'98 WR400 valve lash specs needed

Hi. I did a search here looking for valve lash specs and the only info i could find were for '01 426 and 450 valve lash specs that were .004-.006" intakes, and .008-.010" exhaust. I checked my clearances last night on a stone cold engine and got:

.006-.007" intake and .009" on the exhausts.

Just to make sure there wasn't a different spec for the older '98 400 bikes, i called a dealer and they toold me .006-.008" on the intakes and .010-.012" on the exhausts.

Is this correct?

Bike used to be real hard to start a few years back and had some skipping issues... so i stopped riding the biker and then I basically moved and rode the bike only a handful of times since and the thing runs like normal now (or real close to it).

I know.... get a FSM!

The dealer gave you the correct clearance.

ah... so the 426 and 450 had tighter valve lash clearances?

Do you think my exhaust being at .009" instead of .010-.012 is a major concern?


asking help for my WR400 - 1998 as Yours, a Guy's here in the forum, give me this link to download the instruction manual for Our bike


Download the manual.

is very usefull.



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