One typical cause of a weak starting spark yet still an excellent running spark IS A WEAK MAGNETO IMPULSE SPRING or else the start timing is a tad late. It should make a loud sharp SNAP when the impulse trips NOT a faint dull clink (weak spring) and the impulse needs to trip RIGHT AT LHI TDC. If too fast she kicks back but if too slow hard to start. If you turn the flywheel the impulse must trip when the LHI is even with the flat mark at 3 o clock......... no later no sooner.
If the ignition (good spring) and timing LHI at 3 o clock with good loud sharp SNAP Id check carbs idle and adjustments. My 38 B with a Wico X Mag likes to start at slow idle on throttle and don't over choke and flood
Try a new set of the hotter deep reach side wire electrode Autolite 3077 plugs versus the 3076
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Today's Featured Article - Using Your Tractor: Creating a Seed Bed - by Chris Pratt. When I bought my first old tractor, I had only one idea in mind. It wasn't the preservation of old iron since at that time, I was unaware that people even did this. It wasn't to show off my restoration skills (though I had tried my hand at a couple of old motorcycles in my teens and if I recall correctly, those old motorcycles were sold in boxes about one quarter finished). It wasn't to relive memories of Grampa, Dad or myself out on the back 40 nursing the Farmall pulling too many b
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