Preparing Your Garage Door; Tools Needed - Craftsman 139.53964SRT Owner's Manual

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 in 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.
To prevent possible SERIOUSINJURYOR DEATH:
• ALWAYScall a trained door systems technician if
garage door binds, sticks, or is out of balance. An
unbalanced garage door may not reverse when
required.
• NEVERtry to loosen, move or adjust garage door, door
springs, cables, pulleys, brackets or their hardware, all
of which are under EXTREMEtension.
• Disable ALL locks and remove ALL ropes connected to
garage door BEFORE installing and operating garage
door opener to avoid entanglement.
To prevent damage to garage door and opener:
• ALWAYSdisable locks BEFORE installing and operating
the opener.
• ONLYoperate garage door opener at 120V, 60 Hz to
avoid malfunction and damage.
Sectional Door
One-Piece Door
Level
Tools needed
During assembly, installation and adjustment of the
opener, instructions will call for hand tools as
illustrated below.
Pencil
Stepladder
Tape Measure
D_ Wire Cutters
Drill
3/16", 5/16" ff_
and 5/32" "--"-_P_iers
", ", ", " Locking ptiers
and 1/4"
Screwdriver
o)
Adjustable End Wrench
3