Owner's group for the 14, 16, 18, & 20 hp Simplicity SunStar / GTH and equivalent garden tractors branded as Agco-Allis 1918H & 1920H, Deutz-Allis (Ultima) 1914H, 1916H, 1918H & 1920H, or Massey Ferguson 2918H & 2920H (early versions) all manufactured by Simplicity from 1986 through 1997 (14 hp & 16 hp models made only in 1988). Tractors are mechanically identical, differing only in paint color and decals, and share common powertrain components such as Kohler (Magnum or Command) or B&S (Vanguard) engines, Sundstrand 15 "U" series hydrostatic transmissions, Peerless 2600 series differentials (2-spd & diff lock on 20 hp), Warner electric PTO clutches, Ross "Hydraguide" power steering (20 hp & some 18's), hydraulic lift, and dual pedal brakes (20 hp & some 18's). Two features distinguishing these tractors from most others are their: 1) free-floating, and 2) left side discharge mower decks. Message topics appropriate to this group include operation, repairs & maintenance, attachments & implements, parts needed or available, whole tractors wanted or for sale. If you are experiencing any electrical problems with your SunStar, such as the PTO not working, there are ELECTRICAL SCHEMATICS in the FILES section for you to examine and download. They are a very helpful diagnostic tool. - Dennis Anderson, "Serious Machining" SunStar Tractors Group Owner and Gerald Terpening, "glterpening" Moderator.
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