Engine was recently serviced by Yam dealer. Ran it up on the water today, started 2ns pull from cold, idle and up to half throttle all sweet as a nut, anything over half throttle the engine seems to be struggling for fuel. If you open her up nothing happens for a while then all of a sudden the fuel seems to kick in and we surge forward for a while then the revs drop to about half way. The engine never dies completely. Has anyone had similar before I going running back to Service agent.
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Yam 40HP 2 stroke 3 cylinder 1986
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