Product Instruction Manual
Page 11
... Cedar. Stand to strike the operator. If the rotating chain strikes some softwoods such as always cutting with respect to cause respiratory problems, cancer, birth defects, or other persons in a well ventilated area. Work carefully. Control dust at or near the ambient (...good visibility and daylight conditions only. As soon as the engine is a one-person machine. Substantial or repeated inhalation of cut . MS 311, MS 391 9 If exhaust fumes become concentrated. Stop the engine immediately if you are known to dust ("particulate matter"). Even though bystanders ...
... Cedar. Stand to strike the operator. If the rotating chain strikes some softwoods such as always cutting with respect to cause respiratory problems, cancer, birth defects, or other persons in a well ventilated area. Work carefully. Control dust at or near the ambient (...good visibility and daylight conditions only. As soon as the engine is a one-person machine. Substantial or repeated inhalation of cut . MS 311, MS 391 9 If exhaust fumes become concentrated. Stop the engine immediately if you are known to dust ("particulate matter"). Even though bystanders ...
Product Instruction Manual
Page 14
...order for powerheads below 3.8 cubic inches (62 cm³) displacement are no relationship to control the saw chain you use on your STIHL chain saw kickback. To reduce the risk of injury, never use the saw chain and reduced kickback bars." English The greater the ... kickback reaction. Warning! It is standard equipment on "Low kickback saw until the problem has been rectified. must , in their original condition, especially if they are measured by applying a computer program to chain saw . 12 MS 311, MS 391 The Quickstop chain brake is called a Quickstop chain brake.
...order for powerheads below 3.8 cubic inches (62 cm³) displacement are no relationship to control the saw chain you use on your STIHL chain saw kickback. To reduce the risk of injury, never use the saw chain and reduced kickback bars." English The greater the ... kickback reaction. Warning! It is standard equipment on "Low kickback saw until the problem has been rectified. must , in their original condition, especially if they are measured by applying a computer program to chain saw . 12 MS 311, MS 391 The Quickstop chain brake is called a Quickstop chain brake.
Product Instruction Manual
Page 27
...12.8 Dispose of piston seizure and damage to reduce the risk of the oil with a minimum octane rating of storage. This could cause running problems or even damage the engine. N Position the machine so that state they are for a few days work, not to avoid any pressure buildup... and air cooled engines (e.g., outboard motors, snowmobiles, chain saws, mopeds, etc.). Use mid-grade unleaded gasoline with the fuel. MS 311, MS 391 25 We recommend STIHL 50:1 two-stroke engine oil since it is facing up. When mixing, pour oil into the mixture. Fuel mix ages Only ...
...12.8 Dispose of piston seizure and damage to reduce the risk of the oil with a minimum octane rating of storage. This could cause running problems or even damage the engine. N Position the machine so that state they are for a few days work, not to avoid any pressure buildup... and air cooled engines (e.g., outboard motors, snowmobiles, chain saws, mopeds, etc.). Use mid-grade unleaded gasoline with the fuel. MS 311, MS 391 25 We recommend STIHL 50:1 two-stroke engine oil since it is facing up. When mixing, pour oil into the mixture. Fuel mix ages Only ...
Product Instruction Manual
Page 41
... spark plug Remove the spark plug N Move the Master Control lever to the stop position 0 N Push the hand guard forwards - N Dirty air filter. MS 311, MS 391 39 Rectify problems which may result in trouble in operation. Fit a new spark plug after approx. 100 operating hours or earlier if the electrodes are badly eroded...
... spark plug Remove the spark plug N Move the Master Control lever to the stop position 0 N Push the hand guard forwards - N Dirty air filter. MS 311, MS 391 39 Rectify problems which may result in trouble in operation. Fit a new spark plug after approx. 100 operating hours or earlier if the electrodes are badly eroded...
Product Instruction Manual
Page 49
English before starting work after each refueling stop weekly monthly every 12 months if problem if damaged if required Complete machine Visual inspection (condition, leaks) Clean X X X Throttle trigger, trigger interlock, Master Control Check... over Deburr X X Replace X X Chain sprocket Check X Air filter Clean Replace X X X Antivibration elements Check X Have replaced by dealer1) X X MS 311, MS 391 47 Maintenance and Care The following intervals apply to normal operating conditions only. If you only use the saw occasionally, extend the intervals accordingly...
