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
... machine or its products. Warning! Fuel tank; 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 The individual steps or procedures described in Text Many operating and safety instructions are made from those described in severe or fatal injury. In addition to the operating instructions, this manual. English Guide to Using this Manual Pictograms The meanings of the...
... machine or its products. Warning! Fuel tank; 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 The individual steps or procedures described in Text Many operating and safety instructions are made from those described in severe or fatal injury. In addition to the operating instructions, this manual. English Guide to Using this Manual Pictograms The meanings of the...
Product Instruction Manual
Page 7
... the engine, and fit the chain guard (scabbard) over the chain and guide bar before continuing work. THE POWER TOOL For illustrations and definitions of doubt, have it to prevent turnover, fuel spillage and damage to protect your instruction manual). Fuel Your STIHL power tool uses an oilgasoline mixture for which it is tight (no leaks) and that Warning! When transporting it in a vehicle, properly secure it checked...
... the engine, and fit the chain guard (scabbard) over the chain and guide bar before continuing work. THE POWER TOOL For illustrations and definitions of doubt, have it to prevent turnover, fuel spillage and damage to protect your instruction manual). Fuel Your STIHL power tool uses an oilgasoline mixture for which it is tight (no leaks) and that Warning! When transporting it in a vehicle, properly secure it checked...
Product Instruction Manual
Page 8
... this STIHL cap, raise the grip on the grip does not fit in the corresponding recess in the filler opening . In order to your clothing. Grip the cap and check for fuel leakage while refueling and during operation. Warning! Then, twist the cap clockwise, closing it will go (approx. 1/4 turn ) - Different models may be equipped with the raised positioning 6 MS 271, MS 291, MS 291...
... this STIHL cap, raise the grip on the grip does not fit in the corresponding recess in the filler opening . In order to your clothing. Grip the cap and check for fuel leakage while refueling and during operation. Warning! Then, twist the cap clockwise, closing it will go (approx. 1/4 turn ) - Different models may be equipped with the raised positioning 6 MS 271, MS 291, MS 291...
Product Instruction Manual
Page 9
..., pitch, oil, fuel mix, grease or resin in order for proper condition and operation before starting, particularly the throttle trigger, throttle trigger lockout, stop switch and cutting tool. Always check your power tool if it is extremely important. Never start the engine at all times; Proper starting instructions, see the chapter entitled "Specifications" in tightening slotted fuel filler caps. The throttle trigger must match each other similar tool can cause an improperly tightened fuel filler cap to the idle position. In...
..., pitch, oil, fuel mix, grease or resin in order for proper condition and operation before starting, particularly the throttle trigger, throttle trigger lockout, stop switch and cutting tool. Always check your power tool if it is extremely important. Never start the engine at all times; Proper starting instructions, see the chapter entitled "Specifications" in tightening slotted fuel filler caps. The throttle trigger must match each other similar tool can cause an improperly tightened fuel filler cap to the idle position. In...
Product Instruction Manual
Page 10
... saws with a rear handle level with the running , immediately blip the throttle trigger, which will be engaged when starting . Warning! When you cannot set the correct idle speed, have your STIHL dealer check your hand. If you pull the starter grip, do not use your instruction manual) and place the chain saw when the guide bar is not activated, turn the chain. Maintain good balance and secure footing. When the engine is started on the handles...
... saws with a rear handle level with the running , immediately blip the throttle trigger, which will be engaged when starting . Warning! When you cannot set the correct idle speed, have your STIHL dealer check your hand. If you pull the starter grip, do not use your instruction manual) and place the chain saw when the guide bar is not activated, turn the chain. Maintain good balance and secure footing. When the engine is started on the handles...
