I had the same problem a few years ago. Took me several weeks and some new words to figure out what was causing this. The mag drive gear or timing gear was moving toward the front of the tractor letting the mag lags slip out of the slot in the timing gear. The only thing that keeps the gear from moving away from the mag is a thrust spring and thrust pin. To get at them you need to remove the governor housing. You can do this without removing the radiator but it takes a little time and patients. Once that is removed you will see the shaft that is connected to timing gear. It has a thrust bearing and thrust sleeve riding on it. The shaft is hollow and it has a spring and pin in the end. That spring is either bad or needs to be stretched a little to hold that timing gear into and toward the mag. Hope this helps.
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Today's Featured Article - The Nuts and Bolts of Fasteners - Part 2 - by Curtis Von Fange. In our previous article we discussed capscrews, bolts, and nuts along with their relative hardness and thread sizes. In this segment we will finish up on our fasteners and then work with ways to keep them from loosening up in the field. Capscrews, bolts and nuts are not the only means of holding two parts together. When dealing with thinner metals like sheet tin, a long bolt and
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