LiftMaster LA400 LA400 Push to Open Addendum Manual - Page 1

1. Assemble post bracket assembly by placing push-to-open bracket between the two post brackets as shown. Insert 3/8" hex bolt through middle hole. Fasten with lock washer, flat washer and nut (Figure 1). 2. With gate in open position (90˚ from closed position), clamp bracket assembly to post using C clamp. 3. Rotate the push-to-open bracket or the entire post bracket assembly to obtain desired dimensions (Figure 2). 4. Once dimensions are obtained, insert 5/16" hex bolt and fasten with flat washer, lock washer, and nut to secure pivot point. 5. Mount operator to bracket assembly clamped to post by inserting push-to-open bracket into slot on motor side of operator. Insert pin and hairpin clips to secure (Figure 3). 6. Mount gate bracket to actuator side of operator with pin and hairpin clips (Figure 3). Figure 1 Figure 2 Push-to-Open Kit Model 50-1950 3/8" Hex Bolt Post Bracket Push-to-Open Bracket Post Bracket 3/8" Flat Washer 3/8" Lock Washer 3/8" Nut Center of Gate Hinge Figure 3 Pin Hex Bolt Post Bracket Push-to-Open Bracket Flat Washer Lock Washer Nut Hairpin Clip 5/16" Hex Bolt 7-3/4" 90° 7-3/4" Special Post Pivot Bracket for Push-to-Open Installation Pin Gate Bracket Hairpin Clip