User's Manual

Assembly

STEP 4 Install the chain

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

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

a. Push pinsofmaster linkbar through cable linkand trolley slot.

b. Push master linkcap over pins and pastpin notches.

c. Slide clip-on spring over cap and onto pin notches until both pins are securely

locked in place.

3. With the trolley againstthe screwdriver, dispense the remainder ofthe cable/chain along the

rail toward the motor unitinto the sloton the chain spreader, around the sprocket onto the

chain spreader and continuing to the trolley assembly.The sprocket teeth mustengage the

chain. (b)

4. Check to make sure the chain is nottwisted,then connect it to the threaded shaftwith the

remaining master link.

5. Thread the inner nutand lockwasher onto the trolley threaded shaft.

6. Insert the trolley threaded shaft through the hole in the trolley.Be sure the chain isnot

twisted.(c)

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

8. Remove the screwdriver.

HARDWARE

Master

Link

Threaded Shaft

Threaded

Shaft

Outer

Nut

Front Rail

Section

(TO DOOR)

Inner

Nut

Lock

Washer

Master Link

Master

Link

Sprocket