Manualshelf

Owner's Manual

ManualsBrandsChamberlain ManualsDoors & WindowsWhisper Drive 1/2 HP Belt Drive Garage Door Opener with MyQ Technology
12345678910
8
Assembly
STEP 4 Install the belt
1. Pull the belt around the idler pulley and toward the trolley.The ribbed side mustcontact the
pulley.
2. Hook the trolley connector into the retaining slot on the trolley.(a)
3. With the trolley againstthe screwdriver, dispense the remainder of the beltalong the rail
toward the motor unit around the sprocket.The sprocket teeth must engage the belt.(b)
4. Thread the inner nutand lock washer onto the trolley thread shaft(c).Checkto make sure the
beltis not twisted.
5. Insert the trolley threaded shaft through the hole in the trolley.Be sure the beltis not
twisted. (c)
6. Loosely thread the outer nutonto the trolley threaded shaft.
7. Remove the screwdriver.