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engine will almost always wont run unless choke is pulled out?

14 hp briggs will usually not run unless the choke is pulled out. I rebuilt the carb problem still persists? what can I do to remedy this situation.I also rebuilt the pump as well. This is a briggs 14 HP Twin II commercial model # 400707, type 1221 02
Thomas Donadio, June 2006
Check the gas cap and also check the fuel pump pick up diaphram might be a week spring.

Mike Johnson, November 2007
Make sure the gasket between the carb and intake manifold is sealing up. If you've rebuilt and adjusted the carb it must be sucking air somewhere.

Rick, June 2006
link Click here to see other fixes for Briggs & Stratton 400707.