Product Instruction Manual
Page 2
...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... 2 Safety Precautions and Working Techniques 3 Mounting the Bar and Chain 26 Tensioning the Saw Chain 27 Checking Chain Tension 28 Fuel 28 Fueling 29 Chain Lubricant 30 Filling Chain Oil Tank 31 Checking Chain Lubrication 31 Chain Brake 32 Winter Operation 33 Information Before You Start...
...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... 2 Safety Precautions and Working Techniques 3 Mounting the Bar and Chain 26 Tensioning the Saw Chain 27 Checking Chain Tension 28 Fuel 28 Fueling 29 Chain Lubricant 30 Filling Chain Oil Tank 31 Checking Chain Lubrication 31 Chain Brake 32 Winter Operation 33 Information Before You Start...
Product Instruction Manual
Page 6
...unusually high loads for use may be extremely dangerous. Only attachments supplied by STIHL or expressly approved by your hearing. Always switch off the engine, and fit the chain guard (scabbard) over the chain and guide bar before continuing work. Wear an approved safety hard hat to your goggles ...head. Do not continue operating this power tool in a vehicle, properly secure it is tight (no leaks) and that you . 001BA115 KN MS 290, MS 310, MS 390 5 To reduce the risk of injury from your body and the cutting attachment behind you also wear a face shield or face screen ...
...unusually high loads for use may be extremely dangerous. Only attachments supplied by STIHL or expressly approved by your hearing. Always switch off the engine, and fit the chain guard (scabbard) over the chain and guide bar before continuing work. Wear an approved safety hard hat to your goggles ...head. Do not continue operating this power tool in a vehicle, properly secure it is tight (no leaks) and that you . 001BA115 KN MS 290, MS 310, MS 390 5 To reduce the risk of injury from your body and the cutting attachment behind you also wear a face shield or face screen ...
Product Instruction Manual
Page 8
...adjusted or maintained, or not completely or securely assembled. !Warning! a loose boot may lose control of the bar and chain follow the procedure described in the instruction manual and the section "Kickback" and the "ANSI B 175.1-2000 ... Bar and Chain" of the instruction manual. English / USA Before Starting Take off the chain guard (scabbard) and inspect the saw without assistance. Always check your manual. Start and operate your power tool. Never start . STIHL Oilomatic chain, guide bar ...you to modify the controls or safety devices. !Warning! MS 290, MS 310, MS 390 7
...adjusted or maintained, or not completely or securely assembled. !Warning! a loose boot may lose control of the bar and chain follow the procedure described in the instruction manual and the section "Kickback" and the "ANSI B 175.1-2000 ... Bar and Chain" of the instruction manual. English / USA Before Starting Take off the chain guard (scabbard) and inspect the saw without assistance. Always check your manual. Start and operate your power tool. Never start . STIHL Oilomatic chain, guide bar ...you to modify the controls or safety devices. !Warning! MS 290, MS 310, MS 390 7
Product Instruction Manual
Page 9
...allows you to start the chainsaw when the guide bar is in a locked (straight) position. Be sure that the guide bar and chain are clear of the saw firmly with your hand or fingers and may damage the starter mechanism. 8 MS 290, MS 310, MS 390 When you feel a definite resistance and then... give it may result in injury to your left hand. Make sure the chain brake is engaged, grip the front handle of the bar touches any object, it a brisk, strong pull. ...
...allows you to start the chainsaw when the guide bar is in a locked (straight) position. Be sure that the guide bar and chain are clear of the saw firmly with your hand or fingers and may damage the starter mechanism. 8 MS 290, MS 310, MS 390 When you feel a definite resistance and then... give it may result in injury to your left hand. Make sure the chain brake is engaged, grip the front handle of the bar touches any object, it a brisk, strong pull. ...
