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When starting mower, the choke resist opening and the engine coughs and sput gas out of the muffler. If I manually open choke, the engine comes up to operating speed and once warmed up, choke remains open by itself. If I remove the fine wire tension spring from choke, it starts cleanly and runs fine. Is it OK to run the mower without the spring attached or is there some other way to adjust that tension? Or am I totally pursuing the the solution to the problem wrongly?

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I'm not sure this will be of any help, however, try spraying WD40 on the choke butterfly. It may be a little sticky from varnish from old gas. Be sure the butterfly is moving freely.

Posted on May 09, 2010

Testimonial: "Thank you. I will do this. It has to help. Additionally, I put a capful of carburator cleaner in the gas tank. Perhaps the float may be sticking too."

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