Stihl MS 661 C-M Instruction Manual

MS 661 C-M

Instruction Manual2 - 30

0000-GXX-A387-A0

English

Contents

1 Introduction................................................. 2

2 Guide to Using this Manual.........................2

3 Overview..................................................... 2

4 Safety Precautions......................................4

5 Preparing the Saw for Operation.............. 10

6 Assembling the Saw................................. 11

7 Engaging and Disengaging the Chain Brake

.................................................................. 12

8 Mixing Fuel and Refueling the Chainsaw..13

9 Starting and Stopping the Engine............. 14

10 Checking the Saw..................................... 16

11 Operating the Saw.................................... 17

12 After Finishing Work..................................23

13 Transporting..............................................23

14 Storing.......................................................23

15 Cleaning....................................................23

16 Maintenance............................................. 25

17 Repairing...................................................26

18 Troubleshooting........................................ 26

19 Specifications............................................27

20 Bar and Chain Combinations.................... 28

21 Spare Parts and Accessories....................29

22 Disposal.................................................... 29

23 EC Declaration of Conformity................... 29

1 Introduction

Dear Customer,

Thank you for choosing STIHL. We develop and manufacture our quality products to meet our customers’ requirements. The products are designed for reliability even under extreme con‐ ditions.

STIHL also stands for premium service quality. Our dealers guarantee competent advice and instruction as well as comprehensive service support.

STIHL expressly commit themselves to a sus‐ tainable and responsible handling of natural resources. This user manual is intended to help you use your STIHL product safely and in an environmentally friendly manner over a long service life.

We thank you for your confidence in us and hope you will enjoy working with your STIHL product.

2 Guide to Using this Manual

2.1 Symbols used with warnings in the text

WARNING

■ This symbol indicates dangers that can cause

serious injuries or death. ► The measures indicated can avoid serious

injuries or death.

NOTICE

■ This symbol indicates dangers that can cause

damage to property. ► The measures indicated can avoid damage

to property.

2.2 Symbols in Text

This symbol refers to a chapter in this instruction manual.

3 Overview

3.1 Chainsaw

Translation of Original Instruction Manual

0000009002_003_GB

Printed on chlorine-free paper

Printing inks contain vegetable oils, paper can be recycled.

0458-759-0121-D. VA5.K21.

1 Front Hand Guard

Helps protect operator’s left hand from con‐ tact with the saw chain, serves to engage the

Dr. Nikolas Stihl

IMPORTANT! READ BEFORE USING AND KEEP IN A SAFE PLACE FOR REFERENCE.

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3 Overview English

chain brake and activates the chain brake by inertia in certain kickback situations.

2 Muffler

Reduces chainsaw noise emissions.

3 Guide Bar

Supports and guides the saw chain.

4 Saw Chain

Cuts the wood.

5 Spiked Bumper

Toothed stop for holding saw steady against wood while cutting.

6 Tensioning Screw

Adjusts chain tension.

7 Chain Sprocket

Toothed wheel that drives the chain.

8 Chain Catcher

Reduces risk of operator contact with the chain if it comes off the bar or breaks.

9 Nuts

Secure chain sprocket cover to the chainsaw.

10 Chain Sprocket Cover

Covers the chain sprocket and secures the guide bar to the chainsaw.

11 Chain Scabbard

Helps protect user from contact with saw chain.

12 Handlebar

For holding, controlling and carrying the chainsaw.

13 Oil Tank Cap

Closes the oil tank.

14 Limit Stop

Limits travel of oil pump adjusting screw.

15 Oil Pump Adjusting Screw

Serves to adjust chain oil feed rate.

16 Starter Grip

Serves to crank the engine.

17 Fuel Tank Cap

Closes the fuel tank.

18 Master Control Lever

For starting, running and stopping the engine.

19 Throttle Trigger

Controls engine speed.

20 Rear Hand Guard

Protects operator’s right hand from contact with the chain if it comes off the bar or breaks.

21 Rear Handle

For operating, holding and controlling the chainsaw.

22 Throttle Trigger Lockout

Unlocks the throttle trigger.

23 Air Filter

Filters the air entering the engine.

24 Spark Plug Boot

Connects ignition lead to spark plug

25 Spark Plug

Ignites fuel-air mixture in the engine.

26 Decompression Valve

Eases engine starts.

27 Shroud

Covers the engine.

28 Shutter

Serves to select summer or winter operating mode.

29 Filter Cover

Covers the air filter.

