Product Instruction Manual
Page 2
... in this Manual. !Warning! If the operating characteristics or the appearance of the instructions in Muffler 43 Checking the Spark Plug 43 Replacing Starter Rope and Rewind Spring 44 Storing the 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...
... in this Manual. !Warning! If the operating characteristics or the appearance of the instructions in Muffler 43 Checking the Spark Plug 43 Replacing Starter Rope and Rewind Spring 44 Storing the 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...
Product Instruction Manual
Page 3
... serious damage to property. Engineering improvements STIHL's philosophy is a risk of the machine. The operating and handling instructions are made from time to the environment. Such paragraphs are marked with the symbols described below: Warning where there is to continually improve all models and related applications are marked with different features. Example: Loosen the screw (1) Lever (2) ... Note or hint...
... serious damage to property. Engineering improvements STIHL's philosophy is a risk of the machine. The operating and handling instructions are made from time to the environment. Such paragraphs are marked with the symbols described below: Warning where there is to continually improve all models and related applications are marked with different features. Example: Loosen the screw (1) Lever (2) ... Note or hint...
Product Instruction Manual
Page 6
... to reduce the risk of the power tool parts see the chapter on "Main Parts and Controls." !Warning! Check in a horizontal position. Keep the hot muffler away from saw chain moving. If this tool is tight (no leaks) and that you . 001BA115 KN MS 290, MS 310, MS 390 5 In case of injury to unusually high loads for use with STIHL power tools, their hearing checked regularly. Heavyduty, nonslip gloves improve...
... to reduce the risk of the power tool parts see the chapter on "Main Parts and Controls." !Warning! Check in a horizontal position. Keep the hot muffler away from saw chain moving. If this tool is tight (no leaks) and that you . 001BA115 KN MS 290, MS 310, MS 390 5 In case of injury to unusually high loads for use with STIHL power tools, their hearing checked regularly. Heavyduty, nonslip gloves improve...
Product Instruction Manual
Page 7
... an aid in your instruction manual. 6 MS 290, MS 310, MS 390 English / USA Fuel Your STIHL power tool uses an oilgasoline mixture for fuel (see the chapter on "Fuel" of fuel spillage and fire, tighten the fuel filler cap by a spark or other ignition source, it is upright at least 10 feet (3 m) from the fueling spot before starting your machine. !Warning! Never remove the fuel filler cap while the engine is an extremely flammable...
... an aid in your instruction manual. 6 MS 290, MS 310, MS 390 English / USA Fuel Your STIHL power tool uses an oilgasoline mixture for fuel (see the chapter on "Fuel" of fuel spillage and fire, tighten the fuel filler cap by a spark or other ignition source, it is upright at least 10 feet (3 m) from the fueling spot before starting your machine. !Warning! Never remove the fuel filler cap while the engine is an extremely flammable...
Product Instruction Manual
Page 8
... injuries, start the engine at least 10 feet (3 meters) from chain contact and/or reactive forces, the chain brake must be engaged when starting , particularly the throttle trigger, throttle trigger interlock, stop switch and cutting tool. Never start . For specific starting your instruction manual. Before replacing any bar and chain, see the appropriate section of moisture, pitch, oil, fuel mix, grease or resin in gauge and pitch. it is secure - For proper assembly of the bar and chain follow...
... injuries, start the engine at least 10 feet (3 meters) from chain contact and/or reactive forces, the chain brake must be engaged when starting , particularly the throttle trigger, throttle trigger interlock, stop switch and cutting tool. Never start . For specific starting your instruction manual. Before replacing any bar and chain, see the appropriate section of moisture, pitch, oil, fuel mix, grease or resin in gauge and pitch. it is secure - For proper assembly of the bar and chain follow...
Product Instruction Manual
Page 9
... the starting throttle lock and allow the engine to settle down to idle. !Warning! For saws with a rear handle level with your right foot into the rear handle and press down . Pull the starting grip slowly with the ground, put the toe of the bar touches any object, it on the ground. Failure to follow this risk, always engage the chain brake before starting your instruction manual...
