It has a cantilever snap action. Either the spring has detached, broken, disabled or unit is otherwise damaged. Heat, water, rodent, etc damage. Replacing the unit is most likely your only option.
Question edited for clarity.
Engines only need 3 things to run
Fuel (is it fresh, carb clean, jets clear)
Compression (test with compression gauge)
A spark at the right time (remove plug, ground it, check for spark)
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Question edited for clarity.
Question moved from Cars and Trucks to Generators.
Thar sort of information is never available especially on such a vintage machine, and you don't tell 'why'?
You would measure the diameter with an internal Vernier gauge or external on the male connector and then use a thread gauge for the thread pitch.
Or you buy a new tank or a new tap.
https://www.google.com/search?q=Scorpion+sc950+generator
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Question edited for spelling of 'carburetor'Please don't type in all CAPS, it is considered SHOUTING and is harder to read.Take the carb off and clean all the jets and passageways. Something is blocked and not enriching the mixture. Basically, the choke isn't working and you are doing it manually with the carb cleaner spray.Also do basic things like cleaning and gapping the spark plug...
GFCI and overcurrent protection (breaker) work in different ways. Suffice to say the GFCI is ~2000x more sensitive and trips long before the typical household breaker. So it's normal for a GFCI trip and the panel breaker to remain closed.The electrician is correct regarding GFCI devices. One GFCI device can protect multiple downstream outlets but some homeowners want a separate reset per floor or each bathroom to have its own reset, etc.As for the hair dryer... you're trying to eliminate trip sources so just leave it unplugged between uses and you'll get your answer.Typical trip sources are the GFCI itself (defect/damage/age) or an appliance of sorts. Then there's rodent or water infiltration issues. Anything you plug into the GFCI circuit is a potential trip source even something seemingly innocuous as a nightlight or air freshener, USB charger, anything that fits into the plug.