Thanks Jack, That is what I thought. Yes, the side pull starters are the only ones that required a different cowl design. I think one time I used a horizontal shaft cowl on a vertical shaft cowl, I had to drill a tiny hole in the side of the cowl to mount an oil dipper, but that was about the only difference. I can only think BB must mean "horizontal pull" as opposed to "vertical pull". The vertical "side pull" starter required the addition of a cog on the bottom of the flywheels. Earlier flywheels did not have this "cog" on the underside. The side pull starters are still fairly easy to obtain, but this may not be the case in future. I have a large box full of them.
