As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING AN 800 HOUR INSPECTION, FOUND NR 1 ENGINE FUEL DEGRADE LIGHT WOULD NOT ILLUMINATE WHEN ENGINE PUT IN MANUAL MODE AND TWIST GRIP WAS ENGAGED. REMOVED AND REPLACED FCU 3 TIMES BEFORE TEST WOULD PASS. FUEL CONTROL P/N 0319858090 S/N ANR855, P/N 0319858240 S/N 578B BOTH FAILED THE FUNCTIONAL TEST. INSTALLED P/N 031985820 S/N 658B AND PROBLEM WAS CURED.