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Mend Briggs & Stratton Quattro 4 Lawn Mower Carburetor Engine

briggs and stratton quattro 4 hp. rpm problem?

Recently replaced the carb and diaphram.....started it up on first pull...but rpm is so high it sounds like its gonna blow up ??want to know how to adjust the running speed ?? Thanks !

jay
July 2012

Briggs & Stratton Briggs & Stratton Quattro 4 Garden Tools, Lawn Mowers Lawn Mower Carburetor Engine

Most likely when you re-assembled the tank assy back on to the engine, the governor mechanism got jammed, or the spring is twisted/trapped somewhere.

You only have to remove the air filter to see and chack for free movement.

On some carbs, there is enough free movement in the throttle butterfly for it to go 'over-centre' when re-assembling, resulting in the throttle jamming wide open. Check for this.

phil_saunders(a)bigfoot.com

Phil Saunders
September 2012

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