Stihl FS 50 User Manual

32 Series 4144 Powerhead
: 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.
7.5 Flywheel
– Remove the engine – see service
manual for
"Series 4144 Components – FS,
FC, KM"
– Unscrew the spark plug.
– Use locking strip (1) to block the
piston, b 5.1
545RA004 TG545RA000 TG
1
– Remove the clutch, b 5.1
If the flywheel is stuck, use a puller.
: Screw the puller (1) 5910 893
0800 clockwise on to the
crankshaft as far as stop, then
back it off a 1/4 turn.
– Tap the end of the puller a few
times to release the flywheel
– take care not to damage the
crankshaft stub or ball bearing.
– Unscrew the puller and remove
the flywheel.
938RA090 TG938RA091 TG
1
The flywheel and magnet poles
(arrows) must not be damaged or
have turned blue. Replace flywheel
if necessary.
Before assembly, degrease the
bore in the flywheel hub and the
crankshaft stub, b 9.
: Make sure the key (arrow)
engages the slot in the crankshaft
stub.
– Check the air gap between the
ignition module and flywheel and
adjust if necessary, b 7.1.1
– Reassemble all other parts in the
reverse sequence.
– Tightening torques, b 3.3
938RA092 TG296RA110 TG

Stihl FS 50 Specifications

General

Brand	Stihl
Model	FS 50
Category	Trimmer
Language	English