Positionthe Opener - Craftsman 139.30437 Owner's Manual

INSTALLATION STEP 4
Positionthe Opener
Follow instructions which apply to your door type as illustrated.
SECTIONAL DOOROR ONE-PIECEDOORWITH TRACK
A 2x4 laid fiat is convenient for setting an idealdoor-to-rail
distance.
1. Raise the opener onto a stepladder. You will need help at this
point if the ladderis not tall enough.
2. Open the door all the way and place a 2x4 laidfiat on the top
section beneaththe rail.
3. If the top section or panel hits the trolley when you raise
the door, pull down on the trolley releasearm to disconnect
innerand outer sections. Slide the outer trolley toward the
motor unit. The trolley can remain disconnected until
installationStep 12 is completed.
ENGAGED
To prevent damageto garage door, rest garage door opener
rail on 2x4 placed on top section of door.
Rail
ONE-PIECE DOORWITHOUTTRACK
A 2x4 on its side is convenient for setting an ideal
door-to-rail distance.
1. Raise the opener onto a stepladder. You will need help at this
point if the ladder is not tall enough.
2. Open the door aii the way and place a 2x4 on its side on the
top section of the door beneaththe rail.
3. The top of the door should be level with the top of the motor
unit. Do not position the opener more than 4" (10 cm) above
this point.
Header
Bracket
the correct mounting height
from ceiling.
15