I put this kit Gas Bike Storm 49cc 4 Stroke Bicycle Motor - Gas Bike Storm 49cc 4 Stroke Bicycle Engine Kit on my bike. There is plenty of oil in the oil tank, the correct gas in the gas tank. I idled the bike for at least 10 minutes and it sounds great. When I try and ride it the gearbox screams twice as loud as the engine. The damn chinese (no offense to any race, just the people working there) tore the heads on the screws holding the gearbox together so I can't even unscrew it. Any idea why there would be loud 10k rpm kawasaki ninja like screaming coming from the gearbox when I run this thing? Or would it be something else. Is this normal? Never CHINESE AGAIN! It sounds awesome if I rev the engine a bike while I'm sitting and the gears in the gearbox aren't turn but as soon as I start moving forward I hear all this squealing. I'm going to see if I can get to a lowes or something for them to get that stuck screw out. And maybe put in new gears or I dunno anything!
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