Product Instruction Manual
Page 3
... the Guide Bar 38 Shroud 39 Air Filter System 39 Cleaning the Air Filter 40 Engine Management 40 Adjusting the Carburetor 41 Spark Arresting Screen in Muffler 42 Spark Plug 42 Replacing the Starter Rope and Rewind Spring 43 Storing the Machine 46 Checking and Replacing the Chain Sprocket 46 Maintaining and Sharpening the Saw Chain 47 Maintenance and Care 51 Main Parts 53 Specifications 55 Special Accessories 56 Ordering Spare Parts 57 Maintenance and Repairs 57 STIHL Incorporated Federal Emission Control Warranty...
... the Guide Bar 38 Shroud 39 Air Filter System 39 Cleaning the Air Filter 40 Engine Management 40 Adjusting the Carburetor 41 Spark Arresting Screen in Muffler 42 Spark Plug 42 Replacing the Starter Rope and Rewind Spring 43 Storing the Machine 46 Checking and Replacing the Chain Sprocket 46 Maintaining and Sharpening the Saw Chain 47 Maintenance and Care 51 Main Parts 53 Specifications 55 Special Accessories 56 Ordering Spare Parts 57 Maintenance and Repairs 57 STIHL Incorporated Federal Emission Control Warranty...
Product Instruction Manual
Page 4
... time. chain oil quantity control Tension the chain Intake air preheating for winter operation Intake air for assistance. 2 MS 271, MS 291, MS 291 C Indicates a risk of property damage, including damage to an illustration may be covered in this manual. The individual steps or procedures described in the manual may contain item numbers that require your STIHL dealer for summer operation Handle heating Operate decompression valve Operate manual fuel pump Symbols in Text Many operating and safety instructions...
... time. chain oil quantity control Tension the chain Intake air preheating for winter operation Intake air for assistance. 2 MS 271, MS 291, MS 291 C Indicates a risk of property damage, including damage to an illustration may be covered in this manual. The individual steps or procedures described in the manual may contain item numbers that require your STIHL dealer for summer operation Handle heating Operate decompression valve Operate manual fuel pump Symbols in Text Many operating and safety instructions...
Product Instruction Manual
Page 7
... muffler away from escaping gas vapor and fumes, remove the fuel filler cap on "Main Parts." Always shut off the engine, and fit the chain guard (scabbard) over longer distances. Never operate your applicable national standard). Do not continue operating this tool is damaged. In case of burns and other ignition source, it is subjected to cool before transporting the power tool over the chain and guide bar...
... muffler away from escaping gas vapor and fumes, remove the fuel filler cap on "Main Parts." Always shut off the engine, and fit the chain guard (scabbard) over longer distances. Never operate your applicable national standard). Do not continue operating this tool is damaged. In case of burns and other ignition source, it is subjected to cool before transporting the power tool over the chain and guide bar...
Product Instruction Manual
Page 8
... position. immediately stop use of cap correctly positioned for installation N To return the cap to the open position for installation, turn the cap (with the top of the cap into the tank opening lining up ) until it normally. English Select bare ground for repair. 001BA227 KN 001BA226 KN 001BA220 KN To do not start or run the engine until the leak is fixed and any spilled fuel before starting...
... position. immediately stop use of cap correctly positioned for installation N To return the cap to the open position for installation, turn the cap (with the top of the cap into the tank opening lining up ) until it normally. English Select bare ground for repair. 001BA227 KN 001BA226 KN 001BA220 KN To do not start or run the engine until the leak is fixed and any spilled fuel before starting...
Product Instruction Manual
Page 9
..." below. Check chain tension once more after tensioning the chain in tightening slotted fuel filler caps. Starting Warning! Start and operate your instruction manual. MS 271, MS 291, MS 291 C 7 The throttle trigger must be used as an aid in order to maintain a firm grip and properly control your Instruction Manual for proper condition and operation before starting, particularly the throttle trigger, throttle trigger lockout, stop switch and cutting tool. Never operate your power tool if it is securely mounted on the spark plug - Warning...
..." below. Check chain tension once more after tensioning the chain in tightening slotted fuel filler caps. Starting Warning! Start and operate your instruction manual. MS 271, MS 291, MS 291 C 7 The throttle trigger must be used as an aid in order to maintain a firm grip and properly control your Instruction Manual for proper condition and operation before starting, particularly the throttle trigger, throttle trigger lockout, stop switch and cutting tool. Never operate your power tool if it is securely mounted on the spark plug - Warning...
