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Anonymous Posted on Feb 25, 2015

Toro 621 back firing

Previous owner ran 1 tank of mixed gas in it, I dumped out old and put in good regular gas and it still back fires.

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J.D. Browning

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  • Toro Master 2,760 Answers
  • Posted on Feb 26, 2015
J.D. Browning
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If oil/gas mix is run thru a four cycle engine , id suspect the plug is fouled with oil , this may require replacement once your sure all the oil is out of machine completly

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