Start with checking the basics. First remove the spark plug and checking for spark. Then check to make sure it is getting fuel. I am going to assume that it isn't getting spark and that is caused by a loose wire. Look to make sure the kill switch wire is hooked up and not shorting out the mower
cholbach, October 2005
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I can answer this question...
Why will not my lawnmover stopped during mowing not start back ?