As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE THROTTLE CABLE BROKE WHERE THE HARD TUBE TO CABLE JUNCTION IS RIGHT BEHIND THE FIXED CABLE BRACKET. IT BROKE INTERNALLY. IT IS BELIEVED, THE SHAKING OF THE ENGINE MOUNT ON STARTUP AND SHUTDOWN COULD HAVE CAUSED THE CABLE TO BREAK, SINCE THE MOUNT IS FIXED AND THE ENGINE IS BETWEEN THE CLAMP AND WHERE IT IS HOOKED TO THE CARB, WILL NOT ALLOW MUCH VIBRATION WITHOUT STRAINING SOMETHING.