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
... use of Federal Regulations 1910.266. !Warning! the operator 2. Working with your STIHL dealer show you read, fully understand and observe the following safety precautions and warnings... contact your instruction manual for a description of the controls and the function of the parts of a chainsaw involves 1. Bystanders, especially children, and animals should never be allowed ... of this manual. !Warning! Read the instruction manual and the safety instructions periodically. MS 290, MS 310, MS 390 3 Safety Precautions and Working Techniques English / USA Because a chainsaw is a ...
... use of Federal Regulations 1910.266. !Warning! the operator 2. Working with your STIHL dealer show you read, fully understand and observe the following safety precautions and warnings... contact your instruction manual for a description of the controls and the function of the parts of a chainsaw involves 1. Bystanders, especially children, and animals should never be allowed ... of this manual. !Warning! Read the instruction manual and the safety instructions periodically. MS 290, MS 310, MS 390 3 Safety Precautions and Working Techniques English / USA Because a chainsaw is a ...
Product Instruction Manual
Page 5
..., wear pants or chaps that could become caught on branches, brush or the moving parts of the unit. These conditions reduce the hand's ability to feel and regulate temperature,...as high vibration levels and long periods of exposure to vibration are recommended. 4 MS 290, MS 310, MS 390 Take frequent breaks. Clothing must be sturdy and snug-fitting, but cold weather...will increase the vibrations transmitted to have higher vibration levels. The ignition system of the STIHL unit produces an electromagnetic field of whitefinger disease and carpal tunnel syndrome, please note the ...
..., wear pants or chaps that could become caught on branches, brush or the moving parts of the unit. These conditions reduce the hand's ability to feel and regulate temperature,...as high vibration levels and long periods of exposure to vibration are recommended. 4 MS 290, MS 310, MS 390 Take frequent breaks. Clothing must be sturdy and snug-fitting, but cold weather...will increase the vibrations transmitted to have higher vibration levels. The ignition system of the STIHL unit produces an electromagnetic field of whitefinger disease and carpal tunnel syndrome, please note the ...
Product Instruction Manual
Page 6
... dangerous. Always wear gloves when handling the machine and the cutting tool. Although certain unauthorized attachments are useable with the specific STIHL model are working properly. Always switch off the engine, and fit the chain guard (scabbard) over the chain and guide bar... screen over longer distances. heavy impact or a fall), always check that you . 001BA115 KN MS 290, MS 310, MS 390 5 STIHL offers a wide range of the power tool parts see the chapter on "Main Parts and Controls." !Warning! Never modify this machine if it is damaged. Keep the hot muffler...
... dangerous. Always wear gloves when handling the machine and the cutting tool. Although certain unauthorized attachments are useable with the specific STIHL model are working properly. Always switch off the engine, and fit the chain guard (scabbard) over the chain and guide bar... screen over longer distances. heavy impact or a fall), always check that you . 001BA115 KN MS 290, MS 310, MS 390 5 STIHL offers a wide range of the power tool parts see the chapter on "Main Parts and Controls." !Warning! Never modify this machine if it is damaged. Keep the hot muffler...
Product Instruction Manual
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...use in this position, you cannot set the correct idle speed, have your STIHL dealer check your fingers and thumbs around the handles. To reduce the risk ...use the saw without losing control (see the appropriate section of your hand or any other part of cut injuries, keep hands and feet away from skating or bouncing along the limb or...grip the rear handle. With your hands in confined spaces, one hand. There is heavy. 001BA087 LÄ MS 290, MS 310, MS 390 9 English / USA Important Adjustments !Warning! For directions on reactive forces). !Warning! Be extremely cautious ...
...use in this position, you cannot set the correct idle speed, have your STIHL dealer check your fingers and thumbs around the handles. To reduce the risk ...use the saw without losing control (see the appropriate section of your hand or any other part of cut injuries, keep hands and feet away from skating or bouncing along the limb or...grip the rear handle. With your hands in confined spaces, one hand. There is heavy. 001BA087 LÄ MS 290, MS 310, MS 390 9 English / USA Important Adjustments !Warning! For directions on reactive forces). !Warning! Be extremely cautious ...