30 Filter Cover Lock

Secures filter cover to chainsaw.

# Serial Number

3.2 Features

The chainsaw may be equipped with the follow‐ ing features:

1 Handle heating switch

Switches the handle heating on and off. Heats the front and rear handles.

3.3 Symbols

Meanings of symbols that may be on the chain‐ saw:

This symbol marks the fuel tank.

This symbol marks the chain oil tank.

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English 4 Safety Precautions

The chain brake is engaged and disen‐ gaged in this direction.

This symbol shows the direction of rotation of the chain.

This symbol marks the oil pump adjust‐ ing screw and the chain oil feed rate.

Rotate in this direction to increase chain tension.

Shutter is in winter mode in this position.

WARNING

■ Using the chainsaw for purposes for which it is

not designed may result in serious or fatal inju‐ ries and damage to property. ►

Use the chainsaw as described in this instruction manual.

4.3 The Operator

WARNING

Shutter is in summer mode in this position.

This symbol marks the handle heating switch.

This symbol marks the decompression valve.

■ Users without adequate training or instruction

cannot recognize or assess the risks involved in using the chainsaw. The user or other per‐ sons may sustain serious or fatal injuries.

► Read, understand and save the

instruction manual.

Master Control lever is moved in this direc‐ tion to stop the engine.

Master Control lever is moved to this posi‐ tion to stop the engine.

Engine is operated or started with the Mas‐ ter Control lever in this position.

Engine can be started with the Master Control lever in this position.

Guaranteed sound power level accord‐ ing to directive 2000/14/EC in dB(A) in order to make sound emissions of products comparable.

4 Safety Precautions

4.1 Warning Signs

Meanings of warning signs on the chainsaw:

Observe safety notices and take the necessary precautions.

Read, understand and save the instruction manual.

Wear safety glasses, hearing protec‐ tion and a hard hat.

Observe safety notices on kickback and take the necessary precautions.

4.2 Intended Use

The STIHL MS 462 is designed for cutting wood, limbing and felling trees.

► If the chainsaw is passed on to another per‐

son: Always give them the instruction man‐ ual.

►

Make sure the user meets the following requirements:

The user must be rested.

–

The user must be in good physical con‐

–

dition and mental health to operate and work with the chainsaw. If the user’s physical, sensory or mental ability is restricted, he or she may work only under the supervision of or as instructed by a responsible person. The user can identify and assess the

–

dangers of the chainsaw. The user must be of legal age or is

–

being trained in a trade under supervi‐ sion in accordance with national rules and regulations. The user has received instruction from a

–

STIHL servicing dealer or other experi‐ enced user before working with the chainsaw for the first time. The user must not be under the influ‐

–

ence of alcohol, medication or drugs.

► If the user is working with a chainsaw for

the first time: Practice cutting logs on a sawhorse or other support.

►

If you have any queries: Contact your STIHL servicing dealer for assistance.

■ The chainsaw’s ignition system produces an

electromagnetic field. This field may interfere with some pacemakers. This can result in seri‐ ous or fatal injuries. ►

If the user has a pacemaker: Make sure the pacemaker is not affected.

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4 Safety Precautions English

►

4.4 Clothing and Equipment

WARNING

■

Long hair can become entangled in the saw during operation. This can result in serious injuries. ►

Tie up long hair so that it is above shoulder level.

■ Objects can be thrown through the air at high speed during operation. This can result in per‐ sonal injury.

► Wear close-fitting safety glasses.

Suitable safety glasses that have been tested and labeled in accord‐ ance with EN 166 or national stand‐ ards are available from retailers.

►

STIHL recommends that you wear a face shield.

► Wear a long-sleeved, snug-fitting upper

garment.

■ Noise occurs during operation. Noise can harm your hearing.

► Wear hearing protection.

Wear chainsaw boots with cut retardant inserts.

4.5 Work Area and Surroundings

WARNING

■

Bystanders, children and animals are not aware of the dangers of the chainsaw or thrown objects. Innocent bystanders, children and animals may be seriously injured and damage to property may occur. ►

Keep bystanders, children and animals

away from the work area. ► Do not leave the chainsaw unattended. ► Make sure that children cannot play with

the chainsaw.

■ Hot exhaust gas is emitted through the muffler while the engine is running. Hot exhaust gas can ignite easily flammable materials and cause a fire. ►

Keep exhaust gas well away from easily flammable materials.

4.6 Safe Condition

4.6.1 Chainsaw

■ Falling objects can cause head injuries. ► If there is a danger of falling objects

during operation: Wear a safety hard hat.

