What causes Reed valve wear causes poor low-end power on the Yamaha Aerox Yq50 (dismantled Scooter)?

Rev engine, listen for rattling or loss of pull Estimated fix cost: $20-$50

What causes Variator and belt wear from high mileage on the Yamaha Aerox Yq50 (dismantled Scooter)?

Check for jerky acceleration or slipping at takeoff Estimated fix cost: $40-$80

Pull plug, look for seizure marks or blue smoke Estimated fix cost: $100-$250

Cold start behaviour, hesitation or flooding signs Estimated fix cost: $10-$30

Known issues to inspect before buying a used Yamaha Aerox Yq50 (dismantled Scooter). What to check and how much repairs cost.

MODERATE

Rev engine, listen for rattling or loss of pull

Fix cost: $20-$50

MODERATE

Check for jerky acceleration or slipping at takeoff

Fix cost: $40-$80

SERIOUS

Pull plug, look for seizure marks or blue smoke

Fix cost: $100-$250

MINOR

Cold start behaviour, hesitation or flooding signs

Fix cost: $10-$30

☐Confirm oil injection pump works correctly

☐Check frame for crash damage or welds

☐Inspect exhaust for holes or heavy carbon

☐Request reason why scooter was dismantled

Decent if maintained, fragile when neglected