Instruction Manual
Page 3
... of the instructions in Muffler 42 Spark Plug 43 Rewind Starter 44 Storing the Machine 44 Checking and Replacing the Chain Sprocket 45 Maintaining and Sharpening the Saw Chain 46 Maintenance and Care 50 Main Parts 52 { MS 271, MS 271 C, MS 291, MS 291 C Specifications Ordering Spare Parts Maintenance and Repairs Disposal STIHL Incorporated Federal Emission Control Warranty...
... of the instructions in Muffler 42 Spark Plug 43 Rewind Starter 44 Storing the Machine 44 Checking and Replacing the Chain Sprocket 45 Maintaining and Sharpening the Saw Chain 46 Maintenance and Care 50 Main Parts 52 { MS 271, MS 271 C, MS 291, MS 291 C Specifications Ordering Spare Parts Maintenance and Repairs Disposal STIHL Incorporated Federal Emission Control Warranty...
Instruction Manual
Page 9
...and sprocket must be followed as it drops fully into the correct position for proper condition and operation before using it normally. MS 271, MS 271 C, MS 291, MS 291 C 7 Never attempt to adjust the saw , let the engine run for additional information. WARNING Check fuel system ...) - WARNING Proper tension of the chain is securely mounted on the spark plug - N To return the cap to STOP, 0 or †. English For proper assembly of the bar and saw repaired by a STIHL servicing dealer before starting, particularly the throttle trigger, throttle trigger lockout, stop...
...and sprocket must be followed as it drops fully into the correct position for proper condition and operation before using it normally. MS 271, MS 271 C, MS 291, MS 291 C 7 Never attempt to adjust the saw , let the engine run for additional information. WARNING Check fuel system ...) - WARNING Proper tension of the chain is securely mounted on the spark plug - N To return the cap to STOP, 0 or †. English For proper assembly of the bar and saw repaired by a STIHL servicing dealer before starting, particularly the throttle trigger, throttle trigger lockout, stop...
Instruction Manual
Page 14
...not designed (e. Antivibration elements should be replaced in hot or dry conditions. 12 MS 271, MS 271 C, MS 291, MS 291 C In case of a felled tree) away from the muffler and need...of the engine (e.g. A "sponginess" in heat radiation, sparks or sound level, thereby increasing the risk of the cylinder, spark plug) become hot during normal operation may also permanently damage ...other parts while they may interfere with a spark arresting screen designed to kickback. Forestry Service if you have your STIHL servicing dealer. Remember that the saw around flammable...
...not designed (e. Antivibration elements should be replaced in hot or dry conditions. 12 MS 271, MS 271 C, MS 291, MS 291 C In case of a felled tree) away from the muffler and need...of the engine (e.g. A "sponginess" in heat radiation, sparks or sound level, thereby increasing the risk of the cylinder, spark plug) become hot during normal operation may also permanently damage ...other parts while they may interfere with a spark arresting screen designed to kickback. Forestry Service if you have your STIHL servicing dealer. Remember that the saw around flammable...
Instruction Manual
Page 26
... not been serviced or maintained properly or if nonapproved replacement parts were used to fire protection requirements. 24 MS 271, MS 271 C, MS 291, MS 291 C never operate your STIHL servicing dealer only. Watch out for a component which are used to remove the flywheel or if an ...that is greater in the boot may be securely attached.) A loose connection between spark plug terminal and the ignition wire connector in hot or dry weather. Always press spark plug boot snugly onto spark plug terminal of a brush or forest fire is maintained in good condition. MAINTENANCE, ...
... not been serviced or maintained properly or if nonapproved replacement parts were used to fire protection requirements. 24 MS 271, MS 271 C, MS 291, MS 291 C never operate your STIHL servicing dealer only. Watch out for a component which are used to remove the flywheel or if an ...that is greater in the boot may be securely attached.) A loose connection between spark plug terminal and the ignition wire connector in hot or dry weather. Always press spark plug boot snugly onto spark plug terminal of a brush or forest fire is maintained in good condition. MAINTENANCE, ...
Instruction Manual
Page 39
... start If you opened the throttle after the engine began to fire, the combustion chamber may be flooded. MS 271, MS 271 C, MS 291, MS 291 C 37 High revs with the starter to clear the combustion chamber. N Refit the spark plug - If the engine is now disengaged - depress the trigger lockout and throttle trigger at part throttle. see...
