Craftsman 1/2 HP GARAGE DOOR OPENER 139.53978SRT User Manual

Crhftsmbn, Garage door opener, Owner’s manual

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Owner’s Manual

CRHFTSMBN*

1/2 HP

GARAGE DOOR OPENER

For Residential Use Only

Model No:
139.53978SRT

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

Maintenance

Operation

Troubleshooting

Parts List

Sears, Roebuck and Co., Hoffman Estates, IL 60179 U.S.A

Visit our Craftsman website: www.sears.com/craftsman

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Table of contents