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Farmall & IHC Tractors Discussion Board

Farmall A Magneto No Spark (Ideas Please?)


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Posted by dunniteowl on March 16, 2008 at 10:52:18 from (4.230.129.242):

This is really wierd to me. Back in October, my shredder finally lost it's composure (the box is wearing out) and the height won't stay as the box sags. So, the blades dug into the dirt and there goes my PTO shear pin again.

I drive my '44 Farmall "A" (her name is Betty) back to the house, disconnect the shredder and see what I can do. Answer -- get another shredder.

Since then, I have only driven the tractor once around the end of November to attempt to pull a fallen tree out of the road in front of my property. Defeated, I drove her back to the house and there she sat until now.

So I find another drag along drawbar shredder, I get it home and I know I gotta replace the PTO shear pin. I also know by now, the battery's prolly dead. I hook up the charger, 'cause I just would like to move her to a better spot to do my PTO work.

She charges up and so I crank. Nothing doing, man. She cranks fine, I smell gas after a bit. Flooded. And so it goes. I remove and clean the plugs, I crank with mag grounded and gas shut off to get fuel out. I recharge the battery.

Rinse and repeat, trying a little something different each time. So today, I am out there and I think, maybe no spark? So I pull the distributor coil wire off the H-4 cap, so I should have the spark directly from the magneto and I check it against the governor linkage (where I should get a nice blue spark.) Nope.

I think, you know, there's a lot of corrosion and the wires are old. So I replace the kill switch wiring (which shouldn't be the problem as it's "ground to kill, open to run") and I clean the battery cable and the starter connection, the mag wire connection. Still nothing.

So now I've pulled the mag off the chassis, wire wheeled the chassis and mag metal connections (for a good chassis ground) and still nothing.

I come here, and I read through the past 4 months or so of posts and nothing comes that's close to what's going on. Does anyone have some friendly and sage advice (beyond resetting the timing, which I am already going to do?)

My question is this: If she was running right before and the only thing that changed was 3 months of not being run, how could the timing go out? Why won't I get spark to the Magneto? What am I missing here?

Any assistance would be deeply appreciated


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