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#41238

Walt Gifford
Participant

Are you talking about wear between the crank and the ID of the main bearing? I use to worry about that until I saw how they clearance the shaft on 125 shifter engines to loosen it up.

FAA certified jet engine and aircraft technician,
Nicholson Speedway class champion 2001,
Yamaha KT100 Service Center,
41 years karting experience