Before you start – Mighty Mule FM143 User Manual

Page 2

Be sure you have all the parts:

A - Lock with 20' of low voltage wire

B - Lock Receiver

C - Clevis Pin

D - Locking Cap

E - Lock Board Battery Lead Wires

F - White Wire

(motor lead to lock board)

G - Lock Control Board

H - 2 Double Spade Tongue terminals

I - 6 nylon cable ties

J - Wire Connector

K - Lock Keys (for manual release)

L - Lock Decal

What else do you need?

Mounting hardware is not included. Read these instructions completely and review the installation examples to

determine the mounting hardware required for your application.

NOTE: The GTO Lock is designed to use mounting hardware up to

" in diameter. For a more secure installation,

use lock washers and lock nuts on all mounting hardware.

For most IRON or ALUMINUM TUBE gates you will need:

Carriage bolts, washers, and nuts for the lock and receiver. (see Illustration B, page 3)

For most CHAIN LINK gates you will need:

U-Bolts, saddles or carriage bolts, washers and nuts for the lock.

Bolts, washers, and nuts for the receiver. (see Illustration C, page 3)

The installation has two parts:

(1) Mounting The Lock and Lock Receiver

(2) Connecting the Control Boards
Once you have the necessary mounting hardware, you can begin the installation.

Before You Start...

For the GTO Automatic Gate Lock to work properly, the gate must close ﬁrmly and engage the lock catch against

the lock receiver. Achieving optimal closure may require slight adjustments to the gate opener settings.
Installing the lock with the Mighty Mule

E-Z Gate

Opener may require slight movement of the stroke

adjustment and changes to the obstruction sensitivity. See Setting the Gate Closed Position in your Mighty

Mule Installation Manual

for information on these adjustments.

Installing the lock with a GTO/PRO gate opener may require slight movement of the stroke adjustment and

changes to the obstruction sensitivity (see your GTO/PRO Installation Manual for information on these

adjustments).

If you are installing the lock on a Push-to-Open gate (gate opens out), the lock must be installed on the outside

of the gate. Depending upon the installation, the gate post may need to be "pocketed" to accommodate the lock

receiver. Contact the GTO Technical Service Department at (850) 575-4144 for assistance.

AUTOMATIC

GATE LOCK