What was found
RETURN TO FIELD. EPR WOULD NOT GO ABOVE 1.44 ON CLB CREW SAID THERE FELT TENSION ON THE TAKE OF POSITION ON THE LEFT THRUST HANDLE AND WHEN THE PILOT REMOVED HIS HAND THE THROTTLE PUSHED BACK ABOUT A KNOB, WHEN CHECKED HANDLE FELT TENSION ABOUT 3/4 OF THE WAY FORWARD AND WILL NOT GO TO FULL THROTTLE FOUND LOWER CONTROL BOX CABLE TEETH SKIPPED ON FFG. REPLACED LEFT ENGINE FFG LOWER CONTROL BOX. OPS AND RIG CHECK GOOD. PARTS USED: 19-7611-9-0003,QTY :1 ADD EMP:U285099 ROTABLE PARTS CHANGE WAS INDICATED - TT # 1309287 SN OFF 1366 BOX, CONTROL LI OFF 19-7611-9-0003 1366 ON 19-7611-9-0003 1717 RECOMMEND TO PERFORM TEST #13 TAKE-OFF POWER TEST. AMM 71-00-00-715-223-R03 TO CONFIRM TAKE-OFF EPR IS MET. PERFORMED TEST #13 TAKE-OFF POWER TEST. AMM 71-00-00-715-223-R03 MADE TAKE-OFF EPR AND LEVERS MATCHED.