Before you start
Gather the appropriate supplies and review the specific equipment manual.
- Engine manual
- Clean rag
- Flashlight
Step-by-step instructions
Start with a cold, stopped engine
Secure loose clothing, make sure the engine cannot start accidentally, and open the engine compartment with good lighting.
Check fluid levels
Follow the engine manual for the correct dipstick and coolant procedures. Never remove a pressurized coolant cap when hot.
Look for leaks and wear
Inspect under the engine for fresh fuel, oil or coolant, and check belts and hoses for cracking, chafe or unusual looseness.
Check the raw-water intake and start-up
Confirm the correct seacock position before starting. Once running, check that cooling water exits with the exhaust and look for unusual alarms or smoke.
Log anything unusual
Record hours, fluid top-ups, visible leaks and alarms so changes become easier to spot.
Safety note
Never reach around a running belt, hot exhaust or moving shaft. Stop the engine and get qualified help for fuel leaks or overheating.
Key takeaway
A five-minute routine can reveal a developing problem before it becomes an offshore failure.
Keep this job on your maintenance schedule
Save the topic as a maintenance task, choose a due date or engine-hour target, and record future service. Free and stored on your device.
Add to my maintenance plannerThis guide is for general education. Follow your equipment manufacturer’s instructions, current navigation guidance and applicable marine safety standards. When uncertain, use a qualified marine professional.