I have a briggs & stratton engine similar to whats on lawn mower 12HP and just adjusted the governor screw to get rpm back down..was off and surged) It is running smooth but is a tad low on rpm.If i place more pressure on the spring(with slight bend at end) the throttle will open further and seems to run smoothly strong..Is this ok to do taking that i tried to turn gov screw just a hair and it surged.Throttle is open when off also.There is NO carb adjustment screw on this engine(!2h802-2635).and only 1 hole(not multiple) for gov spring at throttle.
SOURCE: adjusting governor/throttle briggs and stratton
there should be a little screw to help adjust your idle try that..counterclockwise to add more idle, clockwise to slow idle..
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again..this engine has NO adjustment screw for throttle..is for pressure washer
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