03 YZ450 valve clearences check.


4 replies to this topic
  • radio592

Posted August 23, 2007 - 06:50 PM

#1

Hey guys, I am going to check my buddies valves on his 450 because he does not have the correct tools :bonk: How ever, I do not have a YZ, Im a KX guy but have absolutely nothing against Yamaha. In fact, I would have gotten the YZ but got a great deal on the kx. Back to my question, what are the correct valve clearances for both intake and exhaust valves on an 03 450? Thanks in advance. :ride: :thumbsup:

  • grayracer513

Posted August 23, 2007 - 09:12 PM

#2

Intakes: .10 -.15mm
Exhausts: .20 - .25mm

Downloadable manuals:

http://www.yamahaown...ook.com.au/?r=0

How To:

http://motoman393.th...ech/valves.html

Important!: If you adjust, retorque the caps carefully, evenly, and in steps.

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • davidl9999

Posted August 23, 2007 - 09:19 PM

#3

:prof: what he said

My 2c:
If you trim the feeler gauges (if they're too wide), be sure not to check with the trimmed edge.

  • grayracer513

Posted August 23, 2007 - 09:31 PM

#4

Standard feelers are not too wide for the big YZF, only for the center intake of the 250F.

  • davidl9999

Posted August 24, 2007 - 09:25 AM

#5

hehe, I spend too much time in the 250F forum... :bonk:





Related Content

Forums
Photo
Supercross

Wilson the Blue Privateer by jetfuel


Dirt Bike   Special Interest Forums   Pro Racing
  • Hot  50 replies
Reviews

Yamaha YZ450F 2017 by Chris.GVS


Yamaha YZ450F 2017
  • * * * * *
  • 1 review
  • Last review by Tommyk_55
  • On January 15, 2017
Wiki
WR Camshaft Swap Info - last post by jamesm113

WR Camshaft Swap Info


Articles
  • 0 replies
Forums
Photo

Megabomb Fitment by 288yz450


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

05 yz450f not fast enough by RedeyeYZ


Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • Hot  38 replies
 
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.