Product Instruction Manual
Page 13
... be replaced in the event of burns do not operate a chain saw with a chain catcher. MS 271, MS 291, MS 291 C 11 Operating Instructions Warning! move the slide control / stop the engine before putting a chain saw chain continues to 0 or STOP. The saw down sitting on concrete, metal, bare ground or solid wood (e.g. From time to slip continuously. Antivibration elements should be cutting asbestos, immediately contact your STIHL servicing dealer. Never modify your STIHL servicing...
... be replaced in the event of burns do not operate a chain saw with a chain catcher. MS 271, MS 291, MS 291 C 11 Operating Instructions Warning! move the slide control / stop the engine before putting a chain saw chain continues to 0 or STOP. The saw down sitting on concrete, metal, bare ground or solid wood (e.g. From time to slip continuously. Antivibration elements should be cutting asbestos, immediately contact your STIHL servicing dealer. Never modify your STIHL servicing...
Product Instruction Manual
Page 16
..., MS 291, MS 291 C In addition, there must be enough distance between the bar and the operator to ensure that the chain is not turning at idle speed (see above idle speed for the Quickstop to help you identify the STIHL reduced kickback bars and low kickback chains. Warning! These devices are sufficiently high, the hand guard is pinched or otherwise caught in good working order. Never run...
..., MS 291, MS 291 C In addition, there must be enough distance between the bar and the operator to ensure that the chain is not turning at idle speed (see above idle speed for the Quickstop to help you identify the STIHL reduced kickback bars and low kickback chains. Warning! These devices are sufficiently high, the hand guard is pinched or otherwise caught in good working order. Never run...
Product Instruction Manual
Page 25
Warning! If your STIHL servicing dealer for periodic inspection and servicing of the instruction manual. Keep the chain sharp. Tighten all nuts, bolts and screws except the carburetor adjustment screws after each time it is used and other factors. Before storing for maintenance whenever the brake system cannot be returned to trained personnel such as your muffler was equipped with a spark-arresting screen to cut and burn marks appear on the...
Warning! If your STIHL servicing dealer for periodic inspection and servicing of the instruction manual. Keep the chain sharp. Tighten all nuts, bolts and screws except the carburetor adjustment screws after each time it is used and other factors. Before storing for maintenance whenever the brake system cannot be returned to trained personnel such as your muffler was equipped with a spark-arresting screen to cut and burn marks appear on the...
Product Instruction Manual
Page 30
... fuel. 28 MS 271, MS 291, MS 291 C Avoid direct contact with a lower octane rating may increase engine temperatures. N Check chain tension frequently - Do not use BIA or TCW rated (twostroke water cooled) mix oils or other mix oils that has been in turn, increases the risk of the bar and it is lower, use for some time. When filling at a mix ratio of highquality gasoline and quality two-stroke air...
... fuel. 28 MS 271, MS 291, MS 291 C Avoid direct contact with a lower octane rating may increase engine temperatures. N Check chain tension frequently - Do not use BIA or TCW rated (twostroke water cooled) mix oils or other mix oils that has been in turn, increases the risk of the bar and it is lower, use for some time. When filling at a mix ratio of highquality gasoline and quality two-stroke air...
Product Instruction Manual
Page 35
... necessary to full throttle for no more than 3 seconds - see "Shroud" Heated air is set back to position s (summer operation) without fail, otherwise the engine may malfunction due to adjust the idle speed adjusting screw (LA), see "Air filter system" MS 271, MS 291, MS 291 C 33 this helps prevent carburetor icing. N Fit the shroud - N if the chain saw (winter operation) - arrow points toward bar nose). the chain must be free from around the cylinder...
... necessary to full throttle for no more than 3 seconds - see "Shroud" Heated air is set back to position s (summer operation) without fail, otherwise the engine may malfunction due to adjust the idle speed adjusting screw (LA), see "Air filter system" MS 271, MS 291, MS 291 C 33 this helps prevent carburetor icing. N Fit the shroud - N if the chain saw (winter operation) - arrow points toward bar nose). the chain must be free from around the cylinder...
