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Gail Gullett Posted on Apr 28, 2018
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What is the firing order on a 1972 Mercury outboard motor 50 HP?

1 Answer

Gordon Richard MacLean

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  • Expert 253 Answers
  • Posted on Mar 14, 2019
Gordon Richard MacLean
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Joined: Jan 26, 2012
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Good Day Gail,
I would Say 1,3,2,4
Regards
Gordy

5 Related Answers

Anonymous

  • 5158 Answers
  • Posted on Jan 23, 2009

SOURCE: mercury 50 hp outboard

I actually thought it was down by the prop... i was wrong....

Pretty good diagram here.... look at part number 1

http://www.sterndrive.info/mercury-outboard-parts/60hp_to_125hp_component_layout.html

scroll down for the part cost and description.

Robert

Please take a moment to rate this solution.. thanks

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Anonymous

  • 207 Answers
  • Posted on Jun 27, 2009

SOURCE: 1999 Mercury Mariner 9.9hp outboard motor

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

Anonymous

  • 77 Answers
  • Posted on Jul 02, 2009

SOURCE: mercury outboard 60 motor turning over but not firing up.

get some starting fluid and spray a liberal amount into the air intake, then try to turn over. if it will not turn over with starting fluid you have a problem either with your ignition system, example: plugs, coils, wires, ect. If it does fire and then die out with a shot of starting fluid then you have a carb problem. If the boat has been sitting anything over a month thats where I'm betting the problem is. Post back after you find out if its a fuel, or fire issue and we'll start the repair process.

Anonymous

  • 1 Answer
  • Posted on Sep 04, 2009

SOURCE: 1993 40 HP 4 cyl. Mercury outboard: Running along

I solved it with no help from the professional assistant team. Thanks for no help till I send money...DON'T THINK SO!!! Thanks for wasting my time.

Anonymous

  • 1 Answer
  • Posted on Sep 20, 2009

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

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Whats the firing order on a mercury 500 thunderbolt marine engine ?

Remove the 4 spark plugs , number 1 is the top piston so put it to tdc then with a screw driver feel through each plug hole for which is the next piston to come up to tdc etc etc till you have written the order ! 1,2,4,3 or 1,3,4,2 !!
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Why wont my 50 hp mariner start ?

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