As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS ON THE GROUND IN SFO. THE NR 2 ENGINE WOULD NOT SHUT DOWN USING START LEVEL. THE FIRE HANDLE WAS PULLED AND ENGINE WAS SHUT DOWN. REMOVED AND REPLACED SOLENOID SHUT-OFF VALVE AS PER M/M 73-35-01-4-1. ALSO, REMOVED AND REPLACED FUEL SHUT CLOSE RELAY. ALL CHECKS GOOD. RAN NR 2 ENGINE PER JRH MD-1, ALL CHECKS GOOD.