Removing exhaust cam / compression release


4 replies to this topic
  • Hoosier-Daddy

Posted March 27, 2014 - 08:54 AM

#1

2009 yz450
How do you remove the compression release as stated in the common thread for valve adjustment? Is this step really required? My manual does not mention it. I am attempting to adjust my valves but I can't get exhaust cam out by hand. I figured I would reach out for advice before doing something I would regret.

  • Zakrad_u

Posted March 27, 2014 - 09:23 AM

#2

2009 yz450
How do you remove the compression release as stated in the common thread for valve adjustment? Is this step really required? My manual does not mention it. I am attempting to adjust my valves but I can't get exhaust cam out by hand. I figured I would reach out for advice before doing something I would regret.

 

I'm in the process of doing my valves now and I was pretty easily able to get the cams out after removing the cam chain tensioner.



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

Posted March 27, 2014 - 10:47 AM

#3

2009 yz450
How do you remove the compression release as stated in the common thread for valve adjustment? Is this step really required? My manual does not mention it. I am attempting to adjust my valves but I can't get exhaust cam out by hand. I figured I would reach out for advice before doing something I would regret.

 

There is no compression release to remove on a YZ450.  The writeup was originally for a 426.  Otherwise, the process doesn't change.



  • Hoosier-Daddy

Posted March 27, 2014 - 11:22 AM

#4

There is no compression release to remove on a YZ450. The writeup was originally for a 426. Otherwise, the process doesn't change.

Thanks. I got the cam out. Had to grab it like I meant it. Just didnt want to force it and break something. I thought the auto decompression was internal the exhaust cam.

  • grayracer513

Posted March 27, 2014 - 11:30 AM

#5

 I thought the auto decompression was internal the exhaust cam.

 

It is, but you don't need to mess with it in any way.  The manual compression release in the older engines overhangs the right side bucket, so it has to be backed out in order to adjust that one valve.







Related Content

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

2016 YZ450 by CaptainKnobby


Dirt Bike   Dirt Bike Technical Forums   Suspension
  • Hot  59 replies
Forums
Photo

BIGBORE FOR YZ450F 2006? by Taattie94


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

Megabomb Fitment by 288yz450


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