Craftsman Marine CM4.42 troubleshooting: 13 fault codes and symptom-cause-remedy entries from the manufacturer's own service documentation.
Craftsman Marine CM4.42 — full specs, parts & maintenance.
| Symptom | Cause | Remedy |
|---|---|---|
| Starter motor does neither rotate nor engage | Defective or discharged battery, Burnt fuse, Loose or corroded connections in the starter circuit, Defective starter switch or relay, Defective starter motor or pinion does not engage, Starter relay not activated owing to insufficient voltage, on account of a too long cable from engine to instrument panel, Jammed components | Check battery/charge or replace and check alternator for proper functioning, Replace, Clean and tighten the connections, Replace defective component, Replace starter motor Fit an auxiliary starter relay |
| Engine becomes overheated | Level of cooling liquid too low, Raw water seacock closed | |
| Oil level too high | Lower oil level | |
| Oil level too low | Top up / Replace | |
| Defective oil filter | Check / clean or replace if necessary | |
| Fuel filter clogged up by water and/or dirt | Check / replace | |
| Defective injector / injection pump | Check / replace | |
| Filter of electrical fuel lift pump clogged | Check / replace | |
| Defective electrical fuel lift pump | Replace defective component | |
| Excessive inclination angle of engine | Check / adjust alignment | |
| Incorrect SAE-specification or quality of lubrication oil | Replace by good quality engine lubricating oil | |
| Excessive wear and tear to cylinder or piston | Check compression; overhaul engine, if needed | |
| Insufficient supply of combustion air | Check air inlet and ventilation openings in engine room |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.
Documented causes: Defective or discharged battery, Burnt fuse, Loose or corroded connections in the starter circuit, Defective starter switch or relay, Defective starter motor or pinion does not engage, Starter relay not activated owing to insufficient voltage, on account of a too long cable from engine to instrument panel, Jammed components. See the table for the matching fixes.
Documented causes: Level of cooling liquid too low, Raw water seacock closed. See the table for the matching fixes.