[Dr. Jerryrigger]

An 11WC regulator is not hard to find. That's the pressure 90% or propane applications use, so it's just a matter of finding a big enough one. Unfortunately there really are not many application that use bigger ones than the standard "grill size".
Are your positive that the regulator is the problem? That is an rather small engine, and grill regs can put out quite a lot of gas. Does it seem to be getting some gas, and if so is it burning it?

I have a hard time believing that you can't get enough flow out of one of those tanks... Sounds like something a sales person would say... But that said, I think the best tank for you would be one made for forklifts, they come in (if I remember correctly) 33lb and 40lb sizes, and are made to be use horizontally. But they are really pricey in comparison to the grill ones.


I have an old LP solenoid I was going to offer for an unbeatable price, but then I realized; it runs on 120VAC, so you could only turn it on when the generator was already on... not so useful... (I don't know if it's big enough anyway)

Why do you need the valve anyway? You could just keep the LP tank valve off unless you know you'll want to use it. If you find that to be a pita you could always add on in later... or does the carb just leak propane when it's not running and has pressure?

edit: If you don't know; the proper way to open a propane tank for any purpose is to give it just a 1/4 of a turn. This way it can be shut off with just one turn of your wrist if something goes wrong (and you can get to the tank).