Stihl FS 50 User Manual

21Series 4144 Powerhead
6.5 Crankshaft
6.5.1 Removing and Installing
– Remove the engine – see service
manual for "Series 4144
Components – FS, FC, KM"
The puller is not necessary for
removal of the crankshaft.
– Block the piston, b 5.1
– Remove the flywheel, b 7.5
: Apply wrench to hexagon (arrow)
and unscrew the carrier (1).
– Remove the cylinder, b 6.4
– Remove the piston, b 6.7
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938RA025 TG
: Loosen the engine pan (1) at the
lug (arrow).
– Remove the engine pan.
: Release the crankshaft from the
bearing seats (arrows) and take it
out of the crankcase.
: Pull the oil seals (arrows) off the
crankshaft stubs.
– Check the crankshaft and ball
bearings and replace if
necessary, b 6.5.1
938RA047 TG
1
938RA048 TG161RA002 TG
– Inspect the crankcase and
sealing faces (arrows) for the
engine pan and cylinder, clean
and remove gasket residue if
necessary, b 9
The sealing faces must be in perfect
condition. Always replace
components with damaged sealing
faces.
– Check the spacer flange (1) and
replace if necessary, b 6.4
In a new cylinder is installed, the
spacer flange must be transferred
from the old cylinder – always install
a new gasket, b 6.4.
296RA053 TG938RA037 TG
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Stihl FS 50 Specifications

General

Brand	Stihl
Model	FS 50
Category	Trimmer
Language	English