FS 400/450, FR 450
•
Fit throttle cable (1) and grom-
met (2) in opening in carburetor
housing.
•
Insert stub (3) in the sealing
ring (4).
- Secure lug of extended throttle
cable between the raised marks
and tighten down the screws
to 6 Nm (4.4 lbf.ft).
- Preparations -see 4.4.
- Removeclutch housing -
see 9.1 and 11.2.
- Pull off the spark plug boot.
- On FS 120...350, FR 350: Take
ignition lead out of the retainers
on the throttle cable holder.
- Unscrew the spark plug.
- Unscrew the decompression
valve, if fitted.
FS 400/450, FR 450
•
Take cable retainer out of
cylinder.
All models:
Illustrations show the
FS 200 engine.
•
Pull out the sealing ring.
•
Release and unscrew the
four cylinder base screws.
- Pull the cylinder off the piston.
- Inspect the cylinder and replace
it if necessary.
- If a new cylinder has to be
installed, always fit the matching
piston. New cylinders are only
available with piston.
- Before removing the piston,
decide whether or not the cranks-
haft has to be removed as well.
To remove the clutch and carrier,
block the crankshaft by sliding
the wooden assembly block
between the piston and crank-
case.
- Remove the cylinder gasket.
•
Ease the hookless snap rings
out of the grooves in the piston
bosses.
2
5
0
R
A
0
3
0
V
A
2
5
0
R
A
0
2
8
4
3
1 2
V
A
2
5
0
R
A
0
2
9
V
A
2
5
0
R
A
0
3
1
V
A
2
5
0
R
A
0
3
2
V
A
4.5 Cylinder and Piston
4.5.1 Removal
14 FS 120, 200, 300, 350, 400, 450, FR 350, 450
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