As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER PUSH BACK ATTEMPED TO START ENG NR 2 WITH SWITCH IN GROUND NO N2 OR N1 OR OTHER IND THAT STARTER WAS ROTATING ENG. RAN ENGINE FOUND START VALVE INOPERATIVE, REPLACED START VALVE ON NR 2 ENGINE REF AMM 80-11-03. GROUND VERIFICATION CHECK SUCCESSFUL ACFT OK FOR SERVICE.