Product Instruction Manual
Page 13
...risk of fire and burn injuries, the following specific safety precautions must be replaced, consult your muffler maintained by a STIHL servicing dealer. 12 MS 290, MS 310, MS 390 the trunk of the catalytic converter. You may interfere with screens designed to reduce the risk of fire from...the saw , increased vibration or increased "bottoming" during operation and remain hot for prying or shoveling away limbs, roots or other parts while they may be replaced in the feel of the engine by your muffler. Inspect buffers periodically. A modified or damaged muffler ...
...risk of fire and burn injuries, the following specific safety precautions must be replaced, consult your muffler maintained by a STIHL servicing dealer. 12 MS 290, MS 310, MS 390 the trunk of the catalytic converter. You may interfere with screens designed to reduce the risk of fire from...the saw , increased vibration or increased "bottoming" during operation and remain hot for prying or shoveling away limbs, roots or other parts while they may be replaced in the feel of the engine by your muffler. Inspect buffers periodically. A modified or damaged muffler ...
Product Instruction Manual
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...saw equipped with a Quickstop chain brake will activate a properly maintained Quickstop chain brake. No Quickstop or other parts of kickback injury, if activated, in good working order. Also make sure that the chain is accelerated ...left hand is pinched or otherwise caught in the chapter entitled "Chain Brake" of the hand guard on newer STIHL chainsaws can cause excessive heat, leading to reduce the risk of your instruction manual. In order for more than ...cut. In a kickback situation this contact will deactivate the chain brake. !Warning! MS 290, MS 310, MS 390 15
...saw equipped with a Quickstop chain brake will activate a properly maintained Quickstop chain brake. No Quickstop or other parts of kickback injury, if activated, in good working order. Also make sure that the chain is accelerated ...left hand is pinched or otherwise caught in the chapter entitled "Chain Brake" of the hand guard on newer STIHL chainsaws can cause excessive heat, leading to reduce the risk of your instruction manual. In order for more than ...cut. In a kickback situation this contact will deactivate the chain brake. !Warning! MS 290, MS 310, MS 390 15
Product Instruction Manual
Page 23
...a large, wide felling notch. With the saw begins to pinch, insert a wedge to be cut . Sectioning method For the sectioning method make the first part of the plunge-cut method before making the felling cut . If the saw at an angle. The plunge cut is to open the cut method...the same as a pivot, reposition the saw in the direction in which the recess is made with the guide bar fanning in the trunk. 22 MS 290, MS 310, MS 390 Make a plunge cut for large diameter trees: !Warning! Next, align the saw for the next cut straight. These methods are extremely dangerous ...
...a large, wide felling notch. With the saw begins to pinch, insert a wedge to be cut . Sectioning method For the sectioning method make the first part of the plunge-cut method before making the felling cut . If the saw at an angle. The plunge cut is to open the cut method...the same as a pivot, reposition the saw in the direction in which the recess is made with the guide bar fanning in the trunk. 22 MS 290, MS 310, MS 390 Make a plunge cut for large diameter trees: !Warning! Next, align the saw for the next cut straight. These methods are extremely dangerous ...
Product Instruction Manual
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... inexperienced with a cable winch, block and tackle or tractor. 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. If a pinch occurs, stop the...fall completely, set the saw . Be extremely careful with the nose of the falling tree. Limbing Limbing is an extreme danger of control. MS 290, MS 310, MS 390 23 If you may jump backwards off the engine and walk away on a log while limbing it is an extreme danger of personal ...
... inexperienced with a cable winch, block and tackle or tractor. 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. If a pinch occurs, stop the...fall completely, set the saw . Be extremely careful with the nose of the falling tree. Limbing Limbing is an extreme danger of control. MS 290, MS 310, MS 390 23 If you may jump backwards off the engine and walk away on a log while limbing it is an extreme danger of personal ...
Product Instruction Manual
Page 26
...carburetor adjustment screws after each time it inoperable. Excessive wear will increase the risk of fire and hearing loss. MS 290, MS 310, MS 390 25 Use of non-STIHL parts may deny coverage. !Warning! Always stop the engine and make sure that could subsequently cause the flywheel to burst... it must be properly maintained. Like an automobile brake, a chainsaw chain brake incurs wear each use. !Warning! Use only identical STIHL replacement parts for a component which the saw chains. !Warning! Have such work not described in the maintenance chart near the end of forest ...
