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Craftsman lawn mower rough idle

Posted by danh5 10 (My Page) on
Sat, Apr 27, 13 at 18:48

I have a Craftsman Mower Model #917.273750

Problem: Idles rough and stalls after 10-15 secs.

What I've done so far:
Replaced, Air Filter, Oil Filter, Fuel Filter, spark plug. Added new oil. New gas cap and add new fuel. No luck.

Any suggestions would be helpful.
Thanks.


Follow-Up Postings:

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RE: Craftsman lawn mower rough idle

  • Posted by mla2ofus z4b Caribou Co. Id (My Page) on
    Sat, Apr 27, 13 at 22:32

Sounds like a vacuum leak between the carb and engine.
Mike


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RE: Craftsman lawn mower rough idle

Does it run at high speed?


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RE: Craftsman lawn mower rough idle

Yes..Mower will run at high speed. But sputters and stalls when at idle.


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RE: Craftsman lawn mower rough idle

I was able to find the problem. Turn out to be a stuck choke valve. I removed the entire carb and cleaned it. There were a lot of build up grime and dirt in the inside of the carb bowl. I noticed one of the springs on the valve was covered with dirt and was restricting the valve to open freely. A good spray of carb cleaner and an air hose did the trick. Problem resolved.


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