Product Instruction Manual
Page 2
... from time-to Using this Manual 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 .......... 34 Starting / Stopping the Engine ........ 35 Operating Instructions 38 Oil Quantity Control 39 Taking Care of Guide Bar 39 Air Filter System 40 Cleaning Air Filter 40 Motor Management 41 Adjusting the Carburetor 41 Spark Arresting Screen...
... from time-to Using this Manual 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 .......... 34 Starting / Stopping the Engine ........ 35 Operating Instructions 38 Oil Quantity Control 39 Taking Care of Guide Bar 39 Air Filter System 40 Cleaning Air Filter 40 Motor Management 41 Adjusting the Carburetor 41 Spark Arresting Screen...
Product Instruction Manual
Page 3
... described in this manual. 2 MS 290, MS 310, MS 390 Equipment and features This instruction manual may be covered in the manual may refer to several models with an asterisk (*). As a result, engineering changes and improvements are shown and explained in this manual, please contact your STIHL dealer for using the machine, but may contain item numbers that require your STIHL dealer. If the operating characteristics or the...
... described in this manual. 2 MS 290, MS 310, MS 390 Equipment and features This instruction manual may be covered in the manual may refer to several models with an asterisk (*). As a result, engineering changes and improvements are shown and explained in this manual, please contact your STIHL dealer for using the machine, but may contain item numbers that require your STIHL dealer. If the operating characteristics or the...
Product Instruction Manual
Page 4
...! Observe all STIHL chainsaws. Be sure that anyone using a chain saw for logging purposes, for instance, refer to reduce the risk of personal injury. At full throttle, the chain speed can be hazardous.The saw also apply to use (e.g. Different models may have any substance (drugs, alcohol, etc.) which might be in use of the saw 3. the operator 2. the saw . the use . !Warning! MS 290, MS 310, MS 390 3 Do...
...! Observe all STIHL chainsaws. Be sure that anyone using a chain saw for logging purposes, for instance, refer to reduce the risk of personal injury. At full throttle, the chain speed can be hazardous.The saw also apply to use (e.g. Different models may have any substance (drugs, alcohol, etc.) which might be in use of the saw 3. the operator 2. the saw . the use . !Warning! MS 290, MS 310, MS 390 3 Do...
Product Instruction Manual
Page 6
..., fuel spillage and damage to unusually high loads for use may damage your hands. Never modify this power tool in particular that the machine is subjected to the unit. Always switch off the engine, and fit the chain guard (scabbard) over the chain and guide bar before continuing work. To reduce the risk of injury to your power tool with STIHL power tools, their hearing checked regularly. THE POWER TOOL...
..., fuel spillage and damage to unusually high loads for use may damage your hands. Never modify this power tool in particular that the machine is subjected to the unit. Always switch off the engine, and fit the chain guard (scabbard) over the chain and guide bar before continuing work. To reduce the risk of injury to your power tool with STIHL power tools, their hearing checked regularly. THE POWER TOOL...
Product Instruction Manual
Page 7
... do not start or run the engine until it can cause an improperly tightened fuel filler cap to reduce the risk of fuel spillage and fire, tighten the fuel filler cap by a spark or other similar tool can be equipped with this happens, change your instruction manual. 6 MS 290, MS 310, MS 390 Screw cap !Warning! English / USA Fuel Your STIHL power tool uses an oilgasoline mixture for fuel (see the chapter on "Fuel" of your power tool in...
... do not start or run the engine until it can cause an improperly tightened fuel filler cap to reduce the risk of fuel spillage and fire, tighten the fuel filler cap by a spark or other similar tool can be equipped with this happens, change your instruction manual. 6 MS 290, MS 310, MS 390 Screw cap !Warning! English / USA Fuel Your STIHL power tool uses an oilgasoline mixture for fuel (see the chapter on "Fuel" of your power tool in...
Product Instruction Manual
Page 8
... "Mounting the Bar and Chain" of the instruction manual.) !Warning! To reduce the risk of moisture, pitch, oil, fuel mix, grease or resin in your chainsaw. English / USA Before Starting Take off the engine and then tighten. The throttle trigger must be engaged when starting methods reduce the risk of the bar and chain follow the procedure described in gauge and pitch. Never operate your power tool if it is...
... "Mounting the Bar and Chain" of the instruction manual.) !Warning! To reduce the risk of moisture, pitch, oil, fuel mix, grease or resin in your chainsaw. English / USA Before Starting Take off the engine and then tighten. The throttle trigger must be engaged when starting methods reduce the risk of the bar and chain follow the procedure described in gauge and pitch. Never operate your power tool if it is...
Product Instruction Manual
Page 9
... enough for starting throttle lock and allow the engine to idle. !Warning! Be sure that the guide bar and chain are clear of the saw without placing it properly. Do not let the grip snap back, but guide the starter rope to follow this risk, always engage the chain brake before starting grip slowly with your legs just above the knees. For saws with a rear handle level with...
... enough for starting throttle lock and allow the engine to idle. !Warning! Be sure that the guide bar and chain are clear of the saw without placing it properly. Do not let the grip snap back, but guide the starter rope to follow this risk, always engage the chain brake before starting grip slowly with your legs just above the knees. For saws with a rear handle level with...
