The best is MEK. It is VERY strong and it WILL take your paint off in a Flash! I am going through this very problem right now with my CUB. Guy let it sit in a shed with 1/2 tank of gas. I am going to rebuild the carb tomorrow. The tank is a real mess and this is how I am doing it. The "chunks" of crap in the tank I used one of those extension little claw things you can get at HF. First drain all of the old stinky stuff out and then shut off the fuel valve on your tank. Now pour a gallon of MEK, about $18.oo, in the tank. What I do is stir it every so often with a wood paddle so as to keep it working. Keep the cap on and tractor in the shade. Give it a few days. Again be very careful when you handle this stuff cause it will remove paint in a flash! If things were really bad you may need to buy another gallon and redo but I bet it will do it the first time. P.S. The gas came out of mine about the color of DARK honey and flowed like 30wt oil!
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Today's Featured Article - 12-Volt Conversions for 4-Cylinder Ford 2000 & 4000 Tractors - by Tommy Duvall. After two summers of having to park my old 1964 model 4000 gas 4 cyl. on a hill just in case the 6 volt system, for whatever reason, would not crank her, I decided to try the 12 volt conversion. After some research of convert or not, I decided to go ahead, the main reason being that this tractor was a working tractor, not a show tractor (yet). I did keep everything I replaced for the day I do want to restore her to showroom condition.
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1964 I-H 140 tractor with cultivators and sidedresser. Starts and runs good. Asking 2650. CALL RON AT 502-319-1952
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