mower 'lopes' at idle

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  #1  
Old 08-08-02, 08:22 PM
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mower 'lopes' at idle

I've got a craftsman mower with the 21hp briggs.

I got this mower new in january, and it has 22 hrs on the clock.
Lately, but not always, when returning the throttle to idle, it will 'lope'.. almost die then catch itself, almost die then catch itself. If I pull out of the choke just a little, it smooths out. If I idle it up a bit, it smooths out. Again though, it doesn't do this always, and it's only done it about 3 times in the past month.

What do I need to check for this?

Had no other problems with the mower, and it's a great mower!
 
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  #2  
Old 08-08-02, 11:38 PM
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Hello Pendragon!

The most common cause of this, in my experience, is water and/or trash in the carburetor. Clean the carb and your problem should be solved. Let us know how it goes!
 
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Old 08-09-02, 08:02 AM
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There's shouldn't be either, as the mower is garaged when not in use..
 
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Old 08-09-02, 11:14 PM
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It doesn't matter whether it's garaged or not. Condensation will develop inside with ambient temperature changes. It also builds up in the gas can that you use to fill the mower. However, keeping it indoors slows this down considerably, and since you havent had it very long, that may not be the problem.

If the air/fuel mixture screw is not backed out far enough, it will cause this problem you describe. Try backing the screw out 1/4 turn and see if it goes away.
 
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