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MTD Lawn tractor


mongo1969's Avatar
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Join Date: Aug 2008
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MO

10-07-08, 12:49 PM   #1  
MTD Lawn tractor

I have a MTD lawn tractor with Briggs and Stratton 422707-1214-01. I rebuilt the carb on this thing and it wants to run at full speed. I've backed the idle screw out almost all of the way and still full speed. I can put the choke at 3/4 to half and it will idle down and let me change speeds. Is the carb the problem or maybe the linkage somewhere else. Thanks in advance.

 
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30yearTech's Avatar
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10-07-08, 02:06 PM   #2  
The problem could be in the linkages, or the governor may need to be adjusted.

 
mongo1969's Avatar
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10-08-08, 06:11 AM   #3  
Thanks 30year for the speedy response!! I just noticed that there is a small amount of gas that spatters up from the intake as well. Before I start tearing apart the linkages and reinstalling should I tear the carb apart one more time to make sure everything is sealed properly? I have never had this much trouble from a carb rebuild.

Thanks

 
30yearTech's Avatar
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10-08-08, 10:47 AM   #4  
A little blow back is not that unusual and could indicate some issues with your valves. Since it does start and run, I would not be concerned about the blow back at this time. I still think the problem is in the linkage hook up to the carburetor or your governor adjustments.

 
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