2004-2005 Honda TRX450R Factory Sevice Manual, Page 167Get this manual

2004-2005 Honda TRX450R Factory Sevice Manual, Page 167

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CYLINDERPISTON Check th top of the cylinder for wa rpage with straight edge and feeler gauge across the stud holesSERVICE LIMIT; 0.05 mm (0.002 in)
Measure th ring end gap
SERVICE LIMITS:<