Please note this thread has been inactive for 90 days. For the best results, please start a new thread.
Results 1 to 7 of 7
  1. #1
    Cadet
    Join Date
    Jun 2010
    Posts
    13

    Default Johnson seahorse 6hp (164cc) oil ratio plz.

    I recently bought this outboard engine but i dont know what oil to use and ratio.Could you plz help me?

    Thanks in advance.

    John , Greece.

  2. #2
    Vice Admiral
    Join Date
    May 2008
    Location
    TX, Formerly FL
    Posts
    5,189

    Default Re: Johnson seahorse 6hp (164cc) oil ratio plz.

    post the model number or year please. It's most likely 50:1, but you want to be sure....

  3. #3
    Cadet
    Join Date
    Jun 2010
    Posts
    13

    Default Re: Johnson seahorse 6hp (164cc) oil ratio plz.

    Quote Originally Posted by tx1961whaler View Post
    post the model number or year please. It's most likely 50:1, but you want to be sure....
    Thanks a lot for the reply.
    Where i can find the model number ? The only i know is the serial number.

    john.

  4. #4
    Captain
    Join Date
    May 2004
    Location
    Kent, UK
    Posts
    3,260

    Default Re: Johnson seahorse 6hp (164cc) oil ratio plz.

    Post the serial number. Older models had a two part serial number, the first part being the relevant model number The numbers should be on a plate on the transom bracket

    Do you know the age.

    Generally anything from 1964 onwards will run on 50:1. I think all 6 hp models are after that year. ( except for a couple from the 1920s)

  5. #5
    Cadet
    Join Date
    Jun 2010
    Posts
    13

    Default Re: Johnson seahorse 6hp (164cc) oil ratio plz.

    Quote Originally Posted by Vic.S View Post
    Post the serial number. Older models had a two part serial number, the first part being the relevant model number The numbers should be on a plate on the transom bracket

    Do you know the age.

    Generally anything from 1964 onwards will run on 50:1. I think all 6 hp models are after that year. ( except for a couple from the 1920s)
    Thanks for the reply @Vic.S.
    The s/n: 6203B17031 I dont know about the age.
    Is there a spesific kind of oil?

  6. #6
    Captain
    Join Date
    May 2004
    Location
    Kent, UK
    Posts
    3,260

    Default Re: Johnson seahorse 6hp (164cc) oil ratio plz.

    6203 is the model number. It makes it a 1972 model

    50:1 fuel mix then using a TCW3 2 stroke outboard engine oil

    That's near enough 1 pint in 6 gallons

    more precisely

    2.56 fluid ounces per US Gallon

    3.2 fluid ounces per UK (Imperial ) Gallon

    20mls per litre anywhere in the world except the USA

    2% if you are a mathematician

  7. #7
    Cadet
    Join Date
    Jun 2010
    Posts
    13

    Default Re: Johnson seahorse 6hp (164cc) oil ratio plz.

    Quote Originally Posted by Vic.S View Post
    6203 is the model number. It makes it a 1972 model

    50:1 fuel mix then using a TCW3 2 stroke outboard engine oil

    That's near enough 1 pint in 6 gallons

    more precisely

    2.56 fluid ounces per US Gallon

    3.2 fluid ounces per UK (Imperial ) Gallon

    20mls per litre anywhere in the world except the USA

    2% if you are a mathematician
    Thanks a lot .Thanks for the explanations .And have a nice summer.

Similar Threads

  1. Gas/oil ratio changed for a 2hp Johnson Seahorse?
    By Capt-Mark in forum Johnson & Evinrude Outboards
    Replies: 1
    Last Post: July 8th, 2008, 10:29 PM
  2. Johnson Seahorse 35 HP, oil/gas ratio?
    By jake74 in forum Non-Repair Outboard Discussions
    Replies: 1
    Last Post: May 11th, 2007, 02:31 PM
  3. 55 johnson seahorse fuel/oil ratio
    By justin21 in forum Johnson & Evinrude Outboards
    Replies: 2
    Last Post: May 22nd, 2006, 04:51 PM
  4. 1982 Johnson Seahorse 175 Gas/Oil ratio?
    By 23proline in forum Johnson & Evinrude Outboards
    Replies: 1
    Last Post: May 29th, 2005, 08:51 PM
  5. oil ratio for a 1957 johnson seahorse
    By gazelle in forum Johnson & Evinrude Outboards
    Replies: 1
    Last Post: March 28th, 2003, 06:52 AM
  1. iboats Forum Directory - Over 100,000 forum posts organized by topic