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Oliver Row Crop 66

Bill Hume
Oliver Row Crop 66

I have an old row Crop 66. It was made in Charles City, Iowa. It has a serial number of 420471. This information is on a plate on the brake side of the tractor right under the floor board. It is the only I.D. tag that I can find on it. Does anyone out there know what year this tractor might be ? One of the old farmers in my area said that this tractor could be a 6 volt. When I got it, it had a 12 volt in it. Is it negative or a positive ground system ? Thanks alot if you can help me...

oliver fan Your tractor was built in 1949. Originally it had a 6 volt positive ground electrical system.
Stan General rule: if Oliver has generator, it is positive ground


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