APRILIA SCARABEO 500 2008 Service Station Manual page 157

SCARABEO 500
The start-up system has a gear between the motor armature and the crankshaft that is equipped with
a freewheel coaxial to the flywheel and the torque limiter on the intermediate shaft.
The torque limiter is calibrated at 10 kgm (100 Nm); this component protects the structure of the engine
and the start-up kinematic mechanism in the event of incorrect start-up procedure, resulting in inverse
rotation.
The freewheel is used for a sufficiently silent start-up.
The start-up control (energised remote control) is slaved to enabling signals by the side stand and the
emergency OFF/RUN switch, which does not allow starting given dangerous conditions.
The start-up control circuit is not controlled by the immobiliser system; therefore, before insisting on the
starter system in an abnormal way, check the immobiliser enabling switch.
To check the enabling switch circuit, see the «Electrical system» chapter; to check the crankshaft control
transmission, follow what is described in the «Flywheel and start-up system» chapter.
Removing the starter motor
NOTE
THIS OPERATION MAY ALSO BE CARRIED OUT WITH THE FLYWHEEL COVER FITTED.
- Undo the two fixing screws.
- Slide off the complete starter motor.
Removing the flywheel magneto
NOTE
SHOULD THE MAGNETO FLYWHEEL BE REMOVED, FIRST REMOVE THE CHAIN GUIDE SLIDER
RETENTION PLATE.
- Unscrew the 3 fixing screws and remove the
chain guide slider retention plate and the starting
ring gear.
Engine
ENG - 157