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I HAVE NO SPARK ON 40HP MERCURY OUTBOARD MOTOR

Posted by Barbara Butler on

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1 Answer

Steve P

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  • Mercury Master
  • 3,712 Answers

Hey Barbara,, get one of these manuals,,, you will need it to trouble shoot this outboard..

Mercury Outboard Manuals by Seloc 1965 2014

Posted on Sep 23, 2017

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5 Related Answers

Gene Pitts

  • 159 Answers

SOURCE: relay switch for power tilt for Johnson outboard motor 40HP

Hello jalbin0308, I may can help but "NEED MORE INPUT" said ET. Model, year, HP, ect.

Posted on Oct 30, 2008

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Mark L. Roberts Jr.

  • 710 Answers

SOURCE: 40hp 1987 yamaha outboard motor will run for 30-60

Sound like the fuel pump is not keeping up with the engine's demand. Check it out. Good luck. Hope this helps.

Posted on Apr 27, 2009

Anonymous

  • 207 Answers

SOURCE: 1999 Mercury Mariner 9.9hp outboard motor

should be on the side with a lever but could you give me more info please

Posted on Jun 27, 2009

Mark Chapman

  • 1 Answer

SOURCE: Free wiring diagram for 1978 Mercury Outboard 115 HP boat motor

I have a maintainance manual for this engine (I have the same one) with pages of wiring diagrams. What specific system/area are you interested in, I could scan in the page(s) and email them to you.

Mark

Posted on Sep 20, 2009

Anonymous

  • 86 Answers

SOURCE: Spark plug gap 150 hp Yamaha outboard

The correct gap is .035

Posted on Oct 16, 2009

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3 Answers

40hp 1987 yamaha outboard motor will run for 30-60


Sound like the fuel pump is not keeping up with the engine's demand. Check it out. Good luck. Hope this helps.

Apr 27, 2009 | Boating

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