Mighty Mule MM272, Installation Manual

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MM272 Installation Instructions
PUSH-TO-OPEN gates open out from the property (opener arms extend to open). Push-To-Open Brackets are required for this type
of installation, one for each gate [FM148] page 36 ).). In a Push-To-Open installation, the opener is installed while the gate is
in
the closed position and the opener fully retracted. Swinging gates MUST NEVER open into public access areas!
Step 1: Read "Installation of the First Opener" on page 16 .
Step 2: Determining The Mounting Position of The Post Bracket Assembly
A. Insert the
3
/
8
" x 1
1
/
4
" bolt through the center hole of the post brackets and post Push-to-Open bracket. Secure with a
3
/
8
" washer, lock washer and
3
/
8
" nut. DO NOT
overtighten
the nut (the post pivot bracket will have to be adjusted
later).Attach post bracket assembly to the rear mount of the opener with a clevis pin. Secure the clevis pin with a hairpin
clip. Attach gate bracket to the front mount of the opener with a
clevis pin. Secure the clevis pin with a hairpin clip. For pictorial
reference see Steps 1, 2 and 3 on page 17 .
B. With the
gate in the closed position
(up to 110º from its open
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. For pictorial reference see Steps 3 on page 17 .
IMPORTANT:
Be sure the position of the gate opener and brackets
allows for 1" of clearance between the gate and the opener in both
the open and closed position, while at the same time maintaining
a stroke distance of 4" to 13" from center of hole in the end of the
retracted opener arm to the center of the hole in the gate bracket
with the gate in the open position. This mounting position will
give the opener the most efficient leverage point for operation and
provides the least possible pinch area.
C. After verifying that you have the best position for the Push-to-
Open bracket in the closed position, insert the
5
/
16
" x 1
1
/
4
" 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
open
position. Again, check the clearance and be sure that
the gate opener is not binding.
IMPORTANT: If you don't have the required clearance, or if the
gate opener is binding, remove the
5
/
16
" x 1
1
/
4
" bolt and readjust
the Push-to-Open bracket. TIP: Turn the Push-to-Open bracket
over for more hole alignment options.
D. When the Push-to-Open bracket assembly is in the optimum
position, reattach the opener to the gate bracket (gate in the closed
position); recheck the gate opener level; make sure the brackets
are clamped securely. Mark reference points for bolt holes on the
post through middle of post bracket slots. Mark reference points for
bolt holes on the gate cross member through middle of gate bracket
slots. After marking your reference points, remove the opener and
brackets from the post and gate.
E. Drill
3
/
8
" holes through post as marked. Fasten post bracket assembly to the post using two
3
/
8
" x 8" bolts, washers,
lock washers and nuts
.
You must use bolts that completely penetrate the post. Drill
3
/
8
" holes through the gate cross
member as marked. Mount gate bracket using two
3
/
8
" x 2
3/4
" bolts, washers, lock washers and nuts
.
NOTE: For mounting examples, see page 19 .
Push-To-Open Installation Instructions
3/8 " x 1 1/4 " Bolt
3/8 " Nut
Push-To-Open Bracket
(optional accessory FM148)
Post Bracket
Push-To-Open Bracket Assembly
3/8 " Washer
Lock Washer
Gate in the Closed Position
Pinch Area (gray)
Gate in the Open Position
1" minimum
Pinch Area (gray)
1" minimum
4" to 13” stroke
CAUTION
THE OPERATOR MUST BE INSTALLED WHILE FULLY RETRACTED WITH THE GATE IN THE CLOSED POSITION.