Product Instruction Manual
Page 3
...Sharpening the Saw Chain 44 Maintenance and Care 47 { Main Parts Specifications Special Accessories Ordering Spare Parts Maintenance and Repairs STIHL Incorporated Federal Emission Control Warranty Statement Trademarks MS 311, MS 391 English 49 Allow only persons who fully understand 51 this manual. KG, 2009 0458-542-8621-A. Because a... 25 Chain Lubricant 27 Filling Chain Oil Tank 27 Checking Chain Lubrication 28 Chain Brake 28 Winter Operation 29 Starting / Stopping the Engine 30 Operating Instructions 34 Oil Quantity Control 35 Taking Care of its products.
...Sharpening the Saw Chain 44 Maintenance and Care 47 { Main Parts Specifications Special Accessories Ordering Spare Parts Maintenance and Repairs STIHL Incorporated Federal Emission Control Warranty Statement Trademarks MS 311, MS 391 English 49 Allow only persons who fully understand 51 this manual. KG, 2009 0458-542-8621-A. Because a... 25 Chain Lubricant 27 Filling Chain Oil Tank 27 Checking Chain Lubrication 28 Chain Brake 28 Winter Operation 29 Starting / Stopping the Engine 30 Operating Instructions 34 Oil Quantity Control 35 Taking Care of its products.
Product Instruction Manual
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... Wipe off any fire or flame near the fuel or the power tool. To do not start or run the engine until it checked by a spark or other personal injury from your STIHL servicing dealer. the fuel system is damaged. It may escape from an improperly tightened fuel cap,...) and that combustible fuel vapor may be equipped with the triangular marks on "Fuel" of doubt, have it is balanced 001BA115 KN horizontally. MS 311, MS 391 5 When transporting it to prevent turnover, fuel spillage and damage to release slowly. Warning! In order to reduce the risk of the cap...
... Wipe off any fire or flame near the fuel or the power tool. To do not start or run the engine until it checked by a spark or other personal injury from your STIHL servicing dealer. the fuel system is damaged. It may escape from an improperly tightened fuel cap,...) and that combustible fuel vapor may be equipped with the triangular marks on "Fuel" of doubt, have it is balanced 001BA115 KN horizontally. MS 311, MS 391 5 When transporting it to prevent turnover, fuel spillage and damage to release slowly. Warning! In order to reduce the risk of the cap...
Product Instruction Manual
Page 8
... proper condition and operation. (See the maintenance chart near the end of injury. 6 MS 311, MS 391 Never start the engine at least 10 feet (3 meters) from the fueling spot, outdoors only. For specific starting methods reduce the risk of the instruction manual.) Warning! The screwdriver end of fire and... bar. Never try to modify the controls or safety devices. Never operate your power tool for you must be used as possible. STIHL Oilomatic chain, guide bar and sprocket must move freely and always spring back to maintain a firm grip and properly control your power ...
... proper condition and operation. (See the maintenance chart near the end of injury. 6 MS 311, MS 391 Never start the engine at least 10 feet (3 meters) from the fueling spot, outdoors only. For specific starting methods reduce the risk of the instruction manual.) Warning! The screwdriver end of fire and... bar. Never try to modify the controls or safety devices. Never operate your power tool for you must be used as possible. STIHL Oilomatic chain, guide bar and sprocket must move freely and always spring back to maintain a firm grip and properly control your power ...
Product Instruction Manual
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...and controlling the power tool Always hold the unit firmly with the running , immediately blip the throttle trigger, which will be engaged when starting . MS 311, MS 391 7 Do not drop start the chain saw on the front handle in an open area. Hold the rear handle of you to...the saw . Maintain good balance and secure footing. Pull the starting your power tool and make proper adjustments and repairs. When the engine is started on the handles while you cannot set the correct idle speed, have your STIHL dealer check your chain saw allows you and all other solid surface...
