Mighty Mule 200 E-Z GATE OPENER UL325 SERIES User manual

©2008 GTO, Inc.
R200INST
rev- 08/06/08
Installation Manual for the
This product meets and exceeds the requirements of UL 325, the standard which regulates gate opener safety,
as established and made effective March 1, 2000, by Underwriters Laboratories Inc.
WARNING!
This equipment is similar to other gate or door equipment and meets or exceeds
Underwriters Laboratory Standard 325 (UL 325). However, gate equipment has
hazards associated with its use and therefore by installing this product the installer
and user accept full responsibility for following and noting the installation and
safety instructions. Failure to follow installation and safety instructions can result
in hazards developing due to improper assembly. You agree to properly install this
product and that if you fail to do so GTO, Inc. shall in no event be liable for direct,
indirect, incidental, special or consequential damages or loss of profits whether
based in contract tort or any other legal theory during the course of the warranty
or at any time thereafter. The installer and/or user agree to assume responsibility
for all liability and use of this product releasing GTO, Inc. from any and all liability.
If you are not in agreement with this disclaimer or do not feel capable of properly
following all installation and safety instructions you may return this product for full
replacement value.
READ ALL INSTRUCTIONS CAREFULLY AND COMPLETELY before attempting to
install and use this automatic gate opener. This gate opener produces a high level
of force. Stay clear of the unit while it is operating and exercise caution at all times.
All automatic gate openers are intended for use on vehicular gates only.
GTO Sales: (800) 543-GATE (4283) or [phone] • Fax [phone] or
GTO Technical Service [phone] or [phone]
For 24 hour/day, 7 day/week Technical Service visit http://support.gtoinc.com/support/troubleshooter.aspx
UL325 SERIES
200
®
E-Z GATE OPENER
For more information on Mighty Mule’s full line of Automatic Gate Openers and Access Controls visit our website at www.mightymule.com

VEHICULAR GATE OPENER CLASS CATEGORIES
Residential Vehicular Gate Opener-Class I: A vehicular gate opener (or system) intended for use in a
home of one-to-four single family dwelling, or a garage or parking area associated therewith.
Commercial/General Access Vehicular Gate Opener-Class II: A vehicular gate opener (or system)
intended for use in a commercial location or building such as a multifamily housing unit (five or more
single family units), hotel, garages, retail store, or other building servicing the general public.
Industrial/Limited Access Vehicular Gate Opener–Class III: A vehicular gate opener (or system)
intended for use in an industrial location or building such as a factory or loading dock area or other
locations not intended to service the general public.
The Mighty Mule® Gate Opener is intended for use with vehicular swing gates. The opener can be used in
Class I, Class II and Class III applications.
FOR YOUR RECORDS
Please record the product serial number (located on the rear of opener arm),
and the date and place of purchase in the spaces provided below. Refer to this
information when calling GTO for service or assistance with your automatic
gate opener.
Serial Number ____________________ Date of Purchase ____________________
Place of Purchase ____________________
Remember to keep all receipts for proof of purchase.
Converting Metric Units to English Equivalents
When You Know Multiply By To Find Symbol
centimeters 0.3937 inches in. (or ")
meters 3.2808 feet ft. (or ')
kilograms 2.2046 pounds lb. (or #)
Converting English Units to Metric Equivalents
When You Know Multiply By To Find Symbol
inches 2.5400 centimeters cm
feet 0.3048 meters m
pounds 0.4535 kilograms kg
Converting Temperature
deg. Celsius (ºC x 1.8) + 32 deg. Fahrenheit ºF
deg. Fahrenheit (ºF-32) ÷ 1.8 deg. Celsius ºC
Conversion Chart

