Stihl MS 171 Manual page 45

: Make sure the leg spring (arrow)
locates properly inside the spark
plug boot.
Do not use either graphite grease or
silicone insulating paste.
– Reassemble all other parts in the
reverse sequence.
9.5 Flywheel
1
– Remove the shroud, b 8.4
– Block the piston with the locking
strip (1), b 6
44
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: Unscrew the flywheel nut (arrow).
If the flywheel is stuck, use the
puller.
1
: Screw on the puller (1)
1116 893 0800 clockwise as far
as stop and then turn it back a
quarter turn.
– Tap the end of the puller a few
times to release the flywheel.
– Unscrew the puller and remove
the flywheel.
Inspect flywheel (1) and magnet
poles (2) for cracks or other
damage. If it is damaged or has
turned blue, install a new flywheel.
The flywheel bore and crankshaft
stub must be free from grease,
b 16.
– On machines with ErgoStart,
check the pawls and replace if
necessary, b 10.4
: Make sure the key (arrow)
engages the slot in the crankshaft
stub.
– Check air gap between ignition
module and flywheel and adjust if
necessary, b 9.1.1
– Reassemble all other parts in the
reverse sequence.
– Tightening torques, b 3.5
MS 171, MS 181, MS 211