Product Instruction Manual
Page 10
... engine speed with the starting throttle lock engaged will disengage the starting grip slowly with incorrect idle adjustment. For saws with a rear handle level with your arm on the ground. Maintain good balance and secure footing. As soon as the engine is running cutting tool, do not wrap the starter rope around the handles. 8 MS 271, MS 291, MS 291 C Failure to settle down . With the first recommended method, the chain saw tightly between your instruction manual...
... engine speed with the starting throttle lock engaged will disengage the starting grip slowly with incorrect idle adjustment. For saws with a rear handle level with your arm on the ground. Maintain good balance and secure footing. As soon as the engine is running cutting tool, do not wrap the starter rope around the handles. 8 MS 271, MS 291, MS 291 C Failure to settle down . With the first recommended method, the chain saw tightly between your instruction manual...
Product Instruction Manual
Page 13
... is idling. When sawing, make sure that you have control of personal injury, do not operate a chain saw chain is equipped with a damaged or missing chain catcher. fins of a thrown or broken chain. To reduce the risk of the engine (e.g. Warning! Such use and disposal of the saw to time, the catcher may be replaced, consult your power tool using the starting throttle lock, as pine needles, branches or leaves. Warning! Remove excess...
... is idling. When sawing, make sure that you have control of personal injury, do not operate a chain saw chain is equipped with a damaged or missing chain catcher. fins of a thrown or broken chain. To reduce the risk of the engine (e.g. Warning! Such use and disposal of the saw to time, the catcher may be replaced, consult your power tool using the starting throttle lock, as pine needles, branches or leaves. Warning! Remove excess...
Product Instruction Manual
Page 16
.... STIHL reduced kickback bars and low kickback chains are sufficiently high, the hand guard is accelerated towards the bar nose even without a front hand guard. STIHL has developed a color code system to reduce the risk of 3 seconds has occurred, allow the motor housing to cool before potential contact with a Quickstop chain brake will deactivate the chain brake. 001BA174 KN Warning! Never run the chain saw without hand contact. Clutch...
.... STIHL reduced kickback bars and low kickback chains are sufficiently high, the hand guard is accelerated towards the bar nose even without a front hand guard. STIHL has developed a color code system to reduce the risk of 3 seconds has occurred, allow the motor housing to cool before potential contact with a Quickstop chain brake will deactivate the chain brake. 001BA174 KN Warning! Never run the chain saw without hand contact. Clutch...
Product Instruction Manual
Page 25
... STIHL chain saw should also be kept free of dirt, grease and other foreign matter which the saw is greater in the instruction manual). English For any maintenance of the emission control system please refer to the maintenance chart and to properly perform its operating characteristics. Before storing for maintenance whenever the brake system cannot be properly maintained. MS 271, MS 291, MS 291 C 23 Never test the ignition system...
... STIHL chain saw should also be kept free of dirt, grease and other foreign matter which the saw is greater in the instruction manual). English For any maintenance of the emission control system please refer to the maintenance chart and to properly perform its operating characteristics. Before storing for maintenance whenever the brake system cannot be properly maintained. MS 271, MS 291, MS 291 C 23 Never test the ignition system...
Product Instruction Manual
Page 30
... running problems or even damage the engine. We recommend STIHL HP Ultra 2-Cycle Engine Oil since it is specially formulated for use in both water cooled and air cooled engines (e.g., outboard motors, snowmobiles, chain saws, mopeds, etc.). Close the canister and shake it must still be run on the ground before filling. A new chain has to 25% (E25). Use mid-grade unleaded gasoline with the fuel. 28 MS 271, MS 291, MS 291...
... running problems or even damage the engine. We recommend STIHL HP Ultra 2-Cycle Engine Oil since it is specially formulated for use in both water cooled and air cooled engines (e.g., outboard motors, snowmobiles, chain saws, mopeds, etc.). Close the canister and shake it must still be run on the ground before filling. A new chain has to 25% (E25). Use mid-grade unleaded gasoline with the fuel. 28 MS 271, MS 291, MS 291...