Gate Opener Class Categories------------------------------------------------------------ inside cover
Units and Standards Conversion Chart ------------------------------------------------ inside cover
PLEASE READ THIS FIRST! ------------------------------------------------- page iii
Important Safety Instructions ---------------------------------------------- page 1
Disconnecting the Opener------------------------------------------------------------- page 1
Important Safety Instructions for the Consumer ------------------------------- page 2
Secondary Means of Protection Against Entrapment ------------------------ page 5
Required Safety Precautions for Gates-------------------------------------------- page 6
Warning Signs and Labels------------------------------------------------------------- page 7
Installation ------------------------------------------------------------------------ page 8
Parts List ------------------------------------------------------------------------------------- page 8
Tools and Items Needed for Installation------------------------------------------- page 9
Technical Specifications ------------------------------------------------------------- page 10
Installation Overview -------------------------------------------------------------------- page 11
Installation of the Mounting Hardware--------------------------------------------- page 13
Mounting the Opener-------------------------------------------------------------------- page 17
Installation of the Closed Position Stop ------------------------------------------- page 17
Mounting the Control Box-------------------------------------------------------------- page 18
Powering Options: Transformer or Solar -------------------------------- page 19
Solar Panel and Gate Activity Chart ------------------------------------------------ page 19
Connecting Solar Panel(s)------------------------------------------------------------- page 20
Connecting the Battery ----------------------------------------------------------------- page 21
Connecting the Transformer ---------------------------------------------------------- page 21
Setting the Closed Position Limit --------------------------------------------------- page 24
Control Board Settings ------------------------------------------------------ page 25
Stall Force and Auto-Close ------------------------------------------------------------ page 25
Setting Your Personal Transmitter Code ------------------------------- page 26
Connecting Additional Safety Devices --------------------------------- page 27
Control Board Connections ------------------------------------------------ page 28
Connecting Accessories ---------------------------------------------------- page 29
Visual and Audible Diagnostic Indicators ----------------------------- page 30
Warranty Service --------------------------------------------------------------- page 32
Column Installation Information ------------------------------------------ page 33
Accessory Catalog ------------------------------------------------------------ page 34
Table of Contents
KEEP THESE INSTRUCTIONS FOR FUTURE REFERENCE

PLEASE READ THIS FIRST!
iii
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.
Thank you for purchasing a Mighty Mule® 200 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 video will
enable you to properly install your Mighty Mule® E-Z Gate Opener.
The Mighty Mule® 200 E-Z Gate Opener is designed for installation on a pull-to-open single leaf gate
(gates that open into the property). The gate must not exceed 12 feet and 300 pounds (please see Technical
Specifications on page 10). The Mighty Mule® E-Z Gate Opener can be used on vinyl, aluminum, chain
link, farm tube, and wrought iron gates. Use on solid gates is not recommended. Solid surface gates have
a high resistance to the wind.
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 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:
Push-to-open;
Column Mounting;
Slide gates;
Heavy duty or commercial uses;
Professional installation;
please call GTO at (800) 543-GATE [4283] or [phone] 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.
®
E-Z GATE OPENERS
Use on solid (surface) 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, blow fuses, or may damage the equipment.

IMPORTANT SAFETY INSTRUCTIONS
Mighty Mule 200 1
Because automatic gate openers produce high levels of force, consumers need to know the potential
hazards associated with improperly designed, installed, and maintained automated gate opener systems.
Keep in mind that the gate opener is just one component of the total gate operating system. Each
component must work in unison to provide the consumer with convenience, security, and safety.
This manual contains various safety precautions and warnings for the consumer. Because there are many
possible applications of the gate opener, the safety precautions and warnings contained in this manual
cannot be completely exhaustive in nature. They do, however, provide an overview of the safe design,
installation, and use of this product. CAREFULLY READ AND FOLLOW ALL SAFETY PRECAUTIONS,
WARNINGS, AND INSTALLATION INSTRUCTIONS TO ENSURE THE SAFE SYSTEM DESIGN,
INSTALLATION, AND USE OF THIS PRODUCT.
Precautions and warnings in this manual are identified with this warning symbol. The symbol
identifies conditions that can result in damage to the opener or its components, serious injury, or death.
Because GTO automatic gate openers are only part of the total gate operating system, it is the
responsibility of the consumer to ensure that the total system is safe for its intended use.
Disconnecting the Opener
1. Turn opener power switch OFF.
2. Remove hairpin clip, clevis pin, and
bushing from the front mounting point.
3. Remove the opener from the mount.
The gate can be opened and closed
manually when the opener is disconnected.
NOTE: Substitute a Pin Lock (FM133) for the clevis pin on
the front mount only of the gate opener to prevent unauthorized
removal of the opener from the gate
(see Accessory Catalog).
To Manually Open and Close the
Gate, Follow the Procedure Below:
CAUTION: The gate will move freely and uncontrolled when the gate opener
is removed from the gate. ONLY disconnect the opener when the opener power
switch is OFF and the gate is NOT moving.
Clevis
Pin
Hairpin Clip
Gate Bracket
Front Mount
Bushing
CAUTION: Because the Mighty Mule gate opener
is battery powered, disconnect the opener ONLY when the
power switch on the opener is turned OFF. Unplugging the
transformer does not turn power to the opener OFF.
IMPORTANT: NEVER allow opener arm to hang
by the front mount - it will break from the arm weight.

