Craftsman Marine CM4.65 / CM4.80 — Winter storage
Maintenance · Engine
For the Craftsman Marine CM4.65 / CM4.80, from the Craftsman Marine owner's manual.
Applies to: Hyundai CM4.65 engine, Hyundai CM4.80 engine
Before you start
- Do not load the engine with this mixture; idle speed only
- Anti-freeze liquid is very poisonous; dispose of it correctly
Procedure
- Run the engine about 10 minutes with a protective mixture of 10% lubrication oil and 90% clean diesel fuel (idle speed only).
- Replace the oil filter and change the engine lubrication oil with a good quality protective oil.
- Close the raw water seacock, open the water strainer cover and run the engine while adding antifreeze until the seawater circuit is completely filled.
- Remove the impeller during winter storage.
- Make sure the inner cooling system contains sufficient anti-freeze.
- Disconnect the battery cables and charge the batteries from time to time.
- Drain water from the fuel filter/water separator and fit a new fuel filter.
Source: Craftsman Marine owner's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.