Please note this thread has been inactive for 90 days. For the best results, please start a new thread.
Results 1 to 4 of 4
  1. #1
    Cadet
    Join Date
    Aug 2008
    Posts
    6

    Default Mariner Shear Pin

    Hope I'm note the 1001st person to ask this question but here it is anyway:

    I have mainly used older Johnson outboards but just picked up a used 5 hp 2 stroke Mariner.
    I've been going over it in the garage, getting familiar with it and thought I would change the shear pin or at least get to it and reassemble. What a surprise!! No pin!
    I did a little internet searching and read about the spline drive but couldn't get any good info on what this all means.
    If I hit a stump or something, what breaks or gives? Do I need to carry a spare prop now instead of shear pins? (Not saying carrying a spare prop would be bad even with shear pins)
    There must be some kind of built in safety feature... what is it?!

    Thanks,

    Ernie

  2. #2
    Master Chief Petty Officer This_lil_fishy's Avatar
    Join Date
    Jul 2008
    Location
    Orangeville, Ontario
    Posts
    841

    Default Re: Mariner Shear Pin

    Not sure, but larger motors have a rubber hub that is 'supposed' to give when you hit stuff....the splines hold the prop to the shaft, and the rubber hub connects that to the actual prop.


    Ian

  3. #3
    Cadet
    Join Date
    Aug 2008
    Posts
    6

    Default Re: Mariner Shear Pin

    Thanks Ian,
    That makes sense. I assume then, after a while the slip function weakens and the prop slips even when you don't want it to.
    System must work though I guess, I'll just wait and see!

    Ernie

  4. #4
    Master Chief Petty Officer This_lil_fishy's Avatar
    Join Date
    Jul 2008
    Location
    Orangeville, Ontario
    Posts
    841

    Default Re: Mariner Shear Pin

    Yeah, I'm no pro, but they have a pretty long life, unless you hit a lot of stuff....the prop on my fifty that I got is very chewed up, but the lower unit seems fine, so my guess is that it works out alright.


    Ian

Similar Threads

  1. Is a shear pin from the hardware store adequate for the prop shear pin?
    By jwilkey84 in forum Johnson & Evinrude Outboards
    Replies: 20
    Last Post: November 24th, 2012, 10:06 PM
  2. shear pin
    By island hunter in forum Non-Repair Outboard Discussions
    Replies: 2
    Last Post: August 31st, 2007, 08:03 AM
  3. Will a cotter pin work as a shear pin?
    By fishermanms in forum Johnson & Evinrude Outboards
    Replies: 28
    Last Post: August 27th, 2007, 11:11 PM
  4. shear pin
    By trackersocha in forum Johnson & Evinrude Outboards
    Replies: 12
    Last Post: April 19th, 2005, 03:03 PM
  5. shear pin
    By sergioy in forum Johnson & Evinrude Outboards
    Replies: 1
    Last Post: April 24th, 2003, 06:40 AM
  1. iboats Forum Directory - Over 100,000 forum posts organized by topic