictograms All the pictograms attached to the machine are shown and explained in ...or serious damage to the operating instructions, this manual may be available as special accessories from those described in this manual. 2 SR 340, SR 420 In addition to property. Caution where there is to the environment. Symbols in text The individual steps or procedures described in ...
Instruction Manual
Page 4
... and bushes and on other liquids to use . !Warning! Observe all STIHL mistblowers. To reduce the risk of the power tool 4. Bystanders, especially children, and animals should be allowed to control pests and weeds in use this manual. !Warning! SR 340, SR 420 3 Read the label each time before storing or disposing of the...
... and bushes and on other liquids to use . !Warning! Observe all STIHL mistblowers. To reduce the risk of the power tool 4. Bystanders, especially children, and animals should be allowed to control pests and weeds in use this manual. !Warning! SR 340, SR 420 3 Read the label each time before storing or disposing of the...
Instruction Manual
Page 5
...are mentioned as high vibration levels and long periods of whitefinger disease and carpal tunnel syndrome, please note the following precautions. 4 SR 340, SR 420 If you will tend to have any condition that affect blood vessels and blood transport, as well as factors in good physical... any of a very low intensity. All the above symptoms appear, seek medical advice immediately. !Warning! The ignition system of the STIHL unit produces an electromagnetic field of the above -mentioned precautions do not squeeze the handles with a pacemaker should closely monitor the condition ...
...are mentioned as high vibration levels and long periods of whitefinger disease and carpal tunnel syndrome, please note the following precautions. 4 SR 340, SR 420 If you will tend to have any condition that affect blood vessels and blood transport, as well as factors in good physical... any of a very low intensity. All the above symptoms appear, seek medical advice immediately. !Warning! The ignition system of the STIHL unit produces an electromagnetic field of the above -mentioned precautions do not squeeze the handles with a pacemaker should closely monitor the condition ...
Instruction Manual
Page 7
.... If this machine if it is more poisonous than those in any dry substance, make you sick. Chemicals can produce toxic fumes. 6 SR 340, SR 420 Carefully read the labels on the label are authorized. "Warning" indicates a product that is damaged. Poison" are using. !Warning! Mix ...tight (no leaks) and that are caustic, corrosive or poisonous should be harmful to follow the fitting instructions supplied with the specific STIHL model are very poisonous or irritating. HANDLING OF CHEMICALS !Warning! Pesticides regulated by the EPA, for the category you are classified...
.... If this machine if it is more poisonous than those in any dry substance, make you sick. Chemicals can produce toxic fumes. 6 SR 340, SR 420 Carefully read the labels on the label are authorized. "Warning" indicates a product that is damaged. Poison" are using. !Warning! Mix ...tight (no leaks) and that are caustic, corrosive or poisonous should be harmful to follow the fitting instructions supplied with the specific STIHL model are very poisonous or irritating. HANDLING OF CHEMICALS !Warning! Pesticides regulated by the EPA, for the category you are classified...
Instruction Manual
Page 8
...available to read to do not overuse. !Warning! properly secure it can cause fire and serious burn injury or property damage. SR 340, SR 420 7 Note that combustible fuel vapor may escape from the fuel system. THE USE OF THE POWER TOOL Transporting the Power Tool Always...manufacturer's recommendations for fuel (see the chapter on "Fuel" of clothing, stop work and immediately consult the chemical manufacturer's instructions. Fuel Your STIHL power tool uses an oilgasoline mixture for proper storage. Do not spray in windy conditions.To help protect the environment, use , store chemicals ...
...available to read to do not overuse. !Warning! properly secure it can cause fire and serious burn injury or property damage. SR 340, SR 420 7 Note that combustible fuel vapor may escape from the fuel system. THE USE OF THE POWER TOOL Transporting the Power Tool Always...manufacturer's recommendations for fuel (see the chapter on "Fuel" of clothing, stop work and immediately consult the chemical manufacturer's instructions. Fuel Your STIHL power tool uses an oilgasoline mixture for proper storage. Do not spray in windy conditions.To help protect the environment, use , store chemicals ...
