|Sean in PA said: (quoted from post at 20:32:59 11/24/13) Glen83 - The best thing you can do to store your 3000 for the winter if you only have 10% ethanol available is to start the tractor and then close the fuel shut-off valve and let the engine run until it dies. Don't forget to turn the key off afterward so yo don't drain the battery. Then top the fuel tank off as full as you can get it. That will minimize the amount of water vapor in the air at the top of the tank can be absorbed into the fuel by the ethanol, plus it will empty the carburetor bowl as much as possible as well to help avoid issues that can be caused by fuel left in the carb evaporating and leaving varnish or other contaminates behind.|
In addition to Sean's good advice,
any gas tractor that has a carb bowl drain should have the plug replaced with a draincock.
Moisture in fuel has always been a problem with tractors, condensation, etc.
as Sean said, run it dry, or open the drain and drain the carb after shutdown. (helps, if in closed shop, and don't want to get gassed)
also, good practice to open the drain a few seconds when you turn the gas on before starting. flushes out condensation and that red mist that gets by the screens.
Edit for the original poster...I wouldn't worry about it at all.
old tractor engines are pretty amazing on what they will run on,
as long as it's clean. Some of my tractors are my old fuel disposal system....old gas, mix, etc, strain it, mix with some fresh and dump it in. runs fine.
as far as alcohol, up here in the frozen North we've added some kind of alcohol to our cars (dry-gas) forever This post was edited by NoNewParts at 06:39:52 12/17/13.