Craftsman Marine CM4.33 / CM4.42 — Changing of the engine lubrication oil
Maintenance · Engine lubrication system
For the Craftsman Marine CM4.33 / CM4.42, from the Craftsman Marine owner's manual.
Applies to: Craftsman Marine CM4.33, Craftsman Marine CM4.42, Mitsubishi CM4.33 engine, Mitsubishi CM4.42 engine
Before you start
- Oil temperature is about 80 degrees Celsius; watch out for burning the skin.
Parts for this job
- 15W40 Oil filter — Craftsman Marine CM4.33 Amazon Amazon eBay $94.00 eBay $49.74
- 15W40 Oil filter — Craftsman Marine CM4.42 Amazon Amazon eBay $94.00 eBay $49.74
Part numbers from the service-parts lists for Craftsman Marine CM4.33, Craftsman Marine CM4.42. Verify against your serial number before ordering; some links are affiliate links.
Procedure
- Run engine to operating temperature, then stop.
- Remove the dipstick and insert the hose of the special sump pump into the dipstick pipe.
- Extract the oil by quickly pushing down the grip of the sump pump and pulling it slowly upwards.
- Replace the oil filter after all oil has been drained.
- Collect used oil and bring it to a service station per environmental directives.
Tools required
- Special sump pump Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Full service-parts list: Craftsman Marine CM4.33 →, Craftsman Marine CM4.42 →
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.