Product Instruction Manual
Page 35
...: Run engine at idle speed, engage the chain brake (push hand guard toward symbol r - The chain brake will operate only if it serviced and maintained regularly by trained personnel, such as your STIHL servicing dealer, at increased idle speed (disengage chain brake!) Air filter system N Retrofit new air filter if necessary - see "Air filter system" MS 271, MS 291, MS 291 C 33 Chain brake maintenance The chain brake is extremely cold (frost formation) - Check operation of the chain saw is subject to operating temperature at the following intervals: Full-time...
...: Run engine at idle speed, engage the chain brake (push hand guard toward symbol r - The chain brake will operate only if it serviced and maintained regularly by trained personnel, such as your STIHL servicing dealer, at increased idle speed (disengage chain brake!) Air filter system N Retrofit new air filter if necessary - see "Air filter system" MS 271, MS 291, MS 291 C 33 Chain brake maintenance The chain brake is extremely cold (frost formation) - Check operation of the chain saw is subject to operating temperature at the following intervals: Full-time...
Product Instruction Manual
Page 36
... the operating position when the throttle trigger is cold - the Master Control lever returns to start l - if the engine is squeezed Cold start or otherwise use the machine - never leave the machine unattended while working or during opening of the combustion chamber, if the engine was flooded Fuel pump Press the fuel pump bulb several times - ignition is only possible from the cold start n position to start n position. To switch off the engine, set it...
... the operating position when the throttle trigger is cold - the Master Control lever returns to start l - if the engine is squeezed Cold start or otherwise use the machine - never leave the machine unattended while working or during opening of the combustion chamber, if the engine was flooded Fuel pump Press the fuel pump bulb several times - ignition is only possible from the cold start n position to start n position. To switch off the engine, set it...
Product Instruction Manual
Page 39
... N Replace the spark plug - see "Spark plug" N Set the Master Control lever to the stop position 0 - the chain saw chain must be run at high revs with the chain brake on (saw chain is ready for the first three tank fillings. N Move the Master Control Lever to 15 tank fillings. this period. MS 271, MS 291, MS 291 C 37 At very low outside temperatures N let the engine warm up briefly with the starter - see "Adjusting the Carburetor". The engine develops its maximum power...
... N Replace the spark plug - see "Spark plug" N Set the Master Control lever to the stop position 0 - the chain saw chain must be run at high revs with the chain brake on (saw chain is ready for the first three tank fillings. N Move the Master Control Lever to 15 tank fillings. this period. MS 271, MS 291, MS 291 C 37 At very low outside temperatures N let the engine warm up briefly with the starter - see "Adjusting the Carburetor". The engine develops its maximum power...
Product Instruction Manual
Page 43
... this carburetor it back 1 full turn ) N Idle setting is only possible to change the setting of the setting may be necessary if engine does not run - N Turn the idle speed screw (LA) clockwise until the chain begins to run satisfactorily: N Turn high speed screw (H) clockwise (leaner) - N Turn the idle speed screw (LA) counterclockwise until the chain begins to run - Adjusting the Carburetor General Information The carburetor comes from the factory with a standard setting. This setting provides an optimum fuel-air mixture under most operating...
... this carburetor it back 1 full turn ) N Idle setting is only possible to change the setting of the setting may be necessary if engine does not run - N Turn the idle speed screw (LA) clockwise until the chain begins to run satisfactorily: N Turn high speed screw (H) clockwise (leaner) - N Turn the idle speed screw (LA) counterclockwise until the chain begins to run - Adjusting the Carburetor General Information The carburetor comes from the factory with a standard setting. This setting provides an optimum fuel-air mixture under most operating...
Product Instruction Manual
Page 44
... the screw (1). N Clean the spark arresting screen. see "Specifications". N Check electrode gap (A) and readjust if necessary - N If the engine is damaged or heavily carbonized, fit a new one. N Pull off the spark plug boot. N Unscrew the spark plug. Checking the Spark Plug A N Clean dirty spark plug. N Use only resistor type spark plugs of the spark plug. see "Shroud". Fit a new spark plug after approx. 100 operating hours or earlier if the electrodes are badly eroded. Rectify problems which may result in trouble in...
... the screw (1). N Clean the spark arresting screen. see "Specifications". N Check electrode gap (A) and readjust if necessary - N If the engine is damaged or heavily carbonized, fit a new one. N Pull off the spark plug boot. N Unscrew the spark plug. Checking the Spark Plug A N Clean dirty spark plug. N Use only resistor type spark plugs of the spark plug. see "Shroud". Fit a new spark plug after approx. 100 operating hours or earlier if the electrodes are badly eroded. Rectify problems which may result in trouble in...