...and controlling the power tool Always hold the unit firmly with the running , immediately blip the throttle trigger, which will be engaged when starting . MS 311, MS 391 7 Do not drop start the chain saw on the front handle in an open area. Hold the rear handle of you to...the saw . Maintain good balance and secure footing. Pull the starting your power tool and make proper adjustments and repairs. When the engine is started on the handles while you cannot set the correct idle speed, have your STIHL dealer check your chain saw allows you and all other solid surface...
Product Instruction Manual
Page 11
... of dust and other object. Your chain saw , never work area, even when starting. Control dust at or near the ambient (background) level, the operator and any dust raised by NIOSH/MSHA for the type of cut while bucking. MS 311, MS 391 9 Warning! To reduce the risk of a cut or kerf, go out...
... of dust and other object. Your chain saw , never work area, even when starting. Control dust at or near the ambient (background) level, the operator and any dust raised by NIOSH/MSHA for the type of cut while bucking. MS 311, MS 391 9 Warning! To reduce the risk of a cut or kerf, go out...
Product Instruction Manual
Page 12
If you might be cutting asbestos, immediately contact your power tool using the starting throttle lock, as rocks, fences, nails and the like. Do not operate your employer or a local OSHA representative. move for prying or shoveling away limbs, .... Warning! The muffler and other objects. Warning! Let the engine cool down . the trunk of the engine speed. Never modify your STIHL servicing dealer only. 10 MS 311, MS 391 Have your STIHL servicing dealer. The use could cause an increase in the feel of fire and burn injury. Warning! It is released (flywheel effect...
If you might be cutting asbestos, immediately contact your power tool using the starting throttle lock, as rocks, fences, nails and the like. Do not operate your employer or a local OSHA representative. move for prying or shoveling away limbs, .... Warning! The muffler and other objects. Warning! Let the engine cool down . the trunk of the engine speed. Never modify your STIHL servicing dealer only. 10 MS 311, MS 391 Have your STIHL servicing dealer. The use could cause an increase in the feel of fire and burn injury. Warning! It is released (flywheel effect...
Product Instruction Manual
Page 17
... is pinched, caught or encounters a foreign object in the wood. Pull-in 1. To avoid pull-in frequently occurs when the bumper spike of fall. Always start a cut more than one log at full throttle. 7. Do not cut with the chain rotating at full speed and the bumper spike in contact with... the side of the cutting path of the chain may drive the saw rapidly straight back toward the operator and may easily catch the chain. 4. MS 311, MS 391 15
... is pinched, caught or encounters a foreign object in the wood. Pull-in 1. To avoid pull-in frequently occurs when the bumper spike of fall. Always start a cut more than one log at full throttle. 7. Do not cut with the chain rotating at full speed and the bumper spike in contact with... the side of the cutting path of the chain may drive the saw rapidly straight back toward the operator and may easily catch the chain. 4. MS 311, MS 391 15
Product Instruction Manual
Page 22
In order to reduce the risk of the guide bar. Warning! Do not work with a chain saw , you are poorly supported. Start limbing by leaving the lower limbs to the operator. Be extremely cautious when cutting limbs or logs under tension (spring poles). Begin the plunge cut ... the tree at an angle. English The plunge cut , follow the sectioning method described previously. Limbing Limbing is cutting a log into sections. 001BA033 KN 20 MS 311, MS 391 Cut until the depth of the kerf is made with the guide bar nose. Warning! To make the felling cut is about to fall...
In order to reduce the risk of the guide bar. Warning! Do not work with a chain saw , you are poorly supported. Start limbing by leaving the lower limbs to the operator. Be extremely cautious when cutting limbs or logs under tension (spring poles). Begin the plunge cut ... the tree at an angle. English The plunge cut , follow the sectioning method described previously. Limbing Limbing is cutting a log into sections. 001BA033 KN 20 MS 311, MS 391 Cut until the depth of the kerf is made with the guide bar nose. Warning! To make the felling cut is about to fall...
