'01-02 WR/YZ stator crossover

[jeepertom]

Not sure what I'm missing.

 

I bought a '01 WR250F that had a YZ stator with no light circuit. The bike ran fine, but I want the light.

I bought a WR stator and flywheel from Ebay and checked the coils against my service manual, all within specifications.

When I installed the WR stator I got no spark. No output from the CDI (checked with a Fluke 99b scope).

I put the old YZ stator back into the WR and she fired on the first kick.

The WR stator coils still check out good.

 

Can the WR/YZ stators be swapped around?

 

Is their a difference between WR/YZ CDI or harness?

 

Whats going on? Where should I go from here?

[RickyStator]

Sounds like you are missing the WR CDI box, the YZ stator wont work on there unless you had the YZ box to go along with the stator. 

[jeepertom]

Okay, but why? What's different about the wiring? The connectors ate exactly the same. I have the WR wiring diagram. Is their a differences? Someone on here has to know.

[RickyStator]

Okay, but why? What's different about the wiring? The connectors ate exactly the same. I have the WR wiring diagram. Is their a differences? Someone on here has to know.

Each box is slightly different in one respect to match the stator.

[jeepertom]

In Search Of 01-02 YZ250F wiring diagram. Specifically the stator/CDI wiring. I have the 01-02 WR250F but believe their is a difference with a floating center tap. I can not get the WR stator to work with the YZ CDI.

[William1]

http://www.yamaha-motor.eu/eu/services/owner-manuals/index.aspx

[Gregmiles]