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Old 09 October 2014, 05:43   #1
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Mercury Spark Plugs

Hi all, anyone shed any light on a requirement to have the Spark Plugs replaced at 300hrs on a Mercury Verado Outboard?

I cannot find any paperwork to support this proposal.

Any advice would be appreciated.
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Old 09 October 2014, 07:19   #2
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I can't talk for the Verado, as I am at the other end of the "tech spectrum", but plugs' insulation does degrade - I once meggered a set of plugs out my lethargic 2-Stroke Yam 55 - one failed Patt test as essentially short circuit, the other scraped through.

With new plus the engine sang.

I guess if you buy the Mercury approved (i.e their part number) plugs then they will degrade at a known rate and you won't loose performance etc. if you change them after 300 hrs.

Granted that is only 12.5 days (continuous) so yes, I see why you ask.
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Old 09 October 2014, 07:31   #3
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Plugs, 30 sec on google
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Old 09 October 2014, 09:17   #4
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You know Starovich I found that so fecking impressive I made my wife watch it happening !!!

I know so little about computers !!!

Nice one.
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Old 09 October 2014, 10:18   #5
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Quote:
Originally Posted by paddlers View Post
You know Starovich I found that so fecking impressive I made my wife watch it happening !!!

I know so little about computers !!!

Nice one.
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Old 09 October 2014, 12:49   #6
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What is funny is the auto manufacturers are stating longer and longer intervals. It winds up being well over 1,500 hours of use before spark plug replacement.
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Old 10 October 2014, 03:55   #7
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you could google the verado club in the U.S.A. If its still going that was a good site for verados.
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Old 10 October 2014, 08:02   #8
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hi

i have a Suzuki 90 service interval 100hrs or yearly when you buy the service kit plugs are included + water pump impeller piece of mind keep old as spares just in case
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Old 12 October 2014, 10:31   #9
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ILFR6GE-NGK or the Mercury Number is 33-889246Q39 £21.57 each from us!
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Old 12 October 2014, 12:02   #10
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My merc mechanic said u only need to change them every 2-300 hours, just a clean and gap on the annual service
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Old 13 October 2014, 03:52   #11
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Thanks all,

Especially Starovich! I sense a point was being made . . tbh I had tried similar words but clearly not in that order! Anyway I came here to seek independent advice as I have heard two contradictory pieces of advise from two different Merc Service guys. But I guess if the manual says so, for warranty I gotta take it on the chin! And if it might help maintain the performance well perhaps it is worth it!

And Turbodiesel thankyou, this gives me something to work on
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Old 13 October 2014, 06:18   #12
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I work in IT and get these sorts of questions a lot, I find that this method gives a more permanent memory to get people to use Google more.

You are correct though there is an art to getting the best out of Google, Google says .. Google Search Tips
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Old 13 October 2014, 14:31   #13
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Service manual says just check them at 300hrs and replace if required.
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