SOURCE: what is the valve clearance on a briggs &
.003-.005 intake, .005-.007 exhaust for single cylinder OHV
SOURCE: briggs and stratton engine smoking
if your oil level is to high it will do this. i would drain and refill the oil to oem specs slowly as not to overfill so it doesn't blow over the top of the piston.hope this helps
SOURCE: as soon as my 10 hp Briggs & stratton engine
The engine speed is controlled by a governor and throttle position. There is a spring that holds the throttle (butterfly valve) against the slower position. When the motor is under load' the governor exerts force to open the throttle position. Make sure that all of the components are clean and not binding. Look for a broken or disconnected spring. It is also possible that the governor is stuck in the demand full throttle position.
SOURCE: Walbro Carburetor on Briggs & Stratton Model 28R707
If the float don't float, the needle valve stays open and gas runs into crankcase.
If float floats (has no gas inside) then the needlel is probably worn and needs replacement.
SOURCE: I blew the 24 HP ELS 725 Briggs & Stratton
http://www.smallenginewarehouse.com/
this site may help
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