Product Instruction Manual
Page 2
... Machine 46 Checking and Replacing Chain Sprocket 47 Maintaining and Sharpening Saw Chain 48 Maintenance Chart 52 Parts and Controls 54 Specifications 56 Special Accessories 58 Ordering Spare Parts 58 Maintenance and Repairs 58 STIHl MS 290, MS 310, MS 390 STIHL Incorporated Federal Emission Control Warranty Statement 59 Trademarks 61 Allow only persons who understand this Manual...
... Machine 46 Checking and Replacing Chain Sprocket 47 Maintaining and Sharpening Saw Chain 48 Maintenance Chart 52 Parts and Controls 54 Specifications 56 Special Accessories 58 Ordering Spare Parts 58 Maintenance and Repairs 58 STIHl MS 290, MS 310, MS 390 STIHL Incorporated Federal Emission Control Warranty Statement 59 Trademarks 61 Allow only persons who understand this Manual...
Product Instruction Manual
Page 4
... forces, including kickback, can be hazardous.The saw chain has many sharp cutters. Have your STIHL dealer show you how to the OSHA regulations for a description of the controls and the function of the parts of all applicable federal, state and local safety regulations, standards and ordinances. When using it ... power tool can reach 67 mph (30 m/s). the use may result in an accident or damage to reduce the risk of the saw 3. MS 290, MS 310, MS 390 3 If the cutters contact your flesh, they will cut you, even if the chain is important that unauthorized persons do not use it...
... forces, including kickback, can be hazardous.The saw chain has many sharp cutters. Have your STIHL dealer show you how to the OSHA regulations for a description of the controls and the function of the parts of all applicable federal, state and local safety regulations, standards and ordinances. When using it ... power tool can reach 67 mph (30 m/s). the use may result in an accident or damage to reduce the risk of the saw 3. MS 290, MS 310, MS 390 3 If the cutters contact your flesh, they will cut you, even if the chain is important that unauthorized persons do not use it...
Product Instruction Manual
Page 5
Wear gloves and keep your hands. - Keep the saw chain sharp. The ignition system of the STIHL unit produces an electromagnetic field of whitefinger disease and carpal tunnel syndrome, please note the following: - A power tool with loose... - These conditions reduce the hand's ability to help protect your legs from contact with some STIHL powerheads, are recommended. 4 MS 290, MS 310, MS 390 Most STIHL power tools are available on branches, brush or the moving parts of cut retardant material. An AV system is above symptoms appear, seek medical advice immediately. !...
Wear gloves and keep your hands. - Keep the saw chain sharp. The ignition system of the STIHL unit produces an electromagnetic field of whitefinger disease and carpal tunnel syndrome, please note the following: - A power tool with loose... - These conditions reduce the hand's ability to help protect your legs from contact with some STIHL powerheads, are recommended. 4 MS 290, MS 310, MS 390 Most STIHL power tools are available on branches, brush or the moving parts of cut retardant material. An AV system is above symptoms appear, seek medical advice immediately. !...
Product Instruction Manual
Page 6
... that the controls and safety devices are authorized. To reduce the risk of injury from your hands. STIHL offers a wide range of the power tool parts see the chapter on "Main Parts and Controls." !Warning! heavy impact or a fall), always check that the fuel system is balanced horizontally... by STIHL for which it is in good condition before transporting the power tool over longer distances. THE USE OF THE POWER TOOL Transporting the Power Tool !Warning! It may , in a manner that the machine is tight (no leaks) and that you . 001BA115 KN MS 290, MS 310, MS 390 ...
... that the controls and safety devices are authorized. To reduce the risk of injury from your hands. STIHL offers a wide range of the power tool parts see the chapter on "Main Parts and Controls." !Warning! heavy impact or a fall), always check that the fuel system is balanced horizontally... by STIHL for which it is in good condition before transporting the power tool over longer distances. THE USE OF THE POWER TOOL Transporting the Power Tool !Warning! It may , in a manner that the machine is tight (no leaks) and that you . 001BA115 KN MS 290, MS 310, MS 390 ...
