Timing yz400f

4 replies to this topic
  • ttam27kov

Posted December 04, 2008 - 07:10 AM


I just had to take off the top end bc a peice of the float valve on the carb broke off and got stuck on the top of the piston, luckily there was no valve or piston damage. I removed the peice of metal and now ready to do the timing, any tips or suggestions?

  • grayracer513

Posted December 04, 2008 - 07:26 AM


Download a manual:




If you can't get the 400 manual to download for some reason, use any year 426. The process is identical.

Don't rotate the engine more than a few degrees until the tensioner is installed.

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  • Michael Cahill

Posted December 04, 2008 - 08:05 PM


how did a piece of your float valve make it all the way to the piston? :thumbsup:

  • grayracer513

Posted December 04, 2008 - 11:24 PM


I'm guessing he means the floating plate on the back of the slide.

  • Michael Cahill

Posted December 06, 2008 - 06:30 PM


ah, i see that makes sense.
just double checkin :thumbsup:

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