Filled the bowl with B12 and left it overnight. That stuff is HUNGRY! It ate most of the gunk off. Brass brush and 5 ought steel woo did the rest. B 12 will eat nitrile gloves, the color off screw driver handles, and skin. Cleaned out the jets put it back on the engine and IT RAN!
Polaris 300 xpress that hadn't run in at least 8 years and probably more. We drove it around the farm. Total cash utlay was $10 for a new ignition switch and another $15 or so for chemicals.