Ryan Martin The John Deere 1025R Runs a Yanmar Engine. So Why Not Buy the Yanmar? Most tractor people know the engine in John Deere's compacts is a Yanmar — Deere's own spec sheets for the 1025R, the 1R 25, and the 2025R all list the Yanmar 3TNV80F-NCJT, from the same engine family... Compact Tractors John Deere Yanmar Yanmar Equipment Yanmar Tractors Aug 19, 2026