Yamaha VIKING Owner's Manual page 128

3. If the level is low, add sufficient oil of the
recommended type to raise it to the spec-
ified level. NOTICE: Be sure no foreign
material enters the differential gear
case.
4. Check the gasket for damage, and re-
place it if necessary.
5. Install the differential gear oil filler bolt
and its gasket, and then tighten the bolt
to the specified torque.
Tightening torque:
8
Differential gear oil filler bolt:
23 Nm (2.3 m·kgf, 17 ft·lbf)
Changing the differential gear oil
1. Park the vehicle on a level surface.
2. Place an oil pan under the differential
gear case to collect the used oil.
3. Remove the differential gear oil filler bolt,
the differential gear oil drain bolt and their
gasket to drain the oil.
1. Differential gear oil drain bolt
2. Gasket
8-18
2
1