9.8hp 1970's 2-Stroke Mercury Outboard Troubles

Discussion in 'Outboard Maintenance' started by CISbrown, Jan 19, 2011.

  1. Jan 19, 2011 #1
    CISbrown

    CISbrown Got Phish?

    27
    0
    81
    I am having outboard troubles. I am a complete novice when it comes to outboards so take it easy on me. My terminology may not be right, but please be patient, I'm still learning.

    My outboard runs great (engine works fine) but isn't engaging properly. What I mean by engaging is that when I put it in either forward or reverse it acts as if its stuck in weeds or spinning the prop. It doesn't do it all the time, but it is very tedious. The prop isn't spinning correctly or gears aren't biting.

    Has anyone had an issue like this, or know what message I am trying to convey here?
     
    CISbrown, Jan 19, 2011
    CISbrown, Jan 19, 2011
  3. Jan 19, 2011 #2
    levip

    levip I Love microskiff.com!

    212
    0
    391
    sounds like a clutch dog going out ..... does it jump out of gear or make a grinding sound when you try to put it in gear ?
     
    levip, Jan 19, 2011
    levip, Jan 19, 2011

  5. Jan 20, 2011 #3
    CISbrown

    CISbrown Got Phish?

    27
    0
    81
    No grinding sounds. I would say it sounds more or less like its jumping in and out of gear. If I am very carfull with my acceleration I am able to move it out alright, but if I give it too much gas, or to fast it will start with the issue again.

    Its like running through weeds every 4 to 10 feet.

    thanks
     
    CISbrown, Jan 20, 2011
    CISbrown, Jan 20, 2011
  6. Jan 20, 2011 #4
    noeettica

    noeettica Well-Known Member

    3,653
    99
    2,253
    Where are you located ?
     
    noeettica, Jan 20, 2011
    noeettica, Jan 20, 2011
  7. Jan 21, 2011 #5
    levip

    levip I Love microskiff.com!

    212
    0
    391
    thats definitely a clutch dog mercs especially of that era have notoriously weak bottoms ends however it shouldnt be too hard to fix if you get yourself a service manual and a new clutch dog a new gearcase seal unfortunnately im only familar with johnny rudes but id be more than willing to give it a whirl
    give us your model and serial number and ill see if i can find the parts you need
     
    levip, Jan 21, 2011
    levip, Jan 21, 2011
  8. Jan 21, 2011 #6
    Flyline

    Flyline Won "Do More With Less" Award!

    1,715
    1
    891
    It's a clutch dog........replace this. I had it before on my rude 81' 15hp.
     
    Flyline, Jan 21, 2011
    Flyline, Jan 21, 2011
  9. Jan 22, 2011 #7
    noeettica

    noeettica Well-Known Member

    3,653
    99
    2,253
    I have a guy that can fix it
     
    noeettica, Jan 22, 2011
    noeettica, Jan 22, 2011
  10. Jan 22, 2011 #8
    CISbrown

    CISbrown Got Phish?

    27
    0
    81
    Judging by the responses I am assuming that it would ultimately be the clutch dog. Makes sense!

    I am very grateful for everyone's support and knowledge, an I will use it. So the next step is to find the part. I wll be searching, but if anyone can help that would be great. My specs are:

    Mercury 110 9.8hp
    3799768

    Now I'm not sure if those are the numbers that I need or not because the faceplate where the numbers are is kind of worn. Let me know if anyone has any suggestions, and thank you all again for helping me, I truly appreciate it.
     
    CISbrown, Jan 22, 2011
    CISbrown, Jan 22, 2011
  11. Jan 22, 2011 #9
    levip

    levip I Love microskiff.com!

    212
    0
    391
    clutch dog pn# is 52-63314
    heres an exploded view so you can kinda see whats going on in there
    http://www.marineengine.com/parts/mercury-outboard/mercury-outboard-parts.php?modelId=5299&model=110&serialId=5307&serial=3795658+THRU+4839253&componentId=4992&component=GEAR+HOUSING+ASSEMBLY

    and youll have a pm in a minute
     
    levip, Jan 22, 2011
    levip, Jan 22, 2011
  12. Jan 23, 2011 #10
    levip

    levip I Love microskiff.com!

    212
    0
    391
    also its a '71 or '72 in case a parts guy asks
     
    levip, Jan 23, 2011
    levip, Jan 23, 2011
  13. Jan 23, 2011 #11
    CISbrown

    CISbrown Got Phish?

    27
    0
    81
    I appreciate everyone's help on this matter, I will be posting my discoveries as I look further into the issue. I have it planned to take a part the lower unit to examine the clutch dog, and I will post pictures of what I find.

    You all have made a very confusing issue very clear, and I respect your input. Now I will run with what you all have said and let you all know where I wind up.

    Thanks ~ Michael
     
    CISbrown, Jan 23, 2011
    CISbrown, Jan 23, 2011
Loading...
Similar Threads Forum Date
1970's alumacraft 12' v hull General Discussion Jun 7, 2010
1970's tri-hull skiff rebuild (lots of pictures) Bragging Spot Jan 15, 2014
SOLD/EXPIRED 1970's 20hp Mercury Sold/Expired Classifieds Aug 10, 2013
SOLD/EXPIRED [m by=5A7E5250524747525058330 destboard=otherboats dest=1376176911]: '1970's 20hp Mercury' Sold/Expired Classifieds Aug 13, 2013