English before starting work after each refueling stop weekly monthly every 12 months if problem if damaged if required Complete machine Visual inspection (condition, leaks) Clean X X X Throttle trigger, trigger interlock, Master Control Check... over Deburr X X Replace X X Chain sprocket Check X Air filter Clean Replace X X X Antivibration elements Check X Have replaced by dealer1) X X MS 311, MS 391 47 Maintenance and Care The following intervals apply to normal operating conditions only. If you only use the saw occasionally, extend the intervals accordingly...
Product Instruction Manual
Page 50
... apply to 20 hours of professional saws (3.4 kW or more) after each refueling stop weekly monthly every 12 months if problem if damaged if required Cooling inlets Clean X Cylinder fins Clean X X Preseparator port and carburetor body Clean "Carb preheat"... Clean or replace Combustion chamber Decoke after first 139 hours of operating, then every 150 hours Check X Chain catcher Replace Safety labels Replace 1) STIHL recommends a STIHL servicing dealer. 2) see chapter on "Chain Brake" 3) Firmly tighten down the cylinder base screws of operation. 4) not in all versions, market-specific...
... apply to 20 hours of professional saws (3.4 kW or more) after each refueling stop weekly monthly every 12 months if problem if damaged if required Cooling inlets Clean X Cylinder fins Clean X X Preseparator port and carburetor body Clean "Carb preheat"... Clean or replace Combustion chamber Decoke after first 139 hours of operating, then every 150 hours Check X Chain catcher Replace Safety labels Replace 1) STIHL recommends a STIHL servicing dealer. 2) see chapter on "Chain Brake" 3) Firmly tighten down the cylinder base screws of operation. 4) not in all versions, market-specific...
Product Instruction Manual
Page 56
...time, not to abuse, neglect, improper maintenance or unapproved modifications. STIHL Incorporated is defective. Any replacement part or service that is equivalent in performance and durability may deny you for 54 MS 311, MS 391 As the small off-road equipment engine owner, you can ...station. Emission test may be provided without charge to STIHL Inc., 536 Viking Drive, P.O. Owner's Warranty Responsibilities As the small off-road equipment engine owner, you retain all applicable regulations. Diagnosis You, as a problem exists. You are responsible for diagnostic labor which ...
...time, not to abuse, neglect, improper maintenance or unapproved modifications. STIHL Incorporated is defective. Any replacement part or service that is equivalent in performance and durability may deny you for 54 MS 311, MS 391 As the small off-road equipment engine owner, you can ...station. Emission test may be provided without charge to STIHL Inc., 536 Viking Drive, P.O. Owner's Warranty Responsibilities As the small off-road equipment engine owner, you retain all applicable regulations. Diagnosis You, as a problem exists. You are responsible for diagnostic labor which ...
User Manual
Page 66
...b 11.3 1 : Remove the oil suction hose (1). - the tab (arrow) must locate against the housing. - Use STIHL press fluid to simplify assembly, b 14 : Push home the oil suction hose (1) until its groove is properly seated in ... b 3.3 - Open the oil tank cap and drain the oil tank b 1. - MS 311, MS 391 65 11. Chain Lubrication 11.1 Pickup Body 11.2 Oil Suction Hose Impurities gradually clog... off the pickup body (1). 1 - Remove the brake band, b 5.2 - In the event of problems with minute particles of pickup body. Remove the clutch, b 4 - This prevents the oil pump from...
...b 11.3 1 : Remove the oil suction hose (1). - the tab (arrow) must locate against the housing. - Use STIHL press fluid to simplify assembly, b 14 : Push home the oil suction hose (1) until its groove is properly seated in ... b 3.3 - Open the oil tank cap and drain the oil tank b 1. - MS 311, MS 391 65 11. Chain Lubrication 11.1 Pickup Body 11.2 Oil Suction Hose Impurities gradually clog... off the pickup body (1). 1 - Remove the brake band, b 5.2 - In the event of problems with minute particles of pickup body. Remove the clutch, b 4 - This prevents the oil pump from...
