1986-1987 Honda Fortrax TRX70 Service Manual, Page 51Get this manual
CYLINDER HEADIVALVES CAMSHAFT Check for wear or damageUsing micrometer, measure the cam lobes height
SERVICE LIMIT: 25.69 mm (1 .0'1 Inl
Measure and record the camshaft journal 0.0M easure and record the camshaft journal 1.0in the cylinder headDetermine the camsha ft journal oil clearance
SERVICE LIMIT: 0.05 mm (0.002 in)