Product Instruction Manual
Page 3
... any other power saw to reduce the risk of the Guide Bar 36 Air Filter System 36 Remove air filter 37 Cleaning the Air Filter 37 Engine Management 38 Adjusting the Carburetor 39 Spark Arresting Screen in Muffler 40 Spark Plug 41 Replacing the Starter Rope and Rewind Spring 42 Storing the Machine 43 Checking and Replacing the Chain Sprocket 44 Maintaining and Sharpening the Saw Chain Maintenance and Care Main Parts Specifications Special Accessories Ordering Spare Parts Maintenance and Repairs STIHL Incorporated Federal Emission Control Warranty Statement...
... any other power saw to reduce the risk of the Guide Bar 36 Air Filter System 36 Remove air filter 37 Cleaning the Air Filter 37 Engine Management 38 Adjusting the Carburetor 39 Spark Arresting Screen in Muffler 40 Spark Plug 41 Replacing the Starter Rope and Rewind Spring 42 Storing the Machine 43 Checking and Replacing the Chain Sprocket 44 Maintaining and Sharpening the Saw Chain Maintenance and Care Main Parts Specifications Special Accessories Ordering Spare Parts Maintenance and Repairs STIHL Incorporated Federal Emission Control Warranty Statement...
Product Instruction Manual
Page 4
chain oil quantity control Tension the chain Intake air preheating for winter operation Intake air for assistance. 2 MS 650, MS 660 Such paragraphs are supported by illustrations. Caution! As a result, engineering changes and improvements are explained in this manual. Depending on the model concerned, the following pictograms may be on the machine are made from those described in the illustration. chain oil Engaging and disengaging the STIHL Quickstop chain brake Direction...
chain oil quantity control Tension the chain Intake air preheating for winter operation Intake air for assistance. 2 MS 650, MS 660 Such paragraphs are supported by illustrations. Caution! As a result, engineering changes and improvements are explained in this manual. Depending on the model concerned, the following pictograms may be on the machine are made from those described in the illustration. chain oil Engaging and disengaging the STIHL Quickstop chain brake Direction...
Product Instruction Manual
Page 7
... from saw chain moving. In case of injury from escaping gas vapor and fumes, remove the fuel filler cap on "Main Parts." It may , in fact, be carried only in a manner that the machine is tight (no leaks) and that the controls and safety devices are authorized. Fuel Your STIHL power tool uses an oilgasoline mixture for use may be extremely dangerous. Gasoline is damaged. Fueling Instructions...
... from saw chain moving. In case of injury from escaping gas vapor and fumes, remove the fuel filler cap on "Main Parts." It may , in fact, be carried only in a manner that the machine is tight (no leaks) and that the controls and safety devices are authorized. Fuel Your STIHL power tool uses an oilgasoline mixture for use may be extremely dangerous. Gasoline is damaged. Fueling Instructions...
Product Instruction Manual
Page 8
... fuel cap, correctly position and tighten the fuel cap in relation to the top) to the closed position (with the raised positioning 6 MS 650, MS 660 immediately stop use of the cap into the opening , the cap is fixed and any spilled fuel before starting your authorized STIHL dealer for installation, turn ). English Select bare ground for fueling and move at least 10 feet (3 m) from the fueling spot before starting the engine...
... fuel cap, correctly position and tighten the fuel cap in relation to the top) to the closed position (with the raised positioning 6 MS 650, MS 660 immediately stop use of the cap into the opening , the cap is fixed and any spilled fuel before starting your authorized STIHL dealer for installation, turn ). English Select bare ground for fueling and move at least 10 feet (3 m) from the fueling spot before starting the engine...
Product Instruction Manual
Page 9
... of moisture, pitch, oil, fuel mix, grease or resin in your power tool for additional information. Warning! English Warning! For specific starting , particularly the throttle trigger, throttle trigger lockout, stop switch and cutting tool. If the chain becomes loose while cutting, shut off ). MS 650, MS 660 7 Check that could ignite combustible fumes and cause a fire. Before replacing any bar and chain, see the appropriate section of the chain is running! Start and operate your power tool if it is damaged...
... of moisture, pitch, oil, fuel mix, grease or resin in your power tool for additional information. Warning! English Warning! For specific starting , particularly the throttle trigger, throttle trigger lockout, stop switch and cutting tool. If the chain becomes loose while cutting, shut off ). MS 650, MS 660 7 Check that could ignite combustible fumes and cause a fire. Before replacing any bar and chain, see the appropriate section of the chain is running! Start and operate your power tool if it is damaged...
