Toro 20333 misfires when blade disengaged

zarichJune 21, 2010

I have a new toro 20333. When I release the blade lever the mower idles and makes a popping noise repeatedly and shakes a bit (though not hard). I took it to the local service guy and he thought it might be normal for this mower because they use a very small fly wheel. When the blade is engaged it runs great. However, the misfiring when idling seems wrong to me. Can any give me advice?

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Snowblower engines do the same. If it works well under a load, that's all I would worry about.

    Bookmark   June 21, 2010 at 9:23PM
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I have the Toro 20334, which I believe is the 2010 model - 20333 was 2009. Mine runs smooth, free of back-firing at any time.

Regards, Richard

    Bookmark   June 25, 2010 at 1:22PM
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20334 does not allow you to stop the blade without stopping the engine only the 20333 does this.

    Bookmark   June 25, 2010 at 7:22PM
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