8
Assembly
STEP 4 Install the chain
To avoid possible SERIOUS INJURY to finger from moving garage door opener:
l ALWAYS keep hand clear of sprocket while operating opener.
l Securelyattach chain spreader BEFORE operating.
1. Pull the cable around the idler pulley and toward the trolley.
2. Connectthe cable to the retaining slot on the trolley.(Figure 1)
a. Push pins of master linkbar through cable link and trolley slot.
b. Push master linkcap over pins and pastpin notches.
c. Slide the closed end ofthe clip-on spring over one of the pins. Push the open end of the
clip-on spring onto the other pin.
3. With the trolley against the screwdriver, dispense the remainder ofthe cable/chain along the rail
toward the motor unit into the sloton the chain spreader, around the sprocketonto the chain
spreader and continuing to the trolley assembly. The sprocket teeth must engage the chain.
(Figure 2)
4. Check to make sure the chain is nottwisted, then connect it to the threaded shaft with the
remaining master link.
5. Thread the inner nutand lockwasher onto the trolley thread shaft
6. Insert the trolley threaded shaftthrough the hole in the trolley.Be sure the chain is not twisted.
(Figure 3)
7. Looselythread the outer nut onto the trolley threaded shaft.
8. Remove the screwdriver.
HARDWARE
Master Link
Threaded Shaft
Lock Washer 5/16"-18Nut 5/16"-18
Figure 2
Sprocket
Figure 3
Threaded
Shaft
Front Rail
Section
(TO DOOR)
Inner
Nut
Lock
Washer
Master Link
Master
Link
Outer
Nut
Figure 1
a.
b.
c.
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