Chamberlain MR850 Garage Door Opener User Manual


 
5
Release cable
R
ope
Manual Release
Warning Label
Release handle
Overhand knot
Optional accessory not provided
Align the extension pole holes with the drive legs.
Insert the extension poles into the drive leg and fix in
place using screws provided.
Slide the reinforcing brace over the poles and fix in
p
lace using the screws provided.
ATTACHING EXTENSION POLES (IF REQUIRED)
1
0
LEFT / RIGHT HAND INSTALLATION
11
LEFT
(handing must be
changed during limit
setting, section 13)
RIGHT
(factory
default
setting)
Inside garage looking out
Reinforcing brace must be used. Use
extension pole kit part number 001B6449-1