IMPORTANT SAFETY INSTRUCTIONS
2 Mighty Mule 200
For The Consumer
WARNING: To reduce the risk of injury or death:
1. READ AND FOLLOW ALL INSTRUCTIONS. Failure to meet the requirements set forth in the instruction
manual could cause severe injury and/or death, for which the manufacturer cannot be held responsible.
2. When designing a system that will be entered from a highway or main thoroughfare, make sure the
system is placed far enough from the road to prevent traffic congestion.
3. The gate must be installed in a location that provides adequate clearance between it and adjacent
structures when opening and closing to reduce the risk of entrapment. Swinging gates must not open
into public access areas.
4. The gate and gate opener installation must comply with any applicable local codes.
I. Before Installation
1. Verify this opener is proper for the type and size of gate, its frequency of use and the proper class rating.
2. Make sure the gate has been properly installed and swings freely in both directions. Repair or replace
all worn or damaged gate hardware prior to installation. A freely moving gate will require less force to
operate and will enhance the performance of the opener and safety devices used with the system.
3. Review the operation of the system to become familiar with its safety features. Understand how to
disconnect the opener for manual gate operation (see page 1).
4. This gate opener is intended for vehicular gates ONLY. A separate entrance or gate must be installed
for pedestrian use (see page 6).
5. Always keep people and objects away from the gate and its area of travel. NO ONE SHOULD CROSS
THE PATH OF A MOVING GATE.
6. Pay close attention to the diagram below and be aware of these areas at all times.
Gate in the
Open Position
ZONE 2
ZONE 3
ZONE 4
ZONE 5
Driveway
ZONE 1
Entrapment Zones
for a Pull-To-Open
Application

IMPORTANT SAFETY INSTRUCTIONS
Mighty Mule 200 3
Entrapment Zones for a proper Pull-To-Open installation:
Zone 1 – leading edge of the gate and the fence post.
Zone 2 – between the gate and the gate post.
Zone 3 – the path of the gate.
Zone 4 – the space between the gate in the open position and any object such as a wall, fence, tree, etc.
Zone 5 – pinch points between the opener and gate.
II. During Installation
1. Install the gate opener on the inside of the property and fence line. DO NOT install an opener on the
outside of the gate where the public has access to it.
2. Be careful with moving parts and avoid close proximity to areas where fingers or hands could be pinched.
3. Devices such as contact sensors (safety edges) and non contact sensors (photo beams) provide
additional protection against entrapment.
4. If push buttons or key switches are installed, they should be within sight of the gate, yet located at least
10 feet from any moving part of the gate (see diagram below). Never install any control device where a
user will be tempted to reach through the gate to activate the gate opener.
5. Do not activate your gate opener unless you can see it and can determine that its area of travel is clear of
people, pets, or other obstructions. Watch the gate through its entire movement.
6. Secure outdoor or easily accessed gate opener controls in order to prohibit unauthorized use of the gate.
Moving Gate
Area
Driveway
10'
10'
10'
10'
NEVER INSTALL
any control device
within gray area
Pull-To-Open
Application

