- Remove the piston -see 4.5.1.
Note:The piston must be re-
moved to make sure that no
residue can fall into the crankcase
when installing the piston rings
and cleaning their grooves.
Illustrations show piston
in model FS 200.
- Remove rings from piston.
•
Use a piece of old piston ring to
scrape the grooves clean.
•
Install the new piston rings in the
grooves so that the radii (1) face
the fixing pin (2).
- Install the piston -see 4.5.2.
- Remove the ignition module -
see 5.3.2 and 5.3.3.
- Remove the fuel tank -see 8.5.
- Remove the cylinder - see 4.5.1.
All models
•
Take out screw (1).
•
Remove top of cable guide (2).
FS 120...350, FR 350
•
Take throttle cable (1) out of
base of guide (2).
•
Take short circuit wire (3) out of
base of guide and remove it from
the retainers (4).
FS 400/450, FR 450
•
Remove short circuit wire from
the retainers.
•
Ease the grommets out of the
housing and pull out the short
circuit wire.
All models
•
Pull the base of the guide
off the housing.
- Remove the carrier -see 3.2.
2
5
0
R
A
0
4
9
1
3
2
4
V
A
2
5
0
R
A
0
4
6
V
A
2
5
0
R
A
0
4
8
2
1
V
A
2
1
2
5
0
R
A
0
4
7
1
V
A
2
5
0
R
A
0
5
0
V
A
2
5
0
R
A
0
5
1
V
A
2
5
0
R
A
0
5
2
V
A
4.6 Piston Rings 4.7 Crankcase
4.7.1 Removing Crankshaft
FS 120, 200, 300, 350, 400, 450, FR 350, 450 17
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