1982-1983 Official Honda ATC 200E Big Red Shop Manual, Page 77Get this manual
ATC200E
CYLINDER PISTON
Inspect the top of the cylinder for warpage
SERVICE LIMIT: .10 mm (0 .0039 in )
PISTON REMOVAL
Remove the pisto pin clip ith pliersNOT Do not le the clips fall into the crankcase
PISTON PIN CLIP