RHS Crank Seal ?'s

How do I get the primary drive gears off? The manual says to just pull them off, but they seem to be on their pretty good; it almost appears to be threaded on.


Also, Which way is the seal suppose to go in? The lips facing out or in. I obviously haven't pulled the old one out, but it has the lips facing in.

Is it supposed to be like that or like in this thread.





I just talked to Ned Walters, his son Brian rides a CR135 and 144 in WYNOA HS series. Primary gears just slide off and seal goes smooth side out.


Easier said than done I guess...Thanks Norm for the quick help.

Any tricks of the trade to get these F'ers off.:thumbsup: The manual states pull the .... off whilst showing an ungloved hand effortlessly sliding the first gear off.:moon:

I wouldn't dare try to pry them off, the surrounding metal is too soft and I wouldn't want to damage anything anyway. It took me all of 30 mins to get this far and now one step from getting to the problem I can't make any headway( in another 2.5hrs).

I have been grasping the gear with a cloth and pulling as hard as I can, to the point I'm lifting the bike off the ground and they won't budge. I gave the shaft and gears several good coatings of WD and scraped off what appeared to be dried up grease off the shaft, but still no go.

The good news is there virtually no play up/down or side to side on the flywheel, so the bottom end should be good to go for a while.

Thanks in advance.


Any luck? Ned says to try a battery clamp uller on the small gear or pry gently between the two. You have to get the small one first.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Similar Content

    • By birdland101
      Restored 1974 honda xr75 original motor and frame podercoated frame runs, looks, shifts, stops good. top end rebuild many new parts most all honda. email birdland101@hotmail.com. May trade for decent riding lawn mower. 
    • By Bryan Bosch
      Anyone going? We'll be there w/ ThumperTalk Contributing Editor @Scott Meshey 141 Dealer ship said they'd be kicking things off 4:30 to 5pm tonight. Hope some of you can make it.

    • By 1madgerman
      Hi Thumpertalkers, 
      Just making a thread where I can share my videos as I make them.
      I will start the post with posting a few old ones until I get some more new ones.
      I'm no expert by any means just have fun making and sharing videos!
      Thanks lars
    • By 305hestbeck
      So I just sold my bike 2017 TC250 with only 17 hours on it. When it left it was in brand new condition. But 2 days later the engine cases were being split.
      Turns out the Idler gear had snapped off during the new owner’s first ride. Of course I am not paying for the fix as one it is clearly a manufacturing defect. I told him If needed I would help by me claiming it as warranty issue.
      Anyways I did some research and discovered that the KTM/Husky expected a 6x12 to hold the idler gear sys together on 2017.
      Well this seems to be an issue and KTM did fix it for the 2018 models. They actually updated the whole Idler gear sys, but if you still have a 2017 2 stroke the fix before it happens which it could on the first kick would be to replace the bolt with a 6x20.
      You will have to tap the hole for more treads. Actually the 2018 engine case was also updated for this and that’s all they did.
      I own a 2018 TX300 now. One reason why I looked into it. 
      Just thought I would share.