9
Area Component Checks and remedies
Steering unit/
operating panel con-
tinued.
Throttle and twist grip. It should not be possible to drive the scooter
now. The battery indicator should ripple up and
down. Twist the throttle slightly forwards when
the scooter is switched on. When the throttle is
released the scooter should come to a stand-
still and there should be a click from the brake.
It should not be possible to push the scooter
now. Carry out the same check while turning
the throttle slightly backwards.
Maximum speed poten-
tiometer.
Check that the potentiometer is fi rmly in posi-
tion on the axle.
Check that the scooter drives fast and slow in
the hare and tortoise positions respectively.
Battery indicator. Check that all lights can be switched on when
the battery is fully charged. If there is no dis-
play at all try another control as this will be
where the signal comes from. If this does not
help the PCB must be replaced. If one light
fails to go on this indicates a defective diode.
Check that the parameter “True Charge ca-
libration” is set at 99 ohm. The best test of
this can be obtained while driving in hilly sur-
roundings.
Wear. Check:
That the motor runs smoothly and uniformly.
If it does not, this will typically indicate that
the carbon brushes in the motor should be
replaced. The minimum length of the brushes
should be 1 cm. See spare parts catalogue for
instructions.
The gear wheel in the transaxle for wear. Lift
one of the rear wheels and measure the play
around the periphery of the tyre. Wheel play
on a new machine should be between 16 – 18
mm. Replace the entire unit if there is greater
play than this. See spare parts catalogue for
instructions.
Wear in the rear wheel bearings in the gear. Lift
the rear end of the scooter. Lift one wheel up
and down at a time to see if there is play in the
transaxle bearings. If there is, the entire unit
should be replaced.
Motor, gear, brake
(transaxle).
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