In need of a carb for a OS 46sf. It has a 4D on it now. If anyone knows where I might get a used one I would appreciate it. You can email me [email protected]. Or, it there is another carb that will work that would be OK too.

Hi!
You can use any carb with a 13mm neck diameter and intake diameter around 7,5mm-8mm.

http://www.perrypumps.com/prod01.htm#os
Try their carb P/N 1300S as per their page.