What was found
"DURING PUSHBACK AFTER SELECTING RIGHT ENGINE TO GROUND, R ENG STARTER EICAS MESSAGE APPEARED WITH NO ENGINE ROTATION A/C RETURNED TO GATE AND MTX GROUNDED AC . DEFERRED THE START VALVE FOR DEPARTURE IAW MEL ABX-80-00-2-1 . RETUNED AC TO SERVICE . AIR CRAFT DEPARTED , NEXT LEG REMOVED AND REPLACED R/H ENGINE STARTER CONTROL VALVE IAW B767 AMM 80-11-02. OPS CHECK AND LEAK CHECK GOOD. NO REACTIVATION PROCEDURE APPLIED. PLACARD REMOVED. A/C RELEASED ETOPS 180. REF LP 38918-96/1"