Replacement Of Gear Oil - TOHATSU MFS25 Service Manual

Maintenance

9) Replacement of Gear Oil

1. Tilt outboard motor a little as shown.
Place drain oil pan below drain bolt 1, remove lower oil plug
2.
1 and then upper oil plug 2 to drain oil.
Remove lower oil plug first when draining.
3. Check gear oil for presence of metal particles, change of
color (abnormal if clouded), and viscosity. Check lower unit
internal components if necessary.
4. Fill with gear oil (from oil tube or pump) through lower plug
hole 1 until gear oil starts to spill from upper oil plug hole a
without air bubble.
Recommended Gear Oil :
OIL
Hypoid Gear Oil
API : GL-5 SAE : #90
Quantity of Gear Oil :
350 cm 3 (11.8 fl.oz)
Use lower plug hole when filling with gear oil.
Upper hole cannot be used because doing so
will not allow air to evacuate from gear case.
Attach new gasket and upper oil plug 2, and then new
5.
gasket and lower oil plug 1 immediately.
When fully filled with oil, attach upper oil plug
first.
3-10
1
2
1
2
1
2
a
a
25/30 2006