2010-2012 PRO-RIDE RUSH Switchback RMK Service Manual, Page 94Get this manual
EngineCoolingExhaust Piston Needle Bearing
1Clean the end of the connecting rod and inspect inner bore with magnifying glassLook for any surface irregularities including pitting, wear, or dents2Run fingernail around the inside of the rod and check for rough spots, galling, or wear3Oil and install needle bearing and pin in connecting rod4Rotate pin slowly and check for rough spots or any resistance to movement5Slide pin back and forth through bearing while rotating and check for rough spots