Product Instruction Manual
Page 10
... in injury to start the chain saw tightly between your instruction manual. Be sure that the guide bar and chain are working. At correct idle speed, the cutting tool should not move. English Warning! Do not drop start the saw allows you cannot set the correct idle speed, have your STIHL dealer check your unit with incorrect idle adjustment. This method is running cutting tool, do not wrap the starter rope around the handles. 8 MS 650, MS 660 Grip the...
... in injury to start the chain saw tightly between your instruction manual. Be sure that the guide bar and chain are working. At correct idle speed, the cutting tool should not move. English Warning! Do not drop start the saw allows you cannot set the correct idle speed, have your STIHL dealer check your unit with incorrect idle adjustment. This method is running cutting tool, do not wrap the starter rope around the handles. 8 MS 650, MS 660 Grip the...
Product Instruction Manual
Page 13
.... MS 650, MS 660 11 Always stop switch to important components (e.g. This may be replaced, consult your STIHL servicing dealer only. Antivibration elements should be flung off the engine immediately - Warning! The muffler and other parts while they may indicate damage, breakage or excessive wear. Warning! In the event of the cylinder, spark plug) become hot during normal operation may result in sets. The saw...
.... MS 650, MS 660 11 Always stop switch to important components (e.g. This may be replaced, consult your STIHL servicing dealer only. Antivibration elements should be flung off the engine immediately - Warning! The muffler and other parts while they may indicate damage, breakage or excessive wear. Warning! In the event of the cylinder, spark plug) become hot during normal operation may result in sets. The saw...
Product Instruction Manual
Page 15
... instruction manual or - must be equipped with the standard for Reducing the Risk of Kickback Injury STIHL recommends the use of injury, never use only the following cutting attachments: English - bar and chain combinations listed as a chain brake, low kickback chain, reduced kickback bar, etc. other factors. b) Saws with certain cutting attachments, - STIHL recommends the use on "Low kickback saw until the problem has been rectified. Warning! Warning! MS 650, MS 660 13 The type...
... instruction manual or - must be equipped with the standard for Reducing the Risk of Kickback Injury STIHL recommends the use of injury, never use only the following cutting attachments: English - bar and chain combinations listed as a chain brake, low kickback chain, reduced kickback bar, etc. other factors. b) Saws with certain cutting attachments, - STIHL recommends the use on "Low kickback saw until the problem has been rectified. Warning! Warning! MS 650, MS 660 13 The type...
Product Instruction Manual
Page 16
... a saw equipped with a Quickstop chain brake will deactivate the chain brake. 001BA174 KN Warning! Clutch slippage can be properly maintained and in the cut. English All STIHL chain saws are equipped with a Quickstop chain brake which can cause excessive heat, leading to help you identify the STIHL reduced kickback bars and low kickback chains. Warning! No Quickstop or other parts of ANSI B 175.1-2000 14 MS 650, MS 660
... a saw equipped with a Quickstop chain brake will deactivate the chain brake. 001BA174 KN Warning! Clutch slippage can be properly maintained and in the cut. English All STIHL chain saws are equipped with a Quickstop chain brake which can cause excessive heat, leading to help you identify the STIHL reduced kickback bars and low kickback chains. Warning! No Quickstop or other parts of ANSI B 175.1-2000 14 MS 650, MS 660
Product Instruction Manual
Page 18
... guide bar. Do not cut more than one log at all times. 12. Don't let go. 2. Don't overreach. 5. To avoid Pushback 1. Be alert for cutting. A = Pull-in A Pull-in frequently occurs when the bumper spike of the bar is used on any object. Do not cut limbs with the wood. 2. Be aware of the location of the chain saw control. Use extreme caution when cutting small size brush...
... guide bar. Do not cut more than one log at all times. 12. Don't let go. 2. Don't overreach. 5. To avoid Pushback 1. Be alert for cutting. A = Pull-in A Pull-in frequently occurs when the bumper spike of the bar is used on any object. Do not cut limbs with the wood. 2. Be aware of the location of the chain saw control. Use extreme caution when cutting small size brush...
Product Instruction Manual
Page 25
... connection between spark plug terminal and the ignition wire connector in good condition. Do not operate your machine with a removed spark plug, since uncontained sparking may create arcing that the risk of the brake system according to the following schedule: Heavy usage - Warning! annually. Store chain saw is greater in the instruction manual). Tighten all nuts, bolts and screws except the carburetor adjustment screws after each time it inoperable. replace worn sprockets...
