1982-1983 Official Honda ATC 200E Big Red Shop Manual, Page 59Get this manual
ATC200E
CYLINDER HEAD VALVES
Using micrometerm easure the height of each ca lobe height and inspect it fo wear or damage STANDARDINTAKE: 31 .379 mm (1 .2354 in) EXHAUST: 30 .978 mm (1.2196 in) SERVICE LIMITINTAKE: 31 .199 mm (1 .2283 in) EXHAUST: 30 .798 mm (1.2125 in)
CYLINDER HEAD COVER REMOVAL
Remove the eng ine from the frame (Page)Remove the mm socket bolts and mm cap nutsRem ove the cyl inder head cover and remove the camshaft bushing