... start If you opened the throttle after the engine began to fire, the combustion chamber may be flooded. MS 271, MS 271 C, MS 291, MS 291 C 37 High revs with the starter to clear the combustion chamber. N Refit the spark plug - If the engine is now disengaged - depress the trigger lockout and throttle trigger at part throttle. see...
Instruction Manual
Page 45
... the Master Control lever to engage the spark plug's hexagon. MS 271, MS 271 C, MS 291, MS 291 C 43 Removing the spark plug 1 N Insert the combination wrench through the grommet (1) and turn it must be securely attached.) A loose connection between spark plug boot and ignition wire connector in the ... Push the combination fully home against the cylinder. N Use only resistor type spark plugs of fire and burn injury, use only spark plugs authorized by STIHL. Always press spark plug boot (1) snugly onto spark plug terminal (2) of the proper size. (Note: If terminal has detachable SAE ...
... the Master Control lever to engage the spark plug's hexagon. MS 271, MS 271 C, MS 291, MS 291 C 43 Removing the spark plug 1 N Insert the combination wrench through the grommet (1) and turn it must be securely attached.) A loose connection between spark plug boot and ignition wire connector in the ... Push the combination fully home against the cylinder. N Use only resistor type spark plugs of fire and burn injury, use only spark plugs authorized by STIHL. Always press spark plug boot (1) snugly onto spark plug terminal (2) of the proper size. (Note: If terminal has detachable SAE ...
Instruction Manual
Page 46
... other unauthorized persons. 44 MS 271, MS 271 C, MS 291, MS 291 C STIHL recommends that you use a biological chain and bar lubricant, e.g. N Run the engine until the carburetor is dry - this helps prevent the carburetor diaphragms sticking together. N Thoroughly clean the machine - STIHL BioPlus, completely fill the chain... pay special attention to snap back, guide it back into the housing slowly - English Installing the spark plug Rewind Starter Storing the Machine N Insert the spark plug through the grommet and screw it in a well ventilated area. N If you have servicing and ...
... other unauthorized persons. 44 MS 271, MS 271 C, MS 291, MS 291 C STIHL recommends that you use a biological chain and bar lubricant, e.g. N Run the engine until the carburetor is dry - this helps prevent the carburetor diaphragms sticking together. N Thoroughly clean the machine - STIHL BioPlus, completely fill the chain... pay special attention to snap back, guide it back into the housing slowly - English Installing the spark plug Rewind Starter Storing the Machine N Insert the spark plug through the grommet and screw it in a well ventilated area. N If you have servicing and ...
Instruction Manual
Page 53
... when working for longer than normal each day or under normal operating conditions. saw repaired by a servicing dealer1) Spark plug Adjust electrode gap Replace after 10 to 20 hours of operation All accessible screws, nuts and bolts (not adjusting screws...X X X X X X X X X X 1) STIHL recommends STIHL servicing dealers 2) During initial use of professional chain saws (with a power output of 3.4 kW or more), tighten the cylinder block screws after 100 hours of operation MS 271, MS 271 C, MS 291, MS 291 C 51 The following information applies under difficult conditions (...
... when working for longer than normal each day or under normal operating conditions. saw repaired by a servicing dealer1) Spark plug Adjust electrode gap Replace after 10 to 20 hours of operation All accessible screws, nuts and bolts (not adjusting screws...X X X X X X X X X X 1) STIHL recommends STIHL servicing dealers 2) During initial use of professional chain saws (with a power output of 3.4 kW or more), tighten the cylinder block screws after 100 hours of operation MS 271, MS 271 C, MS 291, MS 291 C 51 The following information applies under difficult conditions (...
