Sears 139.53971SRT - Manual (Page 3)

Preparing your garage door
Before you begin­
* Disable locks
• Remove any ropes connected to garage door
• Complete the following test to make sure your
garage door is balanced and is not sticking or
binding
1 Lift the door about halfway as shown Release
the door If balanced, it should stay m place
supported entirely by its springs,
2. Raise and lower the door to see if there is any
binding or sticking.
If your door binds, sticks, or is out of balance, call
a trained door systems technician.
One-Piece Door
A WARNING
To prevent possible SERIOUS INJURY OR DEATH
• ALWAYS call a trained door systems technician if
garage door binds, sticks, or is out of balance An
unbalanced garage door may not reverse when
required
• NEVER try to loosen, move or adjust garage door, door
springs, cables, pulleys, brackets or their hardware, all
of which are under EXTREME tension
• Disable ALL locks and remove ALL ropes connected to
garage door BEFORE installing and operating garage
door opener to avoid entanglement,
CAUTION
To prevent damage to garage door and opener
• ALWAYS disable locks before installing and operating
the opener
• ONLY operate garage door opener at 120V, 60 Hz to
avoid malfunction and damage
Toots needed
During assembly, installation and adjustment of the
opener, instructions will call for hand tools as
illustrated below