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Old 08-23-2006, 03:27 PM
CraftyRider CraftyRider is offline
LawnSite Member
Join Date: Apr 2006
Location: Eastern Kentucky
Posts: 6
19 HP, B&G Fuel Feed Problems

I have a Sears 42 inch riding mower with a Briggs and Stratton 19 HP engine that runs great when I first start it up, but begins running progressively slower in a about a 10 minute time frame. I though I may have had a clogged fuel filter so I purchased a clear aftermarket model. As you can see from the picture the filter is 95% full of fuel before starting, but as time goes on the fuel level in the see thru filter empties to about 5%.

If I turn the ignition off it wonít start back as if I have a vapor lock, but removing the gas cap has no effect. After 30 minutes of colling down about 20% fuel builds back up into the filter and it will start again. I readjusted the carburetor air for as richer mix and it helped a little. Iíve checked the fuel lines on either side of the filter and theyíre clear. The mower is about 10 years old and has not seen much use as I hire my yard to mown when I travel on my job. I can only conclude I need to rebuild the carburetor. Any advice would be much appreciated.
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