2010-2012 PRO-RIDE RUSH Switchback RMK Service Manual, Page 90Get this manual

2010-2012 PRO-RIDE RUSH Switchback RMK Service Manual, Page 90

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EngineCoolingExhaust Cylinder Measurement
MIDDLE (Measured above exhaust port) Y

BOTTOM (Measured below transfer port) Y

Out-of-RoundTopTop and BottomBottom TaperTopBot