Starter Fits Most Jinma FarmPro 2420 Nortrac AgKing Tractors 2 cyl. 18hpOne New Aftermarket Replacement Starter for Jinma, FarmPro, Nortrac, and AgKing Compact Tractors This 12 volt direct drive starter is a direct replacement for the QD100C3 style starter motor used on a wide range of Chinese built compact diesel tractors sold under the Jinma, FarmPro (Farm Pro), Nortrac, and AgKing (Ag King) brand names. It mounts to the engine's starter pad via a 4. 5 inch center to center bolt pattern and engages the ring gear through