Help cannot find year of motor or the right serial #

Skyla316

Petty Officer 2nd Class
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May 24, 2013
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I'm new to Mercury, anyways this is an inline 6, says 115 on the cowl but not sure, looked on the medal plate mounted near the stern and this serial number I have matched none of the reference guides I have researched.

Serial 0A155177

Please help!!

Thank you
 

Skyla316

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Re: Help cannot find year of motor or the right serial #

Your a blessing!!
Now did I research wrong by using my s/n on the mercury year identifier graphs? Just confused why I could match it
 

Skyla316

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Re: Help cannot find year of motor or the right serial #

Another q?
I'm looming for a factory service shop manual, I have found some used on eBay but they are printed versions of my motor but printed late 80's early 90's.
Is it crucial to find one that was printed in the year my motor is or we're the inline 6 90/115 hp the exact same in late 80's and 90's?

Thanks
 

carholme

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Re: Help cannot find year of motor or the right serial #

The correct manual you need for your s//n is P/N 90-86134--4. Getting harder and harder to find on ebay.

Gerry
 

Skyla316

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Re: Help cannot find year of motor or the right serial #

Thank you and could you inform me how to you obtained the year of my engine? I tried looking on the maxrules.com web site and saw no year 115hp that started with my model or serial number.
 

carholme

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Re: Help cannot find year of motor or the right serial #

Here is the one from the Maxrules site:

115 1985 EL 6630171 - A907776

You always discount the first 0 as it is just a computer number

Gerry
 

Skyla316

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Re: Help cannot find year of motor or the right serial #

I'm not understand something so I'm wondering do you convert my serial number from a guide? Or "word" like evinrude/Johnson does?
I just don't see how to reference my serial number to get the correct year.
What is the method?
 

Skyla316

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Re: Help cannot find year of motor or the right serial #

Please if you can explain the method to converting my serial number to use with the reference guides please.
 

Skyla316

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Re: Help cannot find year of motor or the right serial #

Ok we'll what I'm saying is that # 0A155 I don't see anywhere on the graphs, not even for 1980's 115 hp, that's where I'm confused as to why I can't figure it out. If there are no special configurations or adding or subtracting than what am I missing?
I see that I have to look for my serial number in between a certain length of numbers but do not see any in 115 hp that start with my serial #
 

carholme

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Re: Help cannot find year of motor or the right serial #

Post #2 is direct from Mercury and states that your engine is a 1985. Post #7 says the same thing, only it gives a s/n range and as your s/n falls within the range of 6630171 thru A907776 (engines manufactured in the 1985 year), it indicates that yours is indeed, a 1985 engine.

Gerry
 

belairbrian

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Re: Help cannot find year of motor or the right serial #

0A155177 is looked up as A155177. You drop the "0" off the front.

that's what Gerry has been saying.
 

Skyla316

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Re: Help cannot find year of motor or the right serial #

Is that the manual I need?
 

Skyla316

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May 24, 2013
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118
Re: Help cannot find year of motor or the right serial #

I messaged the ebay user that is selling the manual I posted a link to yesterday and he says that manual is not for my motor but it has the P/N 90-86134--4 that gerry said I needed.
so im confused:
here's another manual with that same part number but its "printed date is 1991 not 1985 which is the year my motor is:
Mercury Mariner Models 75 80 85 90 115 140 150 1991 Service Manual 90 86134 4 | eBay
 

carholme

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Re: Help cannot find year of motor or the right serial #

90-86134-4 is the number and it may have a later print date but it is still the same manual as it has no revision number change.
The next manual up for the 115 hp., 90-13645--2 begins at engine s/n 0A997142 thru 0D283221 and that is for the four cylinder 115s.

90-86134-4 covers the range of 4590512 and Above which goes right up to 0A997141.

Gerry
 

Skyla316

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May 24, 2013
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Re: Help cannot find year of motor or the right serial #

Thank you, don't know why these eBay sellers said it wouldn't work.
I'll take your word over them.
Thank you for all your help.
 
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