LiftMaster LJ8950W LJ8950W Manual - Page 5

Assembly, Attach the Drive Sprocket, Attach MountingBrackets, Attach the Drive, Sprocket

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Assembly 1 Attach the Drive Sprocket The door operator can be installed on either side of the door. The drive sprocket can be installed on the right or left side of the operator depending on your installation. The drive sprocket can be mounted in one of three positions to aid in the alignment of the drive sprocket with the door sprocket. 1. Insert the drive sprocket into the motor shaft. 2. Align the center holes in the drive sprocket with the hole in the motor shaft. 3. Insert bolts into the motor shaft and the drive sprocket. 4. Hand tighten the bolts. Motor Shaft Drive Sprocket Bolt Bolt 2 Attach Mounting Brackets The operator can be mounted to the wall with the mounting brackets provided. An optional mounting bracket Model 3950MB is available for purchase, see Accessories page 30. 1. Position two mounting brackets on each side of the operator. 2. Fasten the mounting brackets to the operator using the self-threading screws provided. Mounting Brackets 5

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5
The door operator can be installed on
either side of the door.
The drive sprocket can be installed on the
right or left side of the operator depending
on your installation. The drive sprocket can
be mounted in one of three positions to aid
in the alignment of the drive sprocket with
the door sprocket.
1.
Insert the drive sprocket into the
motor shaft.
2.
Align the center holes in the drive
sprocket with the hole in the motor
shaft.
3.
Insert bolts into the motor shaft and
the drive sprocket.
4.
Hand tighten the bolts.
The operator can be mounted to the wall
with the mounting brackets provided. An
optional mounting bracket Model 3950MB
is available for purchase, see Accessories
page 30.
1.
Position two mounting brackets on
each side of the operator.
2.
Fasten the mounting brackets to the
operator using the self-threading
screws provided.
Attach the Drive
Sprocket
Attach Mounting
Brackets
Assembly
1
2
Mounting Brackets
Motor
Shaft
Drive Sprocket
Bolt
Bolt