Product Instruction Manual
Page 22
... a cable winch, block and tackle or tractor. Warning! Always keep to the operator. Limbing Limbing is cutting a log into sections. 001BA033 KN 20 MS 311, MS 391 Next, align the saw , you try to the tree at an angle. Seek the help of the falling tree. Be extremely cautious and ...avoid contacting the log or other reason does not fall , withdraw the bar, shut off the ground. you are poorly supported. When underbucking freely hanging limbs, a pinch may result or the limb may fall , since ...
... a cable winch, block and tackle or tractor. Warning! Always keep to the operator. Limbing Limbing is cutting a log into sections. 001BA033 KN 20 MS 311, MS 391 Next, align the saw , you try to the tree at an angle. Seek the help of the falling tree. Be extremely cautious and ...avoid contacting the log or other reason does not fall , withdraw the bar, shut off the ground. you are poorly supported. When underbucking freely hanging limbs, a pinch may result or the limb may fall , since ...
Product Instruction Manual
Page 31
...2 1 1 N Loosen screws (1) N Remove the shroud (2) 4903BA002 KN N Place the slide in the position r (winter operation) - At temperatures above +70 °F (+20 °C) N Ensure that the slide is subject to have it has been properly maintained and the hand guard has not been modified in from dirt...due to overheating 0001BA003 KN MS 311, MS 391 29 felling cut. The chain brake will operate only if it serviced and maintained regularly by trained personnel, such as your STIHL servicing dealer, at idle speed, engage the chain brake (push hand guard toward bar nose). the chain must ...
...2 1 1 N Loosen screws (1) N Remove the shroud (2) 4903BA002 KN N Place the slide in the position r (winter operation) - At temperatures above +70 °F (+20 °C) N Ensure that the slide is subject to have it has been properly maintained and the hand guard has not been modified in from dirt...due to overheating 0001BA003 KN MS 311, MS 391 29 felling cut. The chain brake will operate only if it serviced and maintained regularly by trained personnel, such as your STIHL servicing dealer, at idle speed, engage the chain brake (push hand guard toward bar nose). the chain must ...
Product Instruction Manual
Page 37
... depth - every time you sharpen the chain and every time you replace the chain - MS 311, MS 391 35 N turn the adjusting screw to vary the oil feed rate as required. with... KN Taking Care of machine) to "E" (Ematic position). Chain type Picco Rapid Rapid Rapid Pitch Minimum groove depth 3/8" P 0.20" (5.0 mm) 1/4" 0.16" (4.0 mm) 3/8"; 0.325" 0.24" (6.0 mm) 0.404" 0.28" (7.0 mm) If... and underside of wood and cutting techniques. 1 Use the adjusting screw (1) (on the bar rails. the cutters and tie straps will otherwise scrape along the bottom of oil are required...
... depth - every time you sharpen the chain and every time you replace the chain - MS 311, MS 391 35 N turn the adjusting screw to vary the oil feed rate as required. with... KN Taking Care of machine) to "E" (Ematic position). Chain type Picco Rapid Rapid Rapid Pitch Minimum groove depth 3/8" P 0.20" (5.0 mm) 1/4" 0.16" (4.0 mm) 3/8"; 0.325" 0.24" (6.0 mm) 0.404" 0.28" (7.0 mm) If... and underside of wood and cutting techniques. 1 Use the adjusting screw (1) (on the bar rails. the cutters and tie straps will otherwise scrape along the bottom of oil are required...
Product Instruction Manual
Page 51
...Parts 3 5 2 4 # 1 6 11 7 12 8 10 9 13 16 17 15 18 20 22 19 23 21 14 24 English 1 Shroud Lock 2 Carburetor Adjusting Screws 3 Spark Plug Boot ...Chain Brake 7 Chain Sprocket 8 Chain Sprocket Cover 9 Chain Catcher 10 Side Chain Tensioner 11 Bumper Spike 12 Guide Bar 13 Oilomatic Saw Chain 14 Oil Filler Cap 15 Muffler (with Spark Arresting Screen, not Fitted on all Markets) 16...Front Hand Guard 17 Front Handle (Handlebar) 18 Starter Grip 19 Fuel Filler Cap 20 Master Control Lever 21 Throttle Trigger 22 Throttle Trigger Lockout 23 Rear Handle 24 Rear Hand Guard # Serial...
