The easy 1. The affordable 1. The versatile 1. See how 1 Series Sub-Compact Utility Tractors are the perfect 1 for you. There are two models in the 1 Series lineup. The John Deere 1023E and the John Deere 1025R are both capable of having a loader, mower, backhoe and so much more. The John Deere 1 Series tractors utilize the use of the John Deere AutoConnect mower deck. Available in both, 54 and 60 inch. The AutoConnect mower deck is very easy to drive right over.