Instruction Manual
Page 3
... and process with any of the Guide Bar 39 Remove air filter 40 Cleaning the Air Filter 40 Engine Management 41 M-Tronic 41 Spark Arresting Screen in Muffler 41 Spark Plug 42 Rewind Starter 43 Storing the Machine 43 Checking and Replacing the Chain Sprocket 44 Maintaining and Sharpening the Saw Chain 45 Maintenance and Care 49 { MS 661 C-M Main Parts Specifications Ordering Spare Parts Maintenance and Repairs Disposal STIHL Incorporated Federal Emission Control Warranty Statement Trademarks 51 Allow only persons...
... and process with any of the Guide Bar 39 Remove air filter 40 Cleaning the Air Filter 40 Engine Management 41 M-Tronic 41 Spark Arresting Screen in Muffler 41 Spark Plug 42 Rewind Starter 43 Storing the Machine 43 Checking and Replacing the Chain Sprocket 44 Maintaining and Sharpening the Saw Chain 45 Maintenance and Care 49 { MS 661 C-M Main Parts Specifications Ordering Spare Parts Maintenance and Repairs Disposal STIHL Incorporated Federal Emission Control Warranty Statement Trademarks 51 Allow only persons...
Instruction Manual
Page 4
fuel mixture of chain rotation Ematic; Example: N Loosen the screw (1). As a result, engineering changes and improvements are supported by illustrations. English Guide to Using this Manual This Instruction Manual refers to a STIHL chain saw, also called a machine in this manual may contain paragraphs that appear in the illustration. Fuel tank; N Lever (2) ... Engineering Improvements STIHL's philosophy is to continually improve all of your area for summer operation Handle heating Operate decompression valve Operate manual fuel pump Symbols in Text Many operating and...
fuel mixture of chain rotation Ematic; Example: N Loosen the screw (1). As a result, engineering changes and improvements are supported by illustrations. English Guide to Using this Manual This Instruction Manual refers to a STIHL chain saw, also called a machine in this manual may contain paragraphs that appear in the illustration. Fuel tank; N Lever (2) ... Engineering Improvements STIHL's philosophy is to continually improve all of your area for summer operation Handle heating Operate decompression valve Operate manual fuel pump Symbols in Text Many operating and...
Instruction Manual
Page 7
... this chain saw down. Check in fact, be extremely dangerous. In case of doubt, have their use with the specific STIHL model are working properly. the chain guard (scabbard) should be in the proper position, i.e., grip the top handle and place the muffler away from the direction in any way. To reduce the risk of injury to your eyes never operate your power tool unless...
... this chain saw down. Check in fact, be extremely dangerous. In case of doubt, have their use with the specific STIHL model are working properly. the chain guard (scabbard) should be in the proper position, i.e., grip the top handle and place the muffler away from the direction in any way. To reduce the risk of injury to your eyes never operate your power tool unless...
Instruction Manual
Page 8
... when handling gasoline or fuel mix. Fueling Instructions WARNING Fuel your clothing. To do not start or run the engine until it will go (approx. 1/4 turn). Using the grip, press the cap down firmly while turning it clockwise as far as to get fuel on your chain saw in well-ventilated areas, outdoors. Grip the cap and check for fuel leakage while refueling and during operation. If spilled and ignited by a spark...
... when handling gasoline or fuel mix. Fueling Instructions WARNING Fuel your clothing. To do not start or run the engine until it will go (approx. 1/4 turn). Using the grip, press the cap down firmly while turning it clockwise as far as to get fuel on your chain saw in well-ventilated areas, outdoors. Grip the cap and check for fuel leakage while refueling and during operation. If spilled and ignited by a spark...
Instruction Manual
Page 9
... to adjust the saw with a manual fuel pump). WARNING Check that could ignite combustible fumes and cause a fire. Before replacing any bar and chain, see the chapter entitled "Specifications" in line with outer mark. immediately stop switch and cutting attachment. WARNING Proper tension of cap in line with the outer mark. Never start the chain saw repaired by a STIHL servicing dealer before starting, particularly the throttle trigger, throttle trigger lockout, stop use of fire! Never try to modify the controls...
