Product Instruction Manual
Page 2
... Rope and Rewind Spring 44 Storing the 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...
... Rope and Rewind Spring 44 Storing the 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...
Product Instruction Manual
Page 8
... is particularly important to modify the controls or safety devices. !Warning! STIHL Oilomatic chain, guide bar and sprocket must move freely and always spring back to avoid... and cutting tool. a loose boot may lose control of injury. !Warning! Before replacing any bar and chain, see the appropriate section of injury from the fueling spot, outdoors only. Proper starting...is shut off). MS 290, MS 310, MS 390 7 it is damaged, improperly adjusted or maintained, or not completely or securely assembled. !Warning! English / USA Before Starting Take off the chain guard (scabbard) ...
... is particularly important to modify the controls or safety devices. !Warning! STIHL Oilomatic chain, guide bar and sprocket must move freely and always spring back to avoid... and cutting tool. a loose boot may lose control of injury. !Warning! Before replacing any bar and chain, see the appropriate section of injury from the fueling spot, outdoors only. Proper starting...is shut off). MS 290, MS 310, MS 390 7 it is damaged, improperly adjusted or maintained, or not completely or securely assembled. !Warning! English / USA Before Starting Take off the chain guard (scabbard) ...
Product Instruction Manual
Page 13
... with the cooling process of fire and burn injury. Such objects may be replaced, consult your muffler maintained by a STIHL servicing dealer. 12 MS 290, MS 310, MS 390 A modified or damaged muffler could damage the cutting attachment or AV system.... !Warning! Due to this process, the muffler does not cool down as rapidly as to whether the buffers should always be observed. !Warning! Your catalytic converter is shut off , damage the saw chain...
... with the cooling process of fire and burn injury. Such objects may be replaced, consult your muffler maintained by a STIHL servicing dealer. 12 MS 290, MS 310, MS 390 A modified or damaged muffler could damage the cutting attachment or AV system.... !Warning! Due to this process, the muffler does not cool down as rapidly as to whether the buffers should always be observed. !Warning! Your catalytic converter is shut off , damage the saw chain...
Product Instruction Manual
Page 15
... listed as complying in certain kickback situations. The computer derived angles for saws below 3.8 cubic inch (62 cm³) displacement to your STIHL chainsaw. 14 MS 290, MS 310, MS 390 other replacement bar and chain combinations marked in accordance with the computed kickback angle requirements of § 5.11 of ANSI B 175.12000 use a saw if the...
... listed as complying in certain kickback situations. The computer derived angles for saws below 3.8 cubic inch (62 cm³) displacement to your STIHL chainsaw. 14 MS 290, MS 310, MS 390 other replacement bar and chain combinations marked in accordance with the computed kickback angle requirements of § 5.11 of ANSI B 175.12000 use a saw if the...
Product Instruction Manual
Page 26
...use. !Warning! Excessive wear will increase the risk of fire and hearing loss. MS 290, MS 310, MS 390 25 Use the specified spark plug and make sure that the chain is stopped before doing any nonroad engine repair establishment or individual. Never test the ignition...or maintained properly or if nonapproved replacement parts were used and other injuries, it inoperable. Use of non-STIHL parts may deny coverage. !Warning! Keep the chain, bar and sprocket clean; Use only identical STIHL replacement parts for a component which the saw chains. !Warning! Strictly follow the...
...use. !Warning! Excessive wear will increase the risk of fire and hearing loss. MS 290, MS 310, MS 390 25 Use the specified spark plug and make sure that the chain is stopped before doing any nonroad engine repair establishment or individual. Never test the ignition...or maintained properly or if nonapproved replacement parts were used and other injuries, it inoperable. Use of non-STIHL parts may deny coverage. !Warning! Keep the chain, bar and sprocket clean; Use only identical STIHL replacement parts for a component which the saw chains. !Warning! Strictly follow the...
