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Go Back   SailNet Community > General Interest Forums > Gear & Maintenance > Engines > Diesel
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Diesel This is a new forum dedicated to diesel engines and their applicable accessories.


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Old 03-15-2010
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Yanmar oil fill question

I can't believe I need to ask this question. My new to me boat has a Yanmar 4JH3E 56 hp engine. I am about to do the first oil change and I am puzzled.

It has the standard cap on the valve cover that I have used on every engine I have ever serviced to put oil in. However it also has an orange cap on the oil pump that shows to fill there. It also shows this in the manual but not clearly nor does not specify it must be filled here and not the other.

Anyone out there have the real scoop on this issue? Is some oil needed there just to prime the pump? Any other possible reason?



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Gene
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Old 03-15-2010
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There are two since Yanmar knows some boat mfgs like to make access difficult. Either will work just fine and considfer yourself lucky if you have free access to both.
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Old 03-15-2010
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Thanks k1vsk. That actually makes sense!

Gene
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I've got the same or very similar engine, I've filled from the top w/out a problem.
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Good to know rmtayloriii. Thanks
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