ASSEMBLY STEP 4

Install the Belt

and Attach the Belt Cap Retainer

1.Pull the belt around the idler pulley and toward the trolley. The ribbed side must contact the pulley.

2.Hook the trolley connector into the retaining slot on the trolley as shown.

3.With the trolley against the screwdriver, dispense the remainder of the belt along the rail length toward the motor unit and around the sprocket. The sprocket teeth must engage the belt.

4.Check to make sure the belt is not twisted, then connect it to the flat end of the trolley threaded shaft with the master link, as illustrated:

ïPush pins of master link bar through holes in end of belt and trolley threaded shaft.

ïPush master link cap over pins and past pin notches.

ïSlide clip-on spring over cap and onto pin notches until both pins are securely locked in place.

5.Insert the trolley threaded shaft through the hole in the trolley. Be sure the belt is not twisted, and the ribbed side faces the rail.

6.Hold the belt at the trolley shaft as you thread the spring nut by hand onto the shaft until finger tight against the trolley. Do not use any tools.

7.Remove the screwdriver.

8.Position the belt cap retainer over the motor unit sprocket as shown and fasten to the mounting plate with 8x3/8" hex screws provided.

Idler Pulley

Spring Nut

WARNING

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.

HARDWARE SHOWN ACTUA L SIZE

Hex Screw 8x3/8"

Spring/Trolley Nut

Master Link

Clip-On Spring

Master Link Cap

 

 

 

 

 

Pin

 

 

 

Notch

 

 

Trolley

Master

 

 

Threaded

Link Bar

 

 

Shaft

 

 

 

Round

 

 

 

Hole

 

 

Retaining

 

 

Trolley

Slot

Hex Screws

 

Connector

8x3/8"

 

 

 

 

Belt Cap

Retainer

Motor Unit

Sprocket

Mounting

Plate

10