You'll need tools, A caution, Warning – Sears 139.53535SRT1 User Manual

Page 3: Caution

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You'll Need Tools

During assembly, installation and adjustment of the opener, instructions will call for hand tools shown below.

Screwdriver

Adjustable End Wrench

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

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 and any

special conditions that exist and any additional
materials that may be required by referring to the lists
on page 4 or page 5.

A

CAUTION

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"

(uniocked)

position.

Operation at other than 120V 60 Hz wiii cause
opener maifunction 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.

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