IMPORTANT SAFETY INSTRUCTIONS
4 Mighty Mule 200
III. After Installation
1. Attach the warning signs (included) to each side of the gate to alert the public of automatic gate
operation. It is your responsibility to post warning signs on both sides of your gate. If any of these signs
or warning decals become damaged, illegible or missing, replace them immediately. Contact GTO for
free replacements.
2. The gate is automatic and could move at any time, posing a serious risk of entrapment. No one should
be in contact with an activated gate when it is moving or stationary.
3. Do not attempt to drive into the gate area while the gate is moving; wait until the gate comes to a
complete stop.
4. Do not attempt to "beat the gate" while the gate is closing. This is extremely dangerous.
5. Do not allow children or pets near your gate. Never let children operate or play with gate controls.
Keep the remote controls away from children and unauthorized users; store controls where children and
unauthorized users do not have access to them.
6. KEEP GATE AND GATE OPENER PROPERLY MAINTAINED. Always turn power to opener OFF before
performing any maintenance. Regularly grease the gate hinges. Clean the push-pull tube with a soft, dry
cloth and apply silicone spray to it at least once per month.
7. To operate this equipment safely, YOU must know how to disconnect the opener for manual gate
operation (see page 1). If you have read the instructions and still do not understand how to disconnect
the opener, contact the GTO Service Department.
8. Disconnect the opener ONLY when the power is TURNED OFF and the gate is NOT moving.
9. Make arrangements with local fire and law enforcement for emergency access.
10. Distribute and discuss copies of the IMPORTANT SAFETY INSTRUCTIONS section of this manual with
all persons authorized to use your gate.
11. IMPORTANT: Save these safety instructions. Make sure everyone who
is using or will be around the gate and gate opener are aware of the
dangers associated with automated gates. In the event you sell the
property with the gate opener or sell the gate opener, provide a copy
of these safety instructions to the new owner.
Should you lose or misplace this manual, a copy can be obtained by
downloading one from the Mighty Mule® web site (www.mightymule.
com), by contacting GTO, Inc., at 3121 Hartsfield Road, Tallahassee,
Florida 32303 or by calling 1-800-543-4283 and requesting a duplicate
copy. One will be provided to you free of charge.

IMPORTANT SAFETY INSTRUCTIONS
Mighty Mule 200 5
ENTRAPMENT ALARM (UL 325; 30A.1.1A)
The Mighty Mule® E-Z Gate Opener is designed to stop and reverse within 2 seconds when the
gate comes in contact with an obstruction. Additionally, these openers are equipped with an audio
entrapment alarm which will activate if the unit obstructs twice while opening or closing. This alarm
will sound for a period of 5 minutes, or until the opener receives an intended signal from a hard wired
entry/exit source (e.g. push button control or keypad) and the gate returns to a fully open or fully closed
position. Turning the power switch on the control box OFF and back ON will also deactivate the alarm.
Wireless controls such as transmitters and wireless keypads will not deactivate the alarm.
Secondary Means of Protection Against
Entrapment
As specified by Gate Opener Safety Standard, UL 325 (30A.1.1), automatic gate openers shall have
an inherent entrapment sensing system, and shall have provisions for, or be supplied with, at least one
independent secondary means to protect against entrapment. The Mighty Mule® utilizes Type A, an
inherent (i.e., built-in) entrapment sensing system as the primary type of entrapment protection. Also, the
Mighty Mule® has provisions for the connection of Type B2 protection to be used as the secondary type
of entrapment protection, if desired.
1. For gate openers utilizing a contact sensor (e.g., safety edge sensor– Type B2) in accordance with UL
325 (51.8.4 [i]):
A. One or more contact sensors shall be located at the leading edge, bottom edge, and post edge,
both inside and outside of a vehicular swing gate system.
B. A hard wired contact sensor shall be located and its wiring arranged so that the communication
between the sensor and the gate opener is not subjected to mechanical damage.
C. A wireless contact sensor such as one that transmits radio frequency (RF) signals to the gate
opener for entrapment protection functions shall be located where the transmission of the signals are
not obstructed or impeded by building structures, natural landscaping or similar obstruction. A wireless
contact sensor shall function under the intended end-use conditions.
Vehicular Gate
Leading Edge Contact Sensor
on both sides of the gate
Bottom Edge Contact Sensor
on both sides of the gate
Post Edge Contact Sensor
on both sides of the gate

IMPORTANT SAFETY INSTRUCTIONS
6 Mighty Mule 200
Install Warning Signs
Entrapment Protection
GTO’s inherent obstruction settings, even when properly adjusted, may not be sensitive enough to
prevent bodily injury in some circumstances. For this reason, safety devices such as safety edge
sensors (or photoelectric sensors), which stop and reverse gate direction upon sensing an obstruction,
are suggested for enhanced protection against entrapment.
Required Safety Precautions for Gates
Warning Signs
The warning signs (at right) must
be installed on both sides of the
gate (see page 7 for details).
Warning signs alert people of automatic gate operation and are required when installing the Mighty Mule®
E-Z Gate Opener. Furthermore, a walk-through gate must be installed if pedestrian traffic is expected near
the vehicular gate. We recommend using the GTO Bulldog Pedestrian Gate Lock (Call the GTO Sales
Department) for controlled access.
1. KEEP CLEAR! Gate may move at any time.
2. Do not allow children to operate gate or
play in gate area.
3. This gate is for vehicles only. Pedestrians
must use a separate entrance.
Moving Gate Can Cause
Injury Or Death
WARNING
!
Warning Sign Pedestrian Gate
Bulldog Pedestrian
Gate Lock
Vehicular Gate
Contact Sensor
(recommended, not included)
Contact Sensor
(recommended, not included)
Contact Sensor
(recommended, not included)
(recommended, not included)