Product Instruction Manual
Page 10
... reactive forces and to avoid stumbling. At correct idle speed, the cutting tool should grip the rear handle. It is heavy. 001BA087 LÄ MS 290, MS 310, MS 390 9 Even for those compact saws designed for use in wet and freezing weather (rain, snow, ice). Keep proper footing and balance at ...the unit firmly with both hands on the handles while you cannot set the correct idle speed, have your STIHL dealer check your unit with your hand or any other part of serious or fatal injury to left-handers. For directions on freshly debarked logs. Your right hand should not...
... reactive forces and to avoid stumbling. At correct idle speed, the cutting tool should grip the rear handle. It is heavy. 001BA087 LÄ MS 290, MS 310, MS 390 9 Even for those compact saws designed for use in wet and freezing weather (rain, snow, ice). Keep proper footing and balance at ...the unit firmly with both hands on the handles while you cannot set the correct idle speed, have your STIHL dealer check your unit with your hand or any other part of serious or fatal injury to left-handers. For directions on freshly debarked logs. Your right hand should not...
Product Instruction Manual
Page 13
...conventional mufflers when the engine returns to whether the buffers should always be replaced, consult your muffler serviced and repaired by a STIHL servicing dealer. 12 MS 290, MS 310, MS 390 Such use could cause an increase in the muffler. When sawing, make sure that the saw to reduce the risk... your power tool down as rapidly as to idle or is near dry brush, grass, wood chips or other parts while they may also permanently damage the engine. Some STIHL power tools are hot. !Warning! To reduce the risk of the catalytic converter. Catalytic converter !Warning! Due to...
...conventional mufflers when the engine returns to whether the buffers should always be replaced, consult your muffler serviced and repaired by a STIHL servicing dealer. 12 MS 290, MS 310, MS 390 Such use could cause an increase in the muffler. When sawing, make sure that the saw to reduce the risk... your power tool down as rapidly as to idle or is near dry brush, grass, wood chips or other parts while they may also permanently damage the engine. Some STIHL power tools are hot. !Warning! To reduce the risk of the catalytic converter. Catalytic converter !Warning! Due to...
Product Instruction Manual
Page 16
...potential contact with a Quickstop chain brake will activate a properly maintained Quickstop chain brake. See the chapter of these Safety Precautions. No Quickstop or other parts of 3 seconds has occurred, allow the motor housing to activate and stop the chain after activation, or may not activate at "Important Adjustments"). An...proceeding and check the operation of your chain brake as described in the chapter entitled "Chain Brake" of the hand guard on newer STIHL chainsaws can cause excessive heat, leading to reduce the risk of the chain brake. MS 290, MS 310, MS 390 15
...potential contact with a Quickstop chain brake will activate a properly maintained Quickstop chain brake. See the chapter of these Safety Precautions. No Quickstop or other parts of 3 seconds has occurred, allow the motor housing to activate and stop the chain after activation, or may not activate at "Important Adjustments"). An...proceeding and check the operation of your chain brake as described in the chapter entitled "Chain Brake" of the hand guard on newer STIHL chainsaws can cause excessive heat, leading to reduce the risk of the chain brake. MS 290, MS 310, MS 390 15
Product Instruction Manual
Page 23
... kerf is about the same as a pivot, reposition the saw for the next cut, keep the guide bar fully engaged in the trunk. 22 MS 290, MS 310, MS 390 When repositioning for the next cut. Cut until the depth of the guide bar. With the saw more than the length of the guide... the tree at full throttle, insert the guide bar in the kerf to open the cut. Sectioning method For the sectioning method make the first part of the guide bar and can result in toward the hinge. If the saw in the direction in which the recess is made with the...
... kerf is about the same as a pivot, reposition the saw for the next cut, keep the guide bar fully engaged in the trunk. 22 MS 290, MS 310, MS 390 When repositioning for the next cut. Cut until the depth of the guide bar. With the saw more than the length of the guide... the tree at full throttle, insert the guide bar in the kerf to open the cut. Sectioning method For the sectioning method make the first part of the guide bar and can result in toward the hinge. If the saw in the direction in which the recess is made with the...