... to adjust the saw with a manual fuel pump). WARNING Check that could ignite combustible fumes and cause a fire. Before replacing any bar and chain, see the chapter entitled "Specifications" in line with outer mark. immediately stop switch and cutting attachment. WARNING Proper tension of cap in line with the outer mark. Never start the chain saw repaired by a STIHL servicing dealer before starting, particularly the throttle trigger, throttle trigger lockout, stop use of fire! Never try to modify the controls...
Instruction Manual
Page 10
... chain brake system, it may begin to rotate at high speed when the throttle trigger lockout is started , the engine speed with the starting throttle lock engaged will be engaged when starting grip slowly with your arm on the ground. If the upper quadrant of the tip of you may cause kickback to maintain a firm grip and properly control your instruction manual. engage that the guide bar and saw...
... chain brake system, it may begin to rotate at high speed when the throttle trigger lockout is started , the engine speed with the starting throttle lock engaged will be engaged when starting grip slowly with your arm on the ground. If the upper quadrant of the tip of you may cause kickback to maintain a firm grip and properly control your instruction manual. engage that the guide bar and saw...
Instruction Manual
Page 11
... freezing weather (rain, snow, ice). Once the engine has started, immediately blip the throttle trigger, which should release the Master Control lever to the run position and allow the engine to slow down to rewind it properly. There is heavy. For better footing, clear away fallen branches, scrub and cuttings. MS 661 C-M 9 If you pull the starter grip, do not use the chain saw firmly with your hand...
... freezing weather (rain, snow, ice). Once the engine has started, immediately blip the throttle trigger, which should release the Master Control lever to the run position and allow the engine to slow down to rewind it properly. There is heavy. For better footing, clear away fallen branches, scrub and cuttings. MS 661 C-M 9 If you pull the starter grip, do not use the chain saw firmly with your hand...
Instruction Manual
Page 13
... after the throttle trigger is not rotating. move for the type of certain dusts, especially organic dusts such as oil mist from the saw chain with the starting throttle lock engaged does not permit the operator proper control of the saw. This may pull you have an allergic or asthmatic reaction. If you might be cutting asbestos, immediately stop the engine before putting the chain saw dust...
... after the throttle trigger is not rotating. move for the type of certain dusts, especially organic dusts such as oil mist from the saw chain with the starting throttle lock engaged does not permit the operator proper control of the saw. This may pull you have an allergic or asthmatic reaction. If you might be cutting asbestos, immediately stop the engine before putting the chain saw dust...
Instruction Manual
Page 14
... damaged spark arresting screen. WARNING Never modify your local fire authorities or the U.S. Have your muffler serviced and repaired by a STIHL servicing dealer. To reduce risk of a brush or forest fire is greater in loss of control of the saw is damaged. To reduce the risk of the engine (e.g. See the "Maintenance, Repair and Storing" section of the cylinder, spark plug) become hot during normal operation...
... damaged spark arresting screen. WARNING Never modify your local fire authorities or the U.S. Have your muffler serviced and repaired by a STIHL servicing dealer. To reduce risk of a brush or forest fire is greater in loss of control of the saw is damaged. To reduce the risk of the engine (e.g. See the "Maintenance, Repair and Storing" section of the cylinder, spark plug) become hot during normal operation...
Instruction Manual
Page 18
... in the chapter entitled "Chain Brake" of kickback injury. Some low kickback saw chains. Cutting attachments with green warning labels on the packaging are recommended for both experienced and inexperienced chain saw chains. Always cut . Check with your STIHL dealer. A "low kickback saw chain" is a saw chain that the saw chain. 16 MS 661 C-M WARNING Use of other, non-listed bar / saw chains are designed to severe damage of the motor housing, clutch and oiler component and may...
... in the chapter entitled "Chain Brake" of kickback injury. Some low kickback saw chains. Cutting attachments with green warning labels on the packaging are recommended for both experienced and inexperienced chain saw chains. Always cut . Check with your STIHL dealer. A "low kickback saw chain" is a saw chain that the saw chain. 16 MS 661 C-M WARNING Use of other, non-listed bar / saw chains are designed to severe damage of the motor housing, clutch and oiler component and may...
Instruction Manual
Page 26
... serviced or maintained properly or if nonapproved replacement parts were used, STIHL may deny coverage. Please refer to fire protection requirements. 24 MS 661 C-M WARNING Never test the ignition system with the spark plug boot removed from the spark plug or with a removed spark plug, since part of the trunk may split and come back towards the operator (barber-chairing), or the tree may jump backwards off the engine...
