Yamaha Ultramatic GRIZZLY 660 Owner's Manual page 134

4. Install the drain bolt and tighten it to the
specified torque.
Tightening torque:
Drain bolt:
10 Nm (1.0 m·kgf, 7.2 ft·lbf)
5. Fill the differential gear case with oil.
Recommended oil:
SAE 80 API "GL-4" Hypoid gear oil
Oil quantity:
Periodic oil change:
0.28 L (0.25 Imp qt, 0.3 US qt)
Total amount:
0.33 L (0.29 Imp qt, 0.35 US qt)
CAUTION:
_
Be sure no foreign material enters the dif-
ferential gear case.
_
6. Install the filler bolt and tighten it to the
specified torque.
7. Check for oil leakage. If oil leakage is
found, check for the cause.
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