Product Instruction Manual
Page 24
...limbing it is an extreme danger of the falling tree. Be extremely cautious and avoid contacting the log or other reason does not fall , since part of the trunk may split and come back towards the operator (barber-chairing), or the tree may be injured. Be extremely cautious when cutting ...the tree hangs or for falling limbs. !Warning! Limbing Limbing is an extreme danger of the bar. Start limbing by lifting the limb. !Warning! MS 290, MS 310, MS 390 23 If you may slip or the log may fall , withdraw the bar, shut off the ground. Seek the help of control. Do not...
...limbing it is an extreme danger of the falling tree. Be extremely cautious and avoid contacting the log or other reason does not fall , since part of the trunk may split and come back towards the operator (barber-chairing), or the tree may be injured. Be extremely cautious when cutting ...the tree hangs or for falling limbs. !Warning! Limbing Limbing is an extreme danger of the bar. Start limbing by lifting the limb. !Warning! MS 290, MS 310, MS 390 23 If you may slip or the log may fall , withdraw the bar, shut off the ground. Seek the help of control. Do not...
Product Instruction Manual
Page 26
...You can render it must be properly maintained. Do not attempt any nonroad engine repair establishment or individual. Keep the chain sharp. MS 290, MS 310, MS 390 25 Excessive wear will reduce the effectiveness of the chain brake and can spot a dull chain when easy-to-cut and ... to properly perform its function of reducing the risk of kickback and other factors. Use only identical STIHL replacement parts for the chain brake on saw if the screen is used , STIHL may cause serious or fatal injury. In order for maintenance and repair. English / USA MAINTENANCE, REPAIR ...
...You can render it must be properly maintained. Do not attempt any nonroad engine repair establishment or individual. Keep the chain sharp. MS 290, MS 310, MS 390 25 Excessive wear will reduce the effectiveness of the chain brake and can spot a dull chain when easy-to-cut and ... to properly perform its function of reducing the risk of kickback and other factors. Use only identical STIHL replacement parts for the chain brake on saw if the screen is used , STIHL may cause serious or fatal injury. In order for maintenance and repair. English / USA MAINTENANCE, REPAIR ...
Product Instruction Manual
Page 38
...139BA016 KN To shut down the engine: : Move Master Control lever to the rear. : Pull the prefilter (1) upward and out. 139BA001 KN MS 290, MS 310, MS 390 37 slot vertical. : lift off the carburetor box cover to 0. Always disengage chain brake before starting work. 143BA012 KN At very low ...outside temperatures: : Allow engine to warm up at part throttle. : Change over to winter operation if necessary - If fuel tank has been run...
...139BA016 KN To shut down the engine: : Move Master Control lever to the rear. : Pull the prefilter (1) upward and out. 139BA001 KN MS 290, MS 310, MS 390 37 slot vertical. : lift off the carburetor box cover to 0. Always disengage chain brake before starting work. 143BA012 KN At very low ...outside temperatures: : Allow engine to warm up at part throttle. : Change over to winter operation if necessary - If fuel tank has been run...
Product Instruction Manual
Page 39
...full throttle off load) for some time. Retension if necessary - see "Adjusting Carburetor". Always slacken off the bar. reassemble all moving parts have to bed in during the break-in period, the frictional resistances in use for the first three tank fillings. the chain may ...develops its maximum power after finishing work. The drive links must not come out of the bar and can damage the crankshaft and bearings. 38 MS 290, MS 310, MS 390 Retension the chain - English / USA Operating Instructions 2 : Pull off the spark plug boot (2). : Unscrew and dry off the spark...
...full throttle off load) for some time. Retension if necessary - see "Adjusting Carburetor". Always slacken off the bar. reassemble all moving parts have to bed in during the break-in period, the frictional resistances in use for the first three tank fillings. the chain may ...develops its maximum power after finishing work. The drive links must not come out of the bar and can damage the crankshaft and bearings. 38 MS 290, MS 310, MS 390 Retension the chain - English / USA Operating Instructions 2 : Pull off the spark plug boot (2). : Unscrew and dry off the spark...
Product Instruction Manual
Page 42
... inside outward. With this carburetor it out with compressed air from the factory with STIHL universal cleaner or in a clean, non-flammable cleaning solution (e.g. warm soapy water) and dry all parts of the fundamental engine parameters and components (e.g. MS 290, MS 310, MS 390 41 carburation, ignition, timing and valve or port timing) without the addition...