Product Instruction Manual
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... saw pinches, stop the engine and make sure that the cutting tool is extremely hazardous. Always start relieving cut (1) at compression side.Then make a warranty claim for a component which has not ... and roots are used to remove the flywheel or if an improper tool is used , STIHL may cause serious or fatal injury. Warning! Only properly trained professionals should be performed by ...systems may be cut (2) at a time. However, if you make bucking cut very carefully. MS 311, MS 391 21 Make sure the log will not roll downhill. Shattered wood should work or cleaning the...
... saw pinches, stop the engine and make sure that the cutting tool is extremely hazardous. Always start relieving cut (1) at compression side.Then make a warranty claim for a component which has not ... and roots are used to remove the flywheel or if an improper tool is used , STIHL may cause serious or fatal injury. Warning! Only properly trained professionals should be performed by ...systems may be cut (2) at a time. However, if you make bucking cut very carefully. MS 311, MS 391 21 Make sure the log will not roll downhill. Shattered wood should work or cleaning the...
Product Instruction Manual
Page 25
... be damaged beyond repair after a short period of the saw chain (1) must match. - N Fit the chain - start at the bar nose. 143BA003 KN MS 311, MS 391 23 A cutting attachment consists of operation. 1 2 N Turn the screw (1) counterclockwise until there is designed to ...protect your hands from the sharp cutters. The cutting attachment that comes standard is an audible click - The pitch (t) of the guide bar (3). Cutting Attachment STIHL...
... be damaged beyond repair after a short period of the saw chain (1) must match. - N Fit the chain - start at the bar nose. 143BA003 KN MS 311, MS 391 23 A cutting attachment consists of operation. 1 2 N Turn the screw (1) counterclockwise until there is designed to ...protect your hands from the sharp cutters. The cutting attachment that comes standard is an audible click - The pitch (t) of the guide bar (3). Cutting Attachment STIHL...
Product Instruction Manual
Page 30
... be activated also by the left hand is pushed toward the front handle. when starting cutting work . Always disengage chain brake before accelerating engine and before starting work . The hand guard is activated by inertia in the tank before starting - Never operate your left hand - The only exception to this rule is designed... without chain lubrication. If the chain runs dry, the whole cutting attachment will quickly damage the powerhead and chain drive (clutch, chain brake). during a 28 MS 311, MS 391 see "Checking Chain Tension". -
... be activated also by the left hand is pushed toward the front handle. when starting cutting work . Always disengage chain brake before accelerating engine and before starting work . The hand guard is activated by inertia in the tank before starting - Never operate your left hand - The only exception to this rule is designed... without chain lubrication. If the chain runs dry, the whole cutting attachment will quickly damage the powerhead and chain drive (clutch, chain brake). during a 28 MS 311, MS 391 see "Checking Chain Tension". -
Product Instruction Manual
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... it serviced and maintained regularly by trained personnel, such as your STIHL servicing dealer, at idle speed, engage the chain brake (push hand...chain brake Winter Operation Pre-heat carburetor English At temperatures below +50 °F (+10 °C) 0001BA002 KN Before starting work: Run engine at the following intervals: Full-time usage: Part-time usage: Occasional usage: every 3 months every...The hand guard must not rotate. the saw chain is necessary to overheating 0001BA003 KN MS 311, MS 391 29 the chain must be free from around the cylinder and circulates around the ...
... it serviced and maintained regularly by trained personnel, such as your STIHL servicing dealer, at idle speed, engage the chain brake (push hand...chain brake Winter Operation Pre-heat carburetor English At temperatures below +50 °F (+10 °C) 0001BA002 KN Before starting work: Run engine at the following intervals: Full-time usage: Part-time usage: Occasional usage: every 3 months every...The hand guard must not rotate. the saw chain is necessary to overheating 0001BA003 KN MS 311, MS 391 29 the chain must be free from around the cylinder and circulates around the ...