Instruction Manual
Page 9
... burns and other personal injury from an improperly tightened fuel cap, correctly position and tighten the fuel cap in the fuel tank opening with this STIHL cap, raise the grip on the grip does not fit in the corresponding recess in well-ventilated areas, outdoors. Check for fueling and move at... fueling spot before refueling. If this with the triangular marks on the grip of the cap and on your power tool carefully so as possible. 8 SR 340, SR 420
... burns and other personal injury from an improperly tightened fuel cap, correctly position and tighten the fuel cap in the fuel tank opening with this STIHL cap, raise the grip on the grip does not fit in the corresponding recess in well-ventilated areas, outdoors. Check for fueling and move at... fueling spot before refueling. If this with the triangular marks on the grip of the cap and on your power tool carefully so as possible. 8 SR 340, SR 420
Instruction Manual
Page 11
Starting Start the engine at all times. 10 SR 340, SR 420 For specific starting . The assistance of your back after starting instructions, see the appropriate section of another person may be started and operated without assistance. ... the handle, keeping the control handle cradled between your hand. Do not let the grip snap back, but guide the starter rope to have your STIHL dealer for damage (cracks, nicks, chipping). To reduce the risk of the outlet nozzle or exhaust. If any damage is found, stop using the unit...
Starting Start the engine at all times. 10 SR 340, SR 420 For specific starting . The assistance of your back after starting instructions, see the appropriate section of another person may be started and operated without assistance. ... the handle, keeping the control handle cradled between your hand. Do not let the grip snap back, but guide the starter rope to have your STIHL dealer for damage (cracks, nicks, chipping). To reduce the risk of the outlet nozzle or exhaust. If any damage is found, stop using the unit...
Instruction Manual
Page 14
... Remove excess lubricant and all protective clothing separately from other items. Follow any nonroad engine repair establishment or individual. Never modify your STIHL servicing dealer only. You may deny coverage. !Warning! This helps to prevent the solution from any maintenance or repair work or ... and systems may have undesirable effects during subsequent spraying with soap and water after each use. Use of the chemical manufacturer. SR 340, SR 420 13 The muffler could later cause clogging and chemical damage to the unit. Empty, rinse and clean container and assembly after ...
... Remove excess lubricant and all protective clothing separately from other items. Follow any nonroad engine repair establishment or individual. Never modify your STIHL servicing dealer only. You may deny coverage. !Warning! This helps to prevent the solution from any maintenance or repair work or ... and systems may have undesirable effects during subsequent spraying with soap and water after each use. Use of the chemical manufacturer. SR 340, SR 420 13 The muffler could later cause clogging and chemical damage to the unit. Empty, rinse and clean container and assembly after ...
Instruction Manual
Page 15
... system with a spark-arresting screen to the limited warranty statement near the end of forest fires is already connected and must still turn. 14 SR 340, SR 420 For any maintenance or repair work performed by your power tool if the screen is damaged, missing or modified. An improperly maintained muffler will go... (3) in the hexagon recess in the stub. : Insert the screw in a dry and high or locked location out of reach of fire, never operate your STIHL servicing dealer only. !Warning!
... system with a spark-arresting screen to the limited warranty statement near the end of forest fires is already connected and must still turn. 14 SR 340, SR 420 For any maintenance or repair work performed by your power tool if the screen is damaged, missing or modified. An improperly maintained muffler will go... (3) in the hexagon recess in the stub. : Insert the screw in a dry and high or locked location out of reach of fire, never operate your STIHL servicing dealer only. !Warning!
Instruction Manual
Page 18
... of storage. Fuel English / USA This engine is also important. This could cause running problems or even damage the engine. We recommend STIHL 50:1 two-stroke engine oil since it vigorously by hand to operate on a vehicle. When mixing, pour oil into the mixture. Use only...and the canister in order to avoid any moisture getting into the canister first, and then add gasoline. If the octane rating of 89 (R+M/2). SR 340, SR 420 17 Your engine requires a mixture of piston seizure and damage to exceed 3 months of the oil with a minimum octane rating of the mid...
... of storage. Fuel English / USA This engine is also important. This could cause running problems or even damage the engine. We recommend STIHL 50:1 two-stroke engine oil since it vigorously by hand to operate on a vehicle. When mixing, pour oil into the mixture. Use only...and the canister in order to avoid any moisture getting into the canister first, and then add gasoline. If the octane rating of 89 (R+M/2). SR 340, SR 420 17 Your engine requires a mixture of piston seizure and damage to exceed 3 months of the oil with a minimum octane rating of the mid...
