ASSEMBLY STEP 2
Fasten the Rail to the Motor Unit
•Insert a
•Remove the two bolts from the top of the motor unit.
•Place the “U” bracket, flat side down, on the motor unit and align the bracket holes with the bolt holes. Fasten with the previously removed bolts.
•Align the rail assembly with the top of the motor unit. Slide the rail end onto the “U” bracket, all the way to the stops that protrude on the top and sides of the bracket.
HARDWARE SHOWN ACTUAL SIZE
| Lock Nut |
Bolt |
ASSEMBLY STEP 3
Install the Idler Pulley
•Lay the belt beside the rail, as shown. Grasp the end with the hooked trolley connector and pass approximately 12" (30 cm) of belt through the window. Keep the ribbed side toward the rail, and allow it to hang until Assembly Step 5.
•Remove the tape from the idler pulley. The inside center should be
•Place the idler pulley into the window as shown.
•Insert the idler bolt from the top through the rail and pulley. Tighten with a 3/8" lock washer and nut underneath the rail until the lock washer is compressed.
•Rotate the pulley to be sure it spins freely.
•Insert a
To avoid SERIOUS damage to garage door opener, use ONLY those bolts/fasteners mounted in the top of the opener.
Bolts | Motor Unit |
| Belt Pulley |
“U” Bracket
Bolt
Cover
Protection 
Bolt Hole
| SLIDE RAIL TO |
| STOPS ON TOP |
| AND SIDES |
Lock Nut | OF BRACKET |
|
Bolt
Rail
Pulley 
Nut Washer
Idler Bolt | Screwdriver |
|
Bolt
Trolley
Stop Hole 
Grease
Inside Pulley
Idler Pulley
Lock Washer 3/8"
Nut 3/8"
Trolley |
|
|
Connector | Idler | Lock |
| ||
| Pulley | Nut |
HARDWARE SHOWN ACTUAL SIZE
Idler Bolt | Bolt | Lock Nut | Nut 3/8" | Lock Washer 3/8" |
9