Step 5: Attach Bracket To Arm; Step 6: Position Operator On Gate - Chamberlain LA400 Installation And Operation Manual

NOTE: All the illustrations on the following pages display a typical Left-Hand Gate installation.
Step 5: Attach Brackets to Arm
Attach gate post bracket to arm using hex bolt and lock nut with nylon insert. Attach gate bracket to arm using pin and
hairpin clip.
Gate Post
Bracket

Step 6: Position Operator on Gate

The gate post bracket assembly can be mounted several places on the gate post. Refer to the illustrations on page 10
for mounting options.
Place opener arm against gate post at the desired vertical position and temporarily secure Gate Post bracket with
C-clamp. Arm must be level.
Open gate to desired open position (no greater than 100°) and hold arm against gate. Mark mounting holes on gate
for reference.
Temporarily secure the gate bracket using a C-clamp.
Hex Bolt
Hairpin
Clip
Hairpin
Clip
14
Pin
Gate Bracket