Briggs 17.5 opposed twin will not restart when hot 42A707

troy-built

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  • / Briggs 17.5 opposed twin will not restart when hot 42A707
These coils are very sensitive to both the spark plug and the plug gap .
What plugs are you using ?
I don't have the number in front of me but I know it's a champion plug. I will look tomorrow. I will say one thing I regaped the plugs today after reading over the manual, they were to wide and it seemed to run better.
 

Scrubcadet10

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  • / Briggs 17.5 opposed twin will not restart when hot 42A707
Probably won't matter, if you get/order the 394891, most likely you will receive the 590781.
 

troy-built

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  • / Briggs 17.5 opposed twin will not restart when hot 42A707
Probably won't matter, if you get/order the 394891, most likely you will receive the 590781.
I have found a few NOS 394891 in the original B&S boxes. The new style 590781s are a good bit cheaper and seem to be all made in china. That's where the bad one I have now that I bought was made. Most of the time you get what you pay for I guess.

Thanks again for your help.
 

matt man

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  • / Briggs 17.5 opposed twin will not restart when hot 42A707
I have same. This is the second ignition coil that I have put on it.
 

troy-built

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  • / Briggs 17.5 opposed twin will not restart when hot 42A707
I have same. This is the second ignition coil that I have put on it.
I hope this next one last as long as the first one did. LOL
 
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