Bilge pump or Bail-O-Matic was a Scott Atwater feature.So your Wizard was
made during 1958 to 1964 when Scott supplied Western Auto.During this time MacCullloch purchased Scott Atwater and name evolved thru Scott to MacCulloch. MacCulloch became a Sears supplier of various powered products...chain saws, outboards ect under Sears brands.
Louis