That looks like it could be an Xtreme electric scooter. If so, it uses a 350W motor. It sounds like the rear clutch might need to be replaced; if the chain turns but the scooter won't move, it's usually the rear clutch that needs replacing. Do you see a brass colored ring attached to the rear socket? That would be the clutch, you can pick up a replacement clutch for $7.00 from tncscooters.com. Good luck.