IMPORTANT SAFETY INSTRUCTIONS
Mighty Mule 200 7
Warning signs (2 enclosed) to be installed on each side
of the gate (3–5 feet above the bottom of the gate)
!
Product identification label (1)
installed under rear mount on arm
Control box label (1)
i
nstalled on front of the control box
Logo and warning labels (2)
installed on each side of opener housing
GTO DC SW200 Series
Conforms to UL325
5th Edition Standards
Serial No. MM200-0000000
mm/dd/yy
GTO, Inc Ta llahassee, Florida USA
®
E-Z GATE OPENER
®
200
1. KEEP CLEAR! Gate may move at any time.
2. Do not allow children to operate gate or play in gate area.
3. This gate is for vehicles only. Pedestrians must use separate entrance.
Maximum Gate: 300 lbs. (249.4 kg); 12 ft. (4.9 m) • Voltage: 12 Vdc;
Frequency: 0Hz; Power: 25W • Class I and II Vehicular Swing Gate Operator
TO MANUALLY OPEN AND CLOSE THE GATE
1. Turn opener power switch OFF.
2. Disconnect front or rear mount from mounting bracket.
3. Pull opener away from mounting bracket and move gate.
Disconnect opener ONLY when the power switch is
OFF and the gate is not moving.
®
E-Z GATE OPENER
®
These warning labels should
be found at the locations
specified below. If any are
missing, immediately contact
GTO for replacements.

8 Mighty Mule 200
Parts List - Opener and Mounting Hardware
Hairpin Clip (2)
3/8" x 1-1/2" Clevis Pin (2)
5/16" x 1-1/2" Bolt (1)
3/8" x 1-1/2" Bolt (1)
3/8" x 2-3/4" Bolt (2)
3/8" x 8" Bolt (2)
8" Nylon Cable Tie (14)
3/8" Washer (6)
5/16" Washer (1)
3/8" Lock Nut (5)
5/16" Lock Nut (1)
Hardware Bag Contents
Gate Opener (1)
Installation DVD (1)
Gate Bracket (1)
Post Pivot Bracket (1)
3/8" Bushings (1)
Customer Support Card (1)
Post Bracket (1)
Closed Position
Stop Plate (1)
2" Mounting Screw (3)
Transformer (1)
Warning Signs (2)
GTO Transmitter(1)
1 KEEP CLEAR! Gate may move at any ime
2 Do not allow ch ldren to ope ate gate or
play in gate area
3 This gate is for vehicles only Pedest ians
must use a separate entrance
Moving Gate Can Cause
Injury Or Death
WARNING
!
Control
Box (1)

Mighty Mule 200 9
Tools Needed
• Power Drill
• Open End Wrenches — 1/2", and 9/16"
• Adjustable Wrench
• 3/8" Drill Bit
• Hacksaw or Heavy Duty Bolt Cutters
• Small (Flat Bladed) Screwdriver
• Phillips Screwdriver/ Large
• Tape Measure
• Level
• Wire Strippers
• C-Clamps — small, medium, and large
• Center Punch
• Extra person will be helpful
• Hammer (for center punch)
YOU MAY ALSO NEED THESE ITEMS BEFORE YOU BEGIN THE INSTALLATION
(Some of these items can be found in the Accessory Catalog page 34):
• Low voltage wire (RB509) will be needed to run from the transformer to the opener control board;
length depends upon the distance between the transformer power supply and the opener arm. See
Powering Options: Transformer or Solar on page 19, and the Accessory Catalog.
• If your gate is more than 1000' away from AC power source you will need to use at least one
Mighty Mule® 5 watt Solar Panel (FM121) (not included) to charge the 12 Volt automotive or marine
type battery (not included). See the Accessory Catalog.
• If your fence post is made of wood and is less than 6" in diameter or 6" square, see page 13.
• PVC conduit.
• If you have thin walled tube or panel gates, see Recommended Reinforcement Examples on page 13.
• Depending on the type of gate, a horizontal cross member or mounting plate may be needed to
mount the front of the opener and gate bracket to the gate. See page 11 and page 13.
• Surge protection for transformer.
• Some types of installations require U-Bolts for closed position bracket.
• Some installations may require mufer clamps for the gate bracket. (See Page 13)
IMPORTANT:
A 12V AUTOMOTIVE OR DEEP CYCLE MARINE BATTERY
IS REQUIRED TO OPERATE THE GATE OPENER.

