Kevin--would you sell the YF?-need to replace my Rochester 7004522--Thanks Bill
Sorry, I don't think you want this oddball thing. From what I've read, this is an 'aftermarket' YF, which makes sense with the Jasper engine...they seem to be quite a bit different internally than model-specific carbs.
After a good cleaning, it's running much better now. I'll run it until I decide on a multi-carb setup, then probably keep it for a spare. I may remove it and take it down to The Carburetor Shop to see if they have any wisdom as to what it is.
-Kevin