2013 600 IQ Racer Service Manual 9923892, Page 60Get this manual
Engine and Cooling Systems Bearing Fit
Any time crankshaft bearing failure occurs and the case is reused, check the bearing fit into the case halves using the following procedureWith case halves cleaned, press replacement bearing into each of the main bearing journals to determine basic amount of press fitDo comparison check of all journals by manually forcing the bearing into the bearing seats noting if any are noticeably loose or tightNormal hand installation will be an indication of the recommended interference fitIf the bearing falls out of the case when the case is inverted, or if the crankcase bearing surface is severely galled or damaged, the crankcase assembly should be replaced
Connecting Rod Lower Bearing
= In mmMain Bearing Interference Fit: Racer.0014-.0024 (0.036-0.061mm)