Please note this thread has been inactive for 90 days. For the best results, please start a new thread.
Results 1 to 2 of 2
  1. #1
    Petty Officer 2nd Class
    Join Date
    Sep 2009
    Posts
    154

    Default propeller for mercury 20 HP 1976

    I have a mercury 20 HP (Merc.200) 1976 and I need a new propeller, it came off. I've had a 9X9 but my motor was turning very very fast at full throttle. Did'nt give more speed between to full. I'm looking for a 11 pitch 3 blades propeller. I need a propeller with 8 splines. Many of them are 10. I've looked also for 8-15HP propellers for 1986 and younger and they have also props with 8 splines same thing as my 20 hp mercury.

    Do they fit on my outboard, I would need a 11X10 3 blades props, my boat is in aluminum. I do not have a pontoon.

  2. #2
    Lieutenant Junior Grade corm's Avatar
    Join Date
    May 2000
    Location
    Eau Claire WI. USA
    Posts
    1,238

    Default Re: propeller for mercury 20 HP 1976

    Hi,

    They make a 9x9 3 blade or a 9x11 2 blade for your engine.
    The 11"Pitch used to be the std prop but when the false floor and cushy seats came along Merc dropped the pitch down to compensate for the added weight of the boat. If you AL hull is of the bare floor type you can run the 11" with no problems. There is not much of a selection for the old 20's anymore that I know of. I do not know if the newer 3 bladed props will fit with the same spline. I never tried it. I think the hubs are a different length and a different thrust hub.
    Michigan Wheel may make a prop for your engine still if Merc does not.
    This is free internet advice.

    Have Fun,
    corm

Similar Threads

  1. Propeller for 1970's Mercury 45
    By jon8910 in forum Mercury & Mariner Outboards
    Replies: 1
    Last Post: January 10th, 2006, 11:30 AM
  2. Mercury (110) 9.8 HP propeller
    By bece13 in forum Mercury & Mariner Outboards
    Replies: 1
    Last Post: January 24th, 2005, 08:44 AM
  3. Propeller for mercury
    By eula30 in forum Mercury & Mariner Outboards
    Replies: 3
    Last Post: March 21st, 2003, 06:33 AM
  4. Mercury 7.5 Propeller
    By Vahevala in forum Mercury & Mariner Outboards
    Replies: 2
    Last Post: March 15th, 2003, 05:33 AM
  5. 35 h mercury propeller
    By marvin pitts in forum Mercury & Mariner Outboards
    Replies: 1
    Last Post: August 21st, 2000, 09:23 PM
  1. iboats Forum Directory - Over 100,000 forum posts organized by topic