To maintain your marine oil and water suction vacuum cleaner, follow these steps:

1. Empty the waste bin after each use to prevent it from becoming too heavy or full.

2. Keep the suction hose and suction filter clean to ensure maximum suction. Remove any debris with a soft brush or compressed air.

3. Check and clean the filter regularly. Depending on the type of filter, you may need to rinse it with water or replace it. Follow manufacturer's instructions for maintenance.

4. When not in use, please put the vacuum cleaner in a dry and well-ventilated place. This will help prevent rust and other damage.

5. Perform a thorough inspection of the vacuum cleaner before each use to ensure that all parts are in good condition and functioning properly.

6. Follow the manufacturer's instructions for any additional maintenance or service that may be required.

By following these steps, you can help ensure that your marine oil and water suction vacuum stays in good working order and continues to effectively remove oil and water from your boat.