■ Dust can be whipped up during operation:

Whipped up dust can damage the respiratory passages and cause allergic reactions. ►

If dust is whipped up and forms a cloud: Wear a dust respirator mask.

■ Inappropriate clothing can snag on wood,

brush or the saw. Not wearing suitable cloth‐ ing may result in serious injury. ►

Wear snug-fitting clothing.

► Do not wear a scarf or jewelry.

■ The user can come into contact with the rotat‐

ing saw chain during operation. This can result in serious injuries. ►

Wear long trousers with cut-retardant inserts.

■ The user can be cut by the wood during oper‐

ation. The user can come into contact with the saw chain during cleaning and maintenance work. This can result in personal injury. ►

Wear work gloves made of durable mate‐ rial.

■ Wearing unsuitable footwear may cause you

to slip or stumble. Contact with the rotating saw chain can result in cuts. This can result in personal injury.

The chainsaw is in a safe condition if the follow‐ ing points are observed:

The chainsaw is not damaged.

–

There is no fuel leaking from the chainsaw.

–

The fuel tank and oil tank caps are closed.

–

The chainsaw is clean.

–

The chain catcher is fitted and undamaged.

–

The chain brake is operating properly.

–

The controls function properly and have not

–

been modified. The chain lubrication is operating properly.

–

Wear marks on the chain sprocket are not

–

deeper than 0.5 mm. A combination of guide bar and saw chain rec‐

–

ommended in this User Manual is mounted. The guide bar and saw chain are properly

–

mounted. The saw chain is properly tensioned.

–

Only original STIHL accessories designed for

–

this chainsaw model are fitted. The accessories are correctly attached.

–

WARNING

■

If not in safe condition, components may no longer operate correctly, safety devices may be disabled and fuel leakage may occur. This may result in serous or fatal injury to people. ►

Work only with an undamaged chainsaw.

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English 4 Safety Precautions

► If fuel is leaking from the chainsaw: Do not

use the chainsaw and contact a STIHL dealer for assistance.

►

Close the fuel tank and oil tank caps. ► If the chainsaw is dirty: Clean the chainsaw. ► Work only with property fitted and undam‐

aged chain catcher. ► Never modify your chainsaw. Exception:

Mounting a combination of guide bar and

saw chain recommended in this User Man‐

ual. ►

If the controls do not function properly: Do

not use your chainsaw. ► Only fit original STIHL accessories

designed for this chainsaw model. ► Mount the guide bar and saw chain as

described in this User Manual. ► Attach accessories as described in this

User Manual or in the User Manual for the

accessories. ►

Never insert objects in the chainsaw’s

openings. ► Replace worn or damaged labels. ► If you have any doubts, be sure to consult a

STIHL dealer.

4.6.2 Guide Bar The guide bar is in a safe condition if the follow‐ ing points are observed:

Guide bar is not damaged.

–

Guide bar is not deformed.

– –

The minimum groove depth is maintained,

19.3. Bar rails are free from burrs.

–

Bar groove is not pinched or splayed.

–

WARNING

■

If the guide bar is not in a safe condition, it can no longer support and guide the saw chain properly. The rotating saw chain can jump off the guide bar. This can result in serious or fatal injuries. ►

Work only with an undamaged guide bar. ► If the groove depth is less than the mini‐

mum depth: Mount a new guide bar. ► Deburr the guide bar every week. ► If you have any queries: Contact your

STIHL servicing dealer.

4.6.3 Saw Chain The saw chain is in a safe condition if the follow‐ ing points are observed:

Chain is not damaged.

–

Chain is properly sharpened.

–

The service marks on the cutters are still visi‐

–

ble.

WARNING

■ If components do not comply with safety requirements, they will no longer function properly and safety devices may be rendered inoperative. This can result in serious or fatal injuries. ►

Work only with an undamaged saw chain. ► Sharpen the chain properly. ► If you have any queries: Contact your

STIHL servicing dealer for assistance.

4.7 Fuel Mixture and Refueling

WARNING

■ This chainsaw requires a fuel mixture of gaso‐ line and two-stroke engine oil. Fuel mixture and gasoline are extremely flammable. If fuel mixture or gasoline make contact with open fire or hot objects, they can cause a fire or explosion. This can result in serious or fatal injuries and damage to property. ►

Protect fuel mixture and gasoline from heat

and fire. ► Do not spill fuel mixture and gasoline. ► If fuel has been spilled: Wipe up the fuel

with a cloth and do not attempt to start the

engine until all parts of the saw and the

area around it are dry. ►

Do not smoke. ► Never refuel near a fire. ► Shut off the engine and allow it to cool

down before refueling. ► Start the engine at least 3 meters from the

fueling spot, outdoors only.

