Author Topic: Yanmar 4JH3 lamp. Need help  (Read 265 times)

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Re: Yanmar 4JH3 lamp. Need help
« Reply #3 on: October 24, 2023, 01:20:34 PM »
I was able to get to the bulbs behind the panel by unscrewing the panel from the cockpit on my 44.  The bulbs were easy to pull out and replace.  You may or may not have the same configuration though.



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Re: Yanmar 4JH3 lamp. Need help
« Reply #2 on: October 14, 2023, 04:00:06 AM »
On our H54#50 we removed the galley roof panels to get to the back of the engine panel.  The bulbs just pull out of friction holders.  Takes a minute to replace them, an hour to reassemble the galley ceiling!

Not sure about the gauge cleaning.  They may be sealed units and you might have to replace.  See the Engine parts catalogue for all this stuff so you can order the right parts.

FYI the parts catalogue is very useful not only for getting parts, but also just to show how things fit together in the exploded diagrams. Way more useful than the users manual!


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Yanmar 4JH3 lamp. Need help
« Reply #1 on: October 13, 2023, 02:19:50 AM »
Hello, I need to replace a burned out Yanmar 4JH3 light and clean the oil pressure gauge. Is there anyone with experience who can guide me? Thank


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