Yanmar servicing

[Jason K]

I am going to service my Yanmar 2QM15. Given my well documented (lack of) aptitude for marine engines, I figured I might as well start a topic now. :)

Actually, I'm ordering the parts and I want to make sure I'm not missing something. As a point of reference, I have no idea how long it's been since the motor was serviced or what was last done. According to the old owner, the oil and filters were changed regularly, but there is no evidence of that. The oil is at the fill line and the filters don't look too old, but everything will be changed out of an abundance of caution.

So far, the motor has run great. There's no smoke and there seems to be plenty of power.

Here's what's on the list so far. What am I missing?

- Change oil and oil filter
- Change fuel filter
- Change air filter
- Replace zinc
- Replace impeller and water pump gasket
- Replace alternator belt???
- Clean basket in raw water strainer
- Check hoses and clamps and replace as needed
- ?

[Tim]

Looks like a good list that covers most regular maintenance items.

If you question the belts at all, change them both now, and keep the old ones as spares (or throw away, depending).

Of course, be sure to check the transmission oil as well. This doesn't need changing often, but if you're looking to start fresh, it won't hurt to change it. Often, the Kanzaki transmissions that you might have use the same oil as the engine, but be sure to check the specs in any event. Transmission oil is usually OK unless it looks or smells burned.

Finally, remember that diesel engine oil will remain clear amber for as long as it takes to trickle through the engine as you pour it in. It will be dark black as soon as you check the dipstick, so don't be alarmed. This is normal.