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Old 08-08-2019, 07:34 PM   #1
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New to me Mainship 430 Aft-cabin

I'm the new owner of a 2002 Mainship 430 aft-cabin and have a few "to do" items. The first I've noticed is a big discrepancy between what the hour meters at the upper and lower helms record for the main engines and reality. My first cruise was a 8 hour trip north from Miami and found the port engine VDO guage recorded 8 hours and the starboard only 4. So my question, how/where do I begin to troubleshoot or do I actually bother and instead install hour meters at the engines?

Thanks in advance.

-db-
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Old 08-08-2019, 08:21 PM   #2
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Welcome aboard. Congrats on your new boat.
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Old 08-08-2019, 09:03 PM   #3
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I installed a new separate meter and logged it with a date. You can't rely on what you can't rely on.

Are the present hour meters part of the tach? What are the readings, hundreds, thousands or many thousands? Just curious. What year is the boat, what does the P.O. say?

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Old 08-09-2019, 02:49 AM   #4
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great boat

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Old 08-09-2019, 05:52 AM   #5
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Hobbs meters fail with regularity. The Hobbs that is recording half time probably needs to be replaced.
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Old 08-09-2019, 06:11 AM   #6
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The hour meters are part of the tachs, but since I have twin Yanmars the port/stbd meters differ from each other also.
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Old 08-15-2019, 04:31 PM   #7
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Welcome. We have the same boat, but a year newer. Also twin Yanmars.
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Old 08-15-2019, 04:51 PM   #8
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Nice to meet you

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Welcome. We have the same boat, but a year newer. Also twin Yanmars.
Lots of “deferred maintenance “ in mine. Might make me a poor man also.
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Old 08-15-2019, 05:21 PM   #9
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Ah, but you get to have all the fun of working on your boat. And you will get to know the boat very well...
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Old 08-15-2019, 06:20 PM   #10
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So back to my question - upper and lower helm starboard side hour meters run "slow" and are about equal and port side are close to equal, which to me rules out the meters themselves.

I'm thinking a loose connection somewhere causing intermittent operation, but everything looks tight. One other possibility - batteries are going bad, I have to parallel them to start the starboard, so perhaps things will improve after they're replaced next week.
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Old 08-15-2019, 06:50 PM   #11
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I would guess defective meters. I picked the hour meter that matched my actual time of engine running and just use that one. Since both engines are running at the same time, that's close enough for me.
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