Kickstarter Pinion For Yamaha Aerox, Jog, Zuma.
Very easily replaced part, only requires the removal of the transmission cover, new part slots into place.
The starter pinion is essentially the part that allows either the starter motor of kick starter to engage with the motor for starting, and then disengage once the motor has started. Piaggio 50 – 100cc models have two starter pinions, one for the electric starter motor and another for the kick starter. The kick starter pinion rests via a pin and bush into the transmission cover, and is engaged by the kick start lever.
These can eventually wear out, if you’ve had a major failure of one of the parts inside your transmission, this can also cause failure.
Get a new one in there, and be on your way!