Mighty Mule MM272 - Installing the First Gate Opener; Reinforcing Gate Brackets

16 MM272 Installation Instructions
IMPORTANT: Determine which side of the driveway you will mount the control box. From this point on, the gate and gate
opener on the same side as the control box will be referred to as the FIRST gate and gate opener. The gate and gate opener on the
opposite side of the driveway from the control box will be referred to as the SECOND gate and gate opener.
We recommend you position the opener near the centerline of the gate to keep the gate from twisting and exing and to avoid
back splash from rain water.
The Post Bracket Assembly
The position of the post bracket assembly determines the
leverage and efciency 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 (see page 15). 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 mufer 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.
Mufer Clamp for
Gate Bracket
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
Post Pivot
Bracket
Post
Bracket
Post Bracket
Assembly
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 the FIRST Gate Opener