Flywheel - Stihl MS 661 Manual

Make sure the leg spring (arrow)
locates properly inside the spark
plug boot.
: Fit the cover (1) over the spark
plug boot.
: Fit the cable retainer (1) at
distance 'a' from the ignition
module / control unit so that the
gap (arrow) faces away from the
spark plug boot:
– Models without M-Tronic:
a = 164 mm
– Models with M-Tronic:
a = 166 mm
– Use a pointed tool to pierce the
center of the other end of the
ignition lead which screws into
the module / control unit.
– Before installing the ignition lead,
pack the high voltage output with
STIHL multipurpose grease
b 16.
Do not use either graphite grease or
silicone insulating paste.
44
1
: Fit the grommet (1) on the
ignition lead and screw the
ignition lead into the ignition
module / control unit.
: Push the grommet (1) into
position.
– Install the ignition module /
control unit and set the air gap,
1
b 7.3
– Reassemble all other parts in the
reverse sequence.
7.7

Flywheel

– Remove the shroud, b 6.4
– Remove the rewind starter,
b 9.2
– Use locking strip to block the
piston, b 4.2
1
: Unscrew the flywheel nut (1).
1
1
2
: Screw puller (1) 1106 890 4501
: Hold the puller (1) steady and
: Remove the puller (1)
: The flywheel and magnet poles
On versions with heating, also
check the magnet ring for signs of
damage.
– Inspect the magnet ring in the
into flywheel as far as stop.
screw home the thrust bolt (2)
until the flywheel is released from
the crankshaft.
1106 890 4501 from the flywheel.
(arrows) must not be damaged or
have turned blue. Replace
flywheel if necessary.
flywheel (inside) for cracks or
other damage. If damage is
found, replace the flywheel.
MS 661, MS 661 C-M