How to remove Sprocket Nut ?


12 replies to this topic
  • GlennR

Posted November 12, 2012 - 07:37 PM

#1

Is there a trick to removing the big nut that holds the front sprocket on?

How do I lock up the engine to loosen it? I know about putting rope into the spark plug hole, but that might not be the best thing for the WR.

I know some guys swap out sprocket sizes pretty often, so it must not be too hard, but I haven't do it before and don't want to wrestle a lot with it or break anything.

Should I use Loctite when replacing it?

  • usdualsports

Posted November 12, 2012 - 07:43 PM

#2

Impact will get it off since is spins fast. If you don't have an impact you can have a buddy sit on the bike put it in gear and apply the rear brake. I have also had to put an item in the rear sprocket to keep it from moving like a rag around the chain. To do it correct use an impact.

  • jawknee21

Posted November 12, 2012 - 09:55 PM

#3

I just put one back on yesterday. I would use loctite. An impact makes it easy. I kept it in neutral but had someone push the back brake while the chain is still on...

  • GuyGraham

Posted November 13, 2012 - 04:09 AM

#4

Line bike up perpenduclar to a wall & put front wheel against wall
bike in first gear
sit on bike
back brake fully on
3 ft breaker bar with socket on the c/s nut

  • usdualsports

Posted November 13, 2012 - 04:11 AM

#5

Line bike up perpenduclar to a wall & put front wheel against wall
bike in first gear
sit on bike
back brake fully on
3 ft breaker bar with socket on the c/s nut

I like the bike against the wall idea why didn't I think of that.

  • MANIAC998

Posted November 13, 2012 - 04:25 AM

#6

Loctite isn't needed when re-installing the nut. That's what the lockwasher is for.

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  • William1

Posted November 13, 2012 - 04:57 AM

#7

Use an impact. It is the least stressful on the bike.

  • GlennR

Posted November 13, 2012 - 06:04 AM

#8

Thanks guys.

I'll pick up an impact wrench/gun. Been wanting one anyway... I figured that was the best way.

  • jawknee21

Posted November 13, 2012 - 09:22 AM

#9

Loctite isn't needed when re-installing the nut. That's what the lockwasher is for.


maybe im missing it but i cant find the sprocket on the fiche. what is it under?

nevermind found it. Under transmission...

Edited by jawknee21, November 13, 2012 - 09:27 AM.


  • mslow

Posted November 13, 2012 - 11:53 AM

#10

i use a tripled up piece of safety wire and go through one chain link then to a hole in the rear sprocket, all while in nuetral.
no brake needed, i usually work alone so sometimes you have to improvise

  • cwallershasta

Posted November 13, 2012 - 12:00 PM

#11

I never had one that was to tight where I couldn't just set the bike on the ground and chock the rear wheel to get it off, but WD40 might help and I always clean up the spline on the shaft with it too. No need for locktite as you have the fold over spline washer, witch I buy and extra one to have if needed. I think after a couple of times of removal the washer gets comprimised folding it over the nut and it's good to just put a new one on.

Edited by cwallershasta, November 13, 2012 - 12:00 PM.


  • YamaLink

Posted November 13, 2012 - 02:14 PM

#12

Me trying to do it without an impact is a comedy of errors.....and a giant waste of time.

  • GlennR

Posted November 17, 2012 - 05:11 AM

#13

Bought a $20 impact gun from HF, which did the job. Then when installing the new one I realized that my torque wrench is only a 3/8" and I need a 1/2"....Arrrg! Always "something".




 
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