■ Inhaling fuel fumes and gasoline fumes can have toxic effects. ► Avoid inhaling fuel fumes or gasoline

fumes.

► Refuel in a well-ventilated location.

■ The chainsaw becomes hot during operation, or in a very hot environment. Depending on the type of fuel, altitude, ambient temperature and the temperature of the saw, the fuel expands and can cause a pressure build-up in the tank. Fuel may escape as a spray and ignite when the fuel tank cap is opened. This can result in serious injuries and damage to property. ► Allow the saw to cool down before opening

the tank cap.

► Open the tank cap slowly in stages.

■ Clothing that has been in contact with fuel or gasoline is more easily flammable. This can result in serious or fatal injuries and damage to property.

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4 Safety Precautions English

► If your clothing comes into contact with fuel

or gasoline: Change your clothing.

■ Fuel mix, gasoline and two-stroke engine oil can harm the environment. ► Do not spill fuel, gasoline or two-stroke

engine oil.

► Dispose of fuel mix, gasoline and two-

stroke engine oil in accordance with local regulations and environmental require‐ ments.

■

Fuel, gasoline or two-stroke engine oil can cause irritation if they come into direct contact with the skin or eyes. ►

Avoid contact with fuel, gasoline and twostroke engine oil.

► In case of contact with the skin: Wash

affected areas with plenty of water and soap.

►

In case of contact with the eyes: Rinse eyes with plenty of water for at least 15 minutes and seek medical advice.

■

The saw’s ignition system produces sparks. Unconfined sparks may cause a fire or an explosion in an easily combustible or explo‐ sive environment. This can result in serious or fatal injuries and damage to property. ►

Use the spark plugs described in this

instruction manual. ► Insert and tighten down the spark plug. ► Connect the spark plug boot and press it

down firmly.

■ The saw can be damaged if it is run on a fuel mixture consisting of unsuitable gasoline or an unsuitable two-stroke engine oil or if an incor‐ rect mix ratio of gasoline and two-stroke engine oil is used. ►

Mix the fuel as described in this instruction manual.

■ The mixture of gasoline and two-stroke engine oil can separate if it is stored for a long period. The saw can be damaged if it is used with a fuel mix that has separated. ►

Before refueling the saw: Thoroughly mix the fuel.

► Use a mixture of gasoline and two-stroke

engine oil that is not older than 30 days (STIHL MotoMix: 2 years).

4.8 Working

4.8.1 Sawing

WARNING

■

Always work within calling distance of others in case help is needed.

► Make sure than persons outside the work

area are within calling distance.

■ If the engine is not started properly, the user may lose control of the chainsaw. This can result in serious injuries. ►

Start the engine as described in this instruc‐ tion manual.

► If the saw chain is touching the ground or

objects: Do not start the engine.

■ The user cannot concentrate on the work in certain situations. The user can lose control of the saw, trip or fall and be seriously injured. ►

Work calmly and carefully.

► If light and visibility are poor: Do not use

your saw. ► Operate the chainsaw alone. ► Do not work above shoulder height. ► Watch out for obstacles. ► Stand on the ground while working and

keep a good balance. If it is necessary to

work at heights: Use a lift bucket or a safe

platform. ►

If you begin to feel tired: Take a break.

■ Exhaust gas is produced when the engine is running. Breathing in exhaust gas can have toxic effects. ►

Avoid inhaling exhaust gas.

► Operate the chainsaw is a well ventilated

location.

► In the event of nausea, headache, visual

disturbances, problems with hearing or diz‐ ziness: Stop work and seek medical advice.

■

The user’s ability to hear and assess noises is restricted when wearing hearing protection with the engine running. ►

Work calmly and carefully.

■ The user will not be able to control the chain‐ saw properly if it is operated with the Master

Control lever in position serious injuries. ►

Move the Master Control lever to position .

► Start the engine as described in this instruc‐

tion manual.

■ Do not accelerate the engine with the chain brake engaged since this can damage the chain brake. ►

Disengage the chain brake before you start cutting.

■ The rotating saw chain can cut the operator. This can result in serious injuries. ► Do not touch the rotating saw chain. ► If the saw chain is blocked by an object:

Shut off the engine and engage the chain brake. Then remove the object causing the blockage.

