1981-1984 Official Honda ATC250R Shop Manual, Page 54Get this manual
CYLINDER HEADCYLINDERPISTON
ATC 250R
PISTON RING INSPECTION
Insert the piston rings into the cylinderpiston to square the ring in the cylinderUse the
Measure each piston ring's end gap with feeler gaugeSERVICE LIMITS: TOP: 0.5 mm (0.02 in) BOTTOM: 0.5 mm (0.02 in)
Install the top and bottom rings (Page 5-8)NOTE PISTON