Do you have a 12 volt test light that you can use to see if you have power to the coil? Which battery post' + or - is grounded to the tractor frame? Do you have the ability to connect a 'jumper' wire( with alligator clips) from the hot battery post to the battery side of the coil? If so that will bypass your 'kill switch', then spin it over with the coil wire out of the dist. cap and 1/8 to 1/4" from the tractor frame. Do you see a spark?
Take the distributor cap off and drag a business card or some brown paper through the points when they are closed to remove some oxidation. Be aware of the order of the spark plug wires in the distributor cap, they have to be in a certain order. When you get the dist. cap off there is a 'rotor button' that will pull off and a protective cap under it that covers the points and condenser, it pulls off easily. Know that your test light will only show power to the coil when the points are open.
Try to be methodical and logical. Study John T's guide and identify all components before you start, to the extent possible. We have a Super A and it has a battery/coil ignition
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Today's Featured Article - Massey Ferguson 35 (and up) Tractor Assembly Notes - by Jack Wetmore. These assembly notes are for Massey Ferguson tractors with a two stage clutch and 6 speed, 8 speed and mutli-power transmissions. I see a lot of discussion forum messages regarding damaged clutches from improper assembly. The objective is to have the engine and transmission slide together safely and easily until the gap between the two halves is less than 1/4", BEFORE tightening any of the bolts holding the two together. Using bolts to draw the two halves together will damage the PTO
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