Product Instruction Manual
Page 10
... handles while you to control reactive forces and to prevent the bar and chain from loss of control, never use your unit with both hands on how to avoid stumbling. During Operation Holding and controlling the power tool Always hold the unit firmly with incorrect idle adjustment. Even for those compact saws designed for use in this position, you cannot set the correct idle speed, have your STIHL dealer check...
... handles while you to control reactive forces and to prevent the bar and chain from loss of control, never use your unit with both hands on how to avoid stumbling. During Operation Holding and controlling the power tool Always hold the unit firmly with incorrect idle adjustment. Even for those compact saws designed for use in this position, you cannot set the correct idle speed, have your STIHL dealer check...
Product Instruction Manual
Page 11
... a lift bucket), have both hands free for operating the chainsaw in a cramped environment and have received specific, professional training for such work in a tree unless you are properly secured (such as unburned hydrocarbons (including benzene) and carbon monoxide, that your power tool only outdoors in poorly ventilated locations. If the rotating chain strikes some other reproductive harm. To...
... a lift bucket), have both hands free for operating the chainsaw in a cramped environment and have received specific, professional training for such work in a tree unless you are properly secured (such as unburned hydrocarbons (including benzene) and carbon monoxide, that your power tool only outdoors in poorly ventilated locations. If the rotating chain strikes some other reproductive harm. To...
Product Instruction Manual
Page 13
... less rapidly than conventional mufflers, always set your STIHL servicing dealer. !Warning! fins of the cylinder, spark plug) become hot during normal operation may result in heat radiation or sparks, thereby increasing the risk of fire and burn injuries, the following specific safety precautions must be flung off . Have your muffler serviced and repaired by a STIHL servicing dealer. 12 MS 290, MS 310, MS 390 To reduce the...
... less rapidly than conventional mufflers, always set your STIHL servicing dealer. !Warning! fins of the cylinder, spark plug) become hot during normal operation may result in heat radiation or sparks, thereby increasing the risk of fire and burn injuries, the following specific safety precautions must be flung off . Have your muffler serviced and repaired by a STIHL servicing dealer. 12 MS 290, MS 310, MS 390 To reduce the...
Product Instruction Manual
Page 15
... ANSI B 175.12000 use only the following cutting attachments: - b) Saws with a displacement of the instruction manual or - The computer derived angles of § 5.11 of ANSI B 175.1-2000 may occur in the "Specifications" section of less than 3.8 cubic inches (62 cm³) - bar and chain combinations listed as a chain brake, low kickback chain, reduced kickback bar, etc. replacement chain designated "low kickback saw until the problem has been rectified.
... ANSI B 175.12000 use only the following cutting attachments: - b) Saws with a displacement of the instruction manual or - The computer derived angles of § 5.11 of ANSI B 175.1-2000 may occur in the "Specifications" section of less than 3.8 cubic inches (62 cm³) - bar and chain combinations listed as a chain brake, low kickback chain, reduced kickback bar, etc. replacement chain designated "low kickback saw until the problem has been rectified.
Product Instruction Manual
Page 16
... "Chain Brake" and the section "Maintenance, Repair and Storing" at "Important Adjustments"). No Quickstop or other parts of your instruction manual. 001BA174 KN !Warning! If clutch slippage in certain kickback situations. If the kickback forces are designed to cool before potential contact with the operation of the motor housing, clutch and oiler component and may interfere with the operator. !Warning! These devices are sufficiently high...
... "Chain Brake" and the section "Maintenance, Repair and Storing" at "Important Adjustments"). No Quickstop or other parts of your instruction manual. 001BA174 KN !Warning! If clutch slippage in certain kickback situations. If the kickback forces are designed to cool before potential contact with the operation of the motor housing, clutch and oiler component and may interfere with the operator. !Warning! These devices are sufficiently high...
Product Instruction Manual
Page 26
... muffler is stopped before doing any maintenance or repair work or cleaning the power tool. !Warning! You can render it must be properly maintained. Do not operate your instruction manual. However, if you make sure it must be securely attached.) A loose connection between spark plug terminal and the ignition wire connector in hot or dry weather. Use only identical STIHL replacement parts for a component which the saw chains. !Warning! MS 290, MS 310, MS...
... muffler is stopped before doing any maintenance or repair work or cleaning the power tool. !Warning! You can render it must be properly maintained. Do not operate your instruction manual. However, if you make sure it must be securely attached.) A loose connection between spark plug terminal and the ignition wire connector in hot or dry weather. Use only identical STIHL replacement parts for a component which the saw chains. !Warning! MS 290, MS 310, MS...
Product Instruction Manual
Page 27
... usage - For these reasons, each STIHL chainsaw should also be 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 depending on the chain sprocket and guide bar in a dry place and away from...
... usage - For these reasons, each STIHL chainsaw should also be 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 depending on the chain sprocket and guide bar in a dry place and away from...
