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Yanmar Panel Assy YD25 problems

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MYPAGO View Drop Down
Sub Lieutenant
Sub Lieutenant


Joined: 03 March 2025
Location: La Spezia, Ital
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    Posted: 03 March 2025 at 08:39

I have recurring problems starting the engine with the Yanmar YD25 Panel installed in Yanmar 3JH 40 engine. This YD25 panel introduced in year 2019 has an electronic control on the engine ignition: if the panel does not work for any problem there is no way to start the engine! Which is terribly unsafe if this happens in open sea 50 miles away or in adverse sea conditions. Did anybody have a similar problem? Any solution?

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samuel View Drop Down
Admiral of the Fleet
Admiral of the Fleet


Joined: 26 December 2004
Location: United Kingdom
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Post Options Post Options   Thanks (0) Thanks(0)   Quote samuel Quote  Post ReplyReply Direct Link To This Post Posted: 03 March 2025 at 11:41
On the smaller Volvo engines one can fit a momentary switch with wiring between the starter solenoid & the electric supply . This bypasses all the switch gear & allows one to get the engine running. One will not get rev counter etc working but who cares in an emergency so long as one has propulsion. I have permanently installed the switch on a bracket in the engine bay. I have used reasonably heavy cable & a 60 amp switch. The engine has a stop button on the side but you can always just turn the fuel off when in port if you do not have any alternative.
Jump in at 5 minutes on this one
Presumably a similar system can be fitted to smaller Yanmar engines


Edited by samuel - 03 March 2025 at 11:55
Daydream Believer- Hanse 311- No GBR9917T- Bradwell Essex
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