LiftMaster LA400 LA400 Push to Open Addendum Manual

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

Figure 3

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

5/16" Hex Bolt

Special Post Pivot Bracket for

Push-to-Open Installation

7-3/4"

7-3/4"

90°

Pin

Hex Bolt

Post Bracket

Push-to-Open Bracket

Lock Washer

Nut

Hairpin Clip

Hairpin Clip

Pin

Gate Bracket

Flat Washer