yamaha 90 hp stall problem

[angler0520]

hey guys i am working on a 2003 yam 90 hp it did not run when i got it the fuel had lots of water cleaned fuel tank and carbs got it runing but it only runs for about a min and then stals out checked fuel pump looks great does anyone have any ideas??????

 

[robert graham]

Re: yamaha 90 hp stall problem

Carb idle jets are clean?, are your float needle valves/seats working O.K.?, Check fuel line from tank pick-up,fuel tank vent is open, tank fittings, primer bulb check valves(2-one in each end), quick disconnect on cowl, fuel filter/O-ring, fuel pump. Remove carb drain plugs and pump primer bulb to flush float chamber and float needle valves. Be sure your idle is set right, about 750RPM's. Good Luck and let us know what you find!