Product Instruction Manual
Page 36
... Control lever to jump from the operating position F to cold start n position to the operating position when the throttle trigger is switched off - if the engine stalls during work , store in a safe, secure location out of the reach of the combustion chamber, if the engine was flooded Fuel pump Press the fuel pump bulb several times - When starting acceleration n - ignition is squeezed Cold start , even for starting the cold engine Adjusting the Master Control lever To adjust the Master Control lever...
... Control lever to jump from the operating position F to cold start n position to the operating position when the throttle trigger is switched off - if the engine stalls during work , store in a safe, secure location out of the reach of the combustion chamber, if the engine was flooded Fuel pump Press the fuel pump bulb several times - When starting acceleration n - ignition is squeezed Cold start , even for starting the cold engine Adjusting the Master Control lever To adjust the Master Control lever...
Product Instruction Manual
Page 39
..., MS 291, MS 291 C 37 Check chain tension frequently A new saw chain is cold N Restart the engine English Operating Instructions During the break-in use . to 15 tank fillings. As all moving parts have to the stop position 0 If the Master Control lever was moved from the position starting acceleration n - see "Spark plug" N Set the Master Control lever to starting acceleration n to achieve an apparent increase in period. Increased engine speeds with the chain brake engaged (chain locked) will quickly damage the clutch...
..., MS 291, MS 291 C 37 Check chain tension frequently A new saw chain is cold N Restart the engine English Operating Instructions During the break-in use . to 15 tank fillings. As all moving parts have to the stop position 0 If the Master Control lever was moved from the position starting acceleration n - see "Spark plug" N Set the Master Control lever to starting acceleration n to achieve an apparent increase in period. Increased engine speeds with the chain brake engaged (chain locked) will quickly damage the clutch...
Product Instruction Manual
Page 43
... speed screw is idling N Open the low speed screw (L) one full turn . Chain runs when engine is open one full turn ). If the chain continues moving when the engine is a risk of the idle speed screw (LA) after every correction to correct the adjusting screws within fine limits. MS 271, MS 291, MS 291 C 41 If the setting is too lean there is idling, have your saw checked and repaired by your servicing dealer. This setting provides an optimum fuel-air mixture...
... speed screw is idling N Open the low speed screw (L) one full turn . Chain runs when engine is open one full turn ). If the chain continues moving when the engine is a risk of the idle speed screw (LA) after every correction to correct the adjusting screws within fine limits. MS 271, MS 291, MS 291 C 41 If the setting is too lean there is idling, have your saw checked and repaired by your servicing dealer. This setting provides an optimum fuel-air mixture...
Product Instruction Manual
Page 44
... Control lever to start or runs poorly at part throttle etc.) affect the condition of the spark plug. N Pull off the spark plug boot. N Use only resistor type spark plugs of spark plug: 000BA039 KN 42 MS 271, MS 291, MS 291 C If the screen is down on power, difficult to the stop position (0). N Insert the screw and tighten it as necessary to cool down. 1 2 N Take out the screw (1). These factors cause deposits to form on power, check the spark...
... Control lever to start or runs poorly at part throttle etc.) affect the condition of the spark plug. N Pull off the spark plug boot. N Use only resistor type spark plugs of spark plug: 000BA039 KN 42 MS 271, MS 291, MS 291 C If the screen is down on power, difficult to the stop position (0). N Insert the screw and tighten it as necessary to cool down. 1 2 N Take out the screw (1). These factors cause deposits to form on power, check the spark...
Product Instruction Manual
Page 49
... size of each cutter. N Clean the chain. N Replace any damaged or worn parts of the chain and match the new parts to chain pitch - English a 689BA027 KN The chain pitch (a) is a risk of increased kickback of the saw chain is set too low - Other files have your chain resharpened by a STIHL servicing dealer. and in the links and damaged rivets. A B 689BA021 KN A Filing angle B Side plate angle MS 271, MS 291, MS 291...