... inside outward. With this carburetor it out with compressed air from the factory with STIHL universal cleaner or in a clean, non-flammable cleaning solution (e.g. warm soapy water) and dry all parts of the fundamental engine parameters and components (e.g. MS 290, MS 310, MS 390 41 carburation, ignition, timing and valve or port timing) without the addition...
Product Instruction Manual
Page 44
These factors cause deposits to Using this Manual" MS 290, MS 310, MS 390 43 Wrong fuel mix (too much engine oil in operation. * see "Guide to form on power, check the spark arresting screen inside the muffler. : ... operation at high altitude A slight correction of the setting may result in trouble in the gasoline), a dirty air filter and unfavorable running conditions (mostly at part throttle etc.) affect the condition of engine damage. 1 1 1 3 2 139BA020 KN English / USA Checking the Spark Plug 000BA002 KN 139 BA021 KN If the engine is...
These factors cause deposits to Using this Manual" MS 290, MS 310, MS 390 43 Wrong fuel mix (too much engine oil in operation. * see "Guide to form on power, check the spark arresting screen inside the muffler. : ... operation at high altitude A slight correction of the setting may result in trouble in the gasoline), a dirty air filter and unfavorable running conditions (mostly at part throttle etc.) affect the condition of engine damage. 1 1 1 3 2 139BA020 KN English / USA Checking the Spark Plug 000BA002 KN 139 BA021 KN If the engine is...
Product Instruction Manual
Page 45
... and cause a fire. 23 4 : Use screwdriver or suitable pliers to start or runs poorly at part load. Fit a new spark plug after approx. 100 operating hours or earlier if the electrodes are badly.... 000BA036 TR To reduce the risk of fire and burn injury, use only spark plugs authorized by STIHL. operating at idling speed, first check the spark plug. : Remove spark plug - 133BA014 KN English...pop out and uncoil during this operation. 133BA015 KN 44 MS 290, MS 310, MS 390 see "Starting / Stopping the Engine". : Clean dirty spark plug. : Check electrode gap (A) and readjust if...
... and cause a fire. 23 4 : Use screwdriver or suitable pliers to start or runs poorly at part load. Fit a new spark plug after approx. 100 operating hours or earlier if the electrodes are badly.... 000BA036 TR To reduce the risk of fire and burn injury, use only spark plugs authorized by STIHL. operating at idling speed, first check the spark plug. : Remove spark plug - 133BA014 KN English...pop out and uncoil during this operation. 133BA015 KN 44 MS 290, MS 310, MS 390 see "Starting / Stopping the Engine". : Clean dirty spark plug. : Check electrode gap (A) and readjust if...
Product Instruction Manual
Page 47
To reduce risk of injury, wear eye and face protection and work gloves. : Use a screwdriver to carefully pry the parts of the spring out of the housing. 001BA103 KN : Lubricate the new spring with a few drops of non-resinous oil. : Place the new spring with ..., tension the rewind spring, fit the fan housing and secure in position. If the spring pops out of children and other unauthorized persons. 46 MS 290, MS 310, MS 390 STIHL BioPlus, completely fill the chain oil tank. : Store the unit in the fan housing might still be under tension and could fly apart when...
To reduce risk of injury, wear eye and face protection and work gloves. : Use a screwdriver to carefully pry the parts of the spring out of the housing. 001BA103 KN : Lubricate the new spring with a few drops of non-resinous oil. : Place the new spring with ..., tension the rewind spring, fit the fan housing and secure in position. If the spring pops out of children and other unauthorized persons. 46 MS 290, MS 310, MS 390 STIHL BioPlus, completely fill the chain oil tank. : Store the unit in the fan housing might still be under tension and could fly apart when...
Product Instruction Manual
Page 49
...Full chisel The specified angles A and B are obtained automatically if the recommended files or sharpening tools and correct settings are used. 48 MS 290, MS 310, MS 390 there is incorrectly sharpened - You must observe certain angles when resharpening the chain cutter. and in the links and damaged rivets.... : Replace any damaged or worn parts of the chain and match the new parts to chain pitch - Other files have the wrong shape ...
