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GARAGE DOOR OPENER
1/2 HP
OWNER’S
MANUAL
Model No.
139.18847
139.18857
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.
The Chamberlain Group, Inc.
Cover - SEARS
4/16/92
®
■ Safety Precautions
■ Assembly
■ Installation
■ Adjustment
■ Care and Maintenance
■ Operation
■ Troubleshooting
■ Parts List
®
MD
®
MD
Sears Canada, Inc., Toronto, Ontario M5B 2B8