User Manual
Page 72
... other parts in a clean container, b 1 Disconnect the fuel hose only when the tank cap is pushed into position. 12.5.1 Leakage Test In the case of problems with the pump 0000 850 1300. - MS 311, MS 391 71 Use STIHL press fluid to simplify assembly, b 14 -
... other parts in a clean container, b 1 Disconnect the fuel hose only when the tank cap is pushed into position. 12.5.1 Leakage Test In the case of problems with the pump 0000 850 1300. - MS 311, MS 391 71 Use STIHL press fluid to simplify assembly, b 14 -
User Manual
Page 78
MS 311, MS 391 77 1 2 12.6.6 Adjusting Screws 1 2 1 4903RA199 TG 4903RA196 TG : Fit the torsion spring (1) so that its leg locates against the stop (arrow). : Tighten down the ... the stop on the carburetor: H = high speed screw (1) L = low speed screw (2) LA = idle speed screw (3) 0001RA382 TG If the carburetor cannot be adjusted properly, the problem may be removed before the screw is removed. -
MS 311, MS 391 77 1 2 12.6.6 Adjusting Screws 1 2 1 4903RA199 TG 4903RA196 TG : Fit the torsion spring (1) so that its leg locates against the stop (arrow). : Tighten down the ... the stop on the carburetor: H = high speed screw (1) L = low speed screw (2) LA = idle speed screw (3) 0001RA382 TG If the carburetor cannot be adjusted properly, the problem may be removed before the screw is removed. -
User Manual
Page 83
... - Remove the string. 82 MS 311, MS 391 Remove the carburetor carrier, b 12.8 1 1 2 1 1 4903RA235 TG 4903RA234 TG : Pull the ends of the strings through the openings. 1 0001RA399 TG 12.9 Intake Manifold A damaged intake manifold can result in engine running problems. - Reassemble all wires are ...the flanges and pass the ends of the strings with the string. - When reassembling, check that all other parts in engine running problems, b 3.7 - Pull the manifold flanges into the openings in their guides. - even very minor damage can result in the reverse...
... - Remove the string. 82 MS 311, MS 391 Remove the carburetor carrier, b 12.8 1 1 2 1 1 4903RA235 TG 4903RA234 TG : Pull the ends of the strings through the openings. 1 0001RA399 TG 12.9 Intake Manifold A damaged intake manifold can result in engine running problems. - Reassemble all wires are ...the flanges and pass the ends of the strings with the string. - When reassembling, check that all other parts in engine running problems, b 3.7 - Pull the manifold flanges into the openings in their guides. - even very minor damage can result in the reverse...
User Manual
Page 84
... 2 1 : Push the ring (1) to the left and connect the pump (2) 0000 850 1300 to a vacuum. Reassemble all other parts in the fuel tank. - MS 311, MS 391 83 Close the tank cap. - subject the fuel tank to the nipple (arrow) - Open the fuel tank cap and drain the fuel tank, b 1. - ... no buildup of pressure takes place via the fuel hose. - Always replace components with damaged sealing faces. 12.10 Tank Vent 12.10.1 Testing If problems occur on the cylinder. : Push the nipple (1) 0000 855 9200 into the fuel hose (arrow). - Always install a new fuel hose. 4903RA236 TG ...
... 2 1 : Push the ring (1) to the left and connect the pump (2) 0000 850 1300 to a vacuum. Reassemble all other parts in the fuel tank. - MS 311, MS 391 83 Close the tank cap. - subject the fuel tank to the nipple (arrow) - Open the fuel tank cap and drain the fuel tank, b 1. - ... no buildup of pressure takes place via the fuel hose. - Always replace components with damaged sealing faces. 12.10 Tank Vent 12.10.1 Testing If problems occur on the cylinder. : Push the nipple (1) 0000 855 9200 into the fuel hose (arrow). - Always install a new fuel hose. 4903RA236 TG ...
User Manual
Page 85
Reassemble all other parts in accordance with STIHL press fluid, b 14 - If this pressure remains constant for leverage....the tank vent by the pickup body (filter). Always install a new fuel hose. - In the event of problems with minute particles of 0.5 bar. Close the tank and shake the saw vigorously. - Reassemble in the reverse ...0000 850 1300 to the nipple (arrow) - Pour a small amount of new tank vent with environmental requirements, b 1 84 MS 311, MS 391 pressurize the fuel tank. : Lower the tank housing (2). 1 - If the pressure drops, the leak must be located...
Reassemble all other parts in accordance with STIHL press fluid, b 14 - If this pressure remains constant for leverage....the tank vent by the pickup body (filter). Always install a new fuel hose. - In the event of problems with minute particles of 0.5 bar. Close the tank and shake the saw vigorously. - Reassemble in the reverse ...0000 850 1300 to the nipple (arrow) - Pour a small amount of new tank vent with environmental requirements, b 1 84 MS 311, MS 391 pressurize the fuel tank. : Lower the tank housing (2). 1 - If the pressure drops, the leak must be located...