Contact www.advanced-power-technologies (Cummins Dealer) with exact model and spec number. Also there are cold weather options, and cold weather models. Many people buy the RS units of the net, only to find they have been stuck with warm weather models, and they don't start. Does it show a code, or a code 45.
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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