Product Instruction Manual
Page 3
... the Saw Chain 44 Maintenance and Care 47 { Main Parts Specifications Special Accessories Ordering Spare Parts Maintenance and Repairs STIHL Incorporated Federal Emission Control Warranty Statement Trademarks MS 311, MS 391 English 49 Allow only persons who fully understand 51 this Manual to operate your chain saw to reduce the risk of personal injury. If the...
... the Saw Chain 44 Maintenance and Care 47 { Main Parts Specifications Special Accessories Ordering Spare Parts Maintenance and Repairs STIHL Incorporated Federal Emission Control Warranty Statement Trademarks MS 311, MS 391 English 49 Allow only persons who fully understand 51 this Manual to operate your chain saw to reduce the risk of personal injury. If the...
Product Instruction Manual
Page 4
... the safety instructions periodically. Indicates a risk of Federal Regulations 1910.266. 2 MS 311, MS 391 In addition to the operating instructions, this manual, please contact your machine differ from time to time. If the operating characteristics or the appearance of your STIHL dealer for "logging operations" at 29 Code of property damage, including damage to the machine or...
... the safety instructions periodically. Indicates a risk of Federal Regulations 1910.266. 2 MS 311, MS 391 In addition to the operating instructions, this manual, please contact your machine differ from time to time. If the operating characteristics or the appearance of your STIHL dealer for "logging operations" at 29 Code of property damage, including damage to the machine or...
Product Instruction Manual
Page 5
... diseases or physical conditions that unauthorized persons do not use it for cold weather use this manual. Keep the AV system well maintained. Keep the MS 311, MS 391 3 THE OPERATOR Physical Condition You must be aggravated by the machine to the use of control. Warning! An...elements will cut you have any condition that anyone using power tools on some STIHL powerheads, are recommended for other machines) exposing the operator to property, never let your power tool without the instruction manual. Warning! during a work , check with an anti-vibration ("AV") system...
... diseases or physical conditions that unauthorized persons do not use it for cold weather use this manual. Keep the AV system well maintained. Keep the MS 311, MS 391 3 THE OPERATOR Physical Condition You must be aggravated by the machine to the use of control. Warning! An...elements will cut you have any condition that anyone using power tools on some STIHL powerheads, are recommended for other machines) exposing the operator to property, never let your power tool without the instruction manual. Warning! during a work , check with an anti-vibration ("AV") system...
Product Instruction Manual
Page 7
...fuel caps. If fuel leakage is upright at least 10 feet (3 m) from your instruction manual). Insert the cap in the fuel tank opening lining up in a vehicle, properly secure ... vapor pressure may be equipped with the saw chain moving. Using the grip, turn ). MS 311, MS 391 5 the fuel system is damaged. When transporting it in the tank to cool before... chain guard (scabbard) over the chain and guide bar before starting your STIHL servicing dealer. Do not continue operating this STIHL cap, raise the grip on "Fuel" of the cap until the leak...
...fuel caps. If fuel leakage is upright at least 10 feet (3 m) from your instruction manual). Insert the cap in the fuel tank opening lining up in a vehicle, properly secure ... vapor pressure may be equipped with the saw chain moving. Using the grip, turn ). MS 311, MS 391 5 the fuel system is damaged. When transporting it in the tank to cool before... chain guard (scabbard) over the chain and guide bar before starting your STIHL servicing dealer. Do not continue operating this STIHL cap, raise the grip on "Fuel" of the cap until the leak...
Product Instruction Manual
Page 8
...maintain a firm grip and properly control your saw for proper condition and operation before starting methods reduce the risk of the instruction manual. STIHL Oilomatic chain, guide bar and sprocket must move freely and always spring ...STIHL combination wrench or other in the filler opening, the cap is running! Always check your instruction manual. a loose boot may cause arcing that the spark plug boot is damaged, improperly adjusted or maintained, or not completely or securely assembled. Before replacing any bar and chain, see the appropriate section of injury. 6 MS 311, MS...
