General periodic maintenance
10-19
1. Drain:
• Gear oil
a. Tilt the outboard motor so that the
drain screw is at the lowest point.
b. Place a drain pan “1” under the gear
oil drain hole.
c. Remove the drain screw “2” and gas-
ket “3”.
If there is a significant amount of metal par-
ticles on the magnetic drain screw, the low-
er unit may have a problem.
d. Remove the oil level plug “4” and gas-
ket “5” and let the oil drain completely.
After the gear oil has been drained, check
the used oil. If the oil is milky, water is get-
ting into the lower case, which can cause
gear damage.
e. After the gear oil has been drained,
check the used oil. Pressure test the
lower case and inspect the oil seal for
damage if the oil is milky. See “Check-
ing the lower unit for air leakage”
(8-18).
2. Fill:
• Gear oil
a. Place the outboard motor in an upright
positio
n.
b. Insert the gear oil pump into the drain
hole,
and then fill the lower unit slowly
with gear oil until oil flows out of the
check hole and no air bubbles are vis-
ible.
c. Install a new gasket “1” and the oil lev-
el plug “2”.
d. Remove the gear oil pump, and then
install a new gasket “1” and the
drain
screw “2”.
Before installing the magnetic drain screw,
make sure to remove all metal particles.
e. Tighten the oil level plug “3” and drain
screw “2” to the specified torque.
Gear oil quantity
0.760 L (0.803 US qt, 0.669
Imp.qt)
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