Problem with 25 hp. Mercury

[bigwheel62]

Problem with 25 hp. Mercury

Motor will start and idle fine. Runs at low<br />speed. Throttle up, chokes down. I discovered that if I pull choke out slightly,<br />motor will run up to near 3/4 speed and then<br />it chokes down again. Mixed up fresh fuel,<br />and let motor run out of fuel before I set up<br />for winter. I don't think that the carb is<br />gummed-up. The motor is just three years old<br />and has very little running time on it. Any<br />advice appreciated.

 

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Re: Problem with 25 hp. Mercury

Re: Problem with 25 hp. Mercury

take it out and run it warm. Open it up till it dies,cut the ignition,then remove and inspect the plugs. <br />I suspect they'll be dry, as running it dry isn't going to keep it from gumming up in every case.<br />It WILL help, but a better plan is to run some fogger thru it before putting it up.<br />Speakin of fogger, if the plugs ARE dry, a can of de-carboning spray may take care of it. If it doesn't,inspect the carb for a plugged main jet,and the fuel pum for a deteriorated diaphram.<br /><br /><br /><br />------------------<br />Time to change my tagline