2000 Yamaha YFM400FWA(M) Factory Service workshop Manual, Page 101Get this manual
DIFFERENTIAL GEAR OIL INSPECTION DIFFERENTIAL GEAR OIL REPLACEMENT
INSP ADJ
DIFFERENTIAL GEAR OIL INSPECTION 1.Place the machine on level surface2.Remove: Oil filter bolt Oil drain plug 3.Drain: Differential gear oil 4.Install: 10 Nm (1.0 kg, ft lb) Oil drain plug 5.Fill: Differential gear oil Recommended oil: SAE 80 API "GL-4" Hypoid gear oil Oil quantity (periodic oil change): 0.35 (0.31 Imp qt, 0.37 US qt)
CAUTION:
Take care not allow foreign material to enter the final gear case6.Install: Oil filter bolt