Craftsman 21" 625 Mower w/ Briggs & Straton Engine, 3 yrs. old

bryan4966

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  • / Craftsman 21" 625 Mower w/ Briggs & Straton Engine, 3 yrs. old
My mower dies after about 5 minutes of use. I can choke it and it cranks and goes for about another 5 minutes. It will run without stalling when it runs standing still (until it runs out of gas). Only dies while in use.
The repair shop has rebuilt the carburator. Did not help. Then they replaced the coil. No help.
I drained the gas and use fresh gas. Thought it might be drawing a vacuum on the gas, so I open the gas cap when it is about to choke down, but that does not help.
The repair shop is stumped and doesn't know what to do next.
Anyone had a similar problem or have suggestions?
Bryan4966
 
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