Yamaha YFM4FGW Owner's Manual page 112

2. Place an oil pan under the differential gear
case to collect the used oil.
3. Remove the differential gear oil filler bolt and
the differential gear oil drain bolt to drain the
oil from the differential gear case.
8
1. Differential gear oil filler bolt
1. Differential gear oil drain bolt
4. Install the drain bolt, and then tighten it to the
specified torque.
Tightening torque:
Differential gear oil drain bolt:
10 Nm (1.0 m·kgf, 7.2 ft·lbf)
5. Add the specified amount of the recommend-
ed differential gear oil.
NOTE:
G
Do not exceed the specified differential gear oil
quantity when filling. Overfilling will cause the oil
to seep out of the breather hose during and after
riding.
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