Product Instruction Manual
Page 32
... engine trouble occurs, first check whether use the "cover plate mounting kit" (special accessory). When the cover plate is for starting the cold engine 30 MS 311, MS 391 engine is running or can start Warm start l - English At temperatures below +14 °F (-10 °C) Attach cover plate Under extreme winter conditions (temperatures below +14 °...
... engine trouble occurs, first check whether use the "cover plate mounting kit" (special accessory). When the cover plate is for starting the cold engine 30 MS 311, MS 391 engine is running or can start Warm start l - English At temperatures below +14 °F (-10 °C) Attach cover plate Under extreme winter conditions (temperatures below +14 °...
Product Instruction Manual
Page 33
.... when the engine has turned over for approx. the saw firmly against the ground - after ventilation of throttle after starting acceleration n - thumb wrapped around the handlebar MS 311, MS 391 31 thumb wrapped around the handlebar N Place your right foot through the rear handle N clamp the rear handle between the knees or thighs N grip...
.... when the engine has turned over for approx. the saw firmly against the ground - after ventilation of throttle after starting acceleration n - thumb wrapped around the handlebar MS 311, MS 391 31 thumb wrapped around the handlebar N Place your right foot through the rear handle N clamp the rear handle between the knees or thighs N grip...
Product Instruction Manual
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...slowly until you feel it a brisk strong pull - risk of the chain saw. 32 0 1 42 3 N Push the hand guard (1) forwards - Starting the chain saw MS 311, MS 391 the saw When the engine has turned over for the first time STOP 1 0 0001BA019 KN 0001BA022 KN N with machines without an additional manual... fuel pump, it may be necessary to pull the starter rope several times - one minute) N Hold and start the chain saw...
...slowly until you feel it a brisk strong pull - risk of the chain saw. 32 0 1 42 3 N Push the hand guard (1) forwards - Starting the chain saw MS 311, MS 391 the saw When the engine has turned over for the first time STOP 1 0 0001BA019 KN 0001BA022 KN N with machines without an additional manual... fuel pump, it may be necessary to pull the starter rope several times - one minute) N Hold and start the chain saw...
Product Instruction Manual
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... necessary, configure for use. see "Spark plug" N Set the Master Control lever to the stop position 0 - the chain saw chain is cold MS 311, MS 391 33 Open the throttle only when the chain brake is running STOP 1 0 2 N Press the throttle trigger interlock and blip the throttle trigger...Restart the engine English N Move the Master Control lever to the stop position 0 N Remove the spark plug - If the engine does not start N Pull the hand guard toward the handlebar The chain brake is ready for winter operation, see "Winter Operation" Switch off . afterwards simultaneously...
... necessary, configure for use. see "Spark plug" N Set the Master Control lever to the stop position 0 - the chain saw chain is cold MS 311, MS 391 33 Open the throttle only when the chain brake is running STOP 1 0 2 N Press the throttle trigger interlock and blip the throttle trigger...Restart the engine English N Move the Master Control lever to the stop position 0 N Remove the spark plug - If the engine does not start N Pull the hand guard toward the handlebar The chain brake is ready for winter operation, see "Winter Operation" Switch off . afterwards simultaneously...
Product Instruction Manual
Page 41
...: N Too much engine oil in operation. These factors cause deposits to the stop position 0 N Push the hand guard forwards - see "Specifications". see "Starting / Stopping the Engine". Fit a new spark plug after approx. 100 operating hours or earlier if the electrodes are badly eroded. 4903BA002 KN 000BA002 KN 2...conditions (mostly at part load. Fit a new spark plug after approx. 100 operating hours or earlier if the electrodes are badly eroded. MS 311, MS 391 39 N Pull off the spark plug boot N Unscrew spark plug Remove the spark plug N Move the Master Control lever to ...
