98 yz 400f float level

2 replies to this topic
  • yamaha mark

Posted January 17, 2010 - 01:47 AM


hi all.ive just stripped down my carby cleaned everything and put it all back together and everything is sweet except for the float level.does anyone know what the float level should be set at? and also any info on the pilot screw how many turns out should it be.


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  • grayracer513

Posted January 17, 2010 - 09:08 AM


Float height is 9mm. It's listed in the manual:

If it was me, I'd download a 400 manual for the specs and a 426 manual for the better diagrams.

Ball park pilot setting is also listed in the manual as well as here:

See also:

  • yamaha mark

Posted January 18, 2010 - 01:20 AM


i've got it sorted now.its going really well,better than it ever has.thanks for the help anyway.

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