...Parts 3 5 2 4 # 1 6 11 7 12 8 10 9 13 16 17 15 18 20 22 19 23 21 14 24 English 1 Shroud Lock 2 Carburetor Adjusting Screws 3 Spark Plug Boot ...Chain Brake 7 Chain Sprocket 8 Chain Sprocket Cover 9 Chain Catcher 10 Side Chain Tensioner 11 Bumper Spike 12 Guide Bar 13 Oilomatic Saw Chain 14 Oil Filler Cap 15 Muffler (with Spark Arresting Screen, not Fitted on all Markets) 16...Front Hand Guard 17 Front Handle (Handlebar) 18 Starter Grip 19 Fuel Filler Cap 20 Master Control Lever 21 Throttle Trigger 22 Throttle Trigger Lockout 23 Rear Handle 24 Rear Hand Guard # Serial...
Product Instruction Manual
Page 52
...of cutters, tie straps and drive links. 14 Oil Filler Cap For closing the fuel tank. 20 Master Control Lever Lever for the left hand from operator. Guide Bar Nose The exposed end of the guide bar. (not illustrated, see chapter "Tensioning the Saw Chain") Clutch Couples engine to chain sprocket .... 9 Chain Catcher Helps to reduce the risk of operator contact by the engine and cutting attachment to the operator's hands. (not illustrated) 50 MS 311, MS 391 English Definitions 1 Shroud Lock Lock for the right hand, located at the front of the saw. 18 Starter Grip The grip of the pull...
...of cutters, tie straps and drive links. 14 Oil Filler Cap For closing the fuel tank. 20 Master Control Lever Lever for the left hand from operator. Guide Bar Nose The exposed end of the guide bar. (not illustrated, see chapter "Tensioning the Saw Chain") Clutch Couples engine to chain sprocket .... 9 Chain Catcher Helps to reduce the risk of operator contact by the engine and cutting attachment to the operator's hands. (not illustrated) 50 MS 311, MS 391 English Definitions 1 Shroud Lock Lock for the right hand, located at the front of the saw. 18 Starter Grip The grip of the pull...
Product Instruction Manual
Page 53
... C = 50 hours Engine STIHL single cylinder two-stroke engine MS 311 Displacement: 3.60 cu. in. (64.1 cm3) Bore: 1.93 in. (49 mm) Stroke: 1.34 in. (34 mm) Engine power to ISO 7293: 4.4 hp (3.3 kW) at 9500 rpm Idle speed: 2800 rpm Maximum permissible speed with green label) Bar lengths: 16, 18, 20 in. (40, 45...
... C = 50 hours Engine STIHL single cylinder two-stroke engine MS 311 Displacement: 3.60 cu. in. (64.1 cm3) Bore: 1.93 in. (49 mm) Stroke: 1.34 in. (34 mm) Engine power to ISO 7293: 4.4 hp (3.3 kW) at 9500 rpm Idle speed: 2800 rpm Maximum permissible speed with green label) Bar lengths: 16, 18, 20 in. (40, 45...
User Manual
Page 2
...Wire 7.7.1 Testing 7.7.2 Removing and 17 Installing 7.7.3 Ground Wire 19 7.7.4 Contact Spring 7.8 Ignition System Troubleshooting 20 39 10.1 Master Control Lever 61 39 10.2 Throttle Trigger/Interlock 39 Lever 61 10.2.1 Choke Rod...20 5.3 Brake Lever 22 8.1 General 51 5.4 Cam Lever 24 8.2 Fan housing 51 5.5 Pins 25 8.2.1 Segment 51 5.6 Chain Tensioner 25 8.3 Pawls 51 5.7 Bar Mounting Studs 26 8.4 Rope Rotor 52 8.5 Starter Rope / Grip 53 8.6 Tensioning the Rewind Spring 54 8.7 Replacing the Rewind Spring 55 RA_542_00_01_01 MS 311, MS 391 q © ANDREAS STIHL...
...Wire 7.7.1 Testing 7.7.2 Removing and 17 Installing 7.7.3 Ground Wire 19 7.7.4 Contact Spring 7.8 Ignition System Troubleshooting 20 39 10.1 Master Control Lever 61 39 10.2 Throttle Trigger/Interlock 39 Lever 61 10.2.1 Choke Rod...20 5.3 Brake Lever 22 8.1 General 51 5.4 Cam Lever 24 8.2 Fan housing 51 5.5 Pins 25 8.2.1 Segment 51 5.6 Chain Tensioner 25 8.3 Pawls 51 5.7 Bar Mounting Studs 26 8.4 Rope Rotor 52 8.5 Starter Rope / Grip 53 8.6 Tensioning the Rewind Spring 54 8.7 Replacing the Rewind Spring 55 RA_542_00_01_01 MS 311, MS 391 q © ANDREAS STIHL...
