Posted by Binderson on August 24, 2020 at 19:04:24 from (68.66.66.254):
Thank you in advance for your help with this. My dad fully restored this tractor and he has passed a few months ago so some of this I am trying to learn to make sure the family tractors keep running as smooth as they always have. The 1937 Farmall F20 is not starting and I am not sure what all I can check to see what is going on. This tractor has always started on 2 or 3 cranks and now it's not starting at all. It was outside when it did a small rain one day but the magneto was covered.
1. I cleaned the spark plugs. They didn't appear damaged but they were black. When I am cranking the tractor fuel will drip out the weeping hole of the carburetor. If I turn the choke on and I crank it the fuel will shoot out of the weeping hole. I am not sure how normal it is to have it shoot out the way it did in a fast stream.
I do plan to check to see if there is spark by undoing one of the spark plugs and putting it near the motor to see if it does a hot spark. If it does not does that mean the magneto is messed up? If so, what are the next steps in diagnosing the magneto so it's fixed?
If the tractor does a hot spark but it's not turning the engine over I'd assume the next step would be to replace the spark plugs. Would there be anything else that could be causing this?
I am guessing it's something electrical because the tractor never turns over but I do hear the click sound that comes from the magneto when you're cranking the tractor. I believe it's the sound you want to make sure it's doing to ensure it's a safer crank to where it won't kick back on you.
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