Check the anode of underwater unit; Remove oil stains and scale; If damage or corrosion
exceeds 1/2, replace the anode.
Note:
Do not oil or paint the anode to avoid anode failure.
Lubricating point
1. Fill or apply waterproof grease with an oil gun at the position shown.
2. Apply anti-corrosion grease to the propeller shaft.
Cooling water channel
1. Check whether the inlet of cooling water channel is blocked. Clean it if necessary.