. This can result in

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English 4 Safety Precautions

■ The rotating chain becomes hot and expands. If the chain is not lubricated sufficiently and retensioned, it can come off the guide bar or break. This can result in serious injuries and damage to property. ►

Use special chain oil.

► Check chain tension regularly during cutting

work. If chain tension is insufficient: Ten‐ sion the chain.

■

If the behavior of the saw changes during operation or feels unusual, it may no longer be in a safe condition. This can result in serious injuries and damage to property. ►

Stop work and contact your STIHL dealer for assistance.

■ Saw vibrations may occur during operation. ► Wear gloves. ► Take regular breaks. ► If signs of circulation problems occur: Seek

medical advice.

■ Sparks may occur if the rotating chain makes contact with a hard object. Sparks may cause a fire in an easily combustible location. This can result in serious or fatal injuries and dam‐ age to property. ►

Do not work in an easily combustible loca‐ tion.

■ Note that the saw chain continues to rotate for a short period after you release the trigger. The rotating saw chain can cut the user. This can result in serious injuries. ►

Wait for the chain to come to a standstill.

WARNING

■

The guide bar can be pinched when cutting wood that is under tension. The user can lose control of the saw and be seriously injured. ►

Make a relieving cut in the compression side (1) first, then perform bucking cut at the tension side (2).

4.8.2 Limbing

WARNING

■

If the underside of the felled tree is limbed first, it will no longer be supported on the

8 0458-759-0121-D

ground by branches. The tree can move dur‐ ing cutting work. This can result in serious or fatal injuries. ►

Cut through large limbs on the underside of the tree only after it has been bucked.

► Do not stand on the log while limbing it.

■ A branch may fall to the ground during limbing. The user may trip, fall or be seriously injured. ► Limb from the base to the crown of the tree.

4.8.3 Felling

WARNING

■ Inexperienced users cannot assess the dan‐ gers of felling a tree. This can result in serious or fatal injuries and damage to property. ►

If you have any queries: Do not fell the tree yourself.

■ A tree and branches can fall on bystanders or objects during the felling operation. This can result in serious or fatal injuries and damage to property. ►

Determine direction of fall so that the area in which the tree falls is clear.

► Do not allow bystanders, children or ani‐

mals within 2.5 tree lengths of the felling site.

►

Remove broken or dead branches from the tree crown before felling.

► If broken or dead branches cannot be

removed from the crown: Do not fell the tree.

►

Observe tree crown and crowns of neigh‐ boring trees and keep clear of falling branches.

■

When the tree falls the trunk can break or spring back in the direction of the user. This can result in serious or fatal injuries. ►

Plan an escape path sideways behind the tree.

► Walk backwards along the escape path and

observe the falling tree.

► Do not walk backwards down slopes.

■ Obstacles in the work area and on the escape path can hinder the user. The user may trip and fall. This can result in serious or fatal inju‐ ries. ►

Remove all obstacles from the work area and escape path.

■ If you cut into or through the hinge, stabilizing strap or holding strap too soon, the intended direction of fall cannot be controlled or the tree can fall prematurely. This can result in serious or fatal injuries and damage to property. ►

Do not cut into or through the hinge.

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4 Safety Precautions English

► Cut through the stabilizing strap or holding

strap last.

► If the tree begins to fall too soon: Abandon

the felling cut and retreat along the escape.

■ Kickback can occur if the rotating chain in the upper quadrant of the bar nose makes contact with a hard felling wedge and is suddenly braked. This can result in serious or fatal inju‐ ries. ►

Use aluminum or plastic felling wedges.

■ If the tree does not fall all the way to the ground or gets caught on another tree, the operator cannot finish the operation in a con‐ trolled manner. ►

Stop the felling operation and use a cable

► Always keep your body out of the plane of

the cutting attachment.

► Use the working techniques described in

this instruction manual.

► Do not cut with the upper quadrant of the

bar nose.

► Always cut with a properly sharpened and

tensioned saw chain. ► Use a reduced kickback saw chain. ► Use a guide bar with a narrow radius nose. ► Always cut with the chain running at full

speed.

4.9.2 Pull-in

winch or suitable vehicle to pull the tree to the ground.

4.9 Reactive Forces

4.9.1 Kickback

The saw is pulled away from the operator when the bottom of the bar is used for cutting.