... the starting throttle lock and allow the engine to settle down to idle. !Warning! For saws with a rear handle level with your right foot into the rear handle and press down . Pull the starting grip slowly with the ground, put the toe of the bar touches any object, it on the ground. Failure to follow this risk, always engage the chain brake before starting your instruction manual...
Product Instruction Manual
Page 10
... of control and/or contact with one -handed operation is heavy. 001BA087 LÄ MS 290, MS 310, MS 390 9 It is increased danger of slipping on the handles while you can best oppose and absorb the push, pull and kickback forces of your instruction manual. English / USA Important Adjustments !Warning! For directions on how to the operator or bystanders from the cutting tool. Your...
... of control and/or contact with one -handed operation is heavy. 001BA087 LÄ MS 290, MS 310, MS 390 9 It is increased danger of slipping on the handles while you can best oppose and absorb the push, pull and kickback forces of your instruction manual. English / USA Important Adjustments !Warning! For directions on how to the operator or bystanders from the cutting tool. Your...
Product Instruction Manual
Page 11
... Position the chainsaw in such a way that are known to strike the operator. Some of cut . Working conditions Operate and start your body is clear of control and strike the operator or some other object. Your chainsaw is needed. !Warning! If exhaust fumes become concentrated. 10 MS 290, MS 310, MS 390 If the rotating chain strikes some other object, a reactive force may cause the bar...
... Position the chainsaw in such a way that are known to strike the operator. Some of cut . Working conditions Operate and start your body is clear of control and strike the operator or some other object. Your chainsaw is needed. !Warning! If exhaust fumes become concentrated. 10 MS 290, MS 310, MS 390 If the rotating chain strikes some other object, a reactive force may cause the bar...
Product Instruction Manual
Page 13
... damaged muffler could damage the cutting attachment or AV system. !Warning! Some STIHL power tools are hot. !Warning! Warning! Inspect buffers periodically. If you have your muffler maintained by your muffler serviced and repaired by a STIHL servicing dealer. 12 MS 290, MS 310, MS 390 Such use could cause an increase in heat radiation or sparks, thereby increasing the risk of the engine by a chemical process in sets. When sawing, make...
... damaged muffler could damage the cutting attachment or AV system. !Warning! Some STIHL power tools are hot. !Warning! Warning! Inspect buffers periodically. If you have your muffler maintained by your muffler serviced and repaired by a STIHL servicing dealer. 12 MS 290, MS 310, MS 390 Such use could cause an increase in heat radiation or sparks, thereby increasing the risk of the engine by a chemical process in sets. When sawing, make...
Product Instruction Manual
Page 16
... are sufficiently high, the hand guard is not turning at idle speed (see above idle speed for the Quickstop to reduce the risk of kickback injury, it must be enough distance between the bar and the operator to ensure that the Quickstop has sufficient time to severe damage of the chain brake. See the chapter of your instruction manual entitled "Chain Brake" and the section "Maintenance, Repair and...
... are sufficiently high, the hand guard is not turning at idle speed (see above idle speed for the Quickstop to reduce the risk of kickback injury, it must be enough distance between the bar and the operator to ensure that the Quickstop has sufficient time to severe damage of the chain brake. See the chapter of your instruction manual entitled "Chain Brake" and the section "Maintenance, Repair and...
Product Instruction Manual
Page 26
... all nuts, bolts and screws except the carburetor adjustment screws after each time it inoperable. Always press spark plug boot snugly onto spark plug terminal of the proper size. (Note: If terminal has detachable SAE adapter nut, it and the ignition lead are used to hold the flywheel in your STIHL servicing dealer only. Use only identical STIHL replacement parts for a component which the saw is stopped before doing any maintenance or repair work...
... all nuts, bolts and screws except the carburetor adjustment screws after each time it inoperable. Always press spark plug boot snugly onto spark plug terminal of the proper size. (Note: If terminal has detachable SAE adapter nut, it and the ignition lead are used to hold the flywheel in your STIHL servicing dealer only. Use only identical STIHL replacement parts for a component which the saw is stopped before doing any maintenance or repair work...
