Mower surging issues with Choke off

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Apr 13, 2012
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So about two years ago my dad bought a brand new mower (MTD I think). Ever since he had it, it always seemed to surge. It seems to stop surging when the choke is engaged, but when you turn it off, it starts surging.

I don't think it's a dirty carb or anything since it was new. Anyone have a hint?
 

Rivets

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Sounds to me like the main jet in the carb bowl screw is plugged. A good cleaning should do the job.
 

Garacuda

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I bought a brand new Husqvarna tiller last year that surged when I brought it home. I called the dealer right away and they had me bring it back in. I assume they cleaned the carb. Anyway, it never surged again after that. Don't know why they ignored it when they tested started it (which they say they do).

I agree that there's a speck of something in the jet. Sometimes a little carb cleaner in the fuel will clean it up.
 
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Thanks guys. I'll check it out next time. Think he got it at Menard's or Wal*Mart.
 
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