LiftMaster LA400 LA400 Manual - Page 17

INSTALLATION » TEST GATE TRAVEL + SECURE POST BRACKET TO GATE POST TEST GATE TRAVEL NOTE: If gate does not open and close completely adjust the position of the 1 gate bracket and mark new mounting holes. 1 Manually open and close the gate. 2 Ensure that the operator does not bind against the Pull-to-Open bracket. 3 Ensure that the piston does not bottom out. 2 1/2" (1.3 cm) 3 Do not allow piston to fully extend or fully retract. 1/2" (1.3 cm) SECURE POST BRACKET TO GATE POST The gate operator (arm) must be level. 1 Mark holes for the post bracket. Remove the clamp and the operator, set aside. 1 2 Drill adequate holes in the gate post. 3 Secure the post bracket to the gate post using hardware. Flat Washers 3 Hex Nuts Lock Washers 16 2 Carriage Bolts Welder (Optional)