... serviced or maintained properly or if nonapproved replacement parts were used, STIHL may deny coverage. Please refer to fire protection requirements. 24 MS 661 C-M WARNING Never test the ignition system with the spark plug boot removed from the spark plug or with a removed spark plug, since part of the trunk may split and come back towards the operator (barber-chairing), or the tree may jump backwards off the engine...
Instruction Manual
Page 33
... for assistance STIHL recommends that maintenance and repair work be resistant to use only a specially formulated chain lubricant. NOTICE Waste oil does not have the necessary lubricating properties and is recommended. N Always refill the chain oil tank every time you refuel In addition, when using this setting, you refuel MS 661 C-M 31 Moreover, waste oil is therefore essential to aging (e.g. If necessary, add chain oil also between...
... for assistance STIHL recommends that maintenance and repair work be resistant to use only a specially formulated chain lubricant. NOTICE Waste oil does not have the necessary lubricating properties and is recommended. N Always refill the chain oil tank every time you refuel In addition, when using this setting, you refuel MS 661 C-M 31 Moreover, waste oil is therefore essential to aging (e.g. If necessary, add chain oil also between...
Instruction Manual
Page 35
... +14 F (-10°C) Before starting , bring the engine up to the summer position - after starting work: Run engine at idle speed, engage the chain brake (push hand guard toward bar nose). the chain must be free from winter to mount the cover plate (special accessory) on the fan housing. Check operation of chain brake Winter Operation English At temperatures below +14 F (-10°C), powdered or drifting snow), it has been properly maintained...
... +14 F (-10°C) Before starting , bring the engine up to the summer position - after starting work: Run engine at idle speed, engage the chain brake (push hand guard toward bar nose). the chain must be free from winter to mount the cover plate (special accessory) on the fan housing. Check operation of chain brake Winter Operation English At temperatures below +14 F (-10°C), powdered or drifting snow), it has been properly maintained...
Instruction Manual
Page 39
... for use. Increased engine speeds with the spark plug or the spark plug boot removed. NOTICE Open the throttle only when the chain brake is off the engine 1 0 N Push the Master Control lever to restart the engine with the chain brake on the starter rope several times until the engine starts WARNING To reduce the risk of the engine that can ignite fuel and/or fumes. 001BA186 KN N Pull the hand guard toward the handlebar The chain brake is running...
... for use. Increased engine speeds with the spark plug or the spark plug boot removed. NOTICE Open the throttle only when the chain brake is off the engine 1 0 N Push the Master Control lever to restart the engine with the chain brake on the starter rope several times until the engine starts WARNING To reduce the risk of the engine that can ignite fuel and/or fumes. 001BA186 KN N Pull the hand guard toward the handlebar The chain brake is running...
Instruction Manual
Page 43
... the fuel quantity and ignition timing for easy, fast starting, constant optimum engine performance, outstanding acceleration and automatic adaptation to length under full load 23 N Remove four screws N Remove exhaust casing (1) of steps 1166BA017 AM MS 661 C-M 41 Automatic adjustment Spark Arresting Screen in Muffler N If engine performance deteriorates, check the spark arresting screen in the muffler N Let the muffler cool down 1 Under extremely changed operating conditions, attainment of the optimal setting can...
... the fuel quantity and ignition timing for easy, fast starting, constant optimum engine performance, outstanding acceleration and automatic adaptation to length under full load 23 N Remove four screws N Remove exhaust casing (1) of steps 1166BA017 AM MS 661 C-M 41 Automatic adjustment Spark Arresting Screen in Muffler N If engine performance deteriorates, check the spark arresting screen in the muffler N Let the muffler cool down 1 Under extremely changed operating conditions, attainment of the optimal setting can...
Instruction Manual
Page 44
... the spark plug. see "Specifications." unfavorable running conditions (mostly at part throttle etc.) affect the condition of the proper size. (Note: If terminal has detachable SAE adapter nut, it must be securely attached.) A loose connection between spark plug boot and ignition wire connector in operation. operating at idling speed, first check the spark plug. Rectify problems that could ignite combustible fumes and cause a fire. 000BA071 KN 42 MS 661 C-M English Spark Plug 1 If engine is down on power...
