Stihl MS 661 C-M User Manual

82 MS 661, MS 661 C-M
: Take out the screw (1), push the
tank housing (2) down a little and
hold it there.
: Unscrew the AV element (1) from
the tank housing and disconnect
the retainer.
– Inspect the plug, spring and
retainer, replace if necessary.
Installing
– Preassemble the plug, spring
and retainer.
– Push the tank housing down a
little and hold it there.
1166RA183 TG
1
2
1
1166RA174 TG
1
1166RA185 TG
: Fit AV element (1) with retainer
on tank housing stub (arrow) and
screw it home as far as stop.
: Lift the tank housing (1) until
holes in bearing plug (2) line up.
: Insert and tighten down the
screw (3) firmly.
: Insert and tighten down the
screws (1) on the underside of
the machine.
1166RA186 TG
1
2
3
1
1
1166RA178 TG
: Lift the handlebar (1) sideways
and position it in the
guide (arrow) so that the peg (2)
engages the seat in the
crankcase.
On versions with handle heating,
check that wires are properly
positioned.
: Position cover (1) with bosses in
holes in handlebar (2), making
sure the tab (3) engages the
groove (arrow).
: Insert and tighten down the
screws (4) firmly.
2
1166RA187 TG
1
1166RA188 TG
1
4
3
4
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