Yamaha ULTRAMATIC GRIZZLY 660 YFM660FS Owner's Manual page 318

5. Fill the final gear case with oil.
Recommended oil:
See page 10-3.
Oil quantity:
Periodic oil change:
0.25 L
Total amount:
0.30 L
CAUTION:
_
Be sure no foreign material enters the final
gear case.
_
6. Install the filler bolt and tighten to the speci-
fied torque.
Tightening torque:
Filler bolt (final gear case):
23 Nm (2.3 m·kgf)
7. Check for oil leakage. If oil leakage is found,
check for the cause.
8-49