I knew about the gas cap issue, but never gave it much thought to be honest. Thanks for the info, I'll look into that.
Here are a few SM pics.
Day one when I brought it home. It was worn out in a big way. The compression was so weak I'm surprised it started. Funny thing is notice the new SUPER M emblem on the side of the hood. The guy I bought it from stuck 2 new ones on. Kind of like throwing new wipers on a busted windshield.
The tractor was completely disassembled. I mean ever nut & bolt sheet metal etc. etc. was either media blasted, wire wheeled hot tanked or replaced. The engine was completely overhauled. Sad thing is the head is junk. It was supposedly "professionally" repaired only to leak upon our madden start-up. It was filling No. #4 cylinder right up with coolant(water, I never use anti-freeze until I know it's good to go). Buddy of mine bought it and helped in the final stages. He recently purchased another head that he completely rebuilt, magna-fluxed and pressure tested. Anyhow he performed the final paint job and threw on the decals.
Me on it
My bud driving it at our annual Muscle Car Cruise. Believe it or not, it was a big hit with those gear heads

He must have had 25+ kids trying to get their picture taking on it.
This time around I wanted one that was a turn key restoration. I found it. I'm taking a break from my resto passions. Maybe next time I'll look for a project JD 60 or 70 series. Always wanted to tear into one of those