Product Instruction Manual
Page 10
...in this position, you cannot set the correct idle speed, have your STIHL dealer check your fingers and thumbs around the handles. Wrap your power ...and ditches to avoid stumbling. To reduce the risk of serious or fatal injury to prevent the bar and chain from loss of control and/or contact with both hands on the handles while you to control ...stormy or rainfall is increased danger of personal injury from the cutting tool. There is heavy. 001BA087 LÄ MS 290, MS 310, MS 390 9 For directions on slopes or uneven ground. !Warning! It is dangerous because the operator may lose...
...in this position, you cannot set the correct idle speed, have your STIHL dealer check your fingers and thumbs around the handles. Wrap your power ...and ditches to avoid stumbling. To reduce the risk of serious or fatal injury to prevent the bar and chain from loss of control and/or contact with both hands on the handles while you to control ...stormy or rainfall is increased danger of personal injury from the cutting tool. There is heavy. 001BA087 LÄ MS 290, MS 310, MS 390 9 For directions on slopes or uneven ground. !Warning! It is dangerous because the operator may lose...
Product Instruction Manual
Page 11
... the machine above shoulder height. The pressure may cause the bar and rotating chain to pop out of the cut while bucking. Do not... is needed. !Warning! Even though bystanders should be colorless and odorless. carbon monoxide) may cause the moving chain to cause respiratory problems, cancer, birth defects, or other reproductive harm. To reduce the risk of a cut...!Warning! Operate it under good visibility and daylight conditions only. If exhaust fumes become concentrated. 10 MS 290, MS 310, MS 390 To reduce the risk of injury from loss of control, never work on the saw when ...
... the machine above shoulder height. The pressure may cause the bar and rotating chain to pop out of the cut while bucking. Do not... is needed. !Warning! Even though bystanders should be colorless and odorless. carbon monoxide) may cause the moving chain to cause respiratory problems, cancer, birth defects, or other reproductive harm. To reduce the risk of a cut...!Warning! Operate it under good visibility and daylight conditions only. If exhaust fumes become concentrated. 10 MS 290, MS 310, MS 390 To reduce the risk of injury from loss of control, never work on the saw when ...
Product Instruction Manual
Page 14
...175.1-2000: MS 290, MS 310, MS 390 13 English / USA Reactive forces including kickback !Warning! Many factors influence the occurrence and force of the chain and other factors. The powerful force used to begin a plunge or boring cut wood can cause serious personal injury. STIHL recommends the use... or is suddenly stopped by contact with section 5.11 of control. Some STIHL bar and chain types are : - These include chain speed, the speed at which , in loss of control, which the bar and chain contact the object, the angle of contact, the condition of the kickback reaction...
...175.1-2000: MS 290, MS 310, MS 390 13 English / USA Reactive forces including kickback !Warning! Many factors influence the occurrence and force of the chain and other factors. The powerful force used to begin a plunge or boring cut wood can cause serious personal injury. STIHL recommends the use... or is suddenly stopped by contact with section 5.11 of control. Some STIHL bar and chain types are : - These include chain speed, the speed at which , in loss of control, which the bar and chain contact the object, the angle of contact, the condition of the kickback reaction...
Product Instruction Manual
Page 15
..., meet a 45° computer derived kickback angle when equipped with certain cutting attachments, - bar and chain combinations listed as a chain brake, low kickback chain, reduced kickback bar, etc. Devices for use on your powerhead with at least one device designed to reduce the...STIHL servicing dealer. The Quickstop chain brake is called a Quickstop chain brake. English / USA a) Saws with § 5.11 of ANSI B 175.12000 does not automatically mean that may occur in real life cutting situations. b) Saws with at least two devices to your STIHL chainsaw. 14 MS 290, MS 310, MS...
..., meet a 45° computer derived kickback angle when equipped with certain cutting attachments, - bar and chain combinations listed as a chain brake, low kickback chain, reduced kickback bar, etc. Devices for use on your powerhead with at least one device designed to reduce the...STIHL servicing dealer. The Quickstop chain brake is called a Quickstop chain brake. English / USA a) Saws with § 5.11 of ANSI B 175.12000 does not automatically mean that may occur in real life cutting situations. b) Saws with at least two devices to your STIHL chainsaw. 14 MS 290, MS 310, MS...
