The sticking portion could be the outside lever assemblies or the mixture control jet inside the carburetor. I have poured penetrating oil on the lever assembly, but that hasn't loosened it up--at least not yet.
Q1: Is the sticking likely to be the outer lever assembly, or the jet inside the carburetor?
Q2: If the problem is inside the carburetor, can I get to it from the top or bottom with the carburetor still on the engine, or do I need to remove the carburetor to fix it?
Photo of linkage is below. The center lever with a tab is the one that is moved upward when the choke control on the dash is moved upward. The lever that is above and to the right of it (with the mixture adjustment screw) is the one that seems to be frozen. (Photo is of center carb, but stuck mechanism is actually on the front carb.)
Any guidance and advice would be much appreciated.
Thanks,
Bill
