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THROTTLE CONTROL
For the maintenance intervals, see (PERIODIC
MAINTENANCE CHARTS), under:
- Throttle control.
CHECK
The no-load travel (A) of the accelerator handle
must be 2-3 mm, measured on the rim of the
actual twist grip handle.
ADJUSTMENT
- Place the vehicle on the stand.
- Remove the protective sleeve.
- Loosen the ring nut (2).
- Turn the adjusting device (3) to reset the recom-
mended value.
After adjustment:
- Manually lock rotation of the adjusting device
(3) and tighten the ring nut (2).
- Check the no-load stroke (A).
If the outcome is positive:
- Replace the protective sleeve.
After having completed adjustment, check that the
engine idle speed does not change upon turning
the handlebar and that when the accelerator han-
dle is released it returns automatically to the rest
position.
SPARK PLUG
The spark plug is a very important part for good en-
gine efficiency and special care must be given to it.
Before unscrewing the spark plug, the engine head
must be cleaned with a jet of compressed air to
prevent particles of sand, mud or any other type of
dirt on it from entering the cylinder.
DISASSEMBLING THE SPARK PLUG
The engine must be cold for this operation.
- Remove the spark plug cap (1).
- Release the spark plug (2) using the relative
wrench and then unscrewing by hand until it can
be fully removed.
- Clean it with a metal brush and check that the dis-
tance between the electrodes is 0.5 -0.6 mm.
This should be done approx. once every 1000 km,
while the plug must be changed once every 4000
km.
- Refit the spark plug, inserting it first by hand and
only using the wrench for the final tightening. - Re-
place the spark plug cover tube (1), ensuring that it
has been inserted correctly.
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