Operation Manual

Threaded

Shaft

Outer

Nut

Front Rail

Section

(TO DOOR)

Inner

Nut

Lock

Washer

Master Link

Master

Link

Sprocket

To avoid possible SERIOUS INJURY to ﬁ ngers from moving garage door opener:

• ALWAYS keep hand clear of sprocket while operating opener.

• Securely attach chain spreader BEFORE operating.

Assembly

STEP 4 Install the chain

1. Pull the cable around the idler pulley and toward the trolley.

2. Connect the cable to the retaining slot on the trolley. (a)

a. Push pins of master link bar through cable link and trolley slot.

b. Push master link cap 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 unit around the sprocket and continuing to the trolley assembly. The sprocket

teeth must engage the chain. (b)

4. Check to make sure the chain is not twisted, then connect it to the threaded shaft with the

remaining master link.

5. Thread the inner nut and lock washer onto the trolley threaded shaft.

6. Insert the trolley threaded shaft through the hole in the trolley. Be sure the chain is not twisted. (c)

7. Loosely thread the outer nut onto the trolley threaded shaft.

8. Remove the screwdriver.

HARDWARE

Master

Link

Threaded Shaft