Logo
Get instant online access to repair manuals for your Mercury / Mariner outboard. Online Manuals
MercuryMariner
Order printed Mercury / Mariner service manuals — shipped to your door! Printed Manuals
MercuryMariner
Use engine diagrams to find & order parts for your Mercury / Mariner engine. Engine Diagrams
MercuryMariner
Find parts quickly with Mercury application guides. Quick Parts Guide
MercurySierraCDI
Results 1 to 8 of 8

Thread: 8 hp Mariner

  1. #1
    Join Date
    Jun 2018
    Location
    North Canada
    Posts
    5

    Default 8 hp Mariner

    Hi! New here and looking for some help. I picked up a 8 hp Mariner #677 S 044373 which I believe is a 1981.Now this motor has not run for 20 to 25 years, It has no spark! My question is what do I need to do to this motor to make it water worthy and is it worth it or do I look for something else!

  2. #2
    Join Date
    Sep 2003
    Location
    New Tripoli, PA, USA!
    Posts
    15,557

    Default Re: 8 hp Mariner

    First, replace the impeller.

    Jeff

  3. #3
    Join Date
    Jun 2018
    Location
    North Canada
    Posts
    5

    Default Re: 8 hp Mariner

    Ok will try to find one.Thanks

  4. #4
    Join Date
    Jun 2018
    Location
    North Canada
    Posts
    5

    Default Re: 8 hp Mariner

    Finally getting to this and not sure how to get the impeller out. There is a rubber plug on the side off the housing which behind that is a bolt which looks to lock onto a shaft which I think must be undone? Do I need to un hook the shifter lever which looks like a PIA! Checked YouTube but can’t seem to find any info on that motor!

  5. #5
    Join Date
    May 2007
    Location
    Ireland,the only country in the world you can go North to go South
    Posts
    1,931

    Default Re: 8 hp Mariner

    Try looking for videos on'78-'79 Yamaha 8 hp impeller change as your outboard is a Yamaha in all but name,and yup it is '81

  6. #6
    Join Date
    Jun 2018
    Location
    North Canada
    Posts
    5

    Default Re: 8 hp Mariner

    Thanks for the info,just got in from the garage and I undid the bolt behind the rubber plug and she came apart!So when I look for parts do I look up Yamaha instead of Mariner

  7. #7
    Join Date
    May 2007
    Location
    Ireland,the only country in the world you can go North to go South
    Posts
    1,931

    Default Re: 8 hp Mariner

    That will work if you find a friendly Yamaha dealer, but here's the Mariner version http://www.marineengine.com/parts/ma...00101-and-up-m

  8. #8
    Join Date
    Jun 2018
    Location
    North Canada
    Posts
    5

    Default Re: 8 hp Mariner

    Picked one up today and got it in thanks

Similar Threads

  1. Mariner 40B power head job, 1978 Mariner 40BE 676
    By H. I. McDunnough in forum Mercury Mariner Outboard Forum
    Replies: 56
    Last Post: 01-19-2015, 08:33 PM
  2. Looking for year/info about my Mariner 40 HP. Tag reads, Mariner 40E 6E9 L 40430
    By XDIME03 in forum Identifying Model / Year / Horsepower
    Replies: 3
    Last Post: 08-05-2014, 03:36 PM
  3. Mariner 40hp Twin Carb 1985 VS Mariner 40hp single carb 1998
    By Commando C2 in forum Mercury Mariner Outboard Forum
    Replies: 1
    Last Post: 05-10-2011, 09:43 PM
  4. Replies: 0
    Last Post: 04-21-2011, 08:42 AM
  5. Convert 99hp mariner to a 15hp mariner outboard
    By backhoe_bob in forum Test posting of messages, photos and formatting
    Replies: 1
    Last Post: 04-15-2009, 05:38 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •