Small Engines (Lawn Mowers, etc.): Push Mower Running Speed, engine model type, briggs and stratton

Question
My Murry push mower starts fine, but it will only run at idle speed. I can make it run faster by working the linkage on the carb. but when I release the linkage it goes back to idle and misses every once in a while. I changed the plug,  gas, air filter and cleaned the carb. bowl. It is a float-bowl carb. Murry 22" Model 225111x92B. Briggs and Stratton engine. Thanks for any help.


Answer
Does the mower have a throttle speed control on the upper handle?  Is the governor spring conntected?  I would not worry about the engine miss.

What engine is on the mower?  What is the engine model, type and code number?
Let me know about the throttle cable and governor spring.
Eric