Question about Briggs & Stratton Briggs Stratton Vanguard V - Twin Vertical Ohv Engine with Electric Start 23 Hp, 1" X 3 5/32" Shaft, ModelNo. 386777 - 0036 - E1

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My lawn mower keeps fouling plugs

Black soot on plugs and coming out of exhaust

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  • Master
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Your choke is stuck

Posted on Nov 18, 2017

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SOURCE: I have no rpm's mower only runs slow. plugs foul

CARB NEEDS TO BE REBUILT. FLOAT IS STUCK.. AND CHANGE OIL AFTER REPAIR OIL WILL HAVE GAS IN IT AND IT WILL JUNK THE MOTOR IN NO TIME ... VOTE !

Posted on May 20, 2010

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SOURCE: oil appearing at exhaust, smokey, briggs and stratton lawm mower.

You will need to replace or clean the air filter, and probably the spark plug. Do not operate the mower for some hours to allow the oil drain (inside the engine). Check oil level and fill it if necessary. Some oil remaining in the exhaust should be burnt next time the lawnmower operates.You will see smoke at the beginning, that will be normal (burnt oil). Hope this helps!

Posted on May 25, 2010

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