New Starter Switch for IH Farmall A, B, C, Cub, Cub LoBoy, Super A and AV, Super C, H, 100, 130, 140, 200, 230 Tractors The mounting holes are 15"

The mounting holes are 15" inches apart (center of hole to center of hole)

Super  WD9

Please see last image for closeup of gear teeth

This is accomplished by simply removing and discarding the retainer plate

New Starter Switch for IH Farmall A, B, C, Cub, Cub LoBoy, Super A and AV, Super C, H, 100, 130, 140, 200, 230 Tractors The mounting holes are 15"New Engine Saddle Mount Starter Switch Button for International, McCormick Deering, and IH Farmall A, B, C, Cub, Cub LoBoy, Super A, AV, Super C, H, HV, Super H, HV, Super M, MV, Super W6, WD6, 100, 130, 140, 200, and 230 Tractors. Replaces Delco and Case IH Saddle Mount Starter Switch part numbers: 1918405, 1932131, 593292C1, 1925781. Referred to also as a Saddle Starter Switch and mounts on the starter as shown in the last photo.