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Farmall & IHC Tractors Discussion Forum

Mag/impulse question

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Author  [Modern View]

07-27-2010 18:39:38

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My BN started on the third pull of the handcrank when I finally got her together a few years back and generaly runs like a top.

But, starting last year, and with more frequency this, she will balk at starting when she's warm. I know enough not to choke her when she's warm, but even then it soesn't take much cranking on the starter motor at all to flood her if she's refuses to light right off.

So, I've taken to trying the hand crank, and what I'm NOT hearing is the impulse click as I pull her over when she's warm.

So, obviously, I'm gonna have the mag off for a looksee. Is it more apt to be a matter of cleaning things up around the impulse because it's sticking (if so, what should I be looking for?), or a matter of wear on things that will need replacement (if so what?) or is she best sent out to be rebuilt? I'd thought I'd cleaned it all up pretty thoroughly when I had the motor torn down.

All thoughts, guidance, experience welcome.

Armed with that knowledge

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Wild Bill

07-27-2010 21:14:27

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 Re: Mag/impulse question in reply to ScottyHOMEy, 07-27-2010 18:39:38  
could be gunked up, could be worn lobes on the ears. I have to weld them up and regrind them to shape sometimes.

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07-27-2010 19:07:56

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 Re: Mag/impulse question in reply to ScottyHOMEy, 07-27-2010 18:39:38  
If the impulse doesn't click, tap it with the crank! That usually is enough to get it operating.

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