...: N Too much engine oil in operation. These factors cause deposits to the stop position 0 N Push the hand guard forwards - see "Specifications". see "Starting / Stopping the Engine". Fit a new spark plug after approx. 100 operating hours or earlier if the electrodes are badly eroded. 4903BA002 KN 000BA002 KN 2...conditions (mostly at part load. Fit a new spark plug after approx. 100 operating hours or earlier if the electrodes are badly eroded. MS 311, MS 391 39 N Pull off the spark plug boot N Unscrew spark plug Remove the spark plug N Move the Master Control lever to ...
Product Instruction Manual
Page 49
If you only use the saw occasionally, extend the intervals accordingly. English before starting work after finishing work area, resinrich wood, tropical wood, etc.), shorten the specified intervals accordingly. Maintenance and Care The following intervals apply to normal operating ... X Check (wear, damage) X Guide bar Clean and turn over Deburr X X Replace X X Chain sprocket Check X Air filter Clean Replace X X X Antivibration elements Check X Have replaced by dealer1) X X MS 311, MS 391 47
If you only use the saw occasionally, extend the intervals accordingly. English before starting work after finishing work area, resinrich wood, tropical wood, etc.), shorten the specified intervals accordingly. Maintenance and Care The following intervals apply to normal operating ... X Check (wear, damage) X Guide bar Clean and turn over Deburr X X Replace X X Chain sprocket Check X Air filter Clean Replace X X X Antivibration elements Check X Have replaced by dealer1) X X MS 311, MS 391 47
Product Instruction Manual
Page 50
before starting work after finishing work area, resinrich wood, tropical wood, etc.), shorten the specified intervals accordingly. chain must not rotate X X Readjust idle Spark Plug Readjust ... operating, then every 150 hours Check X Chain catcher Replace Safety labels Replace 1) STIHL recommends a STIHL servicing dealer. 2) see chapter on "Chain Brake" 3) Firmly tighten down the cylinder base screws of operation. 4) not in all versions, market-specific X X X X X X X X X X 48 MS 311, MS 391 English The following intervals apply to 20 hours of professional saws (3.4 kW...
before starting work after finishing work area, resinrich wood, tropical wood, etc.), shorten the specified intervals accordingly. chain must not rotate X X Readjust idle Spark Plug Readjust ... operating, then every 150 hours Check X Chain catcher Replace Safety labels Replace 1) STIHL recommends a STIHL servicing dealer. 2) see chapter on "Chain Brake" 3) Firmly tighten down the cylinder base screws of operation. 4) not in all versions, market-specific X X X X X X X X X X 48 MS 311, MS 391 English The following intervals apply to 20 hours of professional saws (3.4 kW...
Product Instruction Manual
Page 52
...the chain if it breaks or comes off the handlebar. when activated. 6 Chain Brake A device to the operator's hands. (not illustrated) 50 MS 311, MS 391 Guide Bar Nose The exposed end of the guide bar. (not illustrated, see chapter "Tensioning the Saw Chain") Clutch Couples engine to chain ... of cutters, tie straps and drive links. 14 Oil Filler Cap For closing the fuel tank. 20 Master Control Lever Lever for choke control, starting easier - English Definitions 1 Shroud Lock Lock for the right hand, located at the rear of operator contact by inertia. 7 Chain Sprocket The...
...the chain if it breaks or comes off the handlebar. when activated. 6 Chain Brake A device to the operator's hands. (not illustrated) 50 MS 311, MS 391 Guide Bar Nose The exposed end of the guide bar. (not illustrated, see chapter "Tensioning the Saw Chain") Clutch Couples engine to chain ... of cutters, tie straps and drive links. 14 Oil Filler Cap For closing the fuel tank. 20 Master Control Lever Lever for choke control, starting easier - English Definitions 1 Shroud Lock Lock for the right hand, located at the rear of operator contact by inertia. 7 Chain Sprocket The...
