Small Engine Troubleshooting Problems? Ask a Mechanic Now.
hello welcome to just answers.. My name is Bill.
Check your drive belt you might have a fail bearing or something stuck in the belt..
Does the white smoke you see smell like rubber burning?
the engine runs fine right? i would rule out the engine i would check over your belt something is stuck to make it not turn.. the reason you are seeing smoke is because the engine is turning but the belt isnt.. So when you take the brake off you are tighten up the belt and the only thing turning is the engine..