B&S starts fine but dies after 30 sec


Old 06-19-07, 03:08 PM
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B&S starts fine but dies after 30 sec

i have a 4hp b&s mower. it starts kinda hard at first - 10-15 pulls , runs for a minute or two then dies. i prime the bulb and it fires right up at first pull. after that, it will die every 15-30 sec but restarts, after priming, on the first pull. i have noticed that i can lift up the rear of the mower when it is about to die and it will stay running. until i put it back on the ground that is, which then it will die in 5-10 sec. i have tried lifting the front end off of the ground when it is about to die, with the handle of course, and it dies anyway. weird. has anyone else experienced this problem before?
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Old 06-19-07, 07:01 PM
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Engine model#? If I had to guess, I'd say carburetor problem...probably a briggs classic design with the metal tank, and possibly a pickup tube cracked on the carb.

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