Oil change -- getting all the oil out of a Yanmar YSB 12

[CaseyF]

I just changed the oil in my Yanmar YSB 12 by syphoning the oil out through the dip stick hole, which is what a marine store owner suggested. I don't believe I got all the oil out, however. I got about two quarts, and as far as I can figure out I should have drained three from the sump.

Is there another way to pump or drain the oil out?

And I've heard there is an oil screen -- where do I find that and how do I clean it out?

Thanks!

Casey

 

[Granfalloon]

Oil removal

Was the engine warm? Did you use a metal tube for the insertion? You can make gentle bend and orient it towards the low point on the engine pan. In any event only put back the amount you take out - you don't want to overfill. Also you need to compute what amount of oil your filters holds.

Talk to some people around the marina who have done it.

 

[rad]

Oil

The YSM12 does not have a typical removable/ replaceable oil filter. It has a large wing nut type hand spin filter on the face of the engine. 15 turns every week should be enough. Remember - do not ever attempt to turn it while the engine is running. You will loose a finger to the water pump belt.
The oil pump I use is a Pela pump pressurized system with a small diameter hose that fits into the oil fill. IT is not fast but it is a clean way to pump oil and it has the ability to reach the lower depths of the oil sump. This is the best system I have used to date. Remember to run your engine to heat up the oil and to get all the sludge in to oil suspension. This way when you pump you will remove 99% of the bad stuff. The pump was about $35 on Ebay. Do a Google search for the best price. I bought the smaller one so I have to empty the plastic jug once during pumping. The smaller one fits into the storage hatch
As for oil you should use Shell Rotella 30 weight. The crankcase holds 3.3 liters or 3.48 quarts and the clutch case holds 0.7 liters or 0.74 quarts.
Dont forget to remove the spin filter (3 bolts) and clean it in a pan of fresh diesel while the pump is doing its thing.

 

[Steve Dion]

If you are that concerned....

Casey:

If you are that worried about getting it out I would suggest that you get a proper extractor. If you look at the WM catalogue it has a Moeller vacuum extractor. These things really do work good. The hoses are semi-rigid plastic and they do not collapse when submerged in the warm/hot oil.

1. Warm up your engine (not an easy thing to do with those raw water cooled models).

2. Remove all of the oil that you can.

3. Fill the engine to the proper level.

4. Warm up your engine again.

5. Remove all of the oil that you can (probably about 2 qts.)

6. Refill the engine to the proper level again.

This second extraction should get anything that you missed on the first round. If you are doing your oil changes 2 times a year I don't think you really need to worry about a few ounces of old oil mixed with a couple of quarts of fresh oil.

Be sure that you are using an oil that is designed for diesels. Your best bets are Shell Rotella or Chevron Delo. I use Delo because I can find it almost anywhere. This is not the case with the Shell product.