10 Mighty Mule 200
DRIVE
• Low friction screw drive (linear actuator) rated for -5 ºF to +160 ºF (-20 ºC to +71 ºC).
• Powered by a 12 V motor with integral case hardened steel gear reducer. Motor speed reduced to 260 rpm.
Generates 520 inch lb. of torque at 12 V.
• Maximum opening arc of 110º. Approximate opening time (90º): 18 seconds, depending on weight of gate.
POWER
• The system is powered by a 12 Vdc automotive or marine battery.
• Battery charge is maintained by a 120 Vac, 18 Vac output transformer [rectied to 14.5 Vdc (40 VA) through
the GTO control board] or by optional GTO Solar Panels [the panel should generate minimum of 5 W at
300 mA]. A diode on the control board prevents battery discharge.
IMPORTANT: Never use both transformer and solar panel - this will damage the battery and control board.
• One (1) blade-style fuse is rated for 15 A.
NOTE: The transformer should not be directly connected to any battery. Do not replace fuses with
higher ampere rated fuses; doing so will void your warranty and may damage your control board.
CONTROL
•GTO microprocessor-based control board is set for single leaf, pull-to-open gate installations.
• Control board has temperature compensated circuits.
• A circuit on the control board regulates charging. "Sleep draw" is 15 mA; "active draw" is 2 to 5 A.
• Auto-memorization of digital transmitter code.
•GTO RF receiver tuned to 318 MHz.
• Opener length with push-pull tube fully retracted is 263/8", mounting point to mounting point. Maximum
stroke is 13".
• Adjustable auto-close timer (OFF to 120 s), and obstruction sensitivity.
• Power terminal block accommodates a transformer or solar panels.
• Accessory terminal block fully compatible with all Mighty Mule access controls.
• Control board allows connection of safety edge sensors and photoelectric sensors.
• Audio entrapment alarm sounds if unit encounters an obstruction twice while opening or closing.
OPERATIONAL CAPACITY
• The Gate Capacity Chart shows approximate cycles, per day, you can expect from the Mighty Mule 200
Automatic Gate Opener when powered with a transformer. Actual cycles may vary slightly depending upon
the type and condition of gate and installation.
MIGHTY MULE® 200 E-Z GATE OPENER
Technical Specifications
* These specifications are subject
to change without notice.
Gate Weight
Gate Length
Number of Cycles Per Day
Mighty Mule 200 Gate Capacity /Cycle Chart
Estimated number of daily cycles, based on use with a transformer.
300 lbs.
150 lbs.
100 lbs.
50 lbs.
77
82
87
92
5’ - 6’
72
77
82
87
8’
67
72
77
82
10’
62
67
72
77
12’
NOTE: BALL BEARING HINGES SHOULD BE USED ON ALL GATES WEIGHING OVER 250 LB.
To determine the number of cycles the gate opener will perform using solar panels, please see the specifications
listed on page 18 or call [phone] or [phone] for more information.
* An operation cycle is one full opening and closing of the gate.

