81
EN
G
LI
SH
ADJUSTMENT
-
Adjust the screw (1) located on the carburet-
tor (left side).
-
TIGHTENING(clockwise), the revs increase.
-
LOOSENING(counter-clockwise), the revs
decrease.
To check correct operation and if the idling speed
remains stable, twist the accelerator handle to
accelerate and throttle down a few times.
NOTE: do not adjust the air adjusting screw to
avoid altering the mixture settings.
If necessary, consult a Dealer.
THROTTLE CONTROL
For the maintenance intervals, see page 63 (PE-
RIODIC 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 rec-
ommended value.
After adjustment:
-
Manually lock rotation of the adjusting de-
vice (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 handle is released it returns
automatically to the rest position.
SPARK PLUG
The spark plug is a very important part for good
engine efficiency and special care must be given
to it.
Before unscrewing the spark plug, the en-
gine head must be cleaned with a jet of com-
pressed 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.