Product Instruction Manual
Page 16
... of the hand guard on newer STIHL chainsaws can cause excessive heat, leading to severe damage of your chainsaw without hand contact. Never run the chainsaw above at all. !Warning! If clutch slippage in excess of your body. The chain brake on a saw equipped with ...instruction manual. In a kickback situation this contact will deactivate the chain brake. !Warning! In addition, there must be enough distance between the bar and the operator to reduce the risk of these Safety Precautions. MS 290, MS 310, MS 390 15 If the kickback forces are designed to ensure that...
... of the hand guard on newer STIHL chainsaws can cause excessive heat, leading to severe damage of your chainsaw without hand contact. Never run the chainsaw above at all. !Warning! If clutch slippage in excess of your body. The chain brake on a saw equipped with ...instruction manual. In a kickback situation this contact will deactivate the chain brake. !Warning! In addition, there must be enough distance between the bar and the operator to reduce the risk of these Safety Precautions. MS 290, MS 310, MS 390 15 If the kickback forces are designed to ensure that...
Product Instruction Manual
Page 17
... safety precautions to help you identify the STIHL reduced kickback bars and low kickback chains. Products with yellow decals or labels are for users with extraordinary cutting needs and experience and specialized training for both experienced and inexperienced chainsaw users. Check with a properly sharpened chain. 16 MS 290, MS 310, MS 390 Always cut with your powerhead with...
... safety precautions to help you identify the STIHL reduced kickback bars and low kickback chains. Products with yellow decals or labels are for users with extraordinary cutting needs and experience and specialized training for both experienced and inexperienced chainsaw users. Check with a properly sharpened chain. 16 MS 290, MS 310, MS 390 Always cut with your powerhead with...
Product Instruction Manual
Page 18
...cause the cut . 001BA037 KN MS 290, MS 310, MS 390 17 Always start a cut limbs with these bars may easily catch the chain, be less effective in 1. Cut only one log at full throttle. 7. Don't let go. 2. Be alert for shifting of the guide bar contact any STIHL chainsaw. Stand to avoid kickback situations... the cutting path of the guide bar nose at all times. 3. Do not mount a bow guide on the bottom of the saw is not held securely against the tree or limb and when the chain is increased with STIHL green labeled low kickback chains. !Warning! Be especially careful near...
...cause the cut . 001BA037 KN MS 290, MS 310, MS 390 17 Always start a cut limbs with these bars may easily catch the chain, be less effective in 1. Cut only one log at full throttle. 7. Don't let go. 2. Be alert for shifting of the guide bar contact any STIHL chainsaw. Stand to avoid kickback situations... the cutting path of the guide bar nose at all times. 3. Do not mount a bow guide on the bottom of the saw is not held securely against the tree or limb and when the chain is increased with STIHL green labeled low kickback chains. !Warning! Be especially careful near...
Product Instruction Manual
Page 19
...and fall , e.g. Also look for these conditions prior to the operator or bystanders. Do not twist the saw when withdrawing the bar from the nearest person. There are leaning or otherwise under tension. wind direction and speed, lean of fall on the uphill side...001BA088 LÄ Cutting Techniques Felling Felling is pinched, caught or encounters a foreign object in the wood. The reaction of the chain may drown any warning call. 18 MS 290, MS 310, MS 390 Felling Instructions: 1 1/2 1 21/2 When felling, maintain a distance of your engine may drive the saw control. Inform...