User Manual
Page 6
...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 bar 0.5 bar MS 391 64.1 cm3 49 mm 34 mm 3.2 kW (4.4 bhp) at 9,...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 ignition module and fanwheel: Spark plug (resistor type): Electrode gap: 0.20...0.30 mm NGK BPMR 7 A BOSCH WSR6F 0.5 mm Speed-controlled oil pump with ...
...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 bar 0.5 bar MS 391 64.1 cm3 49 mm 34 mm 3.2 kW (4.4 bhp) at 9,...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 ignition module and fanwheel: Spark plug (resistor type): Electrode gap: 0.20...0.30 mm NGK BPMR 7 A BOSCH WSR6F 0.5 mm Speed-controlled oil pump with ...
User Manual
Page 30
...leak, coat the suspect area with pressure test, b 6.2.3 6.2.3 Pressure Test Carry out the same preparations as for at least 20 seconds, the engine housing is no more than 0.3 bar within 20 seconds, it over the studs : Fit the test flange (1) 1140 890 1200. 4903RA237 TG : Connect suction hose (1) ...the piston's induction stroke because there is airtight. - Continue with oil and pressurize the engine housing again. Install the carburetor, b 12.5 - MS 311, MS 391 29 Loosen the screws on the muffler and pull out the sealing plate. - After finishing the test, push the ring to the right ...
...leak, coat the suspect area with pressure test, b 6.2.3 6.2.3 Pressure Test Carry out the same preparations as for at least 20 seconds, the engine housing is no more than 0.3 bar within 20 seconds, it over the studs : Fit the test flange (1) 1140 890 1200. 4903RA237 TG : Connect suction hose (1) ...the piston's induction stroke because there is airtight. - Continue with oil and pressurize the engine housing again. Install the carburetor, b 12.5 - MS 311, MS 391 29 Loosen the screws on the muffler and pull out the sealing plate. - After finishing the test, push the ring to the right ...
User Manual
Page 85
... tank vent (1) out of its seat using the rib (arrow) for at least 20 seconds, the fuel tank, including the tank vent, is airtight. Open the tank...(filter). Reassemble all other parts in accordance with environmental requirements, b 1 84 MS 311, MS 391 Always install a new tank vent. 4903RA244 TG 4903RA108 TG 12.11 Fuel..., b 3.6 or b 3.7 Clean the fuel tank if necessary, - Dispose of 0.5 bar. The fine pores of the filter eventually become clogged with the fuel are retained by hand...problems with STIHL press fluid, b 14 - Open the tank cap and drain the fuel tank. -
... tank vent (1) out of its seat using the rib (arrow) for at least 20 seconds, the fuel tank, including the tank vent, is airtight. Open the tank...(filter). Reassemble all other parts in accordance with environmental requirements, b 1 84 MS 311, MS 391 Always install a new tank vent. 4903RA244 TG 4903RA108 TG 12.11 Fuel..., b 3.6 or b 3.7 Clean the fuel tank if necessary, - Dispose of 0.5 bar. The fine pores of the filter eventually become clogged with the fuel are retained by hand...problems with STIHL press fluid, b 14 - Open the tank cap and drain the fuel tank. -
User Manual
Page 90
... for repairs Removing oil seals Removing oil seal(s) Removing limiter caps Removing bar mounting studs Removing and installing decompression valve Removing pickup body Rem. No. Setting disk 21 Screwdriver bit, T 27 x 150 22 Hook 23 Assembly stand 24 Puller - MS 311, MS 391 89 Jaws (No. 3.1) 25 Puller 26 Stud puller M8 27 Socket... 893 8800 Application Adjusting carburetor Add-on for screwdriver (adjusting carburetor) IS-P screws (4 mm) Detaching springs on clutch shoes Holding machines for releasing only. Description 20 Screwdriver -
... for repairs Removing oil seals Removing oil seal(s) Removing limiter caps Removing bar mounting studs Removing and installing decompression valve Removing pickup body Rem. No. Setting disk 21 Screwdriver bit, T 27 x 150 22 Hook 23 Assembly stand 24 Puller - MS 311, MS 391 89 Jaws (No. 3.1) 25 Puller 26 Stud puller M8 27 Socket... 893 8800 Application Adjusting carburetor Add-on for screwdriver (adjusting carburetor) IS-P screws (4 mm) Detaching springs on clutch shoes Holding machines for releasing only. Description 20 Screwdriver -