Product Instruction Manual
Page 40
...ignition, until you need it cools down . turn adjusting screw to "E" (Ematic position) : To increase oil feed - this Manual" 39 MS 290, MS 310, MS 390 * Special accessory * see "Guide to Using this helps avoid one-sided wear, especially at operating temperature during cutting work : Slacken off... for engine to vary the oil feed rate as it again. The chain contracts as required. : E = Ematic position, medium oil flow rate - If it is not slackened off the chain if you replace the chain - This protects engine-mounted components (ignition, carburetor) from sources of ...
...ignition, until you need it cools down . turn adjusting screw to "E" (Ematic position) : To increase oil feed - this Manual" 39 MS 290, MS 310, MS 390 * Special accessory * see "Guide to Using this helps avoid one-sided wear, especially at operating temperature during cutting work : Slacken off... for engine to vary the oil feed rate as it again. The chain contracts as required. : E = Ematic position, medium oil flow rate - If it is not slackened off the chain if you replace the chain - This protects engine-mounted components (ignition, carburetor) from sources of ...
Product Instruction Manual
Page 41
... Air Filter System Cleaning Air Filter Chain type Picco Rapid Rapid Rapid 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 If groove depth is a ...* see "Guide to suit different operating conditions by simply installing a choice of the groove - When there is less than specified: : Replace the guide bar. The drive link tangs will not ride on the bar rails. Fabric filter* For normal operating conditions and winter operation. ...
... Air Filter System Cleaning Air Filter Chain type Picco Rapid Rapid Rapid 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 If groove depth is a ...* see "Guide to suit different operating conditions by simply installing a choice of the groove - When there is less than specified: : Replace the guide bar. The drive link tangs will not ride on the bar rails. Fabric filter* For normal operating conditions and winter operation. ...
Product Instruction Manual
Page 43
... 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) counterclockwise up to the stop , i.e. 3/4 turn . Chain runs when engine is idling, have your saw ...checked and repaired by your servicing dealer. Erratic idling behavior, poor acceleration Idle setting 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...
... 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) counterclockwise up to the stop , i.e. 3/4 turn . Chain runs when engine is idling, have your saw ...checked and repaired by your servicing dealer. Erratic idling behavior, poor acceleration Idle setting 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...
Product Instruction Manual
Page 47
...fins and air filter. : If you take them and spray with a few drops of children and other unauthorized persons. 46 MS 290, MS 310, MS 390 STIHL BioPlus, completely fill the chain oil tank. : Store the unit in a dry and high or locked location, out of the reach of non-resinous oil...and cleaning solution properly in this helps prevent the carburetor diaphragms sticking together. : Remove the saw chain and guide bar, clean them out of rope off the rotor. : Fit the fan housing. Replacing a broken rewind spring : Remove the rope rotor. English / USA Storing the Machine : Take...
...fins and air filter. : If you take them and spray with a few drops of children and other unauthorized persons. 46 MS 290, MS 310, MS 390 STIHL BioPlus, completely fill the chain oil tank. : Store the unit in a dry and high or locked location, out of the reach of non-resinous oil...and cleaning solution properly in this helps prevent the carburetor diaphragms sticking together. : Remove the saw chain and guide bar, clean them out of rope off the rotor. : Fit the fan housing. Replacing a broken rewind spring : Remove the rope rotor. English / USA Storing the Machine : Take...
Product Instruction Manual
Page 48
.... - You can use two chains in (0,5 mm) since this would reduce the life of the chain brake. 001BA121 KN 001BA122 KN 5 62 1 4 3 62 1 : Use a screwdriver to ensure correct operation of the chain. Use only original STIHL chain sprockets to remove the E-clip (1). : Take off the crankshaft. MS 290, MS 310, MS 390 47 Replace the chain sprocket after using two Oilomatic...
.... - You can use two chains in (0,5 mm) since this would reduce the life of the chain brake. 001BA121 KN 001BA122 KN 5 62 1 4 3 62 1 : Use a screwdriver to ensure correct operation of the chain. Use only original STIHL chain sprockets to remove the E-clip (1). : Take off the crankshaft. MS 290, MS 310, MS 390 47 Replace the chain sprocket after using two Oilomatic...
