Product Instruction Manual
Page 2
............. 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 in this Manual. !Warning! Because a chainsaw is a ... 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, please contact your...
............. 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 in this Manual. !Warning! Because a chainsaw is a ... 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, please contact your...
Product Instruction Manual
Page 41
...: Lift off the carburetor box cover to the rear. : Clean away loose dirt from around filter. * see "Guide to Using this Manual" 40 MS 290, MS 310, MS 390 Dirty air filters reduce engine power, increase fuel consumption and make starting more difficult. If groove depth is a... noticeable loss of filters. Fabric filter* For normal operating conditions and winter operation. the cutters and tie straps...
...: Lift off the carburetor box cover to the rear. : Clean away loose dirt from around filter. * see "Guide to Using this Manual" 40 MS 290, MS 310, MS 390 Dirty air filters reduce engine power, increase fuel consumption and make starting more difficult. If groove depth is a... noticeable loss of filters. Fabric filter* For normal operating conditions and winter operation. the cutters and tie straps...
Product Instruction Manual
Page 42
...1 3 22 Exhaust emissions are controlled by the design of the filter. This setting provides an optimum fuel-air mixture under most operating conditions. 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. ... fine limits! In case of your hand or blow it is only possible to clean the fleece filter element : Always replace damaged filterelements. : Reinstall the filters. MS 290, MS 310, MS 390 41 carburation, ignition, timing and valve or port timing) without the addition of any major ...
...1 3 22 Exhaust emissions are controlled by the design of the filter. This setting provides an optimum fuel-air mixture under most operating conditions. 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. ... fine limits! In case of your hand or blow it is only possible to clean the fleece filter element : Always replace damaged filterelements. : Reinstall the filters. MS 290, MS 310, MS 390 41 carburation, ignition, timing and valve or port timing) without the addition of any major ...
Product Instruction Manual
Page 43
... while idling : Turn the idle speed adjusting screw (LA) clockwise until engine runs and accelerates smoothly. 139BA013 KN 139BA013 KN 42 MS 290, MS 310, MS 390 then back off the engine. : Check the air filter and replace if necessary. : Check the spark arresting screen and clean or replace as necessary. : Turn the high speed adjusting...
... while idling : Turn the idle speed adjusting screw (LA) clockwise until engine runs and accelerates smoothly. 139BA013 KN 139BA013 KN 42 MS 290, MS 310, MS 390 then back off the engine. : Check the air filter and replace if necessary. : Check the spark arresting screen and clean or replace as necessary. : Turn the high speed adjusting...
Product Instruction Manual
Page 44
... screen - Spark Arresting Screen in Muffler* Adjustment for 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 low on the insulator nose which may be exceeded - These factors cause deposits to Using this Manual" MS 290, MS 310, MS 390 43
... screen - Spark Arresting Screen in Muffler* Adjustment for 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 low on the insulator nose which may be exceeded - These factors cause deposits to Using this Manual" MS 290, MS 310, MS 390 43
Product Instruction Manual
Page 45
...SAE adapter nut, 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. see "Starting / Stopping the Engine". : Clean dirty spark plug. : Check electrode gap (A) and... plug boot (2) snugly onto spark plug terminal (1) 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... may pop out and uncoil during this operation. 133BA015 KN 44 MS 290, MS 310, MS 390
...SAE adapter nut, 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. see "Starting / Stopping the Engine". : Clean dirty spark plug. : Check electrode gap (A) and... plug boot (2) snugly onto spark plug terminal (1) 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... may pop out and uncoil during this operation. 133BA015 KN 44 MS 290, MS 310, MS 390
Product Instruction Manual
Page 47
... engage the lug. : Apply suitable tools (screwdriver, punch, etc.) to the cylinder fins and air filter. : If you take them and spray with retaining frame in position in this helps prevent the ... in a well ventilated area. : Dispose of remaining fuel and cleaning solution properly in position. STIHL BioPlus, completely fill the chain oil tank. : Store the unit in the fan housing might still... / USA Storing the Machine : Take one turn of children and other unauthorized persons. 46 MS 290, MS 310, MS 390 To reduce risk of injury, wear eye and face protection and work gloves. : Use...
