426 intermittently seizes up!


1 reply to this topic
  • thumperrob

Posted October 06, 2014 - 04:30 AM

#1

I recently purchased my 1st 426 with an unknown running fault.

So what happens is that you can kick it over for about 20 plus kicks and then all of a sudden it seizes solid and you can't kick it over. If you turn the engine backwards it'll free up and you can kick it over again.
I assume that it's got to e a damaged bottom end bearing??
Has anyone else come across this before?

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • grayracer513

Posted October 06, 2014 - 06:07 AM

#2

If it is actually locking up, the rod bearing is a prime suspect.  The cage loosens up or breaks and lets the rollers skew out of line, binding up the rod.







Related Content

Forums
Photo

First Hare scramble tips by dhend8


Dirt Bike   General Dirt Bike Forums   General Dirt Bike Discussion
  • Hot  33 replies
Forums
Photo

100 hrs on 2014 yz450f, shim valves or replace them? by ttr230rider6


Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • Hot  79 replies
Forums
Photo

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


Dirt Bike   Make / Model Specific   Yamaha   Yamaha 2-Stroke
  • 9 replies
Wiki
WR Camshaft Swap Info - last post by jamesm113

WR Camshaft Swap Info


Articles
  • 0 replies
Forums
Photo

Michigan Motocross Tires by 288yz450


Dirt Bike   Dirt Bike Regional Discussion   North
  • 1 reply
 
x

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.