The solenoid plug is strait, so it pulls off in the direction the wires go in.
he plastic shrinks with age & heat and the pins corrode with age & water so if it has not been off for a long while it might put up a fight, Just do not pull the wires.
Best thing for the carb is an ultrasonic cleaner.
Other than that any dipping solution will work , just read & follow the instructins as some require all non metalics to be removed before you dip them.
When you take the bits out pop them into boiling water to rinse off, leave them in there for a few minutes till they ar hot so when you lift them out they will dry off very quickly.
Spray clean dry parts with your favourite WD 40 type of goo then assemble when you are ready in a clean dust free place ( sent you wife to the movies, she will never know you used the kitchen bench )
From my unreliable memory, one side of the choke lever has a Z bend snd the other a 90 deg and plastic retainer, if so pop that side out first.
Bending the wire is not a problem, you can always bend it back.
Snaping off a plastic lever is a problem & requires a full ( expensive ) carb rebuild.