23
MAN-028
ATTENTION:
Once the break-in is over and the engine is cold, check the torque of the exhaust
header nuts as, during the break-in, the nuts tend to become loose (refer to the
attached table).
8- INLET SILENCER
Make sure that the inlet holes on the filter are towards the front of the kart and that
they are not plugged.
Make sure that the clamp on the carburetor is not loosen and that the filter is well
fastened to the chassis.
Once a while, clean the inside from oil deposits. If necessary remove the rubber filter
union and clean it with gasoline or solvent.
9- EXHAUST SYSTEM
Before every test, make sure that the flexible is not damaged. Replace if
necessary.
ATTENTION:
In case the flexible is damaged, metallic particles could be sucked in the engine
and cause a seizure.
Always make sure that the springs are well hooked and in place. In case of breakage,
replace the broken spring. Never race the kart without the 3 springs in place, as
otherwise the exhaust pipe could vibrate beyond control.
Every 10 ÷15 hours, open the pipe end and make sure that the holes on the internal
counter cone are not plugged.
The best performance is achieved with a total exhaust lenght of:
L = 425 mm. (62cc engine)
L = 415 mm. (100/125 cc engines.)
Where L is measured from the flange on the exhaust header up to the first welding on
the first cone of the exhaust muffler (see drawing).
To achieve this dimension, the flexible (supplied with the engine) must be cut at a
lenght of 65mm (flexible completely closed).
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