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Generac Generators (SEARS, etc.)

Generac J609a to J609B Conversion


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  #1  
Old 05-04-2019, 07:12:48 AM
Tucci454 Tucci454 is offline
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Default Generac J609a to J609B Conversion

Hello all,

I got a Generac 5500 watt (actually a Briggs 01314-0) generator for short money. 11 HP OHV Briggs engine.

The generator head stator is fried, and they are pretty much made from unobtanium.

It appears that the drive type is J609A. Output shaft length ~2 7/8". Looking for a replacement head I am having trouble finding something with the A mounting. The crank case appears to have the bolt pattern for both A and B.

Is there a shaft adapter to allow a B type to bolt up? If there is, I can't find it.

Also, while searching I found several dead links here and other places for illustrations of both standards. Anyone have a good link?
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Old 05-04-2019, 04:27:42 PM
Tucci454 Tucci454 is offline
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Default Re: Generac J609a to J609B Conversion

Apparently, since my post was in the Generac sub forum the title has been changed by mods to reflect that. I intentionally titled it the way I did so future searchers might find it without having to have a manufacturer in the search.

Any adapter shaft for 609a to 609b would be sufficient regardless of the power head type or branding on the machine. To my eye it appears that if I could extend the shaft appropriately, a B style could bolt right up.

Or a link to the illustrations of the standards so that I may machine one.....
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Old 05-05-2019, 04:04:22 PM
Tucci454 Tucci454 is offline
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Default Re: Generac J609a to J609B Conversion

So, SAE wants $81 to view the 609 standard. That's crap.

Anyone have a 609b engine with no generator head that they can measure?
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Old 05-05-2019, 07:11:30 PM
pegasuspinto pegasuspinto is offline
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Default Re: Generac J609a to J609B Conversion

No offense, it's all over the internet.
http://lmgtfy.com/?q=j609b+shaft+dimensions
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Old 05-06-2019, 01:35:51 PM
Tucci454 Tucci454 is offline
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Default Re: Generac J609a to J609B Conversion

OH MY GOD. I searched for it every way except with those terms.

You are my hero, and boy do I feel stupid.

THANKS!!!
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Old 05-06-2019, 01:52:29 PM
Tucci454 Tucci454 is offline
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Default Re: Generac J609a to J609B Conversion

OK. Now I'm trying to make sense of this. Is this accurate?
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Old 05-06-2019, 01:59:30 PM
Tucci454 Tucci454 is offline
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Default Re: Generac J609a to J609B Conversion

Just getting some pictures together for easier reference
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