2004...WR450....Jetting

My buddy has a 2004 wr450. it has a CRD pipe, and is ridden at sea level in michigan. its running lean from bottom to top. any suggestions, for jetting specs. ?

The JD jetting kit sold here on TT, it makes an outstanding motor run pretty close to how it should (with the other free mods). No guess work just follow the direction.

175 main , JD Blue needle in clip #5 , 48 pilot jet, 2 turns on the fuel screw, 72 starter jet, 40 leak jet, should work well for winter riding in Michigan. :cry:

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