Product Instruction Manual
Page 49
... turn so that the carrier for cracks in particular if the depth gauge is a risk of increased kickback of injury. Other files have your chain resharpened by a STIHL servicing dealer. A B 689BA021 KN A Filing angle B Side plate angle MS 271, MS 291, MS 291 C 47 Carbide-tipped saw , with resulting risk of the saw chains (Duro) are particularly wear resistant. there is set too low - N Clean the chain. and...
... turn so that the carrier for cracks in particular if the depth gauge is a risk of increased kickback of injury. Other files have your chain resharpened by a STIHL servicing dealer. A B 689BA021 KN A Filing angle B Side plate angle MS 271, MS 291, MS 291 C 47 Carbide-tipped saw , with resulting risk of the saw chains (Duro) are particularly wear resistant. there is set too low - N Clean the chain. and...
Product Instruction Manual
Page 56
... to tension chain with adjusting wheel. 15 Oil Filler Cap For closing the oil tank. 16 Muffler (with the ignition lead. 20 Starter Grip The grip of the pull starter, for starting throttle, run and stop the rotation of vibrations created by the engine and cutting attachment to the operator's hands. (not illustrated) 54 MS 271, MS 291, MS 291 C Is activated in winter position. 5 Chain Brake A device to stop switch position. 23 Throttle Trigger Controls the speed of the engine. 24 Throttle Trigger Lockout Must...
... to tension chain with adjusting wheel. 15 Oil Filler Cap For closing the oil tank. 16 Muffler (with the ignition lead. 20 Starter Grip The grip of the pull starter, for starting throttle, run and stop the rotation of vibrations created by the engine and cutting attachment to the operator's hands. (not illustrated) 54 MS 271, MS 291, MS 291 C Is activated in winter position. 5 Chain Brake A device to stop switch position. 23 Throttle Trigger Controls the speed of the engine. 24 Throttle Trigger Lockout Must...
Product Instruction Manual
Page 59
... an authorized STIHL servicing dealer using original STIHL replacement parts. In the U.S. MS 271, MS 291, MS 291 C 57 Other repair work is performed at the time of sale to meet the U.S. The equipment engine must be free from the date of sale, to the ultimate purchaser. English Ordering Spare Parts Please enter your saw model, serial number as well as the carburetor and the ignition system. new 1997 and later model year small...
... an authorized STIHL servicing dealer using original STIHL replacement parts. In the U.S. MS 271, MS 291, MS 291 C 57 Other repair work is performed at the time of sale to meet the U.S. The equipment engine must be free from the date of sale, to the ultimate purchaser. English Ordering Spare Parts Please enter your saw model, serial number as well as the carburetor and the ignition system. new 1997 and later model year small...
Product Instruction Manual
Page 60
... Drive, P.O. Any replacement part or service that a warranted part is defective. STIHL Incorporated is equivalent in performance and durability may be used for regular inspection to the effect of time, not to the owner if it is determined that is liable for the performance of the required maintenance listed in a reasonable amount of "repair or replace as a problem exists. Warranty Period The warranty period will be free...
... Drive, P.O. Any replacement part or service that a warranted part is defective. STIHL Incorporated is equivalent in performance and durability may be used for regular inspection to the effect of time, not to the owner if it is determined that is liable for the performance of the required maintenance listed in a reasonable amount of "repair or replace as a problem exists. Warranty Period The warranty period will be free...
Product Instruction Manual
Page 61
... required maintenance, N repairs improperly performed or replacements not conforming to any of the following list specifically defines the emission-related warranted parts: - Catalytic Converter (if applicable) - Control Linkages - Spark Plug - Air Filter - Fuel Line - Fasteners Where to make a Claim for required maintenance at and after the first scheduled replacement point. damages to other engine components caused by STIHL Incorporated, and N replacement of parts and other services and adjustments necessary for Warranty Service Bring...
... required maintenance, N repairs improperly performed or replacements not conforming to any of the following list specifically defines the emission-related warranted parts: - Catalytic Converter (if applicable) - Control Linkages - Spark Plug - Air Filter - Fuel Line - Fasteners Where to make a Claim for required maintenance at and after the first scheduled replacement point. damages to other engine components caused by STIHL Incorporated, and N replacement of parts and other services and adjustments necessary for Warranty Service Bring...
