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3.5 hp b/s edger motor replaced gas tank gasket, and carb diaphragm. will start and run if I pour gas in carb.. wont **** from tank

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If this is a vertical crankshaft 3.5 then you may have the gasket and diaphragm inverted, the diaphragm must be against the tank, and the gasket against the carb for the fuel pump to work, also check the pickup tube screen for being plugged, water in the tank bowl or a film or varnish or oxidation on the main jet sock.

If this is a horizontal shaft, like a go-kart, all the stuff about plugged pickups and main nozzles applies, only big difference is if there was a lot of corrosion in the bowl under the carb, the main jet could be permanently plugged, also there should be a removable jet on the control lever side of the carb that will probably need cleaning as well, also when removing the carb from the tank make note of any fuel in the bowl, if there isn't any, make sure the pickup tube isn't plugged or split, the diaphragm spring is installed, and the bowl doesn't have a hole rotted through it.

Posted on Jun 01, 2010

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