Good Sam Club Open Roads Forum: Tech Issues: Older Yamaha EF1000
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 > Older Yamaha EF1000

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pinesman

virginia

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Posted: 06/07/19 04:56pm Link  |  Quote  |  Print  |  Notify Moderator

I have the opportunity to get an older Yamaha EF1000 for dirt cheap. The gentleman says the voltage on the meter does not go much above 100 volts like it is not automatically revving up. This is not the newer EF1000is and it has beensitting for several years. Does anybody know anything about this particular model and what might be the problem? It is cheap enough if it is something simple but I do not want to spend a bunch of money on it since I will just use it to charge my batteries. Thanks.

SoundGuy

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Posted: 06/07/19 06:54pm Link  |  Quote  |  Print  |  Notify Moderator

pinesman wrote:

I have the opportunity to get an older Yamaha EF1000 for dirt cheap. The gentleman says the voltage on the meter does not go much above 100 volts like it is not automatically revving up.


I'd bet the reason you haven't received any response is because others are thinking exactly what I'm thinking - "dirt cheap" or not, why would anyone buy a genset that obviously has a problem? [emoticon]

pinesman

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Posted: 06/07/19 07:09pm Link  |  Quote  |  Print  |  Notify Moderator

The guy is asking $125 so I figure if it is a simple fix, I could spend some money and still come out ok

BFL13

Victoria, BC

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Posted: 06/07/19 07:09pm Link  |  Quote  |  Print  |  Notify Moderator

The OP wants it for battery charging. He doesn't know, or knows but doesn't care, about the relationship between generator VA, charging amps, and charging rates for AH of battery bank, and I am tired of explaining it (for now anyway). [emoticon]


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road-runner

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Posted: 06/07/19 07:24pm Link  |  Quote  |  Print  |  Notify Moderator

If the output voltage is no much over 100 with no load, then it's not a reving-up problem. I suppose it could be something simple like a bad internal wiring connection. My guess is that probability-wise, it's something not worth the cost of fixing like the alternator or the inverter. I view it as a roll-the-dice and see how you come out proposition. If you don't have electrical troubleshooting experience and an oscilloscope I think the deck is stacked against you. For some it would be worth the cost just for the learning experience.


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pinesman

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Posted: 06/07/19 07:28pm Link  |  Quote  |  Print  |  Notify Moderator

There has to be one in every group so moving on, does anyone have any experience with this particular generator?

time2roll

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Posted: 06/07/19 08:23pm Link  |  Quote  |  Print  |  Notify Moderator

$20 would be dirt cheep. For $125 it better work.


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shastagary

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Posted: 06/07/19 10:49pm Link  |  Quote  |  Print  |  Notify Moderator

a friend of mine had the original Yamaha EF1000 that we used mostly to charge his boat batteries on his house boat if it had been sitting and not used for a long time we had to take apart the carburetor and clean it with a can of carb cleaner then it would run great again.
if the voltage is low the frequency will be running low also.
there is a governor and speed adjustment to adjust to correct it there is a service manual available for it.
it was a great generator and he was very mad when someone stole it.


adjustment page

Lynnmor

Red Lion

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Posted: 06/08/19 06:02am Link  |  Quote  |  Print  |  Notify Moderator

shastagary wrote:

a friend of mine had the original Yamaha EF1000 that we used mostly to charge his boat batteries on his house boat if it had been sitting and not used for a long time we had to take apart the carburetor and clean it with a can of carb cleaner then it would run great again.
if the voltage is low the frequency will be running low also.
there is a governor and speed adjustment to adjust to correct it there is a service manual available for it.
it was a great generator and he was very mad when someone stole it.


adjustment page


Finally a sensible answer. The carb is likely gummed up and can be cleaned for cheap. Ethanol laced fuel needs to be drained before storage, or you might be doing this in most any engine. Don't mess with the governor till all else is working.





SoundGuy

S Ontario

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Posted: 06/08/19 08:21am Link  |  Quote  |  Print  |  Notify Moderator

pinesman wrote:

The guy is asking $125 so I figure if it is a simple fix, I could spend some money and still come out ok


The key word here is "if" - and IF it's anything that a quick carb clean won't fix you can bet that any replacement parts you may have to buy, even if available for this "older" genset, won't be inexpensive. [emoticon] Obviously none of us here on the internet can ascertain what the real problem is with this genset without actually seeing it and it's your $$$ to throw away as you wish. My own opinion is I don't see the point as the chances of getting this thing running properly without pouring a lot of $$ into it for replacement parts don't seem good, assuming you can even get them. [emoticon]


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