[AT] question on use of resistor on coil

[Kevin Mosier]

Try a 6 v coil, or one off a farmall that came out with 6v system.
----- Original Message ----- 
From: "Cecil E Monson" <cmonson at hvc.rr.com>
To: "Antique tractor email discussion group" <at at lists.antique-tractor.com>
Sent: Saturday, October 23, 2004 6:18 AM
Subject: [AT] question on use of resistor on coil


> I've been trying to get my JD 420 crawler to start after sitting
> all summer. At first I had no spark. With the loader down and the hood
> on the tractor, it is almost impossible to get to the coil and to where
> you can see to work on the distributor. I took the hydraulic connections
> apart yesterday and got the hood off. Substituted a new coil for the old
> one without success. Took the cap and rotor off the distributor and used
> a "point file" I got at Sears to clean up the points. Now I have a sort
> of yellow spark when I lay a spark plug where it is grounded and crank
> the engine over. The yellow spark indicates to me it is a weak spark
> or still bad contacts at the points.
>
> The question is - the coil came out of the box with a note saying
> it must be used with a resistor but no resistor is there. I figured that
> being as it is marked 12 volts on the coil and I'm using it on a 6 volt
> system, I should not need a resistor. Is this true or do both 6 volt and
> 12 volt systems use the same coil with a resistor?
>
> Another question is that I can feel pitting on the points on one
> side when I run the file over them. Would you just change out the points
on
> general principals?  I have already changed out the condenser as I
initially
> thought it might be the problem.
>
> In case someone wonders about fuel, I smell gas in the exhaust when
> cranking so it is getting gas.
>
> Cecil
> -- 
> The nicest thing about telling the truth is you never have to wonder
> what you said.
>
> Cecil E Monson
> Lucille Hand-Monson
> Mountainville, New York   Just a little east of the North Pole
>
> Allis Chalmers tractors and equipment
>
> Free advice
>
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