I have no problem starting the engine or running it at 3/4 choke, but when I move the choke lever to the run position it immediately stalls out. This machine is in new condition but has not been run in a long time. If it is bad gas why would it stay running in the 3/4 choke position? Please help.
Let the engine warm up for a couple of minutes and see if it will run with the choke off. I have a couple of small engines which crank well and won't run cold but do OK after I let them warm up a bit.
Normally I would say you have a carb problem with gas not getting from the carb bowl, into the jet and into the engine.
Your engine being new it could still be a problem.
All the air coming into an engine is supposed to come thru the carb. If you have air leaking in from somewhere else then to get the air/fuel correct enough to run you are having to close the choke.
Check for leaks by cranking the engine and doing a quick spray of carb cleaner all around the mounting areas but not near the air intake.
If there is an air leak the engine will respond by changing rpm.
If you don't find an air leak, it's the carb.
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ajust the float in your carb (bend the brass tab in that the top of the needle valve touches)and clean this needle valve. the bowl can be removed with a 7/16 box wrench on the bottom brass nut that is also a needle jet (clean this jet ,some models it is just a jet, others it is ajustable and needs to be 1 turn out to start then ajust wile running hot untill it stops surging) the problem is not allowing enough fuel to fill the float bowl
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