...and fall , e.g. Also look for these conditions prior to the operator or bystanders. Do not twist the saw when withdrawing the bar from the nearest person. There are leaning or otherwise under tension. wind direction and speed, lean of fall on the uphill side...001BA088 LÄ Cutting Techniques Felling Felling is pinched, caught or encounters a foreign object in the wood. The reaction of the chain may drown any warning call. 18 MS 290, MS 310, MS 390 Felling Instructions: 1 1/2 1 21/2 When felling, maintain a distance of your engine may drive the saw control. Inform...
Product Instruction Manual
Page 22
The bumper spike rolls against the trunk. you could lose control of the direction of the bar contacts a wedge, it may cause kickback. Drive wedges into the felling cut where necessary to control the fall . E English / USA 001BA145 KN 001BA147 KN E = Hinge : ... directly behind the location of wood or plastic - Felling cut for small diameter trees: simple fan cut through the hinge - MS 290, MS 310, MS 390 21 never steel, which can damage the chain. Wedges should be of the intended hinge and pivot the saw around this point only as far as the hinge. E If...
The bumper spike rolls against the trunk. you could lose control of the direction of the bar contacts a wedge, it may cause kickback. Drive wedges into the felling cut where necessary to control the fall . E English / USA 001BA145 KN 001BA147 KN E = Hinge : ... directly behind the location of wood or plastic - Felling cut for small diameter trees: simple fan cut through the hinge - MS 290, MS 310, MS 390 21 never steel, which can damage the chain. Wedges should be of the intended hinge and pivot the saw around this point only as far as the hinge. E If...
Product Instruction Manual
Page 26
...flywheel to hold the flywheel in the boot may create arcing that the chain is missing or damaged. MS 290, MS 310, MS 390 25 Never test the ignition system with the spark plug boot removed... under which has not been serviced or maintained properly or if nonapproved replacement parts were used, STIHL may deny coverage. !Warning! If your muffler was equipped with a removed spark plug, since... improper tools are always clean and in hot or dry weather. Keep the chain, bar and sprocket clean; Keep the chain at proper tension. Always stop the engine and make sure it must be ...
...flywheel to hold the flywheel in the boot may create arcing that the chain is missing or damaged. MS 290, MS 310, MS 390 25 Never test the ignition system with the spark plug boot removed... under which has not been serviced or maintained properly or if nonapproved replacement parts were used, STIHL may deny coverage. !Warning! If your muffler was equipped with a removed spark plug, since... improper tools are always clean and in hot or dry weather. Keep the chain, bar and sprocket clean; Keep the chain at proper tension. Always stop the engine and make sure it must be ...
Product Instruction Manual
Page 27
... left end of housing slot. 001BA107 KN 26 MS 290, MS 310, MS 390 143BA034 KN English / USA Mounting the Bar and Chain For the proper and effective operation of the chain brake, the brake band and clutch drum must match the bar groove width (3). For these reasons, each STIHL chainsaw should also be returned immediately for longer than...
... left end of housing slot. 001BA107 KN 26 MS 290, MS 310, MS 390 143BA034 KN English / USA Mounting the Bar and Chain For the proper and effective operation of the chain brake, the brake band and clutch drum must match the bar groove width (3). For these reasons, each STIHL chainsaw should also be returned immediately for longer than...
Product Instruction Manual
Page 28
...(6) toward front handle. start at the bar nose. 143BA003 KN : Fit the guide bar over sprocket (9) at the same time. : Now turn tensioning screw (1) clockwise until there is very little chain sag on the underside of the bar. : While still holding the bar nose up, tighten down the nuts firmly...of bar must point to "Tensioning the Saw Chain". and the drive link tangs are located in use screwdriver to turn tensioning screw (10) clockwise until chain fits snugly against the underside of the bar - cutting edges on the nuts only fingertight. : Go to right - MS 290, MS 310, MS 390 ...
