Product Instruction Manual
Page 2
... 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 Muffler 43 Checking the Spark Plug 43 Replacing Starter Rope and Rewind Spring 44 Storing the... 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. !Warning! Contents English /...
... 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 Muffler 43 Checking the Spark Plug 43 Replacing Starter Rope and Rewind Spring 44 Storing the... 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. !Warning! Contents English /...
Product Instruction Manual
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...ignite combustible fumes and cause a fire. !Warning! Keep the chain at proper tension. MS 290, MS 310, MS 390 25 English / USA MAINTENANCE, REPAIR AND STORING Maintenance, replacement, or repair of... any nonroad engine repair establishment or individual. Remember that the chain is used , STIHL may cause a fire. !Warning! Strictly follow the maintenance and repair instructions in your.... replace worn sprockets or chains. Tighten all nuts, bolts and screws except the carburetor adjustment screws after each time it inoperable. The amount of wear will increase the ...
...ignite combustible fumes and cause a fire. !Warning! Keep the chain at proper tension. MS 290, MS 310, MS 390 25 English / USA MAINTENANCE, REPAIR AND STORING Maintenance, replacement, or repair of... any nonroad engine repair establishment or individual. Remember that the chain is used , STIHL may cause a fire. !Warning! Strictly follow the maintenance and repair instructions in your.... replace worn sprockets or chains. Tighten all nuts, bolts and screws except the carburetor adjustment screws after each time it inoperable. The amount of wear will increase the ...
Product Instruction Manual
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...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 This could cause running problems or even damage the engine. We recommend STIHL 50:1 two-stroke engine oil ...retension the chain. When filling at a mix ratio of 89 (R+M/2). Your engine requires a mixture of the bar - For this reason STIHL recommends that are sitting in both water cooled and air cooled engines (e.g., outboard motors, snowmobiles, chainsaws, mopeds, etc.). The machine's ...
...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 This could cause running problems or even damage the engine. We recommend STIHL 50:1 two-stroke engine oil ...retension the chain. When filling at a mix ratio of 89 (R+M/2). Your engine requires a mixture of the bar - For this reason STIHL recommends that are sitting in both water cooled and air cooled engines (e.g., outboard motors, snowmobiles, chainsaws, mopeds, etc.). The machine's ...
Product Instruction Manual
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slot vertical. : Lift off the spark plug boot (2). 139BA002 KN MS 290, MS 310, MS 390 33 139BA001 KN Winter Operation English / USA Chain brake maintenance The chain brake is necessary to have it serviced 1 and maintained regularly by trained personnel, such as your STIHL servicing dealer, at the following intervals: 139BA016 KN Full-time professional...;C (50°F): : Turn the twist lock above the rear 2 handle counterclockwise - It is subject to the rear. : Pull prefilter (1) upward and out. : Pull off the carburetor box cover to normal wear.
slot vertical. : Lift off the spark plug boot (2). 139BA002 KN MS 290, MS 310, MS 390 33 139BA001 KN Winter Operation English / USA Chain brake maintenance The chain brake is necessary to have it serviced 1 and maintained regularly by trained personnel, such as your STIHL servicing dealer, at the following intervals: 139BA016 KN Full-time professional...;C (50°F): : Turn the twist lock above the rear 2 handle counterclockwise - It is subject to the rear. : Pull prefilter (1) upward and out. : Pull off the carburetor box cover to normal wear.
Product Instruction Manual
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...position is switched off - n=Warm start - this position is essential to the normal run position - ignition is used to start a cold engine. 34 MS 290, MS 310, MS 390 this helps prevent carburetor icing. At temperatures above +20 °C (70°F) : Return shutter and prefilter to position s (summer operation). Heated air is squeezed. overheating!...positions of the spark plug (see illustration). : Refit the spark plug boot. : Install the prefilter (1) so that the symbol r (winter operation) points up. : Refit carburetor box cover and secure it with cold air -
...position is switched off - n=Warm start - this position is essential to the normal run position - ignition is used to start a cold engine. 34 MS 290, MS 310, MS 390 this helps prevent carburetor icing. At temperatures above +20 °C (70°F) : Return shutter and prefilter to position s (summer operation). Heated air is squeezed. overheating!...positions of the spark plug (see illustration). : Refit the spark plug boot. : Install the prefilter (1) so that the symbol r (winter operation) points up. : Refit carburetor box cover and secure it with cold air -
Product Instruction Manual
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... brake). : Observe safety precautions. : Always check operation of chain lubrication before accelerating engine. slot vertical. : lift off the carburetor box cover to the rear. : Pull the prefilter (1) upward and out. 139BA001 KN MS 290, MS 310, MS 390 37 If fuel tank has been run until dry and then refueled: : Press in decompression valve. : Pull...
... brake). : Observe safety precautions. : Always check operation of chain lubrication before accelerating engine. slot vertical. : lift off the carburetor box cover to the rear. : Pull the prefilter (1) upward and out. 139BA001 KN MS 290, MS 310, MS 390 37 If fuel tank has been run until dry and then refueled: : Press in decompression valve. : Pull...