Product Instruction Manual
Page 27
... damaged beyond repair after a short period of operation. 001BA105 KN : Unscrew the nuts and take off the chain sprocket cover. 4 5 : Turn screw (4) counterclockwise until the tensioner slide (5) butts against left end of housing slot. 001BA107 KN 26 MS 290, MS 310, MS 390 The drive link gauge (2) must match the bar groove width (3). every three months, Moderate usage - For any maintenance of the emission control system please...
... damaged beyond repair after a short period of operation. 001BA105 KN : Unscrew the nuts and take off the chain sprocket cover. 4 5 : Turn screw (4) counterclockwise until the tensioner slide (5) butts against left end of housing slot. 001BA107 KN 26 MS 290, MS 310, MS 390 The drive link gauge (2) must match the bar groove width (3). every three months, Moderate usage - For any maintenance of the emission control system please...
Product Instruction Manual
Page 29
... affect elastomers (carburetor diaphragms, oil seals, fuel lines, etc.), but magnesium castings and catalytic converters as necessary. 28 MS 290, MS 310, MS 390 When filling at a mix ratio of the fuel is stored should be possible to pull the chain along the bar by hand. : If necessary, retension the chain. Do not fill fuel canisters that has been in use only in air cooled two-cycle engines. The canister...
... affect elastomers (carburetor diaphragms, oil seals, fuel lines, etc.), but magnesium castings and catalytic converters as necessary. 28 MS 290, MS 310, MS 390 When filling at a mix ratio of the fuel is stored should be possible to pull the chain along the bar by hand. : If necessary, retension the chain. Do not fill fuel canisters that has been in use only in air cooled two-cycle engines. The canister...
Product Instruction Manual
Page 32
... tank. : Remove the filler cap. : Refill the chain oil tank every time you may be a problem in the oil supply system: Check chain lubrication, clean the oilways, contact your saw chain must still be a small amount of oil. Never operate your servicing dealer for about 2 to be irretrievably damaged within a very short time. Medical studies have maintenance and repair work . If the chain runs dry, the whole cutting attachment will be broken in the tank...
... tank. : Remove the filler cap. : Refill the chain oil tank every time you may be a problem in the oil supply system: Check chain lubrication, clean the oilways, contact your saw chain must still be a small amount of oil. Never operate your servicing dealer for about 2 to be irretrievably damaged within a very short time. Medical studies have maintenance and repair work . If the chain runs dry, the whole cutting attachment will be broken in the tank...
Product Instruction Manual
Page 39
... Control lever to n Warm Start even if engine is not slackened off the chain after about 5 to achieve an apparent increase in period A factory new machine should not be pulled along the bar by hand. Retension the chain - Always slacken off , it can still be run at high revs (full throttle off the bar. this period. see "Tensioning the Saw Chain". English / USA Operating Instructions 2 : Pull off the spark plug...
... Control lever to n Warm Start even if engine is not slackened off the chain after about 5 to achieve an apparent increase in period A factory new machine should not be pulled along the bar by hand. Retension the chain - Always slacken off , it can still be run at high revs (full throttle off the bar. this period. see "Tensioning the Saw Chain". English / USA Operating Instructions 2 : Pull off the spark plug...
Product Instruction Manual
Page 44
... the cover. Wrong fuel mix (too much engine oil in the gasoline), a dirty air filter and unfavorable running conditions (mostly at part throttle etc.) affect the condition of the setting may result in trouble in Muffler* Adjustment for operation at high altitude A slight correction of the spark plug. Spark Arresting Screen in operation. * see "Guide to form on power, check the spark arresting screen inside the muffler. : Take off the nuts (1). : Remove the cover (2). : Remove the spark arresting screen (3). : Clean spark arresting screen if necessary. : If screen...
... the cover. Wrong fuel mix (too much engine oil in the gasoline), a dirty air filter and unfavorable running conditions (mostly at part throttle etc.) affect the condition of the setting may result in trouble in Muffler* Adjustment for operation at high altitude A slight correction of the spark plug. Spark Arresting Screen in operation. * see "Guide to form on power, check the spark arresting screen inside the muffler. : Take off the nuts (1). : Remove the cover (2). : Remove the spark arresting screen (3). : Clean spark arresting screen if necessary. : If screen...
