How To Adjust The Lawn Mower Carburetor
How to Adjust the Lawn Mower Carburetor. In most lawn mower internal combustion engines, the carburetor prepares the potent mix of air and fuel in the proportions best suited for the controlled explosion that takes place to drive the pistons downward and force the engine to turn. If there isn't enough fuel in the mix, the engine "runs lean," with not enough explosion to drive the pistons properly. When the engine "runs rich," too much fuel causes smoky operation, sputtering and flooding. Carburetors need periodic cleaning and adjustment to prevent and correct problems.
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