Craftsman 139.53675SRT - Manual (Page 16)

Installation Step 4
Position the Opener
Follow Instructions which apply to your door
type as illustrated.
To prevent damage to steel, aluminum,
fiberglass or glass panel doors, do not rest the
opener on №e door without using a 2x4.
A 2x4 laid flat Is convenient for setting an ideal
door-to-T-rail distance.
• Raise the opener onto a stepladder.
You will need help at this paint if the ¡adder is
not tail enough.
♦ Open the door all the way and place a 2x4 laid flat
on the top section beneath the T-rail.
if the top panel hits the traiiey when you raise
the door, puH dawn on the trolley release arm to
disconnect the inner and outer sections. The
trolley can remain disconnected until Step 12 is
completed.
laid Flat
Tmiley
ONE-PIECE Door without Trnck
• With the door fuily open and parallel to the floor,
measure the distance from the floor to the top of
the door.
• Using a stepladder as a support, raise the opener
to the same distance as the door from the floor (it
wifi be at a slight angle as shown).
• The top of the door should be level with the top of
the opener. Do not position the opener more than
2" above this point
Top of Opener
16