1986-1987 Honda Fortrax TRX70 Service Manual, Page 52Get this manual
CYLINDER HEADVAlVES VALVE STEM Inspect each valve for bending burning,
scratches or
abnormal stem wearCheck valve movement in the guideMeasure and record each valve starn 0.0SERVICE LIMIT: INEX.40 mm (0.213 inl
VALVE GUIDE
Ream the guide to remove any carbon build-up before chec king the valve guide 1.0
Valve guide reamer
07984098000A Of 079840980000 (U .S .Aonly)
Measure and record each valve guide 1.0using small hole gauge or inside micrometer
SERVICE LIMIT: INEX5.50 mm (0.217 in)