1998-2001 Yamaha YFM600FHM Grizzly Factory Service Manual, Page 161Get this manual
VALVESANDVALVESPRINGS 2.Replace: Valve guide
Replacement steps:
To ease guide removal, installation and to maintain correct fit heat the cylinder head in an oven to 100C (212F) Remove the valve guide using valve guide remover CD Install the new valve guide using valve guide remover CD and valve guide installer (1) After installing the valve guide, bore the valve guide using valve guide reamer to obtain proper stem-to-guide clearance
Valve guide remover (7 mm): PINYM-01225-A, 90890-01225 Valve guide installer: PINYM-04017, 90890-04017 Valve guide reamer (7 mm): PINYM-01227, 90890-01227