Having A Problem - Craftsman 139.53973SRT Ower's Manual

Having a Problem?

Step 6,
Adjustment Step 1.
Repeat the safety reverse test after the adjustment is
complete.
Repeat the safety reverse test after any adjustment of door
arm length, close force or down limit.
Repeat the safety reverse test after the adjustment is complete.
Repeat safety reverse test after adjustments to force or travel
limits. The need for occasional adjustment of the force and
limit settings is normal. Weather conditions in particular can
affect door travel.
Installation
Repeat the safety reverse test after the adjustment is
complete.
Adjustment Step 2.
Installation Step 10.
Adjustment Step 2
(Adjustment Step 1)
Close the door
Do not increase the force to operate
the opener.
Adjustment Step 2,
Installation Step 10.