300/440/550 Wont start after playing with timing

Posting this for my buddy to see if anyone has any ideas.

He advanced the timing (rotated the stator inside of the flywheel) and now is getting no spark.

Ski was running fine prior to this. Returned timing to where it was and still no spark.

Any idea what might have happened to cause this? Even with the timing advanced, it should atleast produce a spark.

Thanks
 
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