Quote:
Originally Posted by kz1000st
The valves need adjusting. A small GY6 has its valves gapped at .002 inch and the valves stretch a little requiring an adjustment at the rocker arms. Check the gaps when you reassemble it and you will see.
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Hello, the thing is that i builded scooter more than year ago with old cylinder and new piston. It went unbelibevle for two weeks, than it losed power. I changed vario, belt, clutch, ignition, engine head, crankshaft, camshaft, oil pump, final drive grearing and all bearings.
It gained a little bit of power, but not enought. I ajdusted valve clearance few times in meanwhile.
Thanks for anwsers!