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yz400f or wr400f???


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I'd say a Wr400....I had one too and I striped it down to a YZ spec. Check the pigtail clip below the right side of the gas tank, if it has a 3 wires and one of them is grey.....it is a WR.

If you somehow determine it is a WR then clip the grey wire and tape it off to give YZ mapping along with retarding one tooth on the exhaust cam to give it some zing! The time mark on the cam should be at the 1 oclock position.

Also, a sure sign of a WR spec is mushy suspension if it was bone stock.

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