Assembly; Models 8355W And 8355W-267 - Chamberlain 8355W Manual

Assembly

1 Attach the Rail to the Garage Door Opener

MODELS 8355W AND 8355W-267

To avoid possible SERIOUS INJURY to finger from moving garage door opener:
• ALWAYS keep hand clear of sprocket while operating opener.
• Securely attach sprocket cover BEFORE operating.
To avoid SERIOUS damage to garage door opener, use ONLY those bolts/fasteners mounted in the
top of the 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. Remove bolt and lock nut from the top of the garage door opener.
2. Align the rail and the styrofoam over the sprocket. Cut the tape from the rail, belt, and
styrofoam.
3. Fasten the rail with the previously removed washered bolt and lock nut.
4. Position the belt around the garage door opener sprocket.
5. Attach the sprocket cover over the garage door opener sprocket and attach with hex screws.
Washered Bolt 5/16"-18x1/2"
(Mounted in the garage
door opener)
Washered Bolt
5/16"-18x1/2"
9
HARDWARE
Lock Nut Hex Screw
#8x3/8"
(Mounted in the
(Packed with the
garage door opener)
sprocket cover)
Hex Screw
#8x3/8"
Lock
Nut