Position The Opener - Craftsman 139.53939D Owner's Manual

liNSTALLAT|ON STEP 4
Posifion the Opener
Follow instructions which apply to your door type
as illustrated_
SECTIONAL DOOR OR ONE-PIECE DOOR WITH
TRACK
A 2x4 laid fiat is convenient for setting an ideal
door-to-rail distance.
o Remove foam packaging.
o Raise the opener onto a stepladder. You will need help
at this point if the ladder is not tall enough
o Open the door all the way and place a 2x4 laid flat on
the top section beneath the rail.
o If the top section or panel hits the trolley when you
raise the door, pull down on the trolley release arm
to disconnect inner and outer sections. Slide the outer
trolley toward the motor unit. The trolley can remain
disconnected until Installation Step 12 is completed.
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ENGAGED RELEASED _oJ
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To preventdamageto garagedoor, rest garagedoor opener
ra on 2x4 paced on top secton of door.
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Door 2x4 Is used to determine
the correct mounting height
ONE-PIECE DOOR WITHOUT TRACK
A 2x4 on its side is convenient for setting an ideal
door-to-rail distance.
° Remove foam packaging.
° Raise the opener onto a stepladder. You will need help
at this point if the ladder is not tall enough
° Open the door all the way and place a 2x4 on its side
on the top section of the door beneath the rail.
° The top of the door should be level with the top of the
motor uniL Do not position the opener more than 4"
(10 cm) above this point.
, _
Header ii
the correct mounting height
from ceiling
15