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Starter/Generator Pulley Size for Wisconsin Large Frames

bolens starter generator pulley

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3 replies to this topic

#1 framesteer OFFLINE  

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Posted March 19, 2016 - 02:02 PM

Restoring a 1250 that had no starter/generator when I got it.  I've rebuilt a S/G off a tube frame, but it cranks the engine too slowly.  It has a pulley that's about 2 1/4" outside diameter.  The parts catalogs show different part numbers for the pulleys between a 1050 and a 1250.

 

For owners of large frame tractors with Wisconsin S12D or S14D engines, I'd like to know what is the outside diameter of your S/G pulley so I can get the right one.

 

Thanks.


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#2 captaindemo17 OFFLINE  

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Posted March 19, 2016 - 02:15 PM

roughly 2 3/4" which was off a 14hp


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#3 Eric OFFLINE  

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Posted March 19, 2016 - 03:29 PM

All the old Wisconsin I have worked on crank really slow. I usually use a battery with more CCA to make them crank slightly better. They will fire if tuned correctly and have good gas in them, good luck!

#4 framesteer OFFLINE  

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Posted March 21, 2016 - 04:29 PM

Thanks for the prompt reply.  Doesn't sound like much difference, but going from 2.25" to 2.75" is 22% faster cranking speed.


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