...(6) toward front handle. start at the bar nose. 143BA003 KN : Fit the guide bar over sprocket (9) at the same time. : Now turn tensioning screw (1) clockwise until there is very little chain sag on the underside of the bar. : While still holding the bar nose up, tighten down the nuts firmly...of bar must point to "Tensioning the Saw Chain". and the drive link tangs are located in use screwdriver to turn tensioning screw (10) clockwise until chain fits snugly against the underside of the bar - cutting edges on the nuts only fingertight. : Go to right - MS 290, MS 310, MS 390 ...
Product Instruction Manual
Page 29
...the engine. : Wear work gloves. : Chain must still be possible to pull the chain along the bar by hand. : If necessary, retension the chain. A new chain has to operate on unleaded gasoline and the STIHL twostroke engine oil at the pump, first remove...turn, increases the risk of piston seizure and damage to avoid any moisture getting into the mixture. Check chain tension frequently - The canister should be retensioned more often than one that state they are designed for ..., fuel lines, etc.), but magnesium castings and catalytic converters as necessary. 28 MS 290, MS 310, MS 390
...the engine. : Wear work gloves. : Chain must still be possible to pull the chain along the bar by hand. : If necessary, retension the chain. A new chain has to operate on unleaded gasoline and the STIHL twostroke engine oil at the pump, first remove...turn, increases the risk of piston seizure and damage to avoid any moisture getting into the mixture. Check chain tension frequently - The canister should be retensioned more often than one that state they are designed for ..., fuel lines, etc.), but magnesium castings and catalytic converters as necessary. 28 MS 290, MS 310, MS 390
Product Instruction Manual
Page 31
.... 165BA003 KN For automatic and reliable lubrication of the chain drive, clutch and chain. The service life of the chain and guide bar depends on the grip does not engage the recess in the area of the chain and guide bar - It is not properly seated and tightened and you...to aging (e.g. If the grip does not lie completely flush with non-fling additive or the rapidly biodegradable STIHL BioPlus is recommended. use only a specially formulated chain lubricant. 30 MS 290, MS 310, MS 390 This results in hard deposits that are difficult to remove, especially in the filler neck, the cap ...
.... 165BA003 KN For automatic and reliable lubrication of the chain drive, clutch and chain. The service life of the chain and guide bar depends on the grip does not engage the recess in the area of the chain and guide bar - It is not properly seated and tightened and you...to aging (e.g. If the grip does not lie completely flush with non-fling additive or the rapidly biodegradable STIHL BioPlus is recommended. use only a specially formulated chain lubricant. 30 MS 290, MS 310, MS 390 This results in hard deposits that are difficult to remove, especially in the filler neck, the cap ...
Product Instruction Manual
Page 33
... situations. 143BA011 KN 143BA012 KN Releasing the chain brake : Pull the hand guard back toward bar nose). at idle speed, engage the chain brake (push hand guard toward the front handle. Accelerate up to be free from dirt and move freely. 32 MS 290, MS 310, MS 390 Always disengage chain brake before accelerating engine and before starting...
... situations. 143BA011 KN 143BA012 KN Releasing the chain brake : Pull the hand guard back toward bar nose). at idle speed, engage the chain brake (push hand guard toward the front handle. Accelerate up to be free from dirt and move freely. 32 MS 290, MS 310, MS 390 Always disengage chain brake before accelerating engine and before starting...
Product Instruction Manual
Page 58
... of this specific powerhead, or has been designated as "low kickback" saw chain unless it has been designated as meeting the ANSI § 5.11 requirements on page 16 of this Manual, ask your STIHL dealer for this powerhead are: STIHL yellow-labeled bars: MS 290 For 0.325" (8.25 mm) and 3/8" (9.32 mm) pitch: Rollomatic "S" with sprocket...
... of this specific powerhead, or has been designated as "low kickback" saw chain unless it has been designated as meeting the ANSI § 5.11 requirements on page 16 of this Manual, ask your STIHL dealer for this powerhead are: STIHL yellow-labeled bars: MS 290 For 0.325" (8.25 mm) and 3/8" (9.32 mm) pitch: Rollomatic "S" with sprocket...