Question about Husqvarna 160 CC Honda OHC Engine 21 in

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Racing of a Honda 160 CC lawn mower engine

The engine revs up and down when running.

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When a small engine "surges" in all speed ranges the possible causes are:

*Dirty air filter

*Water or contamination in the fuel system.

*Breaks in the spark plug wire (leaking), loose or corroded terminal connections causing an intermittent failure.

*Misadjusted or malfunctioning governor.

Problems with surging only when under load or at idle are likely caused by carb blockage or misadjustment.

Hope this helped and good luck to ya!

Posted on Jul 20, 2009

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