I have the little brother in the 6620 and I have no problem getting common wear parts from JD for it. The 6620 and 7720 share many parts such as belts and bearings. Most commonly needed wear parts are on the shelf at the various JD dealers around here. Now if you want to talk about things such as a new cylinder head for the engine then those parts are NLA just like they would be for any combine made during the late 1970's and early 1980's. Just like any older machine you can reach a point where major repairs are needed and the cost can easily exceed the value of the machine when in good condition.
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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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