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ASSEMBLY STEP 4
Install the Chain &
Attach the Chain Spreader
1. Line up the holes in the chain spreader with the
holes in the motor unit as shown. The slot in the
chain spreader must fit over the flange.
2. Securely fasten the chain spreader with the
hardware provided.
3. Install the chain around the chain pulley and
toward the trolley.
4. Connect the chain to the retaining slot on the
trolley, as shown:
• From below, push pins of master link bar up
through cable loop and trolley slot.
• Push master link cap over pins and past pin
notches.
• Slide clip-on spring over cap and onto pin
notches until both pins are securely locked in
place.
5. With the trolley against the screwdriver, dispense
the remainder of the chain along the rail toward
the motor unit. Guide the chain around the
selected groove in the chain spreader (to engage
either the 8-tooth sprocket or the 6-tooth sprocket)
as shown. The sprocket teeth must engage the
chain.
NOTE: For door up to 3 metres in height use the 6-
tooth sprocket. For door over 3 metres in height use
the 8-tooth sprocket
6. Check to make sure the chain is not twisted, then
connect it to the threaded shaft with the remaining
master link, as illustrated.
• Push pins of master link bar through holes in end
of chain and trolley threaded shaft.
• Push master link cap over pins and past pin
notches.
• Slide clip-on spring over cap and onto pin
notches until both pins are securely locked in
place.
7. Insert the trolley threaded shaft through the hole in
the trolley. Be sure the chain is not twisted.
8. Hold the chain 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.
9. Remove the screwdriver.
114A2558F
To avoid possible SERIOUS INJURY to fingers from
moving garage door opener:
• ALWAYS keep hand clear of sprocket while operating
opener.
• Securely attach chain spreader before operating.
USE ONLY
THIS TYPE
AND SIZE
SCREW
Chain
Spreader
Chain
Spreader
Master Link
Clip-On Spring
Master
Link Cap
INSTALL CHAIN
Chain
IN THIS DIRECTION
Pulley
10
WARNING
CAUTION
Hex Screw
Washers
Slot
8-Tooth
Sprocket
Motor Unit
Mounting Plate
6-Tooth
Sprocket
Motor Unit
Mounting Plate
Master Link
Clip-On Spring
Master
Link Cap
Flat end
of Trolley
Threaded
Shaft
Pin
Notch
Master
Link Bar
Chain
Spreader
Chain
Pin
Notch
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