AH!!!!!!; Just like on my Lawn Genie Flail Pick Up Mower but not with a Hilliard Clutch.
You should have no trouble finding 4 replacement steel plated rubber isolation bushings from McMaster Carr or
This snow mule is beautiful. The tire location for both wheels is fine with the tread points facing in the rear. The tread bar will sink in more for the user for more traction in loose wet snow
A little work with removing the the air cooling shrouds to clear them of any mouse bedding and poop,
replacing the starter rope and original handle with a snowblower engine starter handle with the large loop, checking the oil level in the gearbox, removing the open augers and welding the thick plate steel replacement pieces, changing the spark plug with a new one with the correct gap, going over the engine further by checking the valves, seafoam engine fogger, magneto, points, and fresh fuel it will not take long to get ready for work; just time and patience.
It would be faster to just remove the engine, remove the muffler, check for carbon buildup, check the valve reeds and then you can roll it forward and check under bottom and spend more time on the axle stubs and drive linkages to make sure they have no issues.
I am guessing hear but I believe the cutting rings were broken off at one time by an impact and the right one was never replaced by the previous owner(s).
I can just imagine how much more snow that snow mule will move/chuck/discharge with an impeller kit!!!!