18
MAN-85 – USA
10- CENTRIFUGAL CLUTCH
The engine has a low maintenance dry centrifugal clutch. The following prescriptions,
if carefully followed, will allow a long clutch life.
When starting the engine, make sure that the brake pedal is fully pressed to avoid
sudden accelerations.
ATTENTION:
Once the engine is started and kart is still, avoid useless accelerations which
can overheat and deteriorate the clutch, before time. Oil the chain before each
test, immediately after each race or test and check the engine sprocket. Replace
if necessary.
A bad alignment of the engine sprocket with the axle sprocket or the lack of oil
will damage the chain and sprocket.
Check the clutch:
Every 5 hours of use.
When metallic noises are heard inside the clutch.
If the kart dragging speed exceeds 5000 RPMs.
Every time the clutch has overheated (presence of smoke or smell of burning).
To check the clutch, you must remove the clutch cover and the clutch drum.
Replace the clutch
Whenever the thickness of the friction material (see drawing) is lower than 1.5mm
on Point A of the clutch or if the body diameter is lower than 82.5mm.
Whenever the external friction material in the A portion of the clutch is very rough
(wear or degradation of the friction material due to overheating).
ATTENTION:
In case the friction material has been totally worn out and there is a contact
between the clutch body and the clutch drum, it is necessary to replace the
clutch drum. See drawing,
A
A
A
Ø83
