Mighty Mule FM143 - Manual (Page 3)

2
Illustration A
Installing The Gate Lock
Receiver pin hole and lock slot must line up.
Check alignment with pin out of receiver.
Lock and receiver must be level
and aligned with opener.
Step 1: With the gate in the closed position, determine the best location for the lock and lock receiver. The lock
and receiver must be level and aligned with the opener. Also, the lock should have a solid surface or
cross member to provide stability.
Step 2: Clamp receiver and lock together (with receiver pin hole and lock slot aligned) against the gate post,
mark their positions to drill receiver holes (see Illustration B and C, page 3). The receiver must be
mounted with carriage bolts, not U-bolts, to allow lock to seat properly. Fasten the receiver to the gate
post.
Step 3: Recheck the lock's position and alignment, then mark its position for drilling holes. Drill the holes on
gate supports through the slots in the lock bracket. U-bolts and saddles can be used to mount the lock
on chain link gate supports. Secure the lock to the gate. Install clevis pin and locking cap by placing
clevis pin through slots in lock receiver and hammering the clevis pin into the locking cap (see Illustra-
tion D ), secure the lock bracket and check the alignment again.
NOTE: The Automatic Gate Lock can be installed on single and dual gate systems. Use the appropiate
instructions for the system you have - SINGLE GATE (below) or DUAL GATES (page 4).
Disconnect gate opener by removing hairpin clip and clevis pin from the gate bracket end of the opener.
Disconnecting the opener will allow the gate to swing freely during installation of the gate lock.
Single Gate Installation