Product Manual
14 Mighty Mule MM360 Installation Instructions 
Installation of Mounting Hardware
We recommend you position the opener near the centerline of the gate to keep the gate from twisting and flexing 
and to avoid back splash from rain water.
The Post Bracket Assembly
The position of the post bracket assembly 
determines the leverage and efficiency of the 
opener. The post bracket assembly position 
also sets the clearance between the opener 
and the gate in the open and closed positions.
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 must completely 
penetrate the post.
On wood posts, place a metal plate or washer 
(not supplied) between the nuts and the post 
to prevent the thrust of the opener from pulling 
the bolts and washers out of the wood.
The post pivot bracket may not be necessary 
on posts larger than 6" in diameter. Fence 
posts smaller than 6" in diameter or 6" square 
should be made of metal instead of wood to 
remain stable while the opener is moving the 
gate. 
Reinforcing Gates for the Gate Brackets
We recommend using a muffler clamp, wood, or metal, 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. Additional hardware may 
be needed depending on the installation.
Muffler Clamp 
for Gate Bracket 
(does not require 
drilling and is 
adjustable)
Wood or Metal 
Reinforcement
1" x 6" Wood 
Reinforcement
Post 
Bracket
Post 
Pivot Bracket
Metal Plate
Wooden Post
Post
Bracket
Post
Pivot Bracket
Metal Plate
Wooden Post
Thin Walled
Tube Gate
Gate Bracket
Muffler Clamp
(not supplied)
Gate Bracket
Wood or Metal
Reinforcement
(not supplied)
Gate
Bracket
Panel
Gate
1" x 6"
Wood
Reinforcement
INSTALLATION OF MOUNTING HARDWARE