...Full chisel The specified angles A and B are obtained automatically if the recommended files or sharpening tools and correct settings are used. 48 MS 290, MS 310, MS 390 there is incorrectly sharpened - You must observe certain angles when resharpening the chain cutter. and in the links and damaged rivets.... : Replace any damaged or worn parts of the chain and match the new parts to chain pitch - Other files have the wrong shape ...
Product Instruction Manual
Page 52
...gauge on the chain - highest point of depth gauge must not be level with round file, flat file and filing gauge MS 290, MS 310, MS 390 51 RSC3, RMC3, PMC3, PMMC3: The upper part of the chainsaw. : After sharpening, clean the chain thoroughly, remove filings or grinding dust - The kickback tendency of ...216; Round file inch 1/4 3/8 PMN 3/8 P 0.325 3/8 0.404 (mm) mm (inch) (6.35) 4.0 (9.32) 4.0 (9.32) 4.0 (8.25) 4.8 (9.32) 5.2 (10.26) 5.5 (5/32) (5/32) (5/32) (3/16) (13/64) (7/32) Part No. 5605 772 4006 5605 772 4006 5605 772 4006 5605 772 4806 5605 772 5206 5605 772 5506 File holder...
...gauge on the chain - highest point of depth gauge must not be level with round file, flat file and filing gauge MS 290, MS 310, MS 390 51 RSC3, RMC3, PMC3, PMMC3: The upper part of the chainsaw. : After sharpening, clean the chain thoroughly, remove filings or grinding dust - The kickback tendency of ...216; Round file inch 1/4 3/8 PMN 3/8 P 0.325 3/8 0.404 (mm) mm (inch) (6.35) 4.0 (9.32) 4.0 (9.32) 4.0 (8.25) 4.8 (9.32) 5.2 (10.26) 5.5 (5/32) (5/32) (5/32) (3/16) (13/64) (7/32) Part No. 5605 772 4006 5605 772 4006 5605 772 4006 5605 772 4806 5605 772 5206 5605 772 5506 File holder...
Product Instruction Manual
Page 55
English / USA Parts and Controls 54 1 Carburetor box cover twist lock 2 Carburetor adjusting screws 3 Spark plug boot 4 Chain sprocket cover 5 Chain sprocket 6 Chain brake 7 Chain tensioner 8 Chain catcher 9 Bumper spike 10 Guide bar 11 Oilomatic saw chain # Serial number 12 Oil filler cap 13 Muffler 14 Front hand guard 15 Front handle (handlebar) 16 Decompression valve* 17 Starter grip 18 Master Control lever 19 Fuel filler cap 20 Throttle trigger 21 Throttle trigger interlock 22 Rear handle 23 Rear hand guard * see "Guide to Using this Manual" MS 290, MS 310, MS 390
English / USA Parts and Controls 54 1 Carburetor box cover twist lock 2 Carburetor adjusting screws 3 Spark plug boot 4 Chain sprocket cover 5 Chain sprocket 6 Chain brake 7 Chain tensioner 8 Chain catcher 9 Bumper spike 10 Guide bar 11 Oilomatic saw chain # Serial number 12 Oil filler cap 13 Muffler 14 Front hand guard 15 Front handle (handlebar) 16 Decompression valve* 17 Starter grip 18 Master Control lever 19 Fuel filler cap 20 Throttle trigger 21 Throttle trigger interlock 22 Rear handle 23 Rear hand guard * see "Guide to Using this Manual" MS 290, MS 310, MS 390
Product Instruction Manual
Page 59
...may be available for information regarding special accessories that may be performed only by the STlHL part number, the STIHl logo and, in this Owner's Manual. 58 MS 290, MS 310, MS 390 Please enter your product. Model Serial number Users of this unit should carry out ...only the maintenance operations described in some cases, by an authorized STIHL servicing dealer using original STIHL replacement parts. Warranty claims following repairs can...
...may be available for information regarding special accessories that may be performed only by the STlHL part number, the STIHl logo and, in this Owner's Manual. 58 MS 290, MS 310, MS 390 Please enter your product. Model Serial number Users of this unit should carry out ...only the maintenance operations described in some cases, by an authorized STIHL servicing dealer using original STIHL replacement parts. Warranty claims following repairs can...