all you master mechanics 2004 yz 450f yalves

1 reply to this topic
  • fastleo

Posted November 20, 2007 - 03:24 PM


i need to adjust the valves on my bike and i have never done it before, what do i need to do it shims tools , how long will it take?

or should i take it to the bike shop for 100.00



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

Posted November 20, 2007 - 03:58 PM


The first thing to do is to check the clearances and find out if there's any more work than that that needs to be done.

Ordinary automotive feeler gauges will work. If you don't have a set that's marked with metric equivalent sizes, you can pick up a set at a car parts store for $5. Use a .004" and a .006" on the intakes, and a .008" and a .010" on the exhausts in place of the .10-.15mm and .20-.25mm sizes. Use them as "go, no go" gauges (for example, if the .004 fits, and the .006 doesn't, the intakes are good.

Don't be surprised if it doesn't need anything. If it does, take a look at this:

Need a manual?

Related Content


2016 YZ450 by CaptainKnobby

Dirt Bike   Dirt Bike Technical Forums   Suspension
  • Hot  59 replies

Yamaha YZ450F 2017 by Chris.GVS

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

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

Megabomb Fitment by 288yz450

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

First Hare scramble tips by dhend8

Dirt Bike   General Dirt Bike Forums   General Dirt Bike Discussion
  • Hot  33 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.