2009-2011 Honda FourTrax Rancher AT TRX420FA/FPA Service Manual, Page 239Get this manual

2009-2011 Honda FourTrax Rancher AT TRX420FA/FPA Service Manual, Page 239

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CYLINDERPISTON Never use wire brush; it will scratch the grooves
CYLINDER Inspect the cylinder bore for scoring or scratchesMeasure the cylinder 1.0at three levels in an and axisTake the maximum