Go to
www.ctoa,,,think theres alot of info there,,,or post up on chinese tractor board if you can't,,,,,got an older troy built,8 hp horse,,got it about 13 years ago,,still is a beast,,,yeah,,you would think the chinese would have something in this regard,,,,they make good motors I'm thinking,,,,,trouble is with this stuff is dealer,,[who is it,,who do you trust,parts,etc] if you find out anything,,let us know,,,thingy