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Offline waveydavey

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Mercury Outboard
« on: August 06, 2006, 21:36:04 »
Does anybody know anything about outboard engines? I have a Mercury 402 (made around 1975) which is running badly at high revs.
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Offline blueboar

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Mercury Outboard
« Reply #1 on: August 08, 2006, 22:07:04 »
Not sure about outboards, is the mixture set right?.

have you had a look at    http://www.marinepower.com/download/dosearch/@isnew/desc?mod=4&lang=EN&categories=OUTBOARD$

It has all Mercury outboards Operation and maintenance maunals

Good luck
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Offline dazzawhipple

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Mercury Outboard
« Reply #2 on: August 15, 2006, 09:09:51 »
I would check the coil packs under the flywheel

The last on I had was a 2 stroke evinrude (Spelling rubbish!!!) 18 on a small crusuier, the coils packs packed up a few times

Darren
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Offline woody

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Mercury Outboard
« Reply #3 on: August 15, 2006, 09:20:59 »
not worked on these for years
BUT
last time i had an old mercury engine with running problems
having tried all the usual bits
it turned out it was wear on the reed valves????

mercury have them on the crank (me thinks)
jap stuff have them under the carbs
this makes it very difficult to replace them
so check all the easy stuff first
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Offline extreme90

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Mercury Outboard
« Reply #4 on: August 31, 2006, 22:28:10 »
youhuuuu
y didnt you try me  :shock:
i work on the damd things day in day out  :shock:  lol
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Offline extreme90

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Mercury Outboard
« Reply #5 on: August 31, 2006, 22:29:53 »
Quote from: "dazzawhipple"
I would check the coil packs under the flywheel

The last on I had was a 2 stroke evinrude (Spelling rubbish!!!) 18 on a small crusuier, the coils packs packed up a few times

Darren


spelled correctly
and the thing under the flywheel is called the stator  :lol:
posh word for 3-6 coils joined t geva  :twisted:
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Dan Thomas,                  Matt Price
Team Relentless " No half measures "
Bobtailed Auto Td5 90 comp truck........... Got more tricks than a magician !!

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http://www.Gigglepin4x4.net >> For when the going gets tuff, and one motor just isnt good enough !!!
http://www.gwynlewis4x4.co.uk >> the guy everyone forgets, but he doesnt forget your custom.

Offline extreme90

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Re: Mercury Outboard
« Reply #6 on: August 31, 2006, 22:32:43 »
Quote from: "waveydavey"
Does anybody know anything about outboard engines? I have a Mercury 402 (made around 1975) which is running badly at high revs.


whats it doing at high revvs ?
stuttering ?
dropping of and picking back up?
or missfireing?
does it do it with hood fitted?, whats it like with the hood off
i have alot of problems with lack of air under hood which causes it to drop off in power
more info needed m8y really
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Dan Thomas,                  Matt Price
Team Relentless " No half measures "
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http://www.Gigglepin4x4.net >> For when the going gets tuff, and one motor just isnt good enough !!!
http://www.gwynlewis4x4.co.uk >> the guy everyone forgets, but he doesnt forget your custom.
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