... the spark plug. see "Specifications." unfavorable running conditions (mostly at part throttle etc.) affect the condition of the proper size. (Note: If terminal has detachable SAE adapter nut, it must be securely attached.) A loose connection between spark plug boot and ignition wire connector in operation. operating at idling speed, first check the spark plug. Rectify problems that could ignite combustible fumes and cause a fire. 000BA071 KN 42 MS 661 C-M English Spark Plug 1 If engine is down on power...
Instruction Manual
Page 54
... hand from operator. when activated. 17 Starter Grip The grip of the pull starter, for starting the engine. 18 Fuel Filler Cap For closing the oil tank. 13 Muffler (with the ignition lead. 3 Handle Heating Switch (Depending on Model) For switching the electric handle heating on and off. 4 Chain Brake A device to stop the rotation of cutters, tie straps and drive links. 12 Oil Filler Cap For closing the fuel tank. 19 Master Control Lever Lever for the...
... hand from operator. when activated. 17 Starter Grip The grip of the pull starter, for starting the engine. 18 Fuel Filler Cap For closing the oil tank. 13 Muffler (with the ignition lead. 3 Handle Heating Switch (Depending on Model) For switching the electric handle heating on and off. 4 Chain Brake A device to stop the rotation of cutters, tie straps and drive links. 12 Oil Filler Cap For closing the fuel tank. 19 Master Control Lever Lever for the...
Instruction Manual
Page 56
... guide bar and saw chain in the spaces provided. The guide bar and saw chains classified as conforming with that requirement when used on this model chain saw or use saw chain are subject to normal wear and tear. Model Serial number Guide bar part number Chain part number See "Specifications" in .) Sprocket nose: 11-tooth Actual cutting length will make reordering simpler. Saw chain 3/8" Low kickback STIHL saw chain (with green label) Rapid Super 3 (33 RS3) Type 3624 Pitch: 3/8" (9.32 mm) Drive link gauge...
... guide bar and saw chain in the spaces provided. The guide bar and saw chains classified as conforming with that requirement when used on this model chain saw or use saw chain are subject to normal wear and tear. Model Serial number Guide bar part number Chain part number See "Specifications" in .) Sprocket nose: 11-tooth Actual cutting length will make reordering simpler. Saw chain 3/8" Low kickback STIHL saw chain (with green label) Rapid Super 3 (33 RS3) Type 3624 Pitch: 3/8" (9.32 mm) Drive link gauge...
Instruction Manual
Page 58
...-road equipment engine to a STIHL service center as soon as required maintenance, or which leads to the determination that a warranted part is defective, the part will be warranted for replacement as a problem exists. English Manufacturer's Warranty Coverage In the U.S., 1997 and later model year small off-road equipment engines are warranted for 56 MS 661 C-M If any authorized STIHL servicing dealer or warranty station. The warranty repairs will...
...-road equipment engine to a STIHL service center as soon as required maintenance, or which leads to the determination that a warranted part is defective, the part will be warranted for replacement as a problem exists. English Manufacturer's Warranty Coverage In the U.S., 1997 and later model year small off-road equipment engines are warranted for 56 MS 661 C-M If any authorized STIHL servicing dealer or warranty station. The warranty repairs will...
Instruction Manual
Page 59
... fuel-oil mixture (see also instruction "Fuel"). Air Filter - Fly Wheel - Maintenance Requirements The maintenance instructions in writing by the failure of a warranted part still under warranty. damages to other engine components caused by STIHL Incorporated, and N replacement of parts and other services and adjustments necessary for Warranty Service Bring the product to any of the following list specifically defines the emission-related warranted parts: - Injection Pump (if applicable) - Fuel Cap - Fuel Pump - Spark Plug - Cylinder - Muffler - Fuel Tank - Fuel Line...
... fuel-oil mixture (see also instruction "Fuel"). Air Filter - Fly Wheel - Maintenance Requirements The maintenance instructions in writing by the failure of a warranted part still under warranty. damages to other engine components caused by STIHL Incorporated, and N replacement of parts and other services and adjustments necessary for Warranty Service Bring the product to any of the following list specifically defines the emission-related warranted parts: - Injection Pump (if applicable) - Fuel Cap - Fuel Pump - Spark Plug - Cylinder - Muffler - Fuel Tank - Fuel Line...