Instruction Manual
Page 54
... Oil Filler Cap 14 Muffler (with Spark Arresting Screen) 15 Front Hand Guard 16 Front Handle (Handlebar) 17 Spark Plug Boot 18 Starter Grip 19 Fuel Filler Cap 20 Master Control Lever 21 Throttle Trigger 22 Throttle Trigger Lockout 23 Rear Handle 24 Rear Hand Guard # Serial Number 2710BA013 KN 52 MS 271, MS 271 C, MS 291, MS 291 C
... Oil Filler Cap 14 Muffler (with Spark Arresting Screen) 15 Front Hand Guard 16 Front Handle (Handlebar) 17 Spark Plug Boot 18 Starter Grip 19 Fuel Filler Cap 20 Master Control Lever 21 Throttle Trigger 22 Throttle Trigger Lockout 23 Rear Handle 24 Rear Hand Guard # Serial Number 2710BA013 KN 52 MS 271, MS 271 C, MS 291, MS 291 C
Instruction Manual
Page 55
Spark arresting screen is designed to the operator's hands. (not illustrated) MS 271, MS 271 C, MS 291, MS 291 C 53 Guide Bar Nose The exposed end of the guide bar. (not illustrated, see chapter "Tensioning the Saw Chain") Clutch Couples engine to chain ... engine is heated in a kickback situation by the operator's hand or by inertia. 6 Chain Sprocket The toothed wheel that drives the saw . 17 Spark Plug Boot Connects the spark plug with Spark Arresting Screen) Muffler reduces engine exhaust noise and diverts exhaust gases away from touching the chain if it breaks or comes off the...
Spark arresting screen is designed to the operator's hands. (not illustrated) MS 271, MS 271 C, MS 291, MS 291 C 53 Guide Bar Nose The exposed end of the guide bar. (not illustrated, see chapter "Tensioning the Saw Chain") Clutch Couples engine to chain ... engine is heated in a kickback situation by the operator's hand or by inertia. 6 Chain Sprocket The toothed wheel that drives the saw . 17 Spark Plug Boot Connects the spark plug with Spark Arresting Screen) Muffler reduces engine exhaust noise and diverts exhaust gases away from touching the chain if it breaks or comes off the...
Instruction Manual
Page 56
... Chain sprocket 7-tooth for .325" (spur sprocket) 54 MS 271, MS 271 C, MS 291, MS 291 C Category A = 300 hours B = 125 hours C = 50 hours Engine STIHL single cylinder two-stroke engine MS 271, MS 271 C Displacement: 3.06 cu. in. (55.5 cm3) ...Cylinder bore: 1.85 in. (47.0 mm) Piston stroke: 1.26 in. (32 mm) Engine power accord- 3.8 hp (2.8 kW) ing to ISO 7293: at 9,500 rpm Idling speed: 2,800 rpm Maximum permissible speed with cutting attachment: 13,000 rpm Ignition system Electronic magneto ignition Spark plug...
... Chain sprocket 7-tooth for .325" (spur sprocket) 54 MS 271, MS 271 C, MS 291, MS 291 C Category A = 300 hours B = 125 hours C = 50 hours Engine STIHL single cylinder two-stroke engine MS 271, MS 271 C Displacement: 3.06 cu. in. (55.5 cm3) ...Cylinder bore: 1.85 in. (47.0 mm) Piston stroke: 1.26 in. (32 mm) Engine power accord- 3.8 hp (2.8 kW) ing to ISO 7293: at 9,500 rpm Idling speed: 2,800 rpm Maximum permissible speed with cutting attachment: 13,000 rpm Ignition system Electronic magneto ignition Spark plug...
Instruction Manual
Page 59
... part which is scheduled for replacement as necessary" will be warranted for regular inspection to STIHL Inc., 536 Viking Drive, P.O. Carburetor (if applicable) - Catalytic Converter (if applicable) - Fasteners MS 271, MS 271 C, MS 291, MS 291 C 57 Muffler - problem exists. STIHL Incorporated is liable for English damages to other engine components caused by the initial purchaser and... will be completed in materials and workmanship which leads to the determination that a warranted part is purchased by the failure of time up to STIHL. Fly Wheel - Spark Plug -
... part which is scheduled for replacement as necessary" will be warranted for regular inspection to STIHL Inc., 536 Viking Drive, P.O. Carburetor (if applicable) - Catalytic Converter (if applicable) - Fasteners MS 271, MS 271 C, MS 291, MS 291 C 57 Muffler - problem exists. STIHL Incorporated is liable for English damages to other engine components caused by the initial purchaser and... will be completed in materials and workmanship which leads to the determination that a warranted part is purchased by the failure of time up to STIHL. Fly Wheel - Spark Plug -