Zaro77

And something else, check the 12 V power supply to the CDI. As you see in the wiring diagram, the orange/white wire going to the CDI should have +12V with the ignition ON.

OK. So, as Mike suggested, you must check the magneto. But you will need a multimeter. Here, in the attached file you will find the specs for the measurements. ATV Section 5.pdf

It is possible the spark plug cap to be faulty. I would perform spark check without spark plug cap - directly from the HV wire. Whish you success. Zaro

How did you check the CDI? Mike is right, try with new plug first. Zaro

Dear friends, I am looking for a 2009 Scrambler 500 manual. I can see it in the list, but I have no acsess. Could you help? Thanks

Hi, friends. Great thanks for the posts with the manuals. However I can not succeed to download anything. I need a 2007 Scrambler 500 wiring diagram I tried the link in page one of the post written by GatorHunter, but nothing. Could you help, please? best regards