knot around the “horizontal angle” using a 3 hole clip, as shown. Insert one end of the small
“S” hook into the “horizontal angle” with the 3 hole clip and the other end into the second slot
of the horizontal angle, as shown. Insert one end of the small “S” hook into the “horizontal
angle” with the 3 hole clip and the other end into the second slot of the horizontal angle, as
shown. Repeat for the other side.
Horizontal
track
Spring restraint
cables
Rear back
hang
Extension
springs
3 Hole clip
Special
knot
Counterbalance
lift cable
Hook
plate
Extension
springs
Small
“S” hook
Large “S”
hooks
Small
“S” hook
3/8”-16 x 1-1/4”
Hex head bolt
3/8” - 16
Hex nut
Sheave
fork
Rear cable
lift sheave
IMPORTANT: CLOSE “S” HOOKS AND EYE BOLTS WITH LOCKING PLIERS, TO PREVENT
SPRINGS FROM COMING LOOSE.
WARNING
FAILURE TO CLOSE “S” HOOKS AND EYE BOLTS CAN RESULT IN SEVERE
OR FATAL INJURY IF SPRINGS COME LOOSE.
Close
small “S”
hook
Close large
“S” hook
Close large
“S” hook
Small “S”
hook
Large “S”
hooks
Close
eye bolts
Eye bolts
Counterbalance Lift Cable Adjustments
20
Adjust counterbalance lift cables to create about 1” to 2” (25 mm to 50 mm) of initial exten-
sion spring stretch, with the door in the fully opened position. Measure relaxed extension
spring length for your door height and verify with the chart below. Spring length must be the
same for both extension springs to allow even door balance. Carefully remove the locking
pliers from the horizontal track and lower the door into the closed position. Once the door is
closed, measure the extension spring length in tension for both sides. Using the chart, verify
the spring length in tension is correct with your door height.
NOTE: It may be necessary to adjust spring length for proper door balance.
Door Height Spring Length Relaxed (Door
Open)
Spring Length Extended
(Door Closed)
6’ 0” 25” (635 mm) 61” (1549 mm)
6’ 3” 25” (635 mm) 62-1/2” (1588 mm)
6’ 6” 25” (635 mm) 64” (1626 mm)
Door Height Spring Length Relaxed (Door
Open)
Spring Length Extended
(Door Closed)
7’ 0” 25” (635 mm) 67” (1702 mm)
7’ 6” 27” (686 mm) 72” (1829 mm)
7’ 9” 27” (686 mm) 73-1/2” (1867 mm)
8’ 0” 27” (686 mm) 75” (1905 mm)
Balancing Door
21
Lift door and check its balance. If door rises off floor more than 2 ft. under spring tension
alone, reduce spring tension by adjusting extension spring length, moving the “S” hook back-
ward (towards the rear back hangs) to a different hole in the horizontal track. If the door is
hard to rise or drifts down on its own, adjust extension spring length by moving the “S” hook
forward (towards the header) to a different hole in the horizontal track. A poorly balanced
door can cause garage door operator problems.
IMPORTANT: WHENEVER ADJUSTING EXTENSION SPRING LENGTH FOR DOOR BALANCE,
ALWAYS OPEN THE DOOR TO THE FULLY OPEN POSITION AND RETURN THE LOCKING
PLIERS, AS SHOWN IN F3 TO THE HORIZONTAL TRACKS BELOW THE BOTTOM TRACK
ROLLERS.
If the door still does not operate easily, raise the door into the open position, return the lock-
ing pliers, and recheck the following items:
1.) Is the door level?
2.) Are the flag angles level and plumb?
3.) Does the distance between the flag angles equal door width plus 3-3/8” to 3-1/2”?
4.) Do the counterbalance lift cables have equal tension? Adjust by re-tieing the special knot,
if necessary.
5.) Make sure door is not rubbing on jambs.
IMPORTANT: IF DOOR STILL DOES NOT BALANCE PROPERLY, THEN CONTACT A TRAINED
DOOR SYSTEM TECHNICIAN.
Attaching Weather Seal
22
Permanently attach the weatherstrips on both door jambs and header. The weatherstrips
were temporarily attached in Preparing the Opening, in the pre-installation section of this
manual.
NOTE: When permanently attaching the weatherstrips to the jambs, avoid pushing the weath-
erstrips too tightly against the face of door.
Weather seals
Nail
Weather
Jamb
Weather seal
Jamb
Header
Jamb
Nail
NOTE: Door not shown for clarity.
Label Placement
23
IMPORTANT: USING THE ILLUSTRATION, ATTACH THE APPROPRIATE LABELS TO THE AP-
PROPRIATE LOCATION ON THE SECTION, AS SHOWN.
NOTE: The Spring Warning tag(s) are factory attached (one per spring).
NOTE: Because of different configurations, some labels may require minor relocations.
13
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