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Took boat out on water today and having problem with throttle response. With the engine cover on the engine idles and low speeds pretty well but at full throttle I can't get the rpm's up. If I take engine cover off and full throttle it runs great, but low speed and idle is sputtering or engine dies. Does this sound like air/fuel mixture problem? Float adj. valve setting? I started with new gas and recently rebuilt fuel pump. Any advice would be greatly appreciated.
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