... connection between spark plug terminal and the ignition wire connector in good condition. Do not operate your machine with a removed spark plug, since uncontained sparking may create arcing that the risk of the brake system according to the following schedule: Heavy usage - Warning! annually. Store chain saw is greater in the instruction manual). Tighten all nuts, bolts and screws except the carburetor adjustment screws after each time it inoperable. replace worn sprockets...
Product Instruction Manual
Page 28
... mixing-oil canisters only at the pump, first remove the canister from your area is lower, use in air cooled two-cycle engines. Fuel with the skin and avoid inhaling fuel vapor. Use only STIHL two-stroke engine oil or equivalent high-quality two-stroke engine oils that you use only in both water cooled and air cooled engines (e.g., outboard motors, snowmobiles, chain saws, mopeds, etc.). Your engine requires a mixture of 89 (R+M/2). Store in engines with a manually adjustable carburetor...
... mixing-oil canisters only at the pump, first remove the canister from your area is lower, use in air cooled two-cycle engines. Fuel with the skin and avoid inhaling fuel vapor. Use only STIHL two-stroke engine oil or equivalent high-quality two-stroke engine oils that you use only in both water cooled and air cooled engines (e.g., outboard motors, snowmobiles, chain saws, mopeds, etc.). Your engine requires a mixture of 89 (R+M/2). Store in engines with a manually adjustable carburetor...
Product Instruction Manual
Page 32
... the cover plate (special accessory) on , set switch to F and to switch off, return switch to the position for "summer operation" again! after starting, bring the engine up to operating temperature at increased idle speed (disengage chain brake!) N If engine trouble occurs, first check whether use of engine malfunction - N Replace the carburetor box cover and tighten the knob Air filter system N Retrofit new air filter if necessary - overheating! English Winter Operation At temperatures below +14 °F (-10 °C) Electric Handle Heating...
... the cover plate (special accessory) on , set switch to F and to switch off, return switch to the position for "summer operation" again! after starting, bring the engine up to operating temperature at increased idle speed (disengage chain brake!) N If engine trouble occurs, first check whether use of engine malfunction - N Replace the carburetor box cover and tighten the knob Air filter system N Retrofit new air filter if necessary - overheating! English Winter Operation At temperatures below +14 °F (-10 °C) Electric Handle Heating...
Product Instruction Manual
Page 36
... high revs with the starter - this period. see "Tensioning the Saw Chain". As all moving parts have retensioned it cools down . Chain cold Tension is off the bar. see "Spark plug" N Dry spark plug N Crank the engine several times with the chain brake engaged (chain locked) will quickly damage the shortblock and chain drive (clutch, chain brake). If it is not slackened off , it can damage the crankshaft and bearings. 34 MS 650, MS 660...
... high revs with the starter - this period. see "Tensioning the Saw Chain". As all moving parts have retensioned it cools down . Chain cold Tension is off the bar. see "Spark plug" N Dry spark plug N Crank the engine several times with the chain brake engaged (chain locked) will quickly damage the shortblock and chain drive (clutch, chain brake). If it is not slackened off , it can damage the crankshaft and bearings. 34 MS 650, MS 660...
Product Instruction Manual
Page 43
... the spark plug. English Spark Plug If engine is down on power, difficult to the stop position 0 N Turn the knob above the rear handle in the direction of the arrow and remove the carburetor box cover 137BA008 KN A N Clean dirty spark plug. Too much engine oil in operation. N Check electrode gap (A) and readjust if necessary - These factors cause deposits to form on the spark plug boot N Install air baffle N Mount carburetor box cover MS 650, MS 660 41 N Use only resistor type spark plugs...
... the spark plug. English Spark Plug If engine is down on power, difficult to the stop position 0 N Turn the knob above the rear handle in the direction of the arrow and remove the carburetor box cover 137BA008 KN A N Clean dirty spark plug. Too much engine oil in operation. N Check electrode gap (A) and readjust if necessary - These factors cause deposits to form on the spark plug boot N Install air baffle N Mount carburetor box cover MS 650, MS 660 41 N Use only resistor type spark plugs...
