My 504 had sat for several years. What I did to get it home.
Pulled all spark plugs and squirted oil in each cylinder, then turned the motor over by hand.
Do you have a hand crank for the Super M ?
Cleaned and set spark plugs and points.
Cleaned inside of dist cap and rotor and made sure plug wires were snug on cap and plugs.
Pulled the drain plug on the carb and squirted carb cleaner through the drain and then through the fuel line.
If your tank is nasty find a small lawn mower tank just to get clean fuel to the carb. I use one off a old Snapper rear engine rider.
Clean your battery cables, both cables, both ends.
Check oil and anti freeze levels.
Air up tires.
Bring another battery with you or a jump box. Watch for oil pressure if it starts.
On hauling the Super M, measure outside to outside of rear wheels and then how much axle is between the wheel and frame. Depending upon tire width and trailer size you may just have to slide them all the way in or possibly just flip one center inward. My Super M has 12.4's your look wider. The picture of my Super M is with 11.2's, I have since put on 12.4's. Thought I had a newer picture.
View attachment 152799View attachment 152800