These images are of the carb prior to cleaning. That riser tube is red because it is coated with varnish. I wonder how much of the rest of the carb is in this condition. The tank is horrid with the stuff too but that is another post.
The carb has no fuel pump and only has 2 screws holding it to the fuel tank.
The only part I plan to remove for cleaning is the main jet needle valve assembly.
When I pulled it from the cleaner the first time the bit of tin in the carb to swirl the air fell out. Where is it ?
Thinking about removing and soda blasting the rusted bits. Maybe repainting them.
It is always surprising how much dirt comes off a carb.
When cleaning like this always check the bottom of the cleaner when draining it for any parts that may have fallen off.
Next we change out the water for fresh with just dawn dish soap.
A little silicone on the slide and a touch on the rod where it moves through the hole has it moving well. Even snaps shut most of the time. Still not quite there. I expect it will come off from gas vapors.
Prior to removal of engine.
Fig. 68 - Choke-A-Matic Linkage"
I do not see any good reason to remove the muffler if it don't want to come. But I will move the lock nut to the far end and maybe after it runs a while it will come loose and I will reinstall it with anti seize.
The fuel tank is the next thing to look at and it is the worst one yet.