Maintenance
50
3.
Remove the gear oil drain screw.
NOTE:
If the magnetic gear oil drain screw
equipped: remove all metal particles from
the screw before installing it.
4.
Remove the oil level plug to allow the oil
to drain completely.
CAUTION:
ECM00710
Inspect the used oil after it has been
drained. If the oil is milky, water is getting
into the gear case which can cause gear
damage. Consult a Yamaha dealer for re-
pair of the lower unit seals.
NOTE:
For disposal of used oil consult your Yamaha
dealer.
5.
With the outboard motor in a vertical po-
sition, and using a flexible or pressur-
ized filling device, inject the gear oil into
the gear oil drain screw hole.
6.
When the oil begins to flow out of the oil
level plug hole, insert and tighten the oil
level plug.
7.
Insert and tighten the gear oil drain
screw.
EMU29302
Cleaning fuel tank
WARNING
EWM00920
Gasoline is highly flammable, and its va-
pors are flammable and explosive.
●
If you have any question about properly
doing this procedure, consult your
Yamaha dealer.
●
Keep away from sparks, cigarettes,
flames, or other sources of ignition
when cleaning the fuel tank.
●
Remove the fuel tank from the boat be-
fore cleaning it. Work only outdoors in
an area with good ventilation.
●
Wipe up any spilled fuel immediately.
●
Reassemble the fuel tank carefully. Im-
proper assembly can result in a fuel
leak, which could result in a fire or ex-
1. Gear oil drain screw
2. Oil level plug
ZMU03133
2
1
Recommended gear oil:
Hypoid gear oil SAE#90
Gear oil quantity:
610.0 cm
3
(20.62 US oz) (21.51
Imp.oz)
ZMU03887
Summary of Contents for 90D
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