Posted 7/11/2017 22:48 (#6120202 - in reply to #6117330) Subject: RE: New Deere 4640 screens
Leesburg, Ohio
Not true.
I think they are saying it is not compatible with a standard 20 series, because most came from the factory without autotrac epuipment.
Ours has had the integrated autotrac equipment added, same as the 30 series.
Since they clearly state that the 4640 is recommended for any non-deere competitive tractor, I am sure it will run in a 20 series deere.