Yamaha YFM25BX Owner's Manual page 103

1. Final gear oil
2. Correct oil level
3. Final gear oil filler bolt
3. If the oil is below the brim of the filler hole, add
sufficient oil of the recommended type to raise
it to the correct level.
4. Install the oil filler bolt, and then tighten it to the
specified torque.
Tightening torque:
Final gear oil filler bolt:
23 Nm (2.3 m·kgf, 17 ft·lbf)
To change the final gear oil
1. Remove the final gear case guard by remov-
ing the bolts.
1. Final gear case guard
2. Bolt
2. Place the ATV on a level surface.
3. Place an oil pan under the final gear case to
collect the used oil.
4. Remove the final gear oil filler bolt and the fi-
nal gear oil drain bolt to drain the oil from the
final gear case.
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