CDHPOWER YD85cc Motor Replacement Top End Cylinder Kit and Bottom End Crank Set for 2 stroke YD85CC motor.
1. For new motor run-in period is 300km at least. 2. During run-in period, it is prohibited to accelerate throttle handle too fast, you can grip the handle slowly (step by step), or the motor will be locked up. 3. Mixing ratio of fuel and engine oil: 16:1 for new sets, 20:1 after running 500km.
Bore and Stroke: 52mm x 40mm; Better adjusting clutch a little before riding; Excluding manual; 52mm bore; Improved magneto as well
Cylinder inner diameter 52mm; Piston outside diameter 52mm; 8mm front and rear mount studs; 40mm alum intake stud spacing; 52mm muffler stud spacing
It comes as first pictured;YD85CC MOTOR REPLACEMENT PARTS ONLY. piston kit is installed well inside of cylinder already