What was found
AIRCRAFT WAS GROUNDED: PILOT REJECTED TAKE OFF DUE TO TAKE OFF CONFIG WARNING WHEN THROTTLES PUSHED UP. FLAPS SET AT 15, PARKING BRAKE OFF, SPD BRAKE HANDLE STOWED. ABORTED T/O LESS THAN 10 KTS. MAINTENANCE ACCOMPLISHED FIM TASK 27-62-00 SPEED BRAKE LEVER CHECK AND TAKE-OFF WARNING CONFIGURATION, FOUND SPEED BRAKE HANDLE NOT GOING INTO DETENT. EWIS REMOVED FROM UNDERNEATH PEDESTAL. TAKE OFF WARNING CONFIGURATION CHECK OK IAW AMM 31-51-02.