Mighty Mule 200 11
Preparation of the Gate
The gate must be plumb, level, and swing freely
on its hinges. Wheels must not be attached to
the gate. The gate must move throughout its arc
without binding or dragging on the ground.
Note that gates over 250 lb.. should have ball
bearing hinges with grease fittings.
The fence post should be no larger than 6" in
diameter and must be secured in the ground
with concrete so it will minimize twist or ex
when the opener is activated. We recommend
you position the opener near the centerline
of the gate to keep the gate from twisting and
exing and to avoid backsplash from rain water.
The addition of a horizontal or vertical cross
member (if one is not already in place) to provide
a stable area for mounting the gate bracket is
also important.
Horizontal Cross Member
G
ate
S
wings Evenly and Freely
Hung Firmly and Plumb
Post Bracket Assembly
12 Volt automotive or marine
type battery in weather proof
housing (not included).
Gate Bracket
Single Gate Opener
Fence Post Set in Concrete
Run 1000' (max.) of low
voltage wire to control
box from transformer
(wire not included).
Closed Position Positive Stop Plate
120 Volt indoor
Transformer
(surge protector
not supplied)
PVC conduit (not included)
to protect wire from lawn
mowers and weed eaters.
Warning Sign
Control Box
Installation Overview
The diagrams shown below are examples of an installation on a chain link fence.
Horizontal Cross Member
Vertical Cross Member

12 Mighty Mule 200
1" minimum
Gate in the
OPENED POSITION
Pinch Area
Gate in the
CLOSED POSITION
Pinch Area
1" minimum
13” or less
IMPORTANT: To achieve optimum leverage for the gate opener and ensure long trouble free service, the
gate opener needs to be installed within the following perameters.
The diagram below shows the optium position for gate opener arm in relation to the gate in the open and
close positions.
Installation Overview (continued)
If the gate post is larger
than 6 inches the Post Pivot
Bracket can be removed and
the center hole of the Post
Bracket can be the mounting
point for the gate opener.
If installing on columns or
posts larger than 8 inches
refer to page 33 for column
installation information.
Center hole of
gate opener
pivot bracket
Be sure the position of the gate opener and brackets allows for 1 inch of
clearance between the gate and the opener in both the open and closed
position, at the same time maintaining a maximum distance of 13 inches
from the end of the opener arm to the gate bracket with the gate in the
closed position.

Mighty Mule 200 13
Installation of Mounting Hardware
The position of the post bracket determines the leverage and efficiency of the opener. The post bracket
position also sets the clearance between the opener and gate in the open and closed positions.
The curved design of the post bracket
works well for installations on round and
square fence posts. Because the post
bracket carries the entire thrust of the
active opener, bolts that completely
penetrate the fence post must be used.
On wooden posts, place a metal plate or
washer (not supplied) between the nuts
and the fence post to prevent the thrust
of the opener from pulling the bolts and
washers out of the wood.
NOTE: A fence post smaller than 6" in
diameter or 6" square should be made
of metal instead of wood so that it will
remain stable while the opener is moving the gate.
Post
Bracket
Post
Pivot Bracket
Metal Plate
Wooden Post
Post
Bracket
Post
Pivot Bracket
Metal Plate
Wooden Post
Muffler Clamp for Gate Bracket
Wood or Metal Reinforcement 1" x 6" Wood Reinforcement
IMPORTANT:
We recommend using a mufer clamp, wood, or metal (not included) to reinforce thin walled tube gates or
wood to reinforce panel gates as shown. These reinforcement methods will prevent damage to the opener
and gate when the opener is installed. Additional hardware may be needed depending on the installation.
Gate Bracket
Wood or Metal
Reinforcement
(not supplied)
Gate
Bracket
Panel
Gate
1" x 6"
Wood
Reinforcement
NOTE: The post pivot bracket may not need to be used on post larger than 6" in diameter.
Thin Walled
Tube Gate
Gate Bracket
Muffler Clamp
(not supplied)

14 Mighty Mule 200
Determining the Mounting Position
of the Post Bracket Assembly and the Gate Bracket
Step 3
With the gate in the open position (up to 110º from its closed position), and the opener fully retracted,
adjust the post bracket assembly and gate bracket until the opener is level. While holding the opener level,
use C-clamps to temporarily keep the post bracket assembly and gate bracket in their respective positions
on the fence post and gate.
Step 1
Insert the 3/8" x 11/2"
bolt through the center
hole of the post brackets
and post pivot bracket
as shown. Fasten a 3/8"
washer and 3/8" lock nut
on the end of the bolt.
DO NOT overtighten the
lock nut because the
post pivot bracket will
have to be adjusted later.
Step 2
Attach post bracket assembly to the rear mount of the opener with a clevis pin and a 3/8" washer. Secure
the clevis pin with a hairpin clip. Attach gate bracket to the front mount of the opener with a clevis pin and a
3/8" bushing. Secure the clevis pin with a hairpin clip
3/8" x 1-1/2" Bolt
3/8" Lock Nut
Post Pivot Bracket
Post Bracket
Post Bracket Assembly
3/8" Washer
REMINDER:
The following steps are
intended for pull-to-open
gate installations only.
Clevis Pin
Hairpin Clip
Post Bracket Assembly
3/8” Washer
Rear Mount
Opener
Clevis
Pin
Hairpin Clip
Gate Bracket
Front Mount
Bushing
Fence Post
Gate In Open Position
LEVEL horizontal cross member
Post Bracket Assembly
Gate Bracket
Level Opener

