motocross169
Member
- Jan 19, 2010
- 2
- 0
i am new to motorcycles. and i was wondering how this should be done for best engine life.i have a 2000 yz 125. i put in new wiesco crank and wiesco piston kit, and had cylinder re nikasiled. how do i break the engine in. and how often should i change the oil in the crank case.