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Nissan, (Mercury / Tohatsu) 2.5 - 2 Stroke - Poor WOT
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<blockquote data-quote="muddywaders" data-source="post: 467299" data-attributes="member: 13234"><p>Sam your motor is equipped with a variable venturi carb that utilizes a tapered needle in the main jet.The needle has multiple grooves that hold it in the throttle/slide and can be positioned higher or lower by means of an e-clip to adjust for altitude.I suspect you need to raise the needle(richer).</p><p> Tohatsu motors 2.0-3.3hp are the same and the horsepower ratings are achieved with a restrictor plate in the carb which can be easily removed.</p><p>I have bought and sold many of these single cylinder two stroke motors as they remain popular for dingies,Common issues are reed valves,fuel petcock leaking and also the impellers need to be fresh to prevent overheating at idle/trolling speed. m.w.</p></blockquote><p></p>
[QUOTE="muddywaders, post: 467299, member: 13234"] Sam your motor is equipped with a variable venturi carb that utilizes a tapered needle in the main jet.The needle has multiple grooves that hold it in the throttle/slide and can be positioned higher or lower by means of an e-clip to adjust for altitude.I suspect you need to raise the needle(richer). Tohatsu motors 2.0-3.3hp are the same and the horsepower ratings are achieved with a restrictor plate in the carb which can be easily removed. I have bought and sold many of these single cylinder two stroke motors as they remain popular for dingies,Common issues are reed valves,fuel petcock leaking and also the impellers need to be fresh to prevent overheating at idle/trolling speed. m.w. [/QUOTE]
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Nissan, (Mercury / Tohatsu) 2.5 - 2 Stroke - Poor WOT
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