User guide

ARM ATTACHMENT

For easier access during installation, the top cover of the unit

may be opened by removing the two wing nuts from underneath,

inside the cabinet.

MODEL BG770: STANDARD ARM

Attach arm to the arm hub flange (Figure 5).

MODEL BG770: OPTIONAL ARM

Attach arm to the arm hub flange (Figure 6).

When following the procedure below, the motor belt will turn

and the drive shaft will move during some of the steps. Keep

hands and tools out of the gate cabinet and away from the

belt and drive shaft or SERIOUS INJURY may result. Be sure

to DISCONNECT power while installing the arm attachment.

WARNING

CAUTION

WARNING

INSTALLATION

Gate Arm

Hub Flange

Hex Bolt

1/2"-13 x 2-1/4"

Lock Washer and

1/2"-13 Hex Nut

Figure 5

(4) Hex Bolts

Threaded Rod

See Detail A

See Detail B

Hex Bolt

Flat Washer

Hex Nut

Flat Washer

Threaded Spacer

Flat Washer

Hex Bolt

(2) Flat Washers

Hex Nut

Hex Bolt

(2) Flat Washers

Hex Nut

Extension Arm

Allenhead Screw

Lift Arm

Figure 6