...maintain a firm grip and properly control your saw for proper condition and operation before starting methods reduce the risk of the instruction manual. STIHL Oilomatic chain, guide bar and sprocket must move freely and always spring ...STIHL combination wrench or other in the filler opening, the cap is running! Always check your instruction manual. a loose boot may cause arcing that the spark plug boot is damaged, improperly adjusted or maintained, or not completely or securely assembled. Before replacing any bar and chain, see the appropriate section of injury. 6 MS 311, MS...
Product Instruction Manual
Page 9
...in an open area. At correct idle speed, the cutting tool should not move. During Operation Holding and controlling the power tool Always hold the unit firmly with the ground, put the... as the engine is very dangerous because you cannot set the correct idle speed, have your STIHL dealer check your arm on firm ground or other obstructions and objects, including the ground. To...in a locked (straight) position. Warning! Warning! MS 311, MS 391 7 Warning! Failure to your instruction manual. Important Adjustments Warning! Maintain good balance and secure footing.
...in an open area. At correct idle speed, the cutting tool should not move. During Operation Holding and controlling the power tool Always hold the unit firmly with the ground, put the... as the engine is very dangerous because you cannot set the correct idle speed, have your STIHL dealer check your arm on firm ground or other obstructions and objects, including the ground. To...in a locked (straight) position. Warning! Warning! MS 311, MS 391 7 Warning! Failure to your instruction manual. Important Adjustments Warning! Maintain good balance and secure footing.
Product Instruction Manual
Page 14
... it becomes for the operator to chain saw kickback. See the section on your powerhead with the standard for reducing the risk of kickback injury STIHL recommends the use on your STIHL chain saw kickback standard § 5.11 of the instruction manual or - Devices for use... of their effectiveness when they have been improperly maintained. ANSI B 175.1-2000 chain saw . 12 MS 311, MS 391 The computer derived angles ...
... it becomes for the operator to chain saw kickback. See the section on your powerhead with the standard for reducing the risk of kickback injury STIHL recommends the use on your STIHL chain saw kickback standard § 5.11 of the instruction manual or - Devices for use... of their effectiveness when they have been improperly maintained. ANSI B 175.1-2000 chain saw . 12 MS 311, MS 391 The computer derived angles ...
Product Instruction Manual
Page 15
...or green labels on the packaging are designed to reduce the risk of ANSI B 175.1-2000 MS 311, MS 391 13 Warning! Never run the chain saw chain and reduced kickback bars STIHL offers a variety of these Safety Precautions. Also make sure that the chain is pinched or ...62 cm³) displacement with green labeled bars and green labeled chains gives compliance with the operator. English Warning! In addition, removal of your chain saw equipped with the operation of your instruction manual. 001BA174 KN Warning! See the chapter of the chain brake. If the cutting position is...
...or green labels on the packaging are designed to reduce the risk of ANSI B 175.1-2000 MS 311, MS 391 13 Warning! Never run the chain saw chain and reduced kickback bars STIHL offers a variety of these Safety Precautions. Also make sure that the chain is pinched or ...62 cm³) displacement with green labeled bars and green labeled chains gives compliance with the operator. English Warning! In addition, removal of your chain saw equipped with the operation of your instruction manual. 001BA174 KN Warning! See the chapter of the chain brake. If the cutting position is...
Product Instruction Manual
Page 23
... to the maintenance chart in an area where the logs, limbs and roots are used , STIHL may cause serious or fatal injury. Pull out exposed and cleared logs first. However, if ...any maintenance or repair work not described in the direction of the operator of wood may be performed by your instruction manual. shaped supports on saw pinches, stop the engine and make bucking... Never hold the log. MAINTENANCE, REPAIR AND STORING Maintenance, replacement, or repair of a sawhorse. MS 311, MS 391 21 Always start relieving cut (1) at a time. Cut only one log at compression side....
... to the maintenance chart in an area where the logs, limbs and roots are used , STIHL may cause serious or fatal injury. Pull out exposed and cleared logs first. However, if ...any maintenance or repair work not described in the direction of the operator of wood may be performed by your instruction manual. shaped supports on saw pinches, stop the engine and make bucking... Never hold the log. MAINTENANCE, REPAIR AND STORING Maintenance, replacement, or repair of a sawhorse. MS 311, MS 391 21 Always start relieving cut (1) at a time. Cut only one log at compression side....
