What was found
(CAN) LANDING GEAR WOULD NOT RETRACT, RETURN, LANDED AND TAXIED TO GATE WITHOUT INCIDENT. NOT AN OVERWEIGHT LANDING. L/G CONTROL LEVER LOCKED IN THE DOWN POSITION DURING TAKEOFF TROUBLESHOOTING CARRIED OUT IAW FIM 32-33-00-810-802-A, NFF. ALL POSSIBLE CAUSES (C) CARRIED OUT NR 1-6. ALSO CARRIED OUT FIM TASK 32-33-00-810-801-A, NFF. LANDING GEAR LEVER REPLACED IAW MOC REQUIRES AMM TASK 32-33-01, PB 401.