WARNING

■

If the rotating chain makes contact with a hard object and is suddenly pinched, the saw is

Kickback can be caused for the following rea‐ sons:

The rotating saw chain in the upper quadrant

–

of the bar nose makes contact with a hard object and is suddenly braked. The rotating saw chain is pinched at the bar

–

nose.

The chain brake cannot prevent kickback.

WARNING

abruptly jerked away from the operator. The operator can lose control of the saw and be seriously or fatally injured. ►

Hold the saw firmly with both hands. ► Operate the saw as described in this

instruction manual. ► Keep the guide bar straight in the cut. ► Apply the spiked bumper properly. ► Always cut with the chain running at full

speed.

4.9.3 Pushback

If kickback occurs, the saw can be thrown up

■ in the direction of the operator. The operator

can lose control of the saw and be seriously or fatally injured. ►

Hold the saw firmly with both hands.

The saw is pushed back toward the operator when the top of the bar is used for cutting.

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English 5 Preparing the Saw for Operation

►

WARNING

■ If the rotating chain makes contact with a hard object and is suddenly pinched, the saw can be abruptly pushed back toward the operator. The operator can lose control of the saw and be seriously or fatally injured. ►

Hold the saw firmly with both hands.

► Operate the saw as described in this

instruction manual. ► Keep the guide bar straight in the cut. ► Always cut with the chain running at full

speed.

4.10 Transporting

WARNING

■ The saw may turn over or shift during trans‐ port. This can result in serious injuries and damage to property. ►

Shut off the engine. ► Engage the chain brake. ► Fit the scabbard so that it completely cov‐

ers the guide bar. ► Secure the chainsaw with lashing straps or

a net to prevent it turning over and moving.

The muffler and engine may be hot after a

■ period of operation. There is a risk of burn

injuries. ►

Carry the saw by holding the front handle in your right hand with the guide bar pointing to the rear.

4.11 Storing

WARNING

■

Children are not aware of and cannot assess the dangers of a chainsaw and can be seri‐ ously injured. ►

Shut off the engine. ► Engage the chain brake. ► Fit the scabbard so that it completely cov‐

ers the guide bar. ► Store the saw out of the reach of children.

■ Dampness can corrode the electrical contacts on the saw and metal components. This can damage the saw.

10 0458-759-0121-D

Store the saw in a clean and dry condition.

4.12 Cleaning, Maintenance and Repair

WARNING

■

The saw chain can start up unintentionally if the engine is running during cleaning, mainte‐ nance or repair operations. This may result in serious injury to people and damage to prop‐ erty. ►

Shut off the engine.

► Engage the chain brake.

■ The muffler and engine may be hot after a

period of operation. This can result in burn injuries. ►

Wait until the muffler and engine cool down.

■ Aggressive cleaning agents, a water jet or

pointed objects can damage the chainsaw, guide bar and saw chain. If the chainsaw, guide bar or saw chain are not cleaned cor‐ rectly, components may no longer function properly or safety devices may be rendered inoperative. They may cause serious injury to persons. ► Clean the chainsaw, guide bar and saw

chain as described in this user manual.

■ If the chainsaw is not maintained as described

in this user manual, components may no lon‐ ger function properly or safety devices may be rendered inoperative. This may result in serous or fatal injury to people. ►

Service or repair the chainsaw as described in this user manual.

■ If the guide bar and saw chain are not main‐

tained or repaired as described in this user manual, components may no longer function properly or safety devices may be rendered inoperative. They may cause serious injury to persons. ►

Service or repair the guide bar and saw chain as described in this User Manual.

■ The user may be cut by the sharp cutters

while cleaning or servicing the saw chain. This may result in injury to the user. ►

Wear work gloves made from resistant material.

5 Preparing the Saw for

Operation

5.1 Preparing the Saw for Opera‐ tion

Perform the following steps before starting work:

+ 22 hidden pages

Stihl MS 661 C-M Instruction Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

1 Introduction

2 Guide to Using this Manual

2.1 Symbols used with warnings in the text

2.2 Symbols in Text

3 Overview

3.1 Chainsaw

3.2 Features

3.3 Symbols

English 4 Safety Precautions

4.3 The Operator

4.1 Warning Signs

4.2 Intended Use

4.4 Clothing and Equipment

4.5 Work Area and Surroundings

4.6 Safe Condition

4.7 Fuel Mixture and Refueling

4.8 Working

4.9 Reactive Forces

English 5 Preparing the Saw for Operation

4.10 Transporting

4.11 Storing

4.12 Cleaning, Maintenance and Repair