Yamaha BIG BEAR PROFESSIONAL 400 YFM400FPT Owner's Manual page 286

1. Bolt (× 3)
1. Boulon (× 3)
1. Perno (× 3)
1. Drain bolt
1. Boulon de vidange
1. Perno de drenaje
Replacing the final gear oil
1. Remove the final gear case cover by remov-
ing the bolts.
2. Place the ATV on a level surface.
3. Place a container under the final gear case to
collect the used oil.
4. Remove the oil filler bolt and the drain bolt to
drain the oil.
5. Install the drain bolt, and then tighten it to the
specified torque.
Tightening torque:
Final gear oil drain bolt:
23 Nm (2.3 m·kgf)
6. Add the recommended final gear oil to the
brim of the filler hole.
Recommended oil:
SAE 80 API GL-4 Hypoid gear oil
Oil quantity:
0.19 L
8-35