Can you see in the tank well enough to see if there is any rust in there? That's ther other thing that happens to old engines...
I suspect you are going to end up taking the carb off and giving it a cleaning. Yoiu will probably need a new tank gasket to do that tho, last time i tiook one of those off I had to beat it sensless to get it to let go...
Youu could try an oz of dry gas or fuel stabilizer, just in case it's goo, but I doubt it will fix anything, it never has for me, it always ends up being varnish or bits of rust stuck in the jet.
>main Jet, orfice, or what ever you want to call
Yes, it has only the part that in an automotive carb would be for high speed...
Most don't even have any metering adjustment, idle is set via a throttle stop screw.
There isn't a lot you can muck up with them, which is nice, but they don't work well in cold weather, which is why you don't see them on snowblowers, and they are kinda inefficient for large engines, they need a restricted airflow to make high velocity air to operate the venturi, which reduces the hp available from the engine rather a lot.
