As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING GROUND RUN THE PILOT REPORTED AN UNRESPONSIVE THROTTLE. THE ACFT WAS GROUNDED AND BROUGHT INTO THE SHOP FOR INSPECTION. THE THROTTLE CABLE WAS FOUND BROKEN, 4" UP THE CABLE FROM FUEL THROTTLE ATTACH ROD. RECOMMEND DISCONNECTING THE THROTTLE CABEL FROM THE FUEL SERVO AND CHECKING FOR FREEDOM OF MOVEMENT EVERY 100 HRS.