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8
Assembly
STEP 4 Install the chain
To avoid possible SERIOUS INJURY to fingersfrom moving garage door opener:
ALWAYS keep hand clear of sprocket while operating opener.
Securelyattach chain spreader BEFORE operating.
1. Pull the cable around the idler pulley and toward the trolley.
2. Connectthe cable to the retaining sloton the trolley.(a)
a. Push pins ofmaster link bar through cable link and trolley slot.
b. Push master linkcap over pins and past pin notches.
c. Slide clip-on spring over cap and onto pin notches until both pins are securely
locked in place.
3. With the trolley against the screwdriver, dispense the remainder of the cable/chain along the
rail toward the motor unitinto the slot on the chain spreader, around the sprocket onto the
chain spreader and continuing to the trolley assembly and continuing to the trolley assembly.
The sprocketteeth mustengage the chain.(b)
4. Thread the inner nutand lockwasher onto the trolley threaded shaft.
5. Insertthe trolley threaded shaft through the hole in the trolley.Be sure the chain isnot
twisted. (c)
6. Loosely thread the outer nutonto the trolley threaded shaft.
7. Remove the screwdriver.
HARDWARE
Ma
ster
Link
Threaded Shaft
Chain Link
c.
Threaded
Shaft
Outer
Nut
Front Rail
Section
(TO DOOR)
Inner
Nut
Lock
Washer
Master
Link
Master
Link
b.
a.
Sprocket
9


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