LiftMaster 81602MC Owners Manual - English French Spanish - Page 14
Position the Garage Door Opener
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Installation 4 Position the Garage Door Opener To prevent damage to garage door, rest garage door opener rail on 2x4 placed on top section of door. 1. Remove the packing material and lift the garage door opener onto a ladder. 2. Fully open the door and place a 2x4 (laid flat) under the rail. A 2x4 is ideal for setting the distance between the rail and the door. If the ladder is not tall enough you will need help at this point. If the door hits the trolley when it is raised, pull the trolley release arm down to disconnect the inner and outer trolley. Slide the outer trolley toward the garage door opener. The trolley can remain disconnected until instructed. FOR T-RAIL Connected Disconnected FOR SQUARE RAIL Connected Disconnected 2x4 One-piece door without tracks 2x4 All other door types 14
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