'02 WR426 electrical issue

10 replies to this topic
  • Strick

Posted February 19, 2004 - 05:18 AM


Well, I am riding along and suddenly nothing. Bike is dies like someone pulled the plug and won't re-start. I immediately hack off the kill switch, after checking the spark plug cap, nothing. I have checked the connections everywhere and have not found anything disconnected or melted.

This WR is stripped of lights and battery, has YZ everything including the CDI.

Has anyone had a similar problem? I have zero spark to the plug. I have yet to head inside to look at the magneto/stator. I thought I would ask here for advice first.


  • 5spoke

Posted February 19, 2004 - 05:32 AM


Either the ign coil went bad, stator loose connection or fried, CDI down, or you have a short to ground somewhere. I'd pull the sparkplug and check that you have a spark. If not check for a short to the bikes frame somwhere. Also disconnect the kill sw in front of the handlebars. Start with the basics and then once eliminating possible faults check the higher $ stuff.

  • Strick

Posted February 19, 2004 - 06:20 AM


NO Spark, I removed the kill switch altogether.

Are Bad coils something common. I have never had one go before (on last 10 bikes).

  • 5spoke

Posted February 19, 2004 - 07:07 AM


Unplug the coil and see if you get any juice on that connector. While trying to kick start.

Do you still have the bat. and the reg/rec? You said it was completely YZ. What was changed when converting it to YZ, this might be the key to getting to the bottom of this?

  • Strick

Posted February 19, 2004 - 10:22 AM


The regulator is still on the bike. I have owned the bike for 7 months or so, and it has been a terrific bike. This was just a sudden occurence. I have not changed anything electrical on the bike for months. The last thing I did was remove the neutral switch and capped it with the Ty Davis Cap, and that did not create and disturbance.

I am wondering if I should by a tester or just start replacing parts? That is once I check the magneto/stator connectins.

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  • Strick

Posted February 19, 2004 - 07:39 PM


Well, based on my resistance readings, I think the magneto/stator is toast.

Anyone heard of this happening on these bikes before?

I am just hoping my readings are right --> low to non-existent. The coil readings are fine.

  • 5spoke

Posted February 20, 2004 - 04:50 AM


How did you measure the stator? If you are getting a low resistance or close to 0 ohm, it's probably fine. If you get an open circuit I would be worried.

Again how are you testing it? Did you disconnect the regulator while testing?

  • Strick

Posted February 22, 2004 - 03:25 PM


I spec'd out the circuit with an Ohm meter, as per the manual. My coil readings were right on, but the stator was no where close.

I did not disconnect the regulator. I do not believe the manual advised such. Once I get the problem fixed, is it O.K. to remove the regulator alogether?

  • Strick

Posted February 24, 2004 - 02:26 PM


Well I just Found out that I Lost more than just my stator. I chipped a gear somewhere in the case and it grenaded my Flywheel/stator on the inside. It literally looks like someone shot the magneto with a gun. $700-$800 to fix. OUCH!

  • galant2nr

Posted February 24, 2004 - 05:35 PM


Wow I am sorry to hear that. I heard you died on Sunday last weekend but didn't know what happened. I guess you will be racing orange this weekend?

See ya on Sunday hopefully.

  • Strick

Posted February 24, 2004 - 06:58 PM


Yep, me and the '02 453SX. Now that the suspension is dialed I should be o.k., but I would rather be racing the 426.


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