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Old 29-11-2016, 14:27   #16
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Re: Possible to adjust the engine hours counter?

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Originally Posted by gamayun View Post
This made me chuckle. A true Occam's Razor conundrum.
I do not recall with certainty, but is Occam's Razor a method solving a conundrum? If so, which of those provided is the simplest? Is the most appropriate/simple solution an attempt to contact the PO and ask?
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Old 29-11-2016, 16:35   #17
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Re: Possible to adjust the engine hours counter?

The simplest explanation is probably the right one. So given 2 options: somehow the hour meter ran backwards or the PO made a mistake writing down the hours when changing oil, which explanation is simplest?
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Old 29-11-2016, 20:55   #18
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Re: Possible to adjust the engine hours counter?

On some counters if the wire leads get switched, whether intentionally or accidently, they run backwards.
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Old 29-11-2016, 21:32   #19
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Re: Possible to adjust the engine hours counter?

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I do not recall with certainty, but is Occam's Razor a method solving a conundrum? If so, which of those provided is the simplest? Is the most appropriate/simple solution an attempt to contact the PO and ask?
Occam's Razor does not seek solutions, it seeks to explain events.

In essence, if there are two possible explanations, the simplest one is the most likely.
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Old 29-11-2016, 21:33   #20
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Re: Possible to adjust the engine hours counter?

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The simplest explanation is probably the right one. So given 2 options: somehow the hour meter ran backwards or the PO made a mistake writing down the hours when changing oil, which explanation is simplest?
or the OP misread the POs number?
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Old 29-11-2016, 22:30   #21
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Re: Possible to adjust the engine hours counter?

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Occam's Razor does not seek solutions, it seeks to explain events.

In essence, if there are two possible explanations, the simplest one is the most likely.
You are correct, more or less. The conundrum being that less is more. I still have not figured out the pun in the post to which I replied.
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Old 30-11-2016, 12:01   #22
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Re: Possible to adjust the engine hours counter?

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Originally Posted by senormechanico View Post
I replaced the original engine hour meter when it died around 900 hours with a new electronic type.
To match the engine hours, I hooked up the input to a diode and small audio amplifier.
The volume control was used to match the input voltage.
I fed the amp with an audio generator.
By varying the frequency of the generator output, the meter thought time was passing really fast !
I ran it up until it matched the original.
This was done somewhere around the year 2002.
Interesting conundrum! Following a lightning strike the control box and control panel on my Volvo D2-75F had to be replaced. The new hour meter on the tacho of course reads ZERO. Any way to get this re-adjusted to the actual hours?
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Old 30-11-2016, 23:02   #23
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Re: Possible to adjust the engine hours counter?

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You are correct, more or less. The conundrum being that less is more. I still have not figured out the pun in the post to which I replied.
Conundrum - a confusing problem
Occam's Razor - a method for solving what might appear to be a confusing problem, but is actually quite simple

So an Occam's Razor conundrum might also be called an oxysimile...

So to speak if Shakespeare were still alive
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Old 01-12-2016, 04:55   #24
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Re: Possible to adjust the engine hours counter?

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Originally Posted by transmitterdan View Post
The simplest explanation is probably the right one. So given 2 options: somehow the hour meter ran backwards or the PO made a mistake writing down the hours when changing oil, which explanation is simplest?
Another simple one applies to my boat, too. The hour meters were replaced. The owner at the time marked the "old" meter hours in the maintenance log. Now to get "real" hours you have to add that "old" reading to what's showing on the meters.

Some day I'll hook them up to 12VDC and let them run until they match reality, but for now I know what to do.

Anyway, my theory is you change the oil when you buy a used boat, then start your maintenance schedule from there. That way you always know what you've got.
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Old 01-12-2016, 05:11   #25
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Re: Possible to adjust the engine hours counter?

The meter was probably changed. Look in the log if that is noted or the last owner did not log when the meter was changed.

My 1993 Volvo had 7000+ hours when I changed the meter. This is not a motor yacht, but if the power button is left on, the meter keeps running! I put 144 hours on when I left the power on for a week.

I found an email from the previous owner to Beneteau asking if he reversed the wires, would the meter run backwards? He probably did the same thing and was hoping to reverse the error.

My mechanic says: "If it starts right up, don't mess with it!" This was after I asked if I should adjust the valves....

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Old 01-12-2016, 10:56   #26
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Re: Possible to adjust the engine hours counter?

If the meter was changed it would mean there is over 1,000 hours on that oil change. I doubt that is the case.
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