2003 Yamaha YFM400FAR Kodiak Factory Service Manual, Page 106Get this manual
CHANGING THE FINAL GEAR OIL
CHANGING THE FINAL GEAR OIL 1.Place the machine on level surface2.Remove: Final gear case protector 3.Place receptacle under the final gear case
4.Remove: Oil filler bolt Drain plug 5.Drain: Final gear oil
6.Install: Drain plug