Quantcast
Jump to content

  • Join Today, It's Simple and FREE!

    As a member, you can post in our forums, upload your photos and videos, use and contribute to our downloads, create your own member page, add your ATV events, and even start your own ATV club to host your own club forum and gallery.  Registration is fast and you can even login with social network accounts to sync your profiles and content.

grego86

88 Yamaha Big Bear DIF yoke removal

Recommended Posts

My front dif is leaking oil pretty bad around the yoke. I completely pulled the whole dif from my bike and now stuck trying to get the yoke unbolted from the dif body. There's a large nut in the center of the yoke and I've tried using impact wrench and not budging. The nut and bolt kind of looks like it has a crimp spot made to keep it from backing off the bolt I guess. Does that sound right? What's the easiest way to remove it? Just soak with some type of lube and try again with the impact?

Share this post


Link to post
Share on other sites


That  is  just a   self locking  nut. I  can't tell whether someone  has  used a punch on it  to   lock it tighter  or  not  with the crud  in the  thread above it, but  it  should  come  undone  using an  impact  wrench.  Clean  the   thread above the dent in the   nut  to ass if the thread of the shaft is damaged..  If it  is, you  could  grind away the  damaged  spot  under  the  dent, but  you  likely  don't  need to grind anything away. also , when you  clean  the   shaft to  get a better  look,  make sure it is   regular right hand thread. It  appears to be  from  what  little I can see of it , but make  sure.

Use a big  pipe wrench to  keep the  yoke from  turning,  and use a  good  air or electric impact wrench to spin the nut off..

Edited by davefrombc

Share this post


Link to post
Share on other sites

I doubt the  nut  has a spring pin  holding it ..   Clean  it  off and look. If there's a hole drilled  through it, it  has one , but that  nut  looks  like a regular  self  locker to me.

Share this post


Link to post
Share on other sites


Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Similar Topics

    • By Mo Salem
      So my front hub broke, I’d like to put aftermarket on. Hard to find new oe ones. Please help. I’m new to all of this, I have some car knowledge and try to apply it
    • By StolenATV
      1987 Suzuki LT 80 and 2007 Honda CRF 50 dirt bike stolen out of my driveway on July 4th. Anyone with info that recovers them will get $400 no questions asked.
      Thanks
      The post Suzuki LT 80 Quad And Honda Dirt Bike appeared first on STOLEN 911.
      View the full article
    • By JacobSlabach
      So yesterday I picked up a 07 polaris sportsman 800efi stealth edition for 3k.  Will lead a pic ltr.  In good shape.  Here's what's wrong with it:
      The rpm needle doesn't work just like my other sportsman... not too worried ab that.
      The motor doesn't sound like it's running quite right and doesn't feel like it has much more power than my 500.  I'm thinking it needs a tune up and some fresh oil..  but also it feels like it's running rich.  It's a little buggy when you goose the throttle and sometimes farts when you let off (like I little backfire out the exhuast). I'm gonna check timing and valave clearence on the motor first but thinking of putting a tuner on it? Anybody got a suggestion?  Mainly looking for more power.
    • By derick geisendorfer
      I found a black rubber hose hanging down from the front of my Sportsman 850.  I'm trying to see if it's the diff vent hose, or something else and if it's something else, what it's supposed to attach to...  
    • By RCNY1
      Seems impossible to find a pair of front shocks for my 02 Yamaha Kodiak,newer or older listings are they the same as a big bear ?  Factory are $245 each !!! Any help appreciated 
  • Similar Tagged Content

    • By Wolf Studios
      Hi guys so I'm looking for any help or advice with a yamaha big bear 350 1997 (i think) it's fairly dirty and just been say for many years, boss says it's a non runner and I've tried and it will not start, ideally would love to do it up and get it running but have been told the engine has gone, cannot find a new engine anywhere. Anything I should check first before just taking the entire thing apart? 

    • By MarkinAR
      Working on my oldest son's buddy's 2000 Big Bear.  He was having some power loss at WOT so i thought it worth while to clean the carb and put at kit in it...or at least clean the OEM jets and use the new orings that come in the kit.  It starts and idles like a champ, but dies and wants to backfire with any throttle at all.  I assume lean because it will run decent with the choke on. Air screw adjusted fine, nice crisp idle.  This one has fuel/air screw, low speed jet, mid jet, and main jet.  I was assuming just trash in the low speed circuit so pulled it and cleaned again, still does the same. 
      Two questions I guess:
      1. Does it sound most likely trash in the off idle circuit?  This one has a few more passages and jets than I'm used to...and a darn diaphragm.
      2. It now really wants to leak at the bowl drain screw.  It doesn't seem to tighten enough to completely stop the flow.  Seat looks good, screw was dirty but cleaned up fine with a touch of 2000 grit paper.  First for me.  Any idea here?
    • By Walter Awe
      I HAVE a 2002 big bear 400 4x4. I have two wires atacking to the front of the carb. What are they for?
    • By Shook
      Hi I have a 2000 big bear 400 and i just put a new carburetor on it and it idles fine but when you try to accelerate it sounds like it is going to die, so when it sounds like it is going to die I will give it more throttle then it will go just fine.
    • By Nigel Bourn
      I’ve just bought one of these and came here looking for a service manual
      Mine has an air cleaner that I don’t seem to be able to find, it has round ends with square tabs on them, any ideas?
       
  • Recently Browsing   0 members

    No registered users viewing this page.


×
×
  • Create New...