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Old 04-04-2021, 21:25   #16
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Re: How do I determine which model of Yanmar?

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Originally Posted by George DuBose View Post
why would anyone want to ignore a manual? The written word is a good thing.
Why would anyone assume that just because they found an engine manual on a boat that it was the proper manual for the engine on the boat?
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Old 04-04-2021, 22:45   #17
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Re: How do I determine which model of Yanmar?

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Why would anyone assume that just because they found an engine manual on a boat that it was the proper manual for the engine on the boat?

Think Occams razor
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Old 04-04-2021, 22:51   #18
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Re: How do I determine which model of Yanmar?

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Originally Posted by Celestialsailor View Post
You could always look at the manufacturers plate on the engine.
this was my first thought

yanmars have a manufacturers plate on the top of the engine. should have all the necessary info

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Old 04-04-2021, 22:56   #19
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Re: How do I determine which model of Yanmar?

[QUOTE=George DuBose;3380592]
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Originally Posted by Jdege View Post
but ignoring what I was told, and ignoring the manual, how can I tell which engine I have, just by looking at the engine?

why would anyone want to ignore a manual? The written word is a good thing.

Does the young generation no longer learn to read? I know my sons don't...
It seems that you are the one who does not read...
The manual pertains to three engines of a series. So the OP knows the series but not the actual model.
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Old 05-04-2021, 14:52   #20
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Re: How do I determine which model of Yanmar?

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Originally Posted by chrisr View Post
this was my first thought

yanmars have a manufacturers plate on the top of the engine. should have all the necessary info

Attachment 235921

cheers,
Yep. Except that it's exactly where 40 years of owners have stepped, when climbing down into the engine compartment.

It's no longer legible.
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Old 05-04-2021, 15:10   #21
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Re: How do I determine which model of Yanmar?

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Yep. Except that it's exactly where 40 years of owners have stepped, when climbing down into the engine compartment.

It's no longer legible.
oh, sorry to hear that (but there is a lesson there !) suppose no chance to use dye or ink rubbing to highlight any remaining engraving on the plate ?

if not, guess it's back to first principals : if it's a single pot it's a 1GM, 2 = 2GM, 3 = 3GM although this doesn't help with the exact model. for this you'll need to find the engine number and hope that's readable.

good luck !

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Old 05-04-2021, 15:31   #22
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Re: How do I determine which model of Yanmar?

I'm pretty sure it's a 3GM30, just like they said it was.

But I'm always looking to confirm or disprove my misconceptions. I make too many of them.
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