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Lower Casing Unit
Gear Oil
Check gear oil level
Remove the oil level plug screw. If there is oil spill, the oil level is correct. If there is no oil
spill, add oil to it.
1. Oil level plug screw
Change gear oil
1. Place the outboard motor upright.
2. Place a container with sufficient capacity under the outboard motor.
3. Remove the oil drain screw, and then remove the oil level plug screw to drain the gear
oil.
1. Oil level plug screw 2. Oil drain screw
4. Inject gear oil into the oil drain screw hole using the pressure filling device.
5. When gear oil spills out of the oil level plug hole, install the oil level plug screw.
6. Install the oil drain screw; Wipe off the spilled gear oil.
Note:
Check the drained gear oil. If gear oil is emulsified, check the seal and replace it if necessary. If there
are metal debris in the gear oil, check the gears and bearings.
Attention:
A new drain screw gasket must be replaced every time.
Air tightness Inspection of Lower casing Unit
Connect the leak detection device to the oil level plug hole to check the air tightness of the Lower
casing unit. If the pressure drops (the pressure is 1kg/cm
3
), check the oil seal and other components.
General maintenance
Anode
Check the anodes of the Lower casing unit and the engine (installed on the thermostat cover);
Remove oil and scale; If damage or corrosion exceeds 1/2, replace the anode.
Attention:
Do not apply oil or paint to the anode to avoid failure of the anode.
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