Why must you periodically inspect and change the final drive gear oil in automatic scooters?

1. The final reduction gearbox uses gears to reduce high transmission speed to wheel speed, and the oil degrades over time, risking gear wear and bearing noise.
2. The final drive oil cools the automatic clutch shoes to prevent them from burning.
3. It is mixed with the gasoline automatically to lubricate the rear wheel hub.
4. To prevent the drive belt from slipping on the rear pulley assembly.