Please Read This First - Mighty Mule 500 UL325 SERIES Installation Manual

Thank you for purchasing a Mighty Mule® E-Z
Gate Opener—GTO's "do-it-yourself" automatic
gate opener! When correctly installed and properly
used, your Mighty Mule® E-Z Gate Opener will give
you many years of reliable service. Please read the
following information and watch the enclosed video to
ensure you have the correct system for your particular
needs. Furthermore, this manual and the DVD will
enable you to properly install your Mighty Mule® E-Z
Gate Opener.
The Mighty Mule® E-Z Gate Opener is designed
for installation on a pull-to-open single leaf gate
(gates that open into the property). By purchasing
an accessory bracket, the Mighty Mule® E-Z Gate
Opener can accommodate a push-to-open single leaf
gate (gates that open out from the property). The gate
must not exceed 18 feet in length and weigh more than
350 pounds or exceed 8 feet in length and weigh more
than 850 pounds (please see Technical Specifications
on page 9). The Mighty Mule® E-Z Gate Opener can
be used on vinyl, aluminum, chain link, farm tube,
and wrought iron gates. Use on solid (wood) gates
is not recommended. Solid surface gates have a high
resistance to the wind. If the wind is strong enough,
the opener will obstruct and stop.
The Mighty Mule® E-Z Gate Opener accommodates
extra transmitters, digital keypads, solar panels, push
buttons, automatic gate locks, and other access control
products. These optional accessories (see the enclosed
Mighty Mule® Accessory Catalog) are available
at most stores. Your store should be able to special
order any accessory not in stock. If your store cannot
BEFORE YOU BEGIN TO INSTALL YOUR AUTOMATIC GATE OPENER:
watch the enclosed video and read these instructions carefully and completely
to become familiar with all parts and installation steps. The video is only designed as an
overview of the installation procedure. You must read the installation manual for detailed
instructions on gate opener safety and proper use of the gate opener.

Please Read This First!

E-Z GATE OPENERS
special order accessories, please call the GTO Sales
Department (800-543-GATE).
The Mighty Mule® E-Z Gate Opener features
adjustable obstruction sensing. This safety feature
makes the gate stop and reverse direction within 2
seconds when it comes in contact with an obstruction.
MIN is the factory setting; meaning the gate will exert
the minimum force on an obstruction before it stops
and reverses direction.
The Mighty Mule® E-Z Gate Opener also has an
adjustable auto-close feature. After the gate reaches the
fully open position, it can be set to remain open up to
120 seconds before automatically closing. Pressing the
transmitter button at any time after the gate opens fully
will cause it to close immediately. OFF is the factory
setting; meaning the gate will stay open until you press
the transmitter (or keypad, etc.) again.
PLEASE NOTE—If your application requires any of
the following:
• Swing gates longer than 18 feet or weighing
more than 850 pounds
• Slide gates
• Heavy duty or commercial uses
• Professional installation
Go to gtoinc.com for a dealer or retailer near you or
call GTO at (800) 543-GATE [4283] or (850) 575-
0176 for information about our GTO/PRO professional
line of gate openers and accessories. Our Sales
Department will be glad to give you the name and
phone number of a GTO/PRO dealer near you
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