Product Instruction Manual
Page 2
...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 to continually ...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, please contact your area if ...
...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 to continually ...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, please contact your area if ...
Product Instruction Manual
Page 41
... Pitch 3/8" P 1/4" 3/8"; 0.325" 0.404" Minimum groove depth 0.20" (5.0 mm) 0.16" (4.0 mm) 0.24" (6.0 mm) 0.28" (7.0 mm) The air filter system can be adapted to Using this Manual" 40 MS 290, MS 310, MS 390 Fabric filter* For normal operating conditions and winter operation. Dirty air filters reduce engine power, increase fuel consumption and make starting more difficult. the cutters and tie...
... Pitch 3/8" P 1/4" 3/8"; 0.325" 0.404" Minimum groove depth 0.20" (5.0 mm) 0.16" (4.0 mm) 0.24" (6.0 mm) 0.28" (7.0 mm) The air filter system can be adapted to Using this Manual" 40 MS 290, MS 310, MS 390 Fabric filter* For normal operating conditions and winter operation. Dirty air filters reduce engine power, increase fuel consumption and make starting more difficult. the cutters and tie...
Product Instruction Manual
Page 42
...air from the factory with STIHL universal cleaner or in a clean, non-flammable cleaning solution (e.g. warm soapy water) and dry all parts of the fundamental engine parameters and components (e.g. Never use a brush to adjust the engine idle speed within fine limits! MS 290, MS 310, MS... 390 41 Motor Management English / USA Adjusting the Carburetor 1 3 22 Exhaust emissions are controlled by the design of the filter. General information The carburetor comes from the inside outward. carburation, ...
...air from the factory with STIHL universal cleaner or in a clean, non-flammable cleaning solution (e.g. warm soapy water) and dry all parts of the fundamental engine parameters and components (e.g. Never use a brush to adjust the engine idle speed within fine limits! MS 290, MS 310, MS... 390 41 Motor Management English / USA Adjusting the Carburetor 1 3 22 Exhaust emissions are controlled by the design of the filter. General information The carburetor comes from the inside outward. carburation, ...
Product Instruction Manual
Page 43
...the engine is too lean. : Turn the low speed adjusting screw (L) counterclockwise until engine runs and accelerates smoothly. 139BA013 KN 139BA013 KN 42 MS 290, MS 310, MS 390 English / USA H 3/4 L 1/4 HL LA Adjusting idle speed Engine stops while idling : Turn the idle speed adjusting screw (LA...(LA) counterclockwise until chain begins to the stop - then turn screw another quarter turn . 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 screw (H) ...
...the engine is too lean. : Turn the low speed adjusting screw (L) counterclockwise until engine runs and accelerates smoothly. 139BA013 KN 139BA013 KN 42 MS 290, MS 310, MS 390 English / USA H 3/4 L 1/4 HL LA Adjusting idle speed Engine stops while idling : Turn the idle speed adjusting screw (LA...(LA) counterclockwise until chain begins to the stop - then turn screw another quarter turn . 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 screw (H) ...
Product Instruction Manual
Page 44
...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 Wrong fuel mix (too much engine oil in operation. * see "Guide to form on power, check the spark arresting...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 high altitude: : Check standard setting. : Warm up the engine. : Turn the high speed adjusting screw (H) ...
...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 Wrong fuel mix (too much engine oil in operation. * see "Guide to form on power, check the spark arresting...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 high altitude: : Check standard setting. : Warm up the engine. : Turn the high speed adjusting screw (H) ...
Product Instruction Manual
Page 45
...between spark plug boot and ignition wire connector in fuel mix. : Dirty air filter. : Unfavorable running conditions, e.g. see "Specifications". : Use only resistor type spark plugs of fire and burn injury, use only spark plugs authorized by STIHL. Fit a new spark plug after approx. 100 operating hours or earlier ...terminal (1) 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 the proper size. (Note: If terminal has detachable SAE adapter nut, it sideways. ...
...between spark plug boot and ignition wire connector in fuel mix. : Dirty air filter. : Unfavorable running conditions, e.g. see "Specifications". : Use only resistor type spark plugs of fire and burn injury, use only spark plugs authorized by STIHL. Fit a new spark plug after approx. 100 operating hours or earlier ...terminal (1) 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 the proper size. (Note: If terminal has detachable SAE adapter nut, it sideways. ...
Product Instruction Manual
Page 47
... must engage the lug. : Apply suitable tools (screwdriver, punch, etc.) to the cylinder fins and air filter. : If you take them and spray with corrosion inhibiting oil. : Thoroughly clean the unit, pay special...and secure in position. If the spring pops out of children and other unauthorized persons. 46 MS 290, MS 310, MS 390 For periods of about 3 months or longer: : Drain and clean the fuel tank ...in a well ventilated area. : Dispose of rope off the rotor. : Fit the fan housing. STIHL BioPlus, completely...
... must engage the lug. : Apply suitable tools (screwdriver, punch, etc.) to the cylinder fins and air filter. : If you take them and spray with corrosion inhibiting oil. : Thoroughly clean the unit, pay special...and secure in position. If the spring pops out of children and other unauthorized persons. 46 MS 290, MS 310, MS 390 For periods of about 3 months or longer: : Drain and clean the fuel tank ...in a well ventilated area. : Dispose of rope off the rotor. : Fit the fan housing. STIHL BioPlus, completely...
Product Instruction Manual
Page 53
...operation Chain brake Check operation Have checked by servicing dealer1)2) Check Pickup body/filter in fuel tank Clean, replace filter element Replace pickup body Fuel tank Clean Chain oil tank Clean Chain lubrication Check...Clean and turn over Deburr Replace Chain sprocket Check Air filter Clean Replace Antivibration elements Inspect Have replaced 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 390 If you only use the saw occasionally, ...
...operation Chain brake Check operation Have checked by servicing dealer1)2) Check Pickup body/filter in fuel tank Clean, replace filter element Replace pickup body Fuel tank Clean Chain oil tank Clean Chain lubrication Check...Clean and turn over Deburr Replace Chain sprocket Check Air filter Clean Replace Antivibration elements Inspect Have replaced 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 390 If you only use the saw occasionally, ...
Product Instruction Manual
Page 57
... EPA / CEPA: The Emission Compliance Period referred 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... 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. Category: A = 300 hours, B = 125 hours, C =...
... EPA / CEPA: The Emission Compliance Period referred 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... 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. Category: A = 300 hours, B = 125 hours, C =...
Product Instruction Manual
Page 61
... replacement point. 60 MS 290, MS 310, MS 390 Maintenance Requirements The maintenance instructions in writing by STIHL Incorporated, and : replacement of parts and other engine components caused by STIHL Incorporated at 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...
... replacement point. 60 MS 290, MS 310, MS 390 Maintenance Requirements The maintenance instructions in writing by STIHL Incorporated, and : replacement of parts and other engine components caused by STIHL Incorporated at 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...