Product Instruction Manual
Page 24
... of the chain brake and can spot a dull chain when easy-to-cut wood becomes hard to properly perform its operating characteristics. Do not operate your STIHL chain saw is damaged, missing or modified. You can render it is missing or damaged. Tighten all nuts, bolts ... make sure it must be securely attached.) A loose connection between spark plug terminal and the ignition wire connector in the instruction manual). 22 MS 311, MS 391 Warning! Never test the ignition system with the spark plug boot removed from children. An improperly maintained muffler will vary depending...
... of the chain brake and can spot a dull chain when easy-to-cut wood becomes hard to properly perform its operating characteristics. Do not operate your STIHL chain saw is damaged, missing or modified. You can render it is missing or damaged. Tighten all nuts, bolts ... make sure it must be securely attached.) A loose connection between spark plug terminal and the ignition wire connector in the instruction manual). 22 MS 311, MS 391 Warning! Never test the ignition system with the spark plug boot removed from children. An improperly maintained muffler will vary depending...
Product Instruction Manual
Page 53
additional manual oil flow control Oil tank capacity: 11.8 oz (0.350 l) Weight English dry, without bar and chain MS 311: 14.1 lbs. (6.4 kg) MS 391: 14.1 lbs. (6.4 kg) Cutting attachment Recommended cutting attachments in compliance with Sec. 5.11 of operating hours for which the engine has ...been shown to meet Federal emission requirements. Category A = 300 hours B = 125 hours C = 50 hours Engine STIHL single cylinder two-stroke engine MS 311 Displacement: 3.60 cu. Rollomatic E guide bars STIHL reduced kickback guide bars ...
additional manual oil flow control Oil tank capacity: 11.8 oz (0.350 l) Weight English dry, without bar and chain MS 311: 14.1 lbs. (6.4 kg) MS 391: 14.1 lbs. (6.4 kg) Cutting attachment Recommended cutting attachments in compliance with Sec. 5.11 of operating hours for which the engine has ...been shown to meet Federal emission requirements. Category A = 300 hours B = 125 hours C = 50 hours Engine STIHL single cylinder two-stroke engine MS 311 Displacement: 3.60 cu. Rollomatic E guide bars STIHL reduced kickback guide bars ...
Product Instruction Manual
Page 55
... neglect or improper maintenance of this unit should carry out only the maintenance operations described in this manual for the period of time listed below provided there has been no cost to...enter your saw model, serial number as well as the carburetor and the ignition system. MS 311, MS 391 53 This will repair your small off -road equipment engine. When purchasing these parts...quote the saw model, the part numbers and names of sale to meet the U.S. STIHL Incorporated Federal Emission Control Warranty Statement Your Warranty Rights and Obligations The U.S. Your emission control...
... neglect or improper maintenance of this unit should carry out only the maintenance operations described in this manual for the period of time listed below provided there has been no cost to...enter your saw model, serial number as well as the carburetor and the ignition system. MS 311, MS 391 53 This will repair your small off -road equipment engine. When purchasing these parts...quote the saw model, the part numbers and names of sale to meet the U.S. STIHL Incorporated Federal Emission Control Warranty Statement Your Warranty Rights and Obligations The U.S. Your emission control...
User Manual
Page 4
... with two screws (1) and washers. The screws must not be passed to this power tool. MS 311, MS 391 3 Introduction and Safety Precautions 1.1 Introduction This service manual contains detailed descriptions of all assemblies. Refer to the latest edition of the relevant parts list to...mounting plate (2) 5910 850 1650 to check the part numbers of this manual. Technical information bulletins also supplement the parts list until a revised edition is not shown in the "STIHL Special Tools" manual. The above operation is already fitted. You should make use of movement @ 4.2 =...
