Installation Guide
  Mighty Mule MM360 Installation Instructions 17
Installing the Post Bracket Assembly and Gate Bracket
Step 1 
Mark reference points for bolt holes on the fence post 
through middle of bracket slots. Mark reference points 
for bolt holes on the gate cross member through middle 
of gate 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 2 
Drill 
3
/8" holes into fence post as marked.
Step 3 
Fasten post bracket assembly to the fence post using
(4) 
3
/8" x 8" bolts, washers, lock washers, and nuts 
(provided). 
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 4 
Drill 
3
/8" holes into the gate cross member as marked or 
use muffler clamps. Mount gate bracket using (2) 
3
/8" x 2 
3
/4" bolts, washers, lock washers, and nuts (provided). 
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
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 










