Stihl FS 50 - 6.4 Removing and Installing the Cylinder

18 Series 4144 Powerhead
: Apply the puller (1) 5910 890
4400 with the jaws under the
crankcase ribs (arrows) and line
up the spindle (2) so that the
bushing (3) is centered on the
engine pan.
: Turn the spindle (2) clockwise
until the puller sits tightly.
Do not overtighten the spindle
because the jaws may slip off or
damage the crankcase ribs.
: Take out the cylinder screws
(arrows).
1
2
3
938RA031 TG938RA032 TG
: Carefully lift the cylinder (1)
away.
Do not use pointed or sharp-edged
tools for this job.
– Check the cylinder and replace if
necessary.
: Remove the cylinder gasket (1).
– Inspect and clean the sealing
face (arrow), b 9
The sealing face must be in perfect
condition. Always replace
components with damaged sealing
faces, b 4.3.
938RA033 TG
1
938RA034 TG
1
938RA035 TG
Always use a new cylinder gasket
when re-installing the cylinder.
– Line up the cylinder gasket (1) so
that the tab and cutouts (arrows)
match the contours of the
crankcase.
: Place the cylinder gasket (1) in
position.
– Inspect the spacer flange (1) and
replace it if necessary – even
very minor damage can result in
engine running problems, b 4.3
In a new cylinder is installed, the
spacer flange must be transferred
from the old cylinder.
938RA036 TG
1
938RA037 TG
1