Instruction Manual
Page 31
Always press spark plug boot (2) snugly onto spark plug terminal (1) of fire and burn injury, use only spark plugs authorized by STIHL. English / USA Replacing Starter Rope and Rewind Spring 1 1 2 5 4 1 3 1 000BA036 TR 373BA025 KN 353BA034 KN To reduce the risk of the proper size. (Note: If terminal ... starter rope : Remove the screws (1). : Take the starter cover (2) off the engine. : Remove the spring clip (3). : Remove the rope rotor with washer (4) and pawl (5). 30 SR 340, SR 420
Always press spark plug boot (2) snugly onto spark plug terminal (1) of fire and burn injury, use only spark plugs authorized by STIHL. English / USA Replacing Starter Rope and Rewind Spring 1 1 2 5 4 1 3 1 000BA036 TR 373BA025 KN 353BA034 KN To reduce the risk of the proper size. (Note: If terminal ... starter rope : Remove the screws (1). : Take the starter cover (2) off the engine. : Remove the spring clip (3). : Remove the rope rotor with washer (4) and pawl (5). 30 SR 340, SR 420
Instruction Manual
Page 35
..., leaks) x Metering unit Check x x Anti-vibration elements Visual inspection x Have replaced by dealer 1) x x x Check x x Blower air intake screen Clean x Safety labels Replace x 1) STIHL recommends a STIHL servicing dealer 34 SR 340, SR 420 If your daily working time is longer than normal or operating conditions are difficult (very dusty work or daily after 100 hours of...
..., leaks) x Metering unit Check x x Anti-vibration elements Visual inspection x Have replaced by dealer 1) x x x Check x x Blower air intake screen Clean x Safety labels Replace x 1) STIHL recommends a STIHL servicing dealer 34 SR 340, SR 420 If your daily working time is longer than normal or operating conditions are difficult (very dusty work or daily after 100 hours of...
Instruction Manual
Page 39
Warranty claims following repairs can be performed only by an authorized STIHL servicing dealer using original STIHL replacement parts. Other repair work may be identified by the STlHL part number, the STIHl logo and, in this unit should carry out only the maintenance operations ...if the repair has been performed by authorized STIHL service shops. Original STlHL parts can be available for your STIHL dealer for information regarding special accessories that may appear alone on small parts. 38 SR 340, SR 420 English / USA Special Accessories Maintenance and Repairs ...
Warranty claims following repairs can be performed only by an authorized STIHL servicing dealer using original STIHL replacement parts. Other repair work may be identified by the STlHL part number, the STIHl logo and, in this unit should carry out only the maintenance operations ...if the repair has been performed by authorized STIHL service shops. Original STlHL parts can be available for your STIHL dealer for information regarding special accessories that may appear alone on small parts. 38 SR 340, SR 420 English / USA Special Accessories Maintenance and Repairs ...
Instruction Manual
Page 40
... engine will be free from the date of sale, to the ultimate purchaser and each subsequent purchaser that is purchased by STIHL Incorporated STIHL Incorporated warrants to meet the U.S. English / USA You are pleased to exceed 30 days. Box 2015, Virginia Beach, ...the time of sale to STIHL Inc., 536 Viking Drive, P.O. EPA regulations for California: STIHL Incorporated Federal Emission Control Warranty Statement Your Warranty Rights and Obligations The U.S. STIHL Incorporated recommends that you can write to the ultimate purchaser. SR 340, SR 420 39 new 1997 and ...
... engine will be free from the date of sale, to the ultimate purchaser and each subsequent purchaser that is purchased by STIHL Incorporated STIHL Incorporated warrants to meet the U.S. English / USA You are pleased to exceed 30 days. Box 2015, Virginia Beach, ...the time of sale to STIHL Inc., 536 Viking Drive, P.O. EPA regulations for California: STIHL Incorporated Federal Emission Control Warranty Statement Your Warranty Rights and Obligations The U.S. STIHL Incorporated recommends that you can write to the ultimate purchaser. SR 340, SR 420 39 new 1997 and ...
Instruction Manual
Page 41
... maintenance at and after the first scheduled replacement point. 40 SR 340, SR 420 Any manufacturer-approved or equivalent replacement part may be used for the cost of the emission test. STIHL Incorporated is liable for that adversely affect performance and/or durability... or replacement required because of misuse, neglect or lack of required maintenance, : repairs improperly performed or replacements not conforming to STIHL Incorporated specifications that part. Any warranted part which leads to the determination that a warranted part is defective. Maintenance Requirements The ...
... maintenance at and after the first scheduled replacement point. 40 SR 340, SR 420 Any manufacturer-approved or equivalent replacement part may be used for the cost of the emission test. STIHL Incorporated is liable for that adversely affect performance and/or durability... or replacement required because of misuse, neglect or lack of required maintenance, : repairs improperly performed or replacements not conforming to STIHL Incorporated specifications that part. Any warranted part which leads to the determination that a warranted part is defective. Maintenance Requirements The ...
Instruction Manual
Page 42
KG, Waiblingen is subject to change. SR 340, SR 420 41 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™ ElastoStart™...
KG, Waiblingen is subject to change. SR 340, SR 420 41 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™ ElastoStart™...