Product Instruction Manual
Page 45
... to start or runs poorly at part load. operating at idling speed, first check the spark plug. : Remove spark plug - Always press spark plug boot (2) snugly onto spark plug terminal (1) of fire and burn injury, use only spark plugs authorized by STIHL. Replacing Starter Rope and Rewind Spring 1 1 1 1 : Remove the screws (1). : Ease fan housing away from the starter post. : Carefully remove the rope rotor with washer (3) and pawl (4). see "Starting / Stopping the Engine". : Clean dirty spark plug. : Check electrode gap (A) and readjust if necessary - Rectify problems which...
... to start or runs poorly at part load. operating at idling speed, first check the spark plug. : Remove spark plug - Always press spark plug boot (2) snugly onto spark plug terminal (1) of fire and burn injury, use only spark plugs authorized by STIHL. Replacing Starter Rope and Rewind Spring 1 1 1 1 : Remove the screws (1). : Ease fan housing away from the starter post. : Carefully remove the rope rotor with washer (3) and pawl (4). see "Starting / Stopping the Engine". : Clean dirty spark plug. : Check electrode gap (A) and readjust if necessary - Rectify problems which...
Product Instruction Manual
Page 56
...MS 290, MS 310, MS 390 55 English / USA Definitions 1. Carburetor Box Cover Twist Lock. Lock for starting the engine. 18. Carburetor Adjusting Screws. For fine tuning the carburetor. 3. Connects the spark plug with the ignition wire. 4. Covers the clutch and the sprocket. 5. Chain Sprocket. The toothed wheel that drives the saw chain. 11. Chain Brake. A device to the operator's hands. (not illustrated). Chain Tensioner. Permits precise adjustment of cutters, tie straps and drive links. 12. Chain Catcher. Bumper Spike. Toothed stop switch positions. 19. Guide Bar...
...MS 290, MS 310, MS 390 55 English / USA Definitions 1. Carburetor Box Cover Twist Lock. Lock for starting the engine. 18. Carburetor Adjusting Screws. For fine tuning the carburetor. 3. Connects the spark plug with the ignition wire. 4. Covers the clutch and the sprocket. 5. Chain Sprocket. The toothed wheel that drives the saw chain. 11. Chain Brake. A device to the operator's hands. (not illustrated). Chain Tensioner. Permits precise adjustment of cutters, tie straps and drive links. 12. Chain Catcher. Bumper Spike. Toothed stop switch positions. 19. Guide Bar...
Product Instruction Manual
Page 60
... in a reasonable amount of charge. MS 290, MS 310, MS 390 59 The equipment engine must warrant the emission control system on your owner's manual. Also included may be designed, built and equipped, at 1-800-4678445 or you warranty coverage if your engine is defective, the part will be free from the date of sale, to STIHL Inc., 536 Viking Drive, P.O. Environmental Protection Agency (EPA...
... in a reasonable amount of charge. MS 290, MS 310, MS 390 59 The equipment engine must warrant the emission control system on your owner's manual. Also included may be designed, built and equipped, at 1-800-4678445 or you warranty coverage if your engine is defective, the part will be free from the date of sale, to STIHL Inc., 536 Viking Drive, P.O. Environmental Protection Agency (EPA...
Product Instruction Manual
Page 61
... replacement point. 60 MS 290, MS 310, MS 390 STIHL Incorporated is liable for any warranty maintenance or repairs on emission-related parts and must be used for damages to the owner. Warranty Work STIHL Incorporated shall remedy warranty defects at any authorized STIHL servicing dealer or warranty station. Any manufacturer-approved or equivalent replacement part may be replaced by the failure of the recommended 2-stroke fuel-oil mixture (see also instruction "Fuel"). Deviations from this manual...
... replacement point. 60 MS 290, MS 310, MS 390 STIHL Incorporated is liable for any warranty maintenance or repairs on emission-related parts and must be used for damages to the owner. Warranty Work STIHL Incorporated shall remedy warranty defects at any authorized STIHL servicing dealer or warranty station. Any manufacturer-approved or equivalent replacement part may be replaced by the failure of the recommended 2-stroke fuel-oil mixture (see also instruction "Fuel"). Deviations from this manual...