Mighty Mule 200 15
1" minimum
Gate in the
OPENED POSITION
Pinch Area
Gate in the
CLOSED POSITION
Pinch Area
1" minimum
13” or less
Be sure gate opener
and bracket don't bind.
Step 4
After verifying that you have the best position for the post pivot bracket in the open position, insert the
5/16" x 1-1/2" bolt through the aligned holes of the post bracket and post pivot bracket to hold it in place.
Remove the clevis pin from the front mount and while supporting the gate opener, swing the gate and gate
opener to the closed position. With the gate and gate opener in the closed position check the clearance
and be sure that the gate opener is not binding at the post pivot bracket.
If you don't have 1 inch of clearance, the gate opener is binding on the post pivot bracket, or you don't
have 13' or less from the front mount to the gate bracket in the closed position, remove the 5/16" x 1-1/2"
bolt and readjust the pivot bracket until you can achieve these important clearances and distance.
With the post pivot bracket in the optimum position for clearance and freedom of movement, reattach
the opener to the gate bracket in the open position and recheck the gate opener level and make sure the
brackets are clamped securely.
IMPORTANT: While determining the mounting point for the post pivot bracket assembly, be sure that the
position allows for minimum 1 inch of clearance between the gate and the opener in both the open and
closed positions, as well as maintaining the maximum 13" distance explained in the gate installation overview
earlier. This position will give the opener the most efficient leverage point for opening and closing the gate
and more importantly provides the least possible pinch area.
TIP: Turning the pivot bracket over gives
more hole alignment options for the post
pivot bracket assembly. You can also move
the entire post pivot bracket assembly to
different positions on the gate post to help
achieve the proper clearances.
3/8" x 1-1/2"
Bolt
Post Pivot
Bracket
Determine Best
Hole Alignment
to Achieve
1” Clearance
Post Bracket
Post Pivot Bracket
Alignment Options

16 Mighty Mule 200
Installing the Post Bracket Assembly and Gate Bracket
Step 5
Mark reference points for bolt holes
on the fence post through middle
of bracket slots. Marking reference
points in this manner allows room for
adjustment when mounting the post
bracket assembly and gate bracket.
After marking your reference points,
remove the opener and brackets
from the fence and gate.
Step 6
Drill 3/8" holes into fence post as
marked.
Step 7
Fasten post bracket assembly to the
fence post using (2) 3/8" x 8" bolts,
washers and lock nuts (provided).
Remove excess bolt length
extending beyond the tightened nuts
with a hacksaw or bolt cutters.
NOTE: In cases where the fence
post has a diameter larger than 6",
threaded rods or carriage bolts
longer than 8" (not supplied) must
be used.
Step 8
Mark reference points for bolt holes
on the gate cross member through
middle of gate bracket slots. Drill
3/8" holes into the gate cross
member as marked.
Mount gate bracket using (2)
3/8" x 2-3/4" bolts, washers,
and lock nuts (provided). Cut off
excess bolt length extending beyond
the tightened nuts.
Gate Bracket Mounting Examples
Round Tube & Chain Link Gate
Square Tube Gate
Mounting Plate
Created for
Decorative Gate
(required but not
supplied)
Remove excess bolt length
with hacksaw or bolt cutters
FRONT VIEW SIDE VIEW
FRONT VIEW
SIDE VIEW
Round Metal Post
Round Wood Post
Square Metal Post
Square Wood Post
Remove excess bolt length
with hacksaw or bolt cutters
SIDE VIEW
TOP VIEW
EXAMPLES
Post Bracket
Assembly
Mark fence post through
middle of bracket slots
and drill 3/8" holes
Gate In Open Position
LEVEL horizontal cross member
Mark cross member through middle of
gate bracket slots and drill 3/8" holes