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Chamberlain 8355 - Assembly; Attach the Rail to the Garage Door Opener

Chamberlain 8355
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4
To avoid possible SERIOUS INJURY to finger from
moving garage door opener:
ALWAYS keep hand clear ofsprocket while
operating opener.
Securelyattach sprocketcover BEFORE
operating.
To avoid SERIOUS damage to garage door
opener, use ONLY those bolts/fasteners
mounted in the top of the opener.
Washered Bolt
5/16"-18x1/2"
(Mounted
in the
garage door opener)
HARDWARE
Hex Screw
#8x3/8"
(Packed with
the
sprocket cover)
Lock Nut
(Mounted in the
garage door opener)
NOTE: ONLY use the bolts removed from the
garage door opener. Place the garage door
opener on the packing material to prevent
scratching.
1.1 Remove boltand lock nut from the top
of the garage door opener.
1.2 Align the rail and the styrofoam over the
sprocket.Cutthe tape from the rail,belt,
and styrofoam.
1.3 Fasten the rail with the previously
removed bolts.
Fasten the rail with the previously
removed washer bolt and locknut.
1.4 Position the beltaround the garage
door opener sprocket.
1.5 Attach the sprocket cover over the
garage door opener sprocket and
attach with hex screws.
Hex Screw
#8x3/8"
Washered Bolt
5/16"-18x1/2"
Lock
Nut
Assembly
1 Attach the rail to the garage door opener

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