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1980 40 hp. Mercury won't rev past idle
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<blockquote data-quote="JMichael" data-source="post: 391882" data-attributes="member: 7544"><p>There should be a latch release of some sort at the top of motor, probably under the recoil starter handle. If you operate that latch release, the badge/emblem will come off the front of the motor. Behind that emblem is another latch that releases the middle wrap around cowling. From there you should be able to see how to unbolt the top cowl/starter cover. </p><p></p><p>As for what your motor is doing, it sounds like you might have sucked some trash up in the main jet. Possibly some varnish that broke loose in the bowl. When was the last time the carb was cleaned?</p><p></p><p>Edit: I went back to look at the diagram for your motor a little closer and that latch isn't quite like the one I had and described above. After looking a little closer, it appears that the front emblem might pop out at the top or bottom and then drop out of the way, exposing the cowl latch behind it. Here's a link to the diagram, maybe this well help you. </p><p></p><p>https://www.crowleymarine.com/mercury-outboard/parts/673_20.cfm?mdl=X5JFEL</p></blockquote><p></p>
[QUOTE="JMichael, post: 391882, member: 7544"] There should be a latch release of some sort at the top of motor, probably under the recoil starter handle. If you operate that latch release, the badge/emblem will come off the front of the motor. Behind that emblem is another latch that releases the middle wrap around cowling. From there you should be able to see how to unbolt the top cowl/starter cover. As for what your motor is doing, it sounds like you might have sucked some trash up in the main jet. Possibly some varnish that broke loose in the bowl. When was the last time the carb was cleaned? Edit: I went back to look at the diagram for your motor a little closer and that latch isn't quite like the one I had and described above. After looking a little closer, it appears that the front emblem might pop out at the top or bottom and then drop out of the way, exposing the cowl latch behind it. Here's a link to the diagram, maybe this well help you. https://www.crowleymarine.com/mercury-outboard/parts/673_20.cfm?mdl=X5JFEL [/QUOTE]
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1980 40 hp. Mercury won't rev past idle
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