The ratchet installed on the crankshaft for the missing (in the picture) recoil starter assembly is of the type for a WD4S. We do have a replacement carburetor main adjustment screw knob in stock if needed (http://fergusonpoolemarine.com/fuelsystemparts.html), and many other (Wizard WD4S) parts as well. Very cool to read that it was passed down from your grandfather.
