Question about Briggs & Stratton Briggs Stratton 6200 Watt Portable Generator

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My generator starts and runs great for a while then suddenly the rpms will drop or will race very high causing extreme flucuations in the power level produced

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Take a close look at the governor and its associated springs. There should not be any play in the governor arm, springs should be taught when engine is off.

The governor spool may also be binding, but much harder to check since it is internal to the engine.

Start the generator, and watch the governor arm. When RPMs drop, you should see the arm move in an effort to open the throttle. Conversely, when the engine races, you should see the arm move in the opposite direction to try and close the throttle. Small movements of the governor are normal with a steady load. If you don't see the governor trying to correct engine speed, you likely just identified the culprit.

Posted on Jun 12, 2010

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