26
FS 240 C, FS 260 C, FS 360 C, FS 410 C, FS 460 C-M
:
Carefully position muffler (1) and
insert screws (2) – do not tighten
:
Check gasket and cooling plate
for proper position and fit lower
screw (3)
– Insert and tighten down all three
screws
:
Guide insert (1) behind the
muffler with tab (arrow) in front
and position
:
Orient insert (1) parallel to muffler
:
Screw in the screw (2) and
tighten
– Reassemble remaining parts in
reverse order
5904RA035 TG
1
3
2
2
5904RA036 TG
1
2
5.2
Leak testing
Defective oil seals and gaskets or
cracks in housing are the usual
causes of leaks. Such faults allow
supplementary air to enter the
engine and upset the fuel-air
mixture.
This makes adjustment of the
prescribed idle speed difficult, if not
impossible.
Moreover, the transition from idle
speed to part or full throttle is not
smooth.
Always start with the vacuum test
and then continue with the pressure
test.
The engine can be thoroughly
checked for leaks under vacuum
and at gauge pressure using the
pump 0000 850 1300.
5.2.1
Preparations
– Remove shroud,
– Take off the spark plug boot and
remove the spark plug
– Set the piston to the top
dead center (this can be checked
through the spark plug hole)
5904RA037 TG
1
:
Screw in spark plug (1) and
tighten it securely
– Remove cooling plate and gasket
and position muffler with two
screws,
:
Slide sealing plate (1)
0000 855 8106 between cylinder
exhaust port and muffler
:
Tighten screws (2) lightly.
The sealing plate must fill the full
width between the screws.
Gasket (1) must be in place.
5904RA038 TG
1
2
2
5904RA039 TG
1
