How do you get the front sprocket off??

7 replies to this topic
  • DoctorRzed

Posted July 23, 2002 - 09:00 PM


Is there any tips?

  • sirthumpalot

Posted July 23, 2002 - 09:05 PM


Where are you stuck? You have to flatten the washer and then loosen the bolt. If the bolt is stuck then put it in neutral and use an air impact wrench and it will come right off. Put it in neutral to isolate the tranny from the shock of the air gun, the counter shaft has plenty of mass [inertia] that the air gun will still work fine.

  • beengoneawhile

Posted July 23, 2002 - 11:48 AM


Flatten washer, leave chain on, step on rear brake, loosen nut with wrench/socket/etc....

  • PumpkinHumper

Posted July 23, 2002 - 02:11 PM


im with the chain/brake system. been doing it for years.

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • Fireball

Posted July 23, 2002 - 02:29 PM


Me too. Chain/Brake works just fine.

  • Vanilla_Gorilla

Posted July 23, 2002 - 04:18 PM


a real mechanic uses a 1/2 inch air impact wrench on this. the shock from the air impact gun wont hurt the trans but its not a bad idea to put the bike in neutral. its also helpful to keep the chain on untill the nut is off.

  • MotoGreg

Posted July 23, 2002 - 06:31 PM


I use a 1/2" impact gun but if you're not used to using one every day you may want to tighten it back up by hand with a torque wrench... an impact gun can easily twist the end of the shaft off if you're not used to using that gun.

  • John_Lorenz

Posted July 24, 2002 - 03:01 AM


I gotta do it

For those hard to remove items

I always use me trusted and proven Lil Buddie

Of course use with caution :)

[ July 24, 2002: Message edited by: E.G.O.**** ]

Related Content


Yamaha YZ450F 2017 by Chris.GVS

Yamaha YZ450F 2017
  • * * * * *
  • 1 review
  • Last review by Tommyk_55
  • On January 15, 2017

2016 YZ450 by CaptainKnobby

Dirt Bike   Dirt Bike Technical Forums   Suspension
  • Hot  59 replies

BIGBORE FOR YZ450F 2006? by Taattie94

Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • 5 replies
WR Camshaft Swap Info - last post by jamesm113

WR Camshaft Swap Info

  • 0 replies

Megabomb Fitment by 288yz450

Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • 1 reply

Join Our Community!

Even if you don't want to post, registered members get access to tools that make finding & following the good stuff easier.

If you enjoyed reading about "" here in the ThumperTalk archive, you'll LOVE our community. Come join ThumperTalk today!

The views and opinions expressed on this page are strictly those of the author, and have not been reviewed or approved by ThumperTalk.