Product Instruction Manual
Page 49
... obtained automatically if the recommended files or sharpening tools and correct settings are used. 48 MS 290, MS 310, MS 390 and in the links and damaged rivets. : Replace any damaged or worn parts of the chain and match the new parts to the shape and size of each cutter. Select file ...diameter according to comply with resulting risk of injury. 3/8 The chain pitch (e.g. 3/8") is incorrectly sharpened - It...
... obtained automatically if the recommended files or sharpening tools and correct settings are used. 48 MS 290, MS 310, MS 390 and in the links and damaged rivets. : Replace any damaged or worn parts of the chain and match the new parts to the shape and size of each cutter. Select file ...diameter according to comply with resulting risk of injury. 3/8 The chain pitch (e.g. 3/8") is incorrectly sharpened - It...
Product Instruction Manual
Page 53
... tank Clean, replace filter element Replace pickup body Fuel tank Clean Chain oil tank Clean Chain lubrication Check Inspect, also check sharpness Saw chain Check chain tension Sharpen Check (wear, damage) Guide bar 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 English...
... tank Clean, replace filter element Replace pickup body Fuel tank Clean Chain oil tank Clean Chain lubrication Check Inspect, also check sharpness Saw chain Check chain tension Sharpen Check (wear, damage) Guide bar 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 English...
Product Instruction Manual
Page 54
... Inspect Clean or replace Check X Chain catcher Replace Safety label Replace 1) STIHL recommends that the following maintenance intervals apply for normal operating conditions only. 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 hours of operation 3) not in all versions, market-specific before starting work 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...
... Inspect Clean or replace Check X Chain catcher Replace Safety label Replace 1) STIHL recommends that the following maintenance intervals apply for normal operating conditions only. 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 hours of operation 3) not in all versions, market-specific before starting work 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
Page 58
... (40, 45, 50, 63 or 70 cm) Duromatic with stellite tipped nose 16, 18, 20 or 25 in (40, 45, 50 or 63 cm) STIHL yellow-labeled chains: MS 290 For 0.325" pitch: Rapid Micro C (23 RMC, 25 RMC, 26 RMC) For 3/8" pitch: Rapid Micro (33 RM, 35 RM, 36 RM) Rapid-Super C (33... or 50 cm) STIHL low kickback chain1) (with green label): for 3/8" (9.32 mm) pitch: Rapid-Super C 3 (33 RSC3, 36 RSC3) Chain sprocket: 7-tooth for 3/8" pitch (spur sprocket) In order to comply with the kickback performance requirements of § 5.11 of ANSI Standard B 175.1-2000, do not use replacement saw chain unless it has been...
... (40, 45, 50, 63 or 70 cm) Duromatic with stellite tipped nose 16, 18, 20 or 25 in (40, 45, 50 or 63 cm) STIHL yellow-labeled chains: MS 290 For 0.325" pitch: Rapid Micro C (23 RMC, 25 RMC, 26 RMC) For 3/8" pitch: Rapid Micro (33 RM, 35 RM, 36 RM) Rapid-Super C (33... or 50 cm) STIHL low kickback chain1) (with green label): for 3/8" (9.32 mm) pitch: Rapid-Super C 3 (33 RSC3, 36 RSC3) Chain sprocket: 7-tooth for 3/8" pitch (spur sprocket) In order to comply with the kickback performance requirements of § 5.11 of ANSI Standard B 175.1-2000, do not use replacement saw chain unless it has been...
Product Instruction Manual
Page 59
... cases, by an authorized STIHL servicing dealer using original STIHL replacement parts. English / USA Special Accessories Ordering Spare Parts Maintenance and Repairs Contact your STIHL dealer for your saw model, serial number as well as the part numbers of the guide bar and saw chain in this Owner's Manual. 58 MS 290, MS 310, MS 390 Original STlHL parts...
... cases, by an authorized STIHL servicing dealer using original STIHL replacement parts. English / USA Special Accessories Ordering Spare Parts Maintenance and Repairs Contact your STIHL dealer for your saw model, serial number as well as the part numbers of the guide bar and saw chain in this Owner's Manual. 58 MS 290, MS 310, MS 390 Original STlHL parts...