Product Instruction Manual
Page 52
... Box Cover Twist Lock 2 Spark Plug Boot 3 Carburetor Adjusting Screws 4 Handle Heating Switch (Depending on Model) 5 Chain Sprocket Cover 6 Chain Sprocket 7 Chain Brake 8 Chain Tensioner 9 Chain Catcher 10 Bumper Spike 11 Guide Bar 12 Oilomatic Saw Chain 13 Oil Filler Cap 14 Muffler with Spark Arresting Screen 15 Front Hand Guard 16 Front Handle (Handlebar) 17 Decompression Valve (Automatically Resetting) 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 Number 178BA004 KN 50 MS 650, MS 660
... Box Cover Twist Lock 2 Spark Plug Boot 3 Carburetor Adjusting Screws 4 Handle Heating Switch (Depending on Model) 5 Chain Sprocket Cover 6 Chain Sprocket 7 Chain Brake 8 Chain Tensioner 9 Chain Catcher 10 Bumper Spike 11 Guide Bar 12 Oilomatic Saw Chain 13 Oil Filler Cap 14 Muffler with Spark Arresting Screen 15 Front Hand Guard 16 Front Handle (Handlebar) 17 Decompression Valve (Automatically Resetting) 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 Number 178BA004 KN 50 MS 650, MS 660
Product Instruction Manual
Page 53
... engine. 19 Fuel Filler Cap For closing the oil tank. 14 Muffler with the ignition lead. 3 Carburetor Adjusting Screws For tuning the carburetor. 4 Handle Heating Switch (Depending on Model) For switching the electric handle heating on and off. 5 Chain Sprocket Cover Covers the clutch and chain sprocket. 6 Chain Sprocket The toothed wheel that drives the saw chain. 7 Chain Brake A device to reduce the risk of vibrations created by a chain when it slips off the bar. 10 Bumper Spike Toothed stop switch position. 21 Throttle Trigger Controls...
... engine. 19 Fuel Filler Cap For closing the oil tank. 14 Muffler with the ignition lead. 3 Carburetor Adjusting Screws For tuning the carburetor. 4 Handle Heating Switch (Depending on Model) For switching the electric handle heating on and off. 5 Chain Sprocket Cover Covers the clutch and chain sprocket. 6 Chain Sprocket The toothed wheel that drives the saw chain. 7 Chain Brake A device to reduce the risk of vibrations created by a chain when it slips off the bar. 10 Bumper Spike Toothed stop switch position. 21 Throttle Trigger Controls...
Product Instruction Manual
Page 55
... STIHL dealer for the recommended reduced kickback cutting attachments. When purchasing these parts, always quote the saw chains in accordance with green label) Rapid Super Comfort 3 (33 RSC3) Rapid Super Comfort 3 (36 RSC3) Pitch: 3/8" (9.32 mm) Drive link gauge: 0.050 in. (1.3 mm) or 0.063 in this Manual, ask your saw model, serial number as well as "low kickback" saw model, the part numbers and names of the guide bar...
... STIHL dealer for the recommended reduced kickback cutting attachments. When purchasing these parts, always quote the saw chains in accordance with green label) Rapid Super Comfort 3 (33 RSC3) Rapid Super Comfort 3 (36 RSC3) Pitch: 3/8" (9.32 mm) Drive link gauge: 0.050 in. (1.3 mm) or 0.063 in this Manual, ask your saw model, serial number as well as "low kickback" saw model, the part numbers and names of the guide bar...
Product Instruction Manual
Page 56
... years. The equipment engine must be used in some cases, by an authorized STIHL servicing dealer using original STIHL replacement parts. EPA standards for small non road engines. Your emission control system includes parts such as a 54 MS 650, MS 660 Also included may be designed, built and equipped, at no cost to ensure the performance of all scheduled maintenance. new 1997 and later model year small off...
... years. The equipment engine must be used in some cases, by an authorized STIHL servicing dealer using original STIHL replacement parts. EPA standards for small non road engines. Your emission control system includes parts such as a 54 MS 650, MS 660 Also included may be designed, built and equipped, at no cost to ensure the performance of all scheduled maintenance. new 1997 and later model year small off...
Product Instruction Manual
Page 57
... any authorized STIHL servicing dealer and present the signed warranty card. Emission test may be used for the cost of sale, to the owner. STIHL Incorporated is free from defects in a reasonable amount of the recommended 2-stroke fuel-oil MS 650, MS 660 55 Fuel Cap - Carburetor - Catalytic Converter (if applicable) - If any authorized STIHL servicing dealer or warranty station. Air Filter - Control Linkages - Spark Plug - Fuel Line Fittings - Any manufacturer-approved or equivalent replacement part may...
... any authorized STIHL servicing dealer and present the signed warranty card. Emission test may be used for the cost of sale, to the owner. STIHL Incorporated is free from defects in a reasonable amount of the recommended 2-stroke fuel-oil MS 650, MS 660 55 Fuel Cap - Carburetor - Catalytic Converter (if applicable) - If any authorized STIHL servicing dealer or warranty station. Air Filter - Control Linkages - Spark Plug - Fuel Line Fittings - Any manufacturer-approved or equivalent replacement part may...