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Maintenance
93
TIP:
If the propeller nut slot does not align with the
propeller shaft hole after tightening the pro-
peller nut to the specified torque, tighten the
nut further to align the slot with the hole.
EMU44541
Changing gear oil
WARNING
EWM02531
Make sure that the outboard motor is
mounted securely to the transom or a
stable stand. You could be severely in-
jured if the outboard motor falls on you.
Never get under the lower unit while it is
tilted. Severe injury could occur if the
outboard motor accidentally falls.
1.
Tilt the outboard motor so that the gear
oil drain screw is at the lowest point pos-
sible.
2.
Place a suitable container under the gear
case.
3.
Remove the gear oil drain screw and
gasket. The screw is magnetic so a small
quantity of metal particles on the end of
the screw is normal. Simply remove
them.
NOTICE:
If there is an excessive
quantity of metal particles on the
magnetic gear oil drain screw, this
can indicate lower unit problem. Con-
sult your Yamaha dealer.
[ECM01901]
TIP:
Always use new gaskets. Do not reuse the re-
moved gaskets.
4.
Remove the oil level plug and gasket to
allow the oil to drain completely.
NOTICE:
Check the used gear oil after
it has been drained. If the gear oil is
milky or contains water or a large
amount of metal particles, the gear
case may be damaged. Have a
Yamaha dealer check and repair the
outboard motor.
[ECM00714]
TIP:
For disposal of used oil, consult your Yamaha
dealer.
5.
Put the outboard motor in a vertical posi-
tion. Using a flexible or pressurized filling
device, inject the gear oil into the gear oil
drain screw hole.
1. Gear oil drain screw
1
2
ZMU08022
2. Gasket
1. Gasket
2. Oil level plug
Recommended gear oil:
Yamalube Marine Gearcase Lube HD
or Hypoid gear oil
Recommended gear oil grade:
SAE 90 API GL-4 / SAE 80W API GL-
5 / SAE 90 API GL-5
Gear oil quantity:
0.980 L (1.036 US qt, 0.862 Imp.qt)
2
1
ZMU08023
U6EH32E0.book Page 93 Wednesday, November 19, 2014 2:58 PM
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2019 Yamaha Motor Corporation, U.S.A.