You may have clogged jet in the carb, or in the small fuel filter. Check everything from the tank down to carb, and if necessary take carb apart.
check you tube under removing the govenor on a Briggs and stratton
Timing is off ...
The Briggs and Stratton part number 691656 is commonly cross-referenced with part number 798452. This part is typically a replacement for the fuel shut-off valve used in various Briggs and Stratton engines. Always verify compatibility with your specific engine model before purchasing.
use a wheel puller
The way to drain gasoline from a Briggs and Stratton lawn mower is to take the oil cap off and drain the oil. From there, run a rubber hose into the drain and siphon the rest of the oil and gas out.
There are two bolts holding it on to the block. You may have to remove some shrouds to get to it.
check your wiring harnes to your starter. make sure it is not connected backwards
You need to have a pulling tool like a steering wheel puller or a t-type puller.
To remove the choke knob on a Briggs and Stratton engine, first, ensure the engine is off and cool. Locate the choke knob, which is typically attached to a lever or rod. Depending on the model, you may need to unscrew a retaining nut or simply pull the knob off if it's designed to slide off. Be cautious not to damage any connected components during the removal process.
Both marks must FACE each other and cannot be off by even one tooth.
If it's compatible just take one off and put the other in it's place.
With the engine off for at least 15 minutes, remove the dipstick and look to see if the oil is at the full mark.