Howdy, new guy, new to tractors. I bought my retirement property,it had a dozen or so old tractors. They have to have say 30 years or more. I decided to try to put one back in service, it's a 39 B, hand cranked, mag fired,no electrics anywhere, with a factory sickle bar attachment.
Motor was of course set up, I got it to turn and it turns pretty free. Got some compression, Cleaned and rinsed the tank, cleaned out the sediment bowl and cleaned out the carb, new needle and seat.
The mag is giving me problems. Fairbanks Morse J. I sent it to a guy who said he could test it, recharge the magnets and do whatever. Unfortunately the box came apart in the mail and the mag is gone. He sent me a used later model mag, an X? model. I got one or two backfires out of it before I lost spark in that one.
I opened it up, the points look like garbage. They don't line up straight, and don't appear to close all the way, like the contacts aren't flat. I also found the screw that holds the contact strip to the coil bottomed out but not securing the strip. I put a washer on and got that right, but spark is very weak.
Also, the rotor does not point to #1, like the old J model did. I suspect it's off a tooth although I haven't checked the marks yet.
So can anyone tell me if the later mag is a viable option for this motor? If so I'll try a new set of points. If not there is another J mag in the yard that also won't fire...
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