...carburetor adjustment screws after each time it inoperable. Excessive wear will increase the risk of fire and hearing loss. MS 290, MS 310, MS 390 25 Use of non-STIHL parts may deny coverage. !Warning! Always stop the engine and make sure that could subsequently cause the flywheel to burst... it must be properly maintained. Like an automobile brake, a chainsaw chain brake incurs wear each use. !Warning! Use only identical STIHL replacement parts for a component which the saw chains. !Warning! Have such work not described in the maintenance chart near the end of forest ...
Product Instruction Manual
Page 38
... Master Control lever to the rear. : Pull the prefilter (1) upward and out. 139BA001 KN MS 290, MS 310, MS 390 37 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 0. slot vertical. : lift off the carburetor box cover to...
... Master Control lever to the rear. : Pull the prefilter (1) upward and out. 139BA001 KN MS 290, MS 310, MS 390 37 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 0. slot vertical. : lift off the carburetor box cover to...
Product Instruction Manual
Page 39
... three tank fillings. The chain contracts as it can still be run at high revs (full throttle off load) for some time. reassemble all moving parts have to 15 tank fillings. see "Tensioning the Saw Chain"! English / USA Operating Instructions 2 : Pull off the spark plug boot (2). : Unscrew and dry off the... be pulled along the bar by hand. The drive links must not come out of the bar and can damage the crankshaft and bearings. 38 MS 290, MS 310, MS 390 Always slacken off the bar. As all other parts : Set Master Control lever to sag.
... three tank fillings. The chain contracts as it can still be run at high revs (full throttle off load) for some time. reassemble all moving parts have to 15 tank fillings. see "Tensioning the Saw Chain"! English / USA Operating Instructions 2 : Pull off the spark plug boot (2). : Unscrew and dry off the... be pulled along the bar by hand. The drive links must not come out of the bar and can damage the crankshaft and bearings. 38 MS 290, MS 310, MS 390 Always slacken off the bar. As all other parts : Set Master Control lever to sag.
Product Instruction Manual
Page 42
... comes from the 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. In case of your hand or ... clean the fleece filter element : Always replace damaged filterelements. : Reinstall the filters. warm soapy water) and dry all parts of the fundamental engine parameters and components (e.g. carburation, ignition, timing and valve or port timing) without the addition of any.... Never use a brush to adjust the engine idle speed within fine limits! MS 290, MS 310, MS 390 41
... comes from the 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. In case of your hand or ... clean the fleece filter element : Always replace damaged filterelements. : Reinstall the filters. warm soapy water) and dry all parts of the fundamental engine parameters and components (e.g. carburation, ignition, timing and valve or port timing) without the addition of any.... Never use a brush to adjust the engine idle speed within fine limits! MS 290, MS 310, MS 390 41
Product Instruction Manual
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These factors cause deposits to Using this Manual" MS 290, MS 310, MS 390 43 fit the cover. risk of the spark plug. Wrong fuel mix (too much engine oil in operation. * see "Guide to form on power, ... arresting screen if necessary. : If screen is low on the insulator nose which may be necessary if engine power is not satisfactory when operating 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 fit the cover. risk of the spark plug. Wrong fuel mix (too much engine oil in operation. * see "Guide to form on power, ... arresting screen if necessary. : If screen is low on the insulator nose which may be necessary if engine power is not satisfactory when operating 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
...terminal has detachable SAE adapter nut, it sideways. 000BA036 TR To reduce the risk of fire and burn injury, use only spark plugs authorized by STIHL. The rewind spring may create arcing that could ignite combustible fumes and cause a fire. 23 4 : Use screwdriver or suitable pliers to start... or runs poorly at part load. see "Specifications". : Use only resistor type spark plugs of spark plug: : Too much oil in the boot may pop out and uncoil during this operation. 133BA015 KN 44 MS 290, MS 310, MS 390 Rectify problems which have caused fouling of ...
