WR400F valve clearance tolerances.


6 replies to this topic
  • Fletch 2

Posted January 29, 2008 - 12:54 AM

#1

Hullo,
could someone please give me the valve clearance tolerances for the 2000 model WR400, i dont have the yamaha manual to look these up so any help would be great.
Cheers,
Fletch.

  • creeky

Posted January 29, 2008 - 05:18 AM

#2

'00 WR400F clearances for cold engine. Intake: .02mm (.0059-.0079") Exhaust: .03mm (.0098-.0118"). If you are going to do a valve adjust, I strongly recommend that you get hold of a service manual, otherwise you are working in the dark.

  • byggd

Posted January 29, 2008 - 05:22 AM

#3

Fletch. Here is a site from down under where you can get the manual for free! :busted:
http://www.yamahaown...ook.com.au/?r=0

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  • matt4x4

Posted January 29, 2008 - 05:39 AM

#4

you can get your manual downloaded from here
http://www.yamahaown...GS-28199-30.pdf

Intake:0.15-0.20mm
Exhaust:0.25-0.30mm

Creeky - good call I think your imperial ones are good, but the metric are a couple of decimals off, they don't even make shims to those tolerances

  • SXP

Posted January 29, 2008 - 06:37 AM

#5

The metric portion of the below quote is NOT right; however, the english part is correct:

'00 WR400F clearances for cold engine. Intake: .02mm (.0059-.0079") Exhaust: .03mm (.0098-.0118"). If you are going to do a valve adjust, I strongly recommend that you get hold of a service manual, otherwise you are working in the dark.


This is the correct metric spec:thumbsup:

Intake:0.15-0.20mm
Exhaust:0.25-0.30mm



  • creeky

Posted January 29, 2008 - 11:17 AM

#6

Intake:0.15-0.20mm
Exhaust:0.25-0.30mm
Creeky - good call I think your imperial ones are good, but the metric are a couple of decimals off, they don't even make shims to those tolerances



You are absolutely correct MATT4x4 and SXP, don't know how that extra zero got in there, senior moment I guess. Aplogies to all.

  • Fletch 2

Posted January 29, 2008 - 11:39 PM

#7

Thanks for that. Cheers.




 
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