1998-2001 Yamaha YFM600FHM Grizzly Factory Service Manual, Page 123Get this manual
FINAL GEAR REPLACEMENTI DIFFERENTIAL GEAR OIL REPLACEMENT 4.Remove: Oil filler bolt Drain plug G) 5.Drain: Final gear oil
6.lnstall: 1')123 Nm 12.3 kg, 17 ft Ib) Drain plug NOTE: Check the gasket (drain plug)If it is damaged, replace it with new one7.Fill: Final gear case Periodic oil change: 0.19 (0.17 Imp qt, 0.20 US qt) Total amount: 0.22 (0.20 Imp qt, 0.23 US qt) Recommended oil: SAE80 API "GL-4" Hypoid gear oil