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My yard machine 14.5 HP B&S will not start I cleaned the crab and that didn’t work then I replaced the carb and it worked for a little bit (15m) then it quit starting I tried l cleaning the tank and that didn’t help either. It is getting gas to the carb and when it does start it runs great no choke needed. I am completely clueless on it any ideas? Thanks! Mason

Drain your gas tank, and put fresh gas in the tank. Add some Seafoam gas treatment to the new gas. If the fuel system is clogged up, the Seafoam will clean it out and your engine will run like new. https://seafoamsales.com/small-engines/