2004 Official factory service manual for Yamaha YFZ450S ATV Quad., Page 298Get this manual

2004 Official factory service manual for Yamaha YFZ450S ATV Quad., Page 298

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SWINGARM AND DRIVE CHAIN
2 Check: pivot shaft Roll the axle on flat surfaceBends ReplaceWARNING
Do not attempt to straighten bent pivot shaft3 Clean: pivot shaft spacer bearings bushings R