Craftsman 54931 User Manual

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Generally, a one-piece door does not require reinforcement. If
your door is lightweight, refer to the information relating to
sectional doors in Installation Step 8.

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Depending on your door’s construction, you may need
additional mounting hardware for the door bracket
(Installation Step 8).

Without a properly working safety reversal system, persons
(particularly small children) could be SERIOUSLY INJURED or
KILLED by a closing garage door.

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The gap between the bottom of the garage door and the floor
MUST NOT exceed 1/4" (6 mm). Otherwise, the safety reversal
system may NOT work properly.

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The floor or the garage door MUST be repaired to eliminate
the gap.

Safety Reversing 
Sensor

Access
Door

FINISHED CEILING

Support bracket
& fastening
hardware is required.
See page 16.

Safety Reversing 
Sensor

Header Wall

Gap between floor 
and bottom of door must 
not exceed 1/4" (6 mm).

Wall-Mounted
Door Control

Rail

Motor Unit

Header
Wall

Header
Bracket

Trolley

Straight
Door
Arm

Emergency
Release
Rope & Handle

Door Bracket

Curved
Door
Arm

Garage
Door

Rail Tab

Belt

Rail

Access
Door

Safety
Reversing Sensor

Safety
Reversing Sensor

Gap between floor 
and bottom of door
must not exceed 
1/4" (6 mm).

Garage
Door

Header
Wall

Header
Bracket

Door
Bracket

Straight
Door
Arm

Curved
Door Arm

Trolley

Emergency 
Release
Rope & 
Handle

Rail

Belt

Rail Tab

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