2010-2012 PRO-RIDE RUSH Switchback RMK Service Manual, Page 93Get this manual
EngineCoolingExhaust Crankshaft Runout Inspection Connecting Rod Lower Bearing
1Support the crankshaft in set of "V" blocks as shown2Use dial indicator to measure the runout at the following locations: PTO endFirst taper after bearing flat MAG end12" from bearing flat3Runout deflection cannot exceed .0025" (.07mm)4If the runout deflection exceeds the maximum specification, crankshaft trueing may correct the deflectionMeasure connecting rod big end side clearance with feeler gauge on both sides of the connecting rodThe side clearance on either side of the connecting rod cannot exceed the connecting rod side clearance specificationThe difference between the two clearance measurements cannot exceed the maximum clearance differential specification
Main Bearing