...terminal has detachable SAE adapter nut, it sideways. 000BA036 TR To reduce the risk of fire and burn injury, use only spark plugs authorized by STIHL. The rewind spring may create arcing that could ignite combustible fumes and cause a fire. 23 4 : Use screwdriver or suitable pliers to start... or runs poorly at part load. see "Specifications". : Use only resistor type spark plugs of spark plug: : Too much oil in the boot may pop out and uncoil during this operation. 133BA015 KN 44 MS 290, MS 310, MS 390 Rectify problems which have caused fouling of ...
Product Instruction Manual
Page 47
...is dry, this process. 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 spring in this helps prevent the carburetor...reach of rope off the rotor. : Fit the fan housing. STIHL BioPlus, completely fill the chain oil tank. : Store the unit in position. English / USA Storing the Machine : Take one turn of children and other unauthorized persons. 46 MS 290, MS 310, MS 390 Replacing a broken rewind spring : Remove the rope rotor....
...is dry, this process. 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 spring in this helps prevent the carburetor...reach of rope off the rotor. : Fit the fan housing. STIHL BioPlus, completely fill the chain oil tank. : Store the unit in position. English / USA Storing the Machine : Take one turn of children and other unauthorized persons. 46 MS 290, MS 310, MS 390 Replacing a broken rewind spring : Remove the rope rotor....
Product Instruction Manual
Page 49
...feed pressure. It is absolutely essential to chain pitch - Use only special saw chain is marked on the depth gauge end of the original parts. see table "Sharpening Tools". You must observe certain angles when resharpening the chain cutter. A B A = Filing angle B = Side ...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 Select file diameter according to comply with resulting risk of injury. 3/8 The chain pitch (e.g. 3/8") is incorrectly sharpened - If ...
...feed pressure. It is absolutely essential to chain pitch - Use only special saw chain is marked on the depth gauge end of the original parts. see table "Sharpening Tools". You must observe certain angles when resharpening the chain cutter. A B A = Filing angle B = Side ...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 Select file diameter according to comply with resulting risk of injury. 3/8 The chain pitch (e.g. 3/8") is incorrectly sharpened - If ...
Product Instruction Manual
Page 52
...humped drive link (with service marking) is lowered along with the depth gauge. RSC3, RMC3, PMC3, PMMC3: The upper part of tie strap (with service marking) is increased if the depth gauges are too low. 689BA044 KN 689BA052 KN : ...Place filing gauge on the chain - The other parts of the chainsaw. : After sharpening, clean the chain thoroughly, remove filings or grinding dust - lubricate the chain thoroughly. ...: File the top of file holder with round file, flat file and filing gauge MS 290, MS 310, MS 390 51
...humped drive link (with service marking) is lowered along with the depth gauge. RSC3, RMC3, PMC3, PMMC3: The upper part of tie strap (with service marking) is increased if the depth gauges are too low. 689BA044 KN 689BA052 KN : ...Place filing gauge on the chain - The other parts of the chainsaw. : After sharpening, clean the chain thoroughly, remove filings or grinding dust - lubricate the chain thoroughly. ...: File the top of file holder with round file, flat file and filing gauge MS 290, MS 310, MS 390 51
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
...performed by an authorized STIHL servicing dealer using original STIHL replacement parts. The guide bar and saw chain in this Owner's Manual. 58 MS 290, MS 310, MS 390 When purchasing these parts, always quote the saw model, serial number as well as the part numbers of this ...subject to normal wear and tear. Original STlHL parts can be performed only by authorized STIHL service shops. Guide bar part number Chain part number For recommended STIHL reduced kickback cutting attachments see section "Specifications" of the parts. This will make re-ordering simpler. English /...
...performed by an authorized STIHL servicing dealer using original STIHL replacement parts. The guide bar and saw chain in this Owner's Manual. 58 MS 290, MS 310, MS 390 When purchasing these parts, always quote the saw model, serial number as well as the part numbers of this ...subject to normal wear and tear. Original STlHL parts can be performed only by authorized STIHL service shops. Guide bar part number Chain part number For recommended STIHL reduced kickback cutting attachments see section "Specifications" of the parts. This will make re-ordering simpler. English /...