1 reply to this topic
  • therapture

Posted January 13, 2002 - 06:06 PM


What is the CB key problem I keep reading about? I assume CB = Counter Balancer? I would assume again that they mean the half moon key that holds the counterbalancer on is coming losse or shearing off? And is it easy to check!? I just got a fresh cylinder and piston rebuuild due to a loose oil drain bolt, and really don't want to trash something for a 50 cent part!

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

Posted January 14, 2002 - 10:24 PM


Did you do a thorough search and read up on the subject? It is not a woodruff (half moon) key, but is 5mm square in cross section. It is not too difficult to check and replace. I highly recommend it. The key is on the end of the crank, under the gear that drives the CB.

Related Content


yz250x vs 450 4t comparisons (preferably desert riding) needed by JakeNorthrupYZ450F

Dirt Bike   Make / Model Specific   Yamaha   Yamaha 2-Stroke
  • 9 replies

Yamaha YZ450F 2017 by Chris.GVS

Yamaha YZ450F 2017
  • - - - - -
  • 0 reviews

Snake pit oct 30th by The Anvil

Dirt Bike   Dirt Bike Regional Discussion   California
  • Hot  293 replies

Is it worth it? (Cam and High compression piston) by macgi77

Dirt Bike   Make / Model Specific   Honda   CRF 150/230 F/L
  • Hot  36 replies

Thinking about Yamaha 250... by Arctic Pride

Dirt Bike   Special Interest Forums   Pro Racing
  • Hot  491 replies

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.