10-12
General periodic maintenance
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4. Remove the check screw “4” and gasket
“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.
5. Place the outboard motor in an upright
position.
6. 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 visible.
7. Install a new gasket “1” and the check
screw “2”.
8. Remove the gear oil pump, and then
install a new gasket “1” and the drain
screw “2”.
TIP:
Before installing the magnetic drain screw,
make sure to remove all metal particles.
9. Tighten the check screw “3” and drain
screw “2” to the specified torque.
Checking the gear oil level
1. Check the gear oil level. See “Checking
the gear oil level” (10-6).
Greasing points
1. Apply water resistant grease to the spec-
ified lubrication points.
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5
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Recommended gear oil:
Hypoid gear oil
API: GL-4
SAE: 90
Oil quantity:
Regular rotation model:
0.980 L (1.036 US qt, 0.862 lmp qt)
Counter rotation model:
0.870 L (0.920 US qt, 0.766 lmp qt)
Drain screw “2”:
9 N·m (0.9 kgf·m, 6.6 ft·lb)
Check screw “3”:
9 N·m (0.9 kgf·m, 6.6 ft·lb)
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