The solenoid is prone to corrosion. Happened on mine and it worked for
a while after cleaning, but I ended up having the thing replaced.

Don M

Choke is not actuating, didn't notice it in the summer, but now that winter
has arrived I have to manually actuate it to start generator.<<<<<<<

I had/have the same problem.
Neon John suggested I push the start button for a half second and release
it.
This activates the primer.
You can hear it clicking.
Do this 2-3 times and then try starting the engine.

The main problem I have seen with them is the solenoid - the plunger
corrodes and sticks. Try moving the solenoid plunger by hand - if it won't
move at all, or won't move far enough to fully close the choke, it's a
pretty fair guess that you've found the problem. You can take it apart and
clean, but it will most likely happen again later. I've gone to just
replacing them - yeah, the replacement eventually will corrode, too, but at
least you have a while before that happens.

Alan

My solenoid seems to work, but closes the choke after about a second of
running shutting the engine  off.  If manually held open, the engine runs
indefinitely.  I think that my controller is shot.