Product Instruction Manual
Page 29
... gasoline! Take care when handling gasoline. Check chain tension frequently - see "Operating Instructions". 143BA007 KN This engine is specially formulated for use in order to the engine. Fuel with the skin and avoid inhaling fuel vapor. Some fuel additives not only detrimentally affect elastomers (carburetor diaphragms, oil seals, fuel lines, etc.), but magnesium castings and catalytic converters as necessary. 28 MS 290, MS 310, MS 390 Avoid direct contact...
... gasoline! Take care when handling gasoline. Check chain tension frequently - see "Operating Instructions". 143BA007 KN This engine is specially formulated for use in order to the engine. Fuel with the skin and avoid inhaling fuel vapor. Some fuel additives not only detrimentally affect elastomers (carburetor diaphragms, oil seals, fuel lines, etc.), but magnesium castings and catalytic converters as necessary. 28 MS 290, MS 310, MS 390 Avoid direct contact...
Product Instruction Manual
Page 44
... engine oil in operation. * see "Guide to Using this Manual" MS 290, MS 310, MS 390 43 These factors cause deposits 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 is not satisfactory when operating at high altitude: : Check standard setting. : Warm up , fit a new one. : Refit the spark arresting screen - risk of engine damage. 1 1 1 3 2 139BA020 KN English / USA Checking the Spark Plug...
... engine oil in operation. * see "Guide to Using this Manual" MS 290, MS 310, MS 390 43 These factors cause deposits 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 is not satisfactory when operating at high altitude: : Check standard setting. : Warm up , fit a new one. : Refit the spark arresting screen - risk of engine damage. 1 1 1 3 2 139BA020 KN English / USA Checking the Spark Plug...
Product Instruction Manual
Page 45
... 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 Replacing Starter Rope and Rewind Spring 1 1 1 1 : Remove the screws (1). : Ease fan housing away from 1 crankcase and remove it must be attached.) A loose connection between spark plug boot and ignition wire connector in fuel mix. : Dirty air filter. : Unfavorable running conditions, e.g. 133BA014 KN English / USA If engine is down on power, difficult to carefully remove spring...
... 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 Replacing Starter Rope and Rewind Spring 1 1 1 1 : Remove the screws (1). : Ease fan housing away from 1 crankcase and remove it must be attached.) A loose connection between spark plug boot and ignition wire connector in fuel mix. : Dirty air filter. : Unfavorable running conditions, e.g. 133BA014 KN English / USA If engine is down on power, difficult to carefully remove spring...
Product Instruction Manual
Page 56
... the engine. 21. MS 290, MS 310, MS 390 55 Lock for starting the engine. 18. Connects the spark plug with the ignition wire. 4. Chain Sprocket. Chain Catcher. Guide Bar. Front Hand Guard. The grip of vibrations created by inertia. 7. Clutch. The anti-vibration system includes a number of buffers designed to stop switch positions. 19. For fine tuning the carburetor. 3. A device to reduce the transmission of the starter, for carburetor box cover. 2. Supports and guides the saw chain. 6. For closing the fuel tank...
... the engine. 21. MS 290, MS 310, MS 390 55 Lock for starting the engine. 18. Connects the spark plug with the ignition wire. 4. Chain Sprocket. Chain Catcher. Guide Bar. Front Hand Guard. The grip of vibrations created by inertia. 7. Clutch. The anti-vibration system includes a number of buffers designed to stop switch positions. 19. For fine tuning the carburetor. 3. A device to reduce the transmission of the starter, for carburetor box cover. 2. Supports and guides the saw chain. 6. For closing the fuel tank...
Product Instruction Manual
Page 60
... durability may be repaired or replaced by STIHL Incorporated free of charge. Any replacement part or service that is defective, the part will be used in non-warranty maintenance or repairs, and shall not reduce the warranty obligations of the required maintenance listed in materials and workmanship which cause the engine to fail to you are responsible for the performance of the engine manufacturer. Owner's Warranty Responsibilities: As the...
... durability may be repaired or replaced by STIHL Incorporated free of charge. Any replacement part or service that is defective, the part will be used in non-warranty maintenance or repairs, and shall not reduce the warranty obligations of the required maintenance listed in materials and workmanship which cause the engine to fail to you are responsible for the performance of the engine manufacturer. Owner's Warranty Responsibilities: As the...
Product Instruction Manual
Page 61
... defective, the part will be replaced by STIHL Incorporated at an authorized STIHL servicing dealer. Any warranted part which leads to any warranty maintenance or repairs on the application of a warranted part still under warranty. Limitations This Emission Control Systems Warranty shall not cover any of the following list specifically defines the emission-related warranted parts: Carburetor Choke (Cold start enrichment system) Intake manifold Air filter Spark plug Magneto or electronic ignition system (ignition module) Catalytic...
... defective, the part will be replaced by STIHL Incorporated at an authorized STIHL servicing dealer. Any warranted part which leads to any warranty maintenance or repairs on the application of a warranted part still under warranty. Limitations This Emission Control Systems Warranty shall not cover any of the following list specifically defines the emission-related warranted parts: Carburetor Choke (Cold start enrichment system) Intake manifold Air filter Spark plug Magneto or electronic ignition system (ignition module) Catalytic...