Originally Posted by
pbryant
Be sure to disconnect the fuel tank line from the engine at the end of the day and allow the engine to run until the bowl is emptied and the engines stops from fuel starvation. The owner's manual actually recommends this. The procedure accomplishes two things: it allows the engine some cool-down time to reduce thermal shock and -- more importantly, it empties the carb bowl so the fuel doesn't evaporate in the bowl every time you run the engine and eventually develop a residue.
100 "low lead" ("100LL") av gas should really be called: 100 lots of lead. It has more lead than leaded car gas once had. It will foul your plug. Yes, 10% ethanol gas will absorb water, but I doubt the water content is causing the fouling.