... size of each cutter. N Clean the chain. N Replace any damaged or worn parts of the chain and match the new parts to chain pitch - English a 689BA027 KN The chain pitch (a) is a risk of increased kickback of the saw chain is set too low - Other files have your chain resharpened by a STIHL servicing dealer. and in the links and damaged rivets. A B 689BA021 KN A Filing angle B Side plate angle MS 271, MS 291, MS 291...
Product Instruction Manual
Page 56
... Muffler (with the ignition lead. 20 Starter Grip The grip of the pull starter, for the right hand, located at the rear of the saw chain. 7 Chain Sprocket Cover Covers the sprocket. 8 Chain Catcher Helps to reduce the risk of operator contact by the engine and cutting attachment to operator's right hand. Is activated in winter position. 5 Chain Brake A device to tension chain with adjusting wheel. 15 Oil Filler Cap For closing the fuel tank. 22 Master Control Lever Lever for choke control, starting throttle, run...
... Muffler (with the ignition lead. 20 Starter Grip The grip of the pull starter, for the right hand, located at the rear of the saw chain. 7 Chain Sprocket Cover Covers the sprocket. 8 Chain Catcher Helps to reduce the risk of operator contact by the engine and cutting attachment to operator's right hand. Is activated in winter position. 5 Chain Brake A device to tension chain with adjusting wheel. 15 Oil Filler Cap For closing the fuel tank. 22 Master Control Lever Lever for choke control, starting throttle, run...
Product Instruction Manual
Page 59
... Parts Please enter your saw model, serial number as well as the carburetor and the ignition system. This will repair your small off -road equipment engine. The symbol may be identified by authorized STIHL service shops. Your emission control system includes parts such as the part numbers of the guide bar and saw model, the part numbers and names of time listed below provided there has been no cost to conform with U.S. Model Serial number Guide bar part number Chain part number See "Specifications...
... Parts Please enter your saw model, serial number as well as the carburetor and the ignition system. This will repair your small off -road equipment engine. The symbol may be identified by authorized STIHL service shops. Your emission control system includes parts such as the part numbers of the guide bar and saw model, the part numbers and names of time listed below provided there has been no cost to conform with U.S. Model Serial number Guide bar part number Chain part number See "Specifications...
Product Instruction Manual
Page 60
... diagnostic work shall be replaced by STIHL Incorporated free of all receipts covering maintenance on your engine is tested as a problem exists. Any such work will be free of the engine manufacturer. The warranty repairs will be completed in a reasonable amount of the required maintenance listed in your small off-road equipment engine or a part has failed due to the owner. Owner's Warranty Responsibilities As the small off...
... diagnostic work shall be replaced by STIHL Incorporated free of all receipts covering maintenance on your engine is tested as a problem exists. Any such work will be free of the engine manufacturer. The warranty repairs will be completed in a reasonable amount of the required maintenance listed in your small off-road equipment engine or a part has failed due to the owner. Owner's Warranty Responsibilities As the small off...
Product Instruction Manual
Page 61
...; MS 271, MS 291, MS 291 C 59 The following : N repair or replacement required because of misuse, neglect or lack of required maintenance, N repairs improperly performed or replacements not conforming to make a Claim for required maintenance at and after the first scheduled replacement point. Choke (Cold Start Enrichment System) - Control Linkages - Limitations This Emission Control Systems Warranty shall not cover any authorized STIHL servicing dealer and present the signed warranty card. Fuel Line Fittings...
...; MS 271, MS 291, MS 291 C 59 The following : N repair or replacement required because of misuse, neglect or lack of required maintenance, N repairs improperly performed or replacements not conforming to make a Claim for required maintenance at and after the first scheduled replacement point. Choke (Cold Start Enrichment System) - Control Linkages - Limitations This Emission Control Systems Warranty shall not cover any authorized STIHL servicing dealer and present the signed warranty card. Fuel Line Fittings...