... engage the lug. : Apply suitable tools (screwdriver, punch, etc.) to the cylinder fins and air filter. : If you take them and spray with retaining frame in position in this helps prevent the ... in a well ventilated area. : Dispose of remaining fuel and cleaning solution properly in position. STIHL BioPlus, completely fill the chain oil tank. : Store the unit in the fan housing might still... / USA Storing the Machine : Take one turn of children and other unauthorized persons. 46 MS 290, MS 310, MS 390 To reduce risk of injury, wear eye and face protection and work gloves. : Use...
Product Instruction Manual
Page 53
... Chain sprocket Check Air filter Clean Replace Antivibration elements Inspect Have replaced by servicing dealer1) Cooling inlets Clean Cylinder fins Clean 1) STIHL recommends that the ...following maintenance intervals apply for normal operating conditions only If your daily working time is longer than normal or cutting conditions are difficult (very dusty work be done by a STIHL servicing dealer 2) see "Chain brake" X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X 52 MS 290, MS 310, MS...
... Chain sprocket Check Air filter Clean Replace Antivibration elements Inspect Have replaced by servicing dealer1) Cooling inlets Clean Cylinder fins Clean 1) STIHL recommends that the ...following maintenance intervals apply for normal operating conditions only If your daily working time is longer than normal or cutting conditions are difficult (very dusty work be done by a STIHL servicing dealer 2) see "Chain brake" X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X 52 MS 290, MS 310, MS...
Product Instruction Manual
Page 57
... the number of operating hours for which the engine has been shown to on the CARB Air Index Label indicates the terms: Extended = 300 hours Intermediate = 125 hours Moderate = 50 hours STIHL single cylinder two-stroke engine MS 290 Displacement Bore Stroke Idle speed 3.45 cu.in (56,5 cm3) 1.81 in (46...in (0.5 mm) Fuel / Oil System Diaphragm carburetor All position with integral fuel pump Fuel tank capacity 1.2 US pt (0,56 l) Fuel mixture See "Fuel" Air filter Prefilter (coarse filter) and bisectional box filter Chain lubrication Fully automatic, speed-controlled rotary piston oil pump.
... the number of operating hours for which the engine has been shown to on the CARB Air Index Label indicates the terms: Extended = 300 hours Intermediate = 125 hours Moderate = 50 hours STIHL single cylinder two-stroke engine MS 290 Displacement Bore Stroke Idle speed 3.45 cu.in (56,5 cm3) 1.81 in (46...in (0.5 mm) Fuel / Oil System Diaphragm carburetor All position with integral fuel pump Fuel tank capacity 1.2 US pt (0,56 l) Fuel mixture See "Fuel" Air filter Prefilter (coarse filter) and bisectional box filter Chain lubrication Fully automatic, speed-controlled rotary piston oil pump.
Product Instruction Manual
Page 61
...start enrichment system) Intake manifold Air filter Spark plug Magneto or electronic ignition system (ignition module) Catalytic converter (if applicable) Fasteners Where to make a claim for required maintenance at an authorized STIHL servicing dealer. STIHL Incorporated is scheduled only for any...STIHL servicing dealer and present the signed warranty card. The following : : repair or replacement required because of misuse, neglect or lack of the emission test. Mechanical diagnostic work shall be performed at and after the first scheduled replacement point. 60 MS 290, MS 310, MS...
...start enrichment system) Intake manifold Air filter Spark plug Magneto or electronic ignition system (ignition module) Catalytic converter (if applicable) Fasteners Where to make a claim for required maintenance at an authorized STIHL servicing dealer. STIHL Incorporated is scheduled only for any...STIHL servicing dealer and present the signed warranty card. The following : : repair or replacement required because of misuse, neglect or lack of the emission test. Mechanical diagnostic work shall be performed at and after the first scheduled replacement point. 60 MS 290, MS 310, MS...