Small Engines (Lawn Mowers, etc.): carberator parts, model type, serial number

Question
Is there a spring that goes on the engine gas control if so could you send me a picture of the carb set up with all the settings and spring set up

Answer
Different models have different set-ups.  What engine do you have?  What is the model, type and code number or the model, spec and serial number?  Which manufacture brand of carb is on the engine?

I need some more information to answer your question.
Eric