Cable
Pulley
Cable
Loop
Master
Link Bar
Master Link
Clip-On Spring
Pin
Pin
Notch
Chain
Flat end
of Trolley
Threaded
Shaft
Master Link Cap
Master
Link Cap
Master Link
Clip-On Spring
Install Chain & Cable
In This Direction
ASSEMBLY STEP 4
For Sectional and One-Piece Doors Only
Install the Chain/Cable
and Attach the Sprocket Cover
INSTALLING THE
CHAIN/CABLE
1. Pull the cable loop from the
carton and fasten it to the
trolley with a master link from
the hardware bag (Figure 1).
•
Push pins of master link bar
through cable loop and hole
in front end of trolley.
•
Push master link cap over pins and past pin notches.
•
Slide clip-on spring over cap and onto pin notches until
both pins are securely locked in place.
2. With the trolley against the screwdriver, dispense the
cable around the pulley.
3. Continue along the rail and around the motor unit
sprocket (Figure 2). The sprocket teeth must engage the
chain. Continue forward to the trolley threaded shaft.
4. Use the second master link to connect the chain to the
flat end of the shaft (Figure 1).
Check to make sure the
chain is not twisted.
5. Remove the screwdriver.
ATTACHING THE SPROCKET COVER
Position the sprocket cover over the motor unit sprocket
so the three holes in cover align with the three holes in
mounting plate. Attach with #8x3/8" hex screws provided
(Figure 3).
13
To avoid possible SERIOUS INJURY to fingers from moving
garage door opener:
• ALWAYS keep hand clear of sprocket while operating opener.
• Securely attach sprocket cover BEFORE operating.
Motor Unit
Sprocket
Install Chain
In This Direction
Figure 2
Mounting
Plate
Sprocket
Hex Screws
#8x3/8"
Figure 1
Leave Chain
& Cable
Inside Carton to
Prevent Kinking.
Keep Chain & Cable
Taut When Dispensing
Figure 3