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During assembly, installation and adjustment of the opener, instructions will call for hand tools shown below.
The Chamberlain Group, Inc.
Testing Force Setting
Stepladder
New GDO Manual
2/1/92
WARNING
An unbalanced garage door might not reverse
when required and someone under the door
could be seriously injured or killed.
If your garage door binds, sticks or is out of
balance, call for professional garage door
service. Garage doors, door springs, cables,
pulleys, brackets and their hardware are under
CAUTION
extreme tension and can cause serious injury
or death. Do not try to loosen, move or adjust
them yourself!
Ropes left on a garage door could cause
someone to become entangled and killed.
Remove all ropes connected to the door before
installing and operating the opener.
Identify the type and height of your door, any special
conditions that exist, and any additional materials
that may be required. Refer to the lists on page 4 or
page 5.
You'll Need Tools
Carpenter's
Level
Tape Measure
Drill
1/2" and 7/16" Sockets
and Wrench
SECTIONAL DOOR
Pencil
Wire Cutters
3/16", 5/16" and
5/32" Drill Bits
Pliers
Screwdriver
WARNING
To avoid damage to the garage door and
opener, disable locks before installing and
operating the opener. Use a wood screw or nail
to hold locks in the "open" (unlocked) position.
Operation at other than 120V 60 Hz will cause
opener malfunction and damage.
Before you begin, complete the following test to
make sure your door is balanced, and is not
sticking or binding:
• Lift the door about halfway as shown. Release the
door. It should stay in place, supported entirely by
its springs.
• Raise and lower the door to see if there is any
binding or sticking.
ONE-PIECE DOOR
3
Hack Saw
WARNING
Claw Hammer
Adjustable End Wrench
CAUTION
Test Your Door
SECTIONAL DOOR
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