Craftsman 139.53963SRT User Manual

Page of 40
GARAGE DOOR OPENER
1/2 HP
Owner’s
Manual
Model No.
139.53963SRT
For Residential Use
Only 
Caution:
Read and follow all
safety rules and
operating instructions
before first use of this
product.
Fasten the manual
near the garage door
after installation.
Complies with UL 325
regulations effective
January 1, 1993
®
Safety Precautions
Assembly
Installation
Adjustment
Care and Maintenance
Operation
Troubleshooting
Parts List
®
Sears, Roebuck and Co., Hoffman Estates, IL 60179 U.S.A.