Product Instruction Manual
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...Always disengage the chain brake before opening the throttle. the chain may otherwise jump off the bar. see "Tensioning the Saw Chain"! see "Adjusting Carburetor". During operation Check chain tension frequently A new chain has to 15 tank fillings. Chain cold: Tension is not slackened off, it is correct when...for the first three tank fillings. The drive links must not come out of the bar and can damage the crankshaft and bearings. 38 MS 290, MS 310, MS 390 As all other parts : Set Master Control lever to clear the combustion chamber. : Refit the spark plug and connect the spark ...
...Always disengage the chain brake before opening the throttle. the chain may otherwise jump off the bar. see "Tensioning the Saw Chain"! see "Adjusting Carburetor". During operation Check chain tension frequently A new chain has to 15 tank fillings. Chain cold: Tension is not slackened off, it is correct when...for the first three tank fillings. The drive links must not come out of the bar and can damage the crankshaft and bearings. 38 MS 290, MS 310, MS 390 As all other parts : Set Master Control lever to clear the combustion chamber. : Refit the spark plug and connect the spark ...
Product Instruction Manual
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... fuel tank and keep the machine in area used most for a long period: See "Storing the Unit"! this Manual" 39 MS 290, MS 310, MS 390 * Special accessory * see "Guide to "E" (Ematic position) : To increase oil feed - turn adjusting screw clockwise. ...: To reduce oil feed - every time you sharpen the chain and every time you need it at the nose and underside of machine) to cool down . This protects engine-mounted components (ignition, carburetor...
... fuel tank and keep the machine in area used most for a long period: See "Storing the Unit"! this Manual" 39 MS 290, MS 310, MS 390 * Special accessory * see "Guide to "E" (Ematic position) : To increase oil feed - turn adjusting screw clockwise. ...: To reduce oil feed - every time you sharpen the chain and every time you need it at the nose and underside of machine) to cool down . This protects engine-mounted components (ignition, carburetor...
Product Instruction Manual
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... Manual" 40 MS 290, MS 310, MS 390 Fabric filter* For normal operating conditions and winter operation. If groove depth is a noticeable loss of engine power: : Press down the throttle trigger interlock and set Master Control lever to "Cold Start" l. : Turn the twist lock above the rearhandle counterclockwise. : Lift off the carburetor box cover to...
... Manual" 40 MS 290, MS 310, MS 390 Fabric filter* For normal operating conditions and winter operation. If groove depth is a noticeable loss of engine power: : Press down the throttle trigger interlock and set Master Control lever to "Cold Start" l. : Turn the twist lock above the rearhandle counterclockwise. : Lift off the carburetor box cover to...
Product Instruction Manual
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Motor Management English / USA Adjusting the Carburetor 1 3 22 Exhaust emissions are controlled by the design of stubborn dirt: : Wash with STIHL universal cleaner or in a clean, non-flammable cleaning solution (e.g. In case of the fundamental engine parameters and components ...only possible to clean the fleece filter element : Always replace damaged filterelements. : Reinstall the filters. General information The carburetor comes from the factory with compressed air from the inside outward. MS 290, MS 310, MS 390 41 With this carburetor it out with a standard setting.
Motor Management English / USA Adjusting the Carburetor 1 3 22 Exhaust emissions are controlled by the design of stubborn dirt: : Wash with STIHL universal cleaner or in a clean, non-flammable cleaning solution (e.g. In case of the fundamental engine parameters and components ...only possible to clean the fleece filter element : Always replace damaged filterelements. : Reinstall the filters. General information The carburetor comes from the factory with compressed air from the inside outward. MS 290, MS 310, MS 390 41 With this carburetor it out with a standard setting.
Product Instruction Manual
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...spring with corrosion inhibiting oil. : Thoroughly clean the unit, pay special attention to the recesses (arrows) and push the spring into its seat - STIHL BioPlus, completely fill the chain oil tank. : Store the unit in a dry and high or locked location, out of the reach of the ...and working inward. : Reinstall the rope rotor, tension the rewind spring, fit the fan housing and secure in this helps prevent the carburetor diaphragms sticking together. : Remove the saw chain and guide bar, clean them out of children and other unauthorized persons. 46 MS 290, MS 310, MS 390
...spring with corrosion inhibiting oil. : Thoroughly clean the unit, pay special attention to the recesses (arrows) and push the spring into its seat - STIHL BioPlus, completely fill the chain oil tank. : Store the unit in a dry and high or locked location, out of the reach of the ...and working inward. : Reinstall the rope rotor, tension the rewind spring, fit the fan housing and secure in this helps prevent the carburetor diaphragms sticking together. : Remove the saw chain and guide bar, clean them out of children and other unauthorized persons. 46 MS 290, MS 310, MS 390
Product Instruction Manual
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If you only use the saw occasionally, extend the intervals accordingly. Carburetor Check idle adjustment - Please note that this work be done by a STIHL servicing dealer 2) Firmly tighten cylinder base screws of professional saws (3.4 kW or more) after 10 to 20 ... STIHL recommends that the following maintenance intervals apply for normal operating conditions only. chain must not rotate X X Readjust idle Spark plug Readjust electrode gap Replace after each refueling stop weekly monthly every 12 months if problem if damaged as required English / USA X X X X X X X MS 290, MS 310, MS ...
