What are the consequences of running an engine spec'd for 24:1 on a 50:1 mix? I'm sure it has been done plenty of times, but I've generally tried to follow the manufacturer's recommendations, so don't recall knowingly using a different mix in anything. I have an old Troybilt mini tiller that I won in a raffle or something back in 1995, only used it a few times, and it has sat for years, but still looks new, so I figured I would fix it up and sell it or give it to someone if I can get it running again. So I have disassembled, cleaned, and reassembled the carburetor, cleaned the tank, etc., but it's intended for 24:1 mix and all of my blowers, trimmers, etc. are 50:1, so I'm not crazy about having to mix a gallons of fuel just to check this out and show it to someone when I have two cycle fuel ready to go.