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  1. #1

    Default Mercury 90 Hp, brown band, Year???

    Hello,
    I just pick up a Mercury 90HP brown band. The owner said it was 1989 model but he was not sure!
    Could anyone confirm its model year by the serial # A704164. It made in Canada.

  2. #2
    Join Date
    Sep 2010
    Posts
    18,492

    Default Re: Mercury 90 Hp, brown band, Year???

    Brown band was only marketed in 1984 / 85 years.----Where in
    Canada ?

  3. #3

    Default Re: Mercury 90 Hp, brown band, Year???

    On the serial name tag. It says Made by Mercury Marine LTD. Mississauga, Ontario, Canada. Made in Canada (Fabrique Au Canada).

  4. #4
    Join Date
    May 2007
    Posts
    9,222

    Default Re: Mercury 90 Hp, brown band, Year???

    Canadian serial records are a little sketchy but that serial (you are missing the leading "zero" - 0A7....) you have a 1985 built model that was sold as a new 1986 (1986 was the year they started selling the models with alpha-numeric serials).

    The "built in 1986" Canadian models had a starting serial of 0A71xxxx, so yours was built, most probably in the last few months of 1985.
    Graham

    A "professional" is someone who gets paid for their work - it doesn't necessarily mean they are good at it :)

  5. #5

    Default Re: Mercury 90 Hp, brown band, Year???

    Quote Originally Posted by galamb View Post
    Canadian serial records are a little sketchy but that serial (you are missing the leading "zero" - 0A7....) you have a 1985 built model that was sold as a new 1986 (1986 was the year they started selling the models with alpha-numeric serials).

    The "built in 1986" Canadian models had a starting serial of 0A71xxxx, so yours was built, most probably in the last few months of 1985.

    I don't know how to upload the pictures of it but the name tag is very clear "A704164. No 0 before A.

  6. #6
    Join Date
    Sep 2010
    Posts
    18,492

    Default Re: Mercury 90 Hp, brown band, Year???

    Brown stripes were used in 84 and 85 model years.----Your location in Canada ?

  7. #7

    Default Re: Mercury 90 Hp, brown band, Year???

    Yes, I am in Windsor, Ontario, Canada. Did not have check the compression of all six cylinders yet but I did a quick check to see if the motor still run. I just removed five top spark plugs and put a bit of gas in each cylinder and started the motor. The motor ran for a couple seconds so I guess the electrical system OK since it had spark. One thing I have noticed that the oil came out of the lower unit when tilted up. The seller said he did rebuilt last year????. If it had a recent rebuilt it should be good right? I still have a spare good 1977 of Mercury 800. I don't know if I could swap it. Both of them look alike.

  8. #8
    Join Date
    Sep 2010
    Posts
    18,492

    Default Re: Mercury 90 Hp, brown band, Year???

    About 4 hrs away from me.----Get your local shop to pressure test the lower unit.----Install a new impeller for the water pump.

  9. #9

    Default Re: Mercury 90 Hp, brown band, Year???

    Hello,
    The weather is getting a bit warmer (6 c). I tried to start the outboard with a flesh gas and full charged battery but the motor could not run. I put gas on a couple spark plug holes and it ran for a couple seconds and die. Anyone suggests what next step to make it run.

  10. #10
    Join Date
    Sep 2010
    Posts
    18,492

    Default Re: Mercury 90 Hp, brown band, Year???

    Carburetors are plugged or enricher is not working.----You did push the key in while cranking it over ?

  11. #11

    Default Re: Mercury 90 Hp, brown band, Year???

    Hello,
    I have other problem that I saw the oil leaking out of the lower unit drive shaft.
    Do you know what is the part number for this lower unit seal kit?
    I see this kit on EBAY but I am not sure it is the right kit for it.
    IP3628 OEM MERCURY MARINE LOWER UNIT SEAL KIT 26-66303A1 NEW OLD STOCK 66303A1


  12. #12
    Join Date
    Sep 2010
    Posts
    18,492

    Default Re: Mercury 90 Hp, brown band, Year???

    Well----I would say that the E-BAY listing is totally wrong.----That is not uncommon.------Have you looked at your motor and water pump gaskets , yes or no ?----If yes , have you compared those to the FLEA-BAY listing.-----Hurry and visit / support your local dealer or even this site.----What is the flea-bay listing # for this item ??
    Last edited by racerone; 02-20-2020 at 06:30 PM.

  13. #13
    Join Date
    Sep 2010
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    18,492

    Default Re: Mercury 90 Hp, brown band, Year???

    ?---Is the 26-66303A1 for a 20 HP motor ?

  14. #14

    Default Re: Mercury 90 Hp, brown band, Year???

    Hi,
    The eBay item number:293360437130

  15. #15
    Join Date
    Sep 2010
    Posts
    18,492

    Default Re: Mercury 90 Hp, brown band, Year???

    At least the seller is NOT claiming that it will fit your motor!----That fits a 20 hp motor, not yours.----Keep looking for a deal I guess.-----Or see a real dealer to get the correct kit.

  16. #16

    Default Re: Mercury 90 Hp, brown band, Year???

    I do some research and found out
    For inside seal #Part #76868 Bearing Carrier Seal Accommodates a 1.188" shaft size. Features a 1.687" outside diameter and is 0.250" wide.
    For outer seal # 26-70081
    I.D.- 1.185 O.D.- 1.754 Height- 0.360.
    So there are two different seals needed. What I could see is the OD is different between the seals. It could make sense since the inside seal goes in first for 1.687" bore then the outside seal goes second for 1.754" bore.

  17. #17
    Join Date
    Sep 2010
    Posts
    18,492

    Default Re: Mercury 90 Hp, brown band, Year???

    Post # 16 makes no sense to me.-----Not sure what you are trying to teach me !-------Visit your local / helpful / friendly dealer and get the right kit.----Nothing to it.
    Last edited by racerone; 02-21-2020 at 10:01 AM.

  18. #18

    Default Re: Mercury 90 Hp, brown band, Year???

    Hello,
    Right on this website http://www.marineengine.com/parts/me...1090625/278_23
    On the diagram for the propeller shaft requires seal#66 and #67. Two different seal part# for it.

  19. #19
    Join Date
    Sep 2010
    Posts
    18,492

    Default Re: Mercury 90 Hp, brown band, Year???

    ??-----See your local dealer.-----There must be one in your area.

  20. #20
    Join Date
    Jun 2013
    Location
    Duluth Mn
    Posts
    2,465

    Default Re: Mercury 90 Hp, brown band, Year???

    I have the same motor, a115. There are 2 seals back to back. Outer seal is installed lip out, inner seal installed lip inward. Inner seal is for sealing the lower unit lube, outer seal is lubed by water. Be sure to trailer your boat with the outboard in gear so the prop cannot spin and damage the outer "water side" seal.

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