Hey all I have an 07 WR450 and I recently was having problems with starting so I started diagnosing electrical components and found out my stator and IGN coil were bad, I've got a ricky stator replacement, (new) Stock yamaha Ign coil, and still no spark. I've double tested the old one's and they are def. bad. This is the order it went in. I couldn't get it to start so I pulled my coil off and it had spark, the light was lighting up and everything seemed good. stuck it back in and cranked it over a million times (it seemed like it) and still no luck. So I started testing things. I pulled the coil off and tested it like the manual show's it was way below the proper numbers. Setting it aside I checked out my stator per the manual's instructions and it was bad too. So now I have replaced both of those and I'm still not getting spark. I unhooked the kill switch, and I have tried the main ign switch both on, off, plugged in, and unplugged. Nothing. Not sure but I'm guessing that it is the CDI unit. Note: This is all kick starting on a dead battery I have deleted the electric start.