PIAGGIO 633929(IT), Руководство по обслуживанию станции, Страница: 59 / 314

Possible Cause Operation
control the lights are not steadily on, replace the
control unit; otherwise, check the cable harness
and the switch.
Steering and suspensions
Rear wheel
REAR WHEEL ROTATES WITH ENGINE AT IDLE
Possible Cause Operation
Idling rpms too high Adjust the engine idle speed and the CO%, if nec-
essary.
Clutch fault Check the springs / clutch masses
Controls
STEERING CONTROLS AND SUSPENSIONS
Possible Cause Operation
Torque not conforming Check the tightening of the top and bottom ring
nuts. If irregularities continue in turning the steer-
ing even after making the above adjustments,
check the seats in which the ball bearings rotate:
if they are recessed or if the balls are squashed,
replace them.
Steering hardening Check the tightening of the top and bottom ring
nuts. If irregularities continue in turning the steer-
ing even after making the above adjustments,
check the seats in which the ball bearings rotate:
if they are recessed or if the balls are squashed,
replace them.
Malfunctions in the suspension system If the front suspension is noisy, check: the efficien-
cy of the front shock absorbers; the condition of
the ball bearings and relevant lock-nuts, the limit
switch rubber buffers and the movement bushings.
In conclusion, check the tightening torque of the
wheel hub, the brake calliper, the shock absorber
disk in the attachment to the hub and the steering
tube.
Seal fault or breakage Replace the shock absorber Check the condition
of wear of the steering covers and the adjust-
ments.
MP3 125
Troubleshooting
TROUBL - 7