Stihl MS 661 C-M User Manual

20 MS 661, MS 661 C-M
: Position the brake band (1) in the
guide (arrow).
– Engage the chain brake
: Push the brake band (1) into its
seat (arrows) as far as stop.
– Insert and tighten down the screw
on the underside.
– Fit cover, insert and tighten down
the screws firmly.
– Install the clutch drum,
b 4.1
– Check operation, b 5.1
– Reassemble all other parts in the
reverse sequence.
1
1166RA009 TG
1
1166RA010 TG
5.3 Brake Lever
– Troubleshooting, b 3.2
– Remove the brake band, b 5.2
– Engage the chain brake
– this relieves spring tension.
: Use the assembly tool
1117 890 0900 to disconnect the
brake spring (1) from the anchor
pin (arrow) and the brake lever.
– Remove the rewind starter,
b 9.2
: Remove the E-clip (1), then pull
the hand guard (2) and brake
lever (3) off the pivot pins
together.
– Check the pivot pins, replace if
necessary,
b 5.5
– Inspect the cam lever and
replace if necessary, b 5.4
1
1166RA012 TG
1166RA013 TG
2
1
3
Installing
– Clean pins and disassembled
parts and lubricate with STIHL
grease, b 16
: Push the brake lever, hook (2) for
spring facing up, into the recess
in the hand guard (1) and line up
the holes (3, 4).
: Push the hand guard (1) with
brake lever (2) over the machine
until they are positioned against
the pivot pins (arrows).
2
1
43
1166RA014 TG
1166RA015 TG
1
2

Stihl MS 661 C-M Specifications

General

Idle speed	- RPM
Motor type	2-stroke motor
Chain pitch	3/8 \
Blade length	800 mm
Product color	Black, Grey, Orange
Automatic oiling	Yes
Engine displacement	91.1 cm³
Power source	Gasoline
Sound power level	118 dB
Vibration emission	6.9 m/s²
Sound pressure level	105 dB

Weight and Dimensions

Weight	7400 g