This machine is destined for my brother. Its piston seized during the first 15 seconds engine running at mid-RPM because the oil sump was empty! I poured some Marvel Mystery Oil into the spark plug hole, filled the sump with oil and got the engine re-started. It seems to be OK.
Today, I rigged a temporary fuel tank, cleaned and adjusted carb for low/high speed operation. Electric start, auger and tractor drive all function. Skid shoes are good (need height adjustment).
A belt cover, carb heater box and fuel tank will be sourced from my parts snowblower.
Tractor drive servicing and auger gear box/shaft greasing needs to be done tomorrow.
PS The Toro is on the back burner because I'd rather work on all these Ariens "orphans" that keep following me home.

The Toro's B&S Flo-Jet carburetor needs disassembling. I'm dreading removing its emulsion tube without stripping its screwdriver slot.