Hardware Inventory - Craftsman 139.53978SRT Owner's Manual

Separate all hardware from the packages in the rail carton and the opener carton, as
shown below, for the assembly and installation procedures.
ASSEMBLY
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Lock Nut Lock Washer Nut
1/4"-20 (2) 3/8' (1) 3/8" (1)
Bolt 1/4"-20 x 1-5/4" (2)
Chain Spreader (2)
TroUey Threaded Shaft (1)
Master
Link(2)
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U
Idler Bolt (1)
INSTALLATION
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Hex Screw Spacer (2) Nut Lock Washer Ring
5/16'-18x7/8" (4) 5/16"-18 (8) 5/16" (7) Fastener (3)
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5/16"-18xl-7/8" (2) 6ABx1-1/4 ° (2) 6-32x1" (2) Anchors (2)
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Clevis Pin CleVis Pin Clevis Pin Insulated
5/16"x1-1/2" (1) 5/16"xl" (1) 5/16"x1-1/4" (1) Staples (10)
SAFETY REVERSING SENSOR
Carriage Bolt Insulated
1/4"-20xl/2" (2) Wing Nut (2) Staples (20)