Yamaha BIGBEAR YFM400NM Owner's Manual page 118

b. Place the machine on a level place.
c. Place a container under the final gear
case.
d. Remove the oil filler bolt and the drain
bolt to drain the oil.
1. Drain plug
e. Install the drain bolt and tighten to the
specified torque.
Tightening torque:
Drain bolt (final gear case):
23 Nm (2.3 m·kg, 17 ft·lb)
f. Fill the final gear case with oil.
Recommended oil:
SAE 80 API "GL-4" Hypoid gear oil
Oil quantity:
Periodic oil change:
0.23 L (0.20 Imp qt, 0.24 US qt)
Total amount:
0.25 L (0.22 Imp qt, 0.26 US qt)
CAUTION:
Be sure no foreign material enters the final
gear case.
g. Install the filler bolt and tighten to the
specified torque.
Tightening torque:
Filler bolt (final gear case):
23 Nm (2.3 m·kg, 17 ft·lb)
h. Check for oil leakage. If oil leakage is
found, check for the cause.
i. Reinstall the final gear case cover.
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