For what it's worth, here are some pics of the shaft diameter on my 6V starter. Supposedly the 12V has a larger shaft where the gear rides. It would be an easy way to check to see whether your found starter armature is 6 or 12V. Although the spiral splines vs straight splines on the 6V starter should be a dead giveaway. [on edit] those spiral splines may be for a solenoid operated starter, not a stomp starter.
Last edited by klhansen; 09/06/20237:22 PM.
Kevin 1951 Chevy 3100 work truck Follow this saga in Project Journal Photos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together.