Stihl MS 661 C-M, Instruction Manual

► Remove the fuel tank cap.

NOTICE

■ Bright light, sunlight and extreme tempera‐

tures can cause the fuel mix to separate much

faster. The saw can be damaged if it is used

with a fuel mix that has become separated.

► Thoroughly mix the fuel.

► Do not use fuel mix that has been stored for

more than 30 days.

► Fill the tank to within no more than 15 mm

of the brim, taking care not to spill any fuel.

► If the grip on the fuel tank cap has dropped

into the closed position: Raise the grip until it

is vertical.

2

3

1

0000-GXX-2935-A1

1

4

► Place the cap in the filler opening so that mark

(1) lines up with mark (2).

► Press the cap down and rotate it clockwise as

far as stop.

The cap snaps into place. The mark (1) is in

line with mark (4) and points to mark (3).

► Check to see if the fuel tank cap can be pulled

upwards and off.

► If the fuel tank cap cannot be pulled upwards

and off: Fold the grip flush with the top of the

cap.

The fuel tank is closed.

If the fuel tank cap can be pulled upwards and

off, perform the following steps:

► Place the fuel tank cap in the filler opening – in

any position.

0000-GXX-3136-A1

1

2

A

B

C

► Press the cap down and rotate it clockwise as

far as stop.

► Press the cap down and rotate it counterclock‐

wise until mark (1) points to mark (2).

► Now try again to close the fuel tank.

► If the fuel tank still cannot be closed properly:

Do not use the chainsaw and contact a STIHL

dealer for assistance.

The chainsaw is not in a safe condition.

9

Starting and Stopping the

Engine

9.1

Starting the Engine

1

2

3

0000-GXX-A391-A0

► Engage the chain brake (2).

► Pull off the chain guard (scabbard).

► Depress the decompression valve (1).

► Move the Master Control lever (3) to posi‐

tion  .

0000-GXX-2936-A0

► Hold the chainsaw firmly in one of three ways:

–

Place the saw on level ground. Hold the

saw firmly on the ground with your left hand

on the handlebar – your thumb should be

under the handle. Put the toe of your right

boot into the rear handle and press down.

–

Place the saw on level ground. Hold the

saw firmly on the ground with your left hand

on the handlebar – your thumb should be

under the handle. Put the heel of your right

boot into the rear handle and press down.

–

Hold the saw firmly with your left hand on

the handlebar – your thumb should be under

the handle. Hold the rear handle tightly

between your legs, just above the knees.

English

9 Starting and Stopping the Engine

14

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