... with two screws (1) and washers. The screws must not be passed to this power tool. MS 311, MS 391 3 Introduction and Safety Precautions 1.1 Introduction This service manual contains detailed descriptions of all assemblies. Refer to the latest edition of the relevant parts list to...mounting plate (2) 5910 850 1650 to check the part numbers of this manual. Technical information bulletins also supplement the parts list until a revised edition is not shown in the "STIHL Special Tools" manual. The above operation is already fitted. You should make use of movement @ 4.2 =...
User Manual
Page 5
... or disassembly. Avoid damaging the hose barb - do not use original STIHL replacement parts. Do not re-use fuel hoses after working on small parts. Spilled fuel must be tightened to the hose barbs, b 14. 4 MS 311, MS 391 Always replace damaged parts. Fuel system - Storing and disposing of ...which components are not approved and may appear alone on the fuel system and the engine. Other press fluids are heated for operations in the instruction manual. They can be overstretched during removal. Do not smoke or bring any fire, flame or other source of engine damage due...
... or disassembly. Avoid damaging the hose barb - do not use original STIHL replacement parts. Do not re-use fuel hoses after working on small parts. Spilled fuel must be tightened to the hose barbs, b 14. 4 MS 311, MS 391 Always replace damaged parts. Fuel system - Storing and disposing of ...which components are not approved and may appear alone on the fuel system and the engine. Other press fluids are heated for operations in the instruction manual. They can be overstretched during removal. Do not smoke or bring any fire, flame or other source of engine damage due...
User Manual
Page 6
...chain: Idle speed: Clutch: Clutch engages at: Engine housing leakage test at gauge pressure: under vacuum: 2.2 Fuel System 2.3 Ignition System 2.4 Chain Lubrication MS 311, MS 391 MS 311 59 cm3 47 mm 34 mm 3 kW (4 bhp) at 9,500 rpm 13,000 rpm 2,800 rpm Centrifugal clutch without linings 3,500 rpm 0.5 ... 0.5 bar MS 391 64.1 cm3 49 mm 34 mm 3.2 kW (4.4 bhp) at 9,500 rpm 13,000 rpm 2,800 rpm Centrifugal clutch without linings 3,500 rpm Carburetor leakage test at gauge pressure: Operation of tank vent at gauge pressure: Fuel: 0.8 bar 0.5 bar as specified in instruction manual Air gap between...
...chain: Idle speed: Clutch: Clutch engages at: Engine housing leakage test at gauge pressure: under vacuum: 2.2 Fuel System 2.3 Ignition System 2.4 Chain Lubrication MS 311, MS 391 MS 311 59 cm3 47 mm 34 mm 3 kW (4 bhp) at 9,500 rpm 13,000 rpm 2,800 rpm Centrifugal clutch without linings 3,500 rpm 0.5 ... 0.5 bar MS 391 64.1 cm3 49 mm 34 mm 3.2 kW (4.4 bhp) at 9,500 rpm 13,000 rpm 2,800 rpm Centrifugal clutch without linings 3,500 rpm Carburetor leakage test at gauge pressure: Operation of tank vent at gauge pressure: Fuel: 0.8 bar 0.5 bar as specified in instruction manual Air gap between...
User Manual
Page 21
...- 5. The brake band is measured in order if deceleration of the saw chain coming to a complete standstill. - If the chain brake does not operate properly, refer to simplify assembly of its seat (arrow). - Remove the clutch drum, b 4.1 - Its efficiency is now tensioned. : Remove the ... wide and activate the brake manually - The braking time is in terms of the machine. - Remove the cover (1). Pull the hand guard towards the handlebar to troubleshooting, b 3.2. 4903RA017 TG : Pry the brake band (1) out of the brake band. 20 MS 311, MS 391 the chain must come ...
...- 5. The brake band is measured in order if deceleration of the saw chain coming to a complete standstill. - If the chain brake does not operate properly, refer to simplify assembly of its seat (arrow). - Remove the clutch drum, b 4.1 - Its efficiency is now tensioned. : Remove the ... wide and activate the brake manually - The braking time is in terms of the machine. - Remove the cover (1). Pull the hand guard towards the handlebar to troubleshooting, b 3.2. 4903RA017 TG : Pry the brake band (1) out of the brake band. 20 MS 311, MS 391 the chain must come ...