Question about Seloc Mercury Outboard Engine Repair Manuals SEC-1406 3-4 Cylinder 2 Stroke 1965-89

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1988 mercury outboard engine has no spark from the spark plugs?

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paul

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Swop plug/lead for one that is sparking and this will eliminate that ! swop coil for one that works etc etc ! if still not working check wires then on the power pack you can swop each coil feed !

Posted on Aug 16, 2014

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DAVID PRESCOTT

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Check the coil maybe it needs replaced

Posted on Jun 05, 2012

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Mercury 150hp Optimax outboard


many mercury motors use a rubber mounted prop on the shaft which is a sacrificial idea to prevent gear box damage and prop damage in with under water objects
what you suggests indicates that at certain load situations that rubber has failed and allowing the shaft to turn but is not driving the prop as required
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try bottom plug on left bank
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1985 mercury 150 hp outboard V6 black-max.Where can I get a free service manual. I really only need the wiring diagrams. 1985 mercury 150 hp V6


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What gap is used in 90hp mercury 1985 ,?


if you are using buhw-2 plugs then you cant gap them as they are perma gap and no electrode !

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Have 115 Hp mercury outboard motor missing at full throttle and on idle. At mid throttle it is running fine. Any Idea what the problem could be. Thanks, Milton


Have your spark plugs changed AND carbs cleaned and adjusted.
Usually that can also be caused by a seized advance system ( plate under the flywheel, commanded to turn with the throttle linkage... )

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1 Answer

2stroke 8 HP mercury outboard,newish engine no spark


Clean or change the Spark Cables>
to cleab the pull them out and with antirust spray and clean

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