12
Master
Link Bar
Flat End
of Trolley
Trolley
Pin
Pin Notch
Flat End of
Threaded Shaft
Master Link
Clip-On Spring
Master
Link Cap
Install Chain
In This Direction
Chain
Pulley
Bracket
ASSEMBLY STEP 4
For Sectional and One-Piece Doors Only
Install the Chain
1. Dispense a few inches of chain
from carton and fasten to trolley
with a master link from the
hardware bag (Figure 1).
• Push pins of master link bar
through chain link and hole in
front end of trolley.
• 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.
2. With the trolley against the screwdriver, dispense the chain
around the chain sprocket bracket.
3. Continue along the rail and around the motor unit sprocket
(Figure 2). Proceed back around the correct groove in the chain
spreader (Figure 3). The sprocket teeth must engage the chain.
4. Use the second master link to connect the chain to the fl at end
of the shaft (Figure 1).
Check to make sure the chain is not
twisted.
5. Remove the screwdriver.
To avoid possible SERIOUS INJURY to fi ngers from moving
garage door opener:
• ALWAYS keep hand clear of sprocket while operating opener.
• Securely attach sprocket cover BEFORE operating.
Figure 2
Figure 1
6-Tooth
Sprocket
Mounting
Plate
Chain
Spreader
8-Tooth
Sprocket
Mounting
Plate
Chain
Spreader
Figure 3
One-Piece Doors
6- Tooth Sprocket Application
Sectional Doors
8-Tooth Sprocket Application
(6-Tooth sprocket can be used if slower travel speed is
desired.)
Chain
Sprocket
Bracket
Chain
Spreader
Motor Unit
Sprocket
Install Chain
In This Direction
ONE-PIECE DOORS
SECTIONAL DOORS
Deje la cadena y
el cable dentro del
cartón para evitar
que se tuerzan.
Mantenga tensos el cable
la cadena mientras los alimente.
Leave Chain Inside
Carton to Prevent
Kinking
Keep Chain Taut When
Dispensing
