1999 Yamaha 40 hp wont rev up past 2700 rpm

by Cabot Dougherty
(nine mile falls wa 99026)

1999 Yamaha 40 hp outboard 4 stroke on pontoon boat. Will not rev past 2700 rpm and then dies

i have rebuilt carb little help, replaced jets
new fuel pump, new gas tank and lines, new spark plugs, still having same problem

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