Stihl MS 661 C-M, Instruction Manual

16.2

Deburring the Guide Bar

A burr can build up on the outer edge of the

guide bar.

► Remove burr with a flat file or a STIHL guide

bar dressing tool.

► If you have any queries: Contact your STIHL

servicing dealer.

16.3

Sharpening the Saw Chain

Correctly sharpening saw chains requires a lot of

practice.
STIHL files, STIHL filing aids, STIHL sharpeners

and the brochure “Sharpening STIHL Saw

Chains” help you achieve the right results. To

obtain the brochure visit http://www.stihl.com/

sharpening-brochure.
STIHL recommends you have saw chains

resharpened by a STIHL servicing dealer.

WARNING

■ The chain's cutters are very sharp. There is a

risk of cut injuries.

► Wear work gloves made of durable material.

0000-GXX-1219-A0

► File each cutter with a round file so that the

following points are observed:

–

Round file matches the chain pitch.

–

File from the inside to the outside of the cut‐

ter.

–

Hold the file at right angle to the guide bar.

–

Maintain a filing angle of 30°.

0000-GXX-1220-A1

► File down the depth gauges with a flat file so

that they are level with the STIHL filing gauge

and parallel to the service mark. The STIHL fil‐

ing gauge must match the chain pitch.

► If you have any queries: Contact your STIHL

servicing dealer for assistance.

17 Repairing

17.1

Repairing the Chain Saw,

Guide Bar and Saw Chain

The chain saw, guide bar and saw chain cannot

be repaired by the user.

► If the saw, guide bar or saw chain is damaged:

Do not use your saw, guide bar or saw chain,

and contact your STIHL servicing dealer.

18 Troubleshooting

18.1

Troubleshooting Chainsaw

Most malfunctions have the same causes.

► Perform the following operations:

► Clean the air filter.

► Clean or replace the spark plug.

► Adjust saw for winter or summer operation.

► If the malfunction still exists: Take the action described in the following table.

Condition

Cause

Remedy

Engine does not

start.

Insufficient fuel in the

tank.

► Mix fuel and refuel the chainsaw.

Engine is flooded.

► Clear the combustion chamber.

Carburetor is too hot. ► Allow chainsaw to cool down.
Carburetor is iced up. ► Allow saw to warm up to +10°C.

Engine idles errati‐

cally.

Carburetor is iced up. ► Allow saw to warm up to +10°C.

17 Repairing

English

0458-759-0121-D. VA0.A21.

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