Yamaha YFM40FBB Owner's Manual page 97

3. Place an oil pan under the final gear case to
collect the used oil.
4. Remove the final gear oil filler bolt, the final
gear oil drain bolt and their O-ring to drain the
oil from the final gear case.
1. Final gear oil drain bolt
2. O-ring
5. Install the drain bolt and its new O-ring, and
then tighten the bolt to the specified torque.
Tightening torque:
Final gear oil drain bolt:
24 Nm (2.4 m·kgf, 17 ft·lbf)
1
6. Refill with the recommended final gear oil to
the brim of the filler hole as shown. NOTICE:
Be sure no foreign material enters the final
gear case.
1
1 2
2
3
4
1. Final gear oil filler bolt
2. O-ring
3. Final gear oil
4. Correct oil level
Recommended final gear oil:
See page 10-1.
TIP
If the recommended oil is not available, SAE80W-
90 API GL-5 Hypoid gear oil may be used instead.
8-17
[ECB00421]
8