Craftsman 139.53918D Manual Del Propietário página 3

Preparingyour garage door
Before you begin:
• Disable locks.
• Removeany ropes connected to garage door.
• Completethe followingtest to make sure your garage door
is balancedand is not sticking or binding:
1. Lift the door about halfway as shown. Releasethe 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.
• DisableALL 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.
• ONLY operate garage door opener at 120V, 60 Hz to avoid
malfunction and damage.
Sectional Door
One-Piece Door
Tools needed
During assembly, installation and adjustment of the opener,
instructions will call for hand tools as illustrated below.
Stepladder
Level (optional)
Tape Measure
Drill 3/16", 5/16"
and 5/32"
8_
_/°2c' _e5t/s8 "a, 7d/1W"r,e _/Clh"
and 1/4"
Pencil Hack Saw
Wire Cutters
Pliers
Claw Hammer
Screwdriver
Adjustable End Wrench