2010-2012 PRO-RIDE RUSH Switchback RMK Service Manual, Page 305Get this manual
Steering and Suspensions Progressive 121 Idler Shafts
REAR IDLER WHEELS ADJUSTER SPACER WASHER INNER SHAFT
INSTALL TORQUE ARM BOLT IN THIS DIRECTION
ADJUSTER SPACER
INNER SHAFT SPACERS WASHERS ANODIZED SHAFT