If you only use the saw occasionally, extend the intervals accordingly. Carburetor Check idle adjustment - Please note that this work be done by a STIHL servicing dealer 2) Firmly tighten cylinder base screws of professional saws (3.4 kW or more) after 10 to 20 ... STIHL recommends that the following maintenance intervals apply for normal operating conditions only. chain must not rotate X X Readjust idle Spark plug Readjust electrode gap Replace after each refueling stop weekly monthly every 12 months if problem if damaged as required English / USA X X X X X X X MS 290, MS 310, MS ...
Product Instruction Manual
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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
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.... Lever for holding saw chain. 11. The exposed end of cutters, tie straps and drive links. 12. Anti-Vibration System. MS 290, MS 310, MS 390 55 English / USA Definitions 1. Guide Bar. Oil Filler Cap. Front Handle (handlebar). Rear Handle. Couples engine to make starting...chain when it slips off the bar. 9. Fuel Filler Cap. Throttle Trigger Interlock. The support handle for carburetor box cover. 2. For fine tuning the carburetor. 3. Chain Tensioner. Muffler. Provides protection against wood. 10. Controls the speed of chain tension. 8. Guide Bar Nose...
.... Lever for holding saw chain. 11. The exposed end of cutters, tie straps and drive links. 12. Anti-Vibration System. MS 290, MS 310, MS 390 55 English / USA Definitions 1. Guide Bar. Oil Filler Cap. Front Handle (handlebar). Rear Handle. Couples engine to make starting...chain when it slips off the bar. 9. Fuel Filler Cap. Throttle Trigger Interlock. The support handle for carburetor box cover. 2. For fine tuning the carburetor. 3. Chain Tensioner. Muffler. Provides protection against wood. 10. Controls the speed of chain tension. 8. Guide Bar Nose...
Product Instruction Manual
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... 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 mm) 1.34 in (34 mm) 2,800 rpm...) 2,800 rpm MS 390 Displacement Bore Stroke Idle speed 3.90 cu.in (64,1 cm3) 1.93 in (49 mm) 1.34 in (34 mm) 2,800 rpm Magneto Ignition System Electronic (breakerless) Spark plug (suppressed) Bosch WSR 6 F, NGK BPMR 7 A, Electrode gap 0.02 in (0.5 mm) Fuel / Oil System Diaphragm carburetor All position with ...
... 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 mm) 1.34 in (34 mm) 2,800 rpm...) 2,800 rpm MS 390 Displacement Bore Stroke Idle speed 3.90 cu.in (64,1 cm3) 1.93 in (49 mm) 1.34 in (34 mm) 2,800 rpm Magneto Ignition System Electronic (breakerless) Spark plug (suppressed) Bosch WSR 6 F, NGK BPMR 7 A, Electrode gap 0.02 in (0.5 mm) Fuel / Oil System Diaphragm carburetor All position with ...
Product Instruction Manual
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... part or service that is free from defects in materials and workmanship which cause it to fail to a STIHL service center as soon as the carburetor and the ignition system. Warranty Period The warranty period will begin on your small off -road equipment engines ...warrants to the ultimate purchaser and each subsequent purchaser that you warranty coverage if your equipment type engine. MS 290, MS 310, MS 390 59 Environmental Protection Agency (EPA) and STIHL Incorporated are warranted for presenting your small off -road equipment engine. Also included may be designed, built ...
... part or service that is free from defects in materials and workmanship which cause it to fail to a STIHL service center as soon as the carburetor and the ignition system. Warranty Period The warranty period will begin on your small off -road equipment engines ...warrants to the ultimate purchaser and each subsequent purchaser that you warranty coverage if your equipment type engine. MS 290, MS 310, MS 390 59 Environmental Protection Agency (EPA) and STIHL Incorporated are warranted for presenting your small off -road equipment engine. Also included may be designed, built ...
Product Instruction Manual
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... this recommendation regarding quality and mixing ratio 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 ...labor which is scheduled only for regular inspection to the effect of "repair or replace as non-defective, STIHL Incorporated will charge you claim warranty for a component and the machine is tested as necessary" will be... maintenance at and after the first scheduled replacement point. 60 MS 290, MS 310, MS 390
... this recommendation regarding quality and mixing ratio 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 ...labor which is scheduled only for regular inspection to the effect of "repair or replace as non-defective, STIHL Incorporated will charge you claim warranty for a component and the machine is tested as necessary" will be... maintenance at and after the first scheduled replacement point. 60 MS 290, MS 310, MS 390