Sears 39.18205SR - 1/2 HP Owner's Manual page 9

ASSEMBLY STEP 4
Install Chain//cable &
Attach Sprocket Cover
Detach cable loop from carton and fasten to trolley
with a master link from coin envelope.
MASTER LINK PROCEDURE: Push pins of master
link bar through cable loop and hole in front end of
trolley (See Figure A,) Push cap over pins and into
notches until both pins are securely locked.
Caution: Keep the chain and cable taut during
installation to help prevent kinking..
Install Chain and Cable
In This Direction
With trolley against screwdriver, dispense cable
around pulley. Proceed back around opener sprocket
as shown in Figure B (be sure sprocket teeth engage
chain) and forward to threaded trolley shaft (See
Figure C.)
Use second master link to connect chain to flat end of
shaft. Check to make sure the chain is not
twisted.
REMOVE THE SCREWDRIVER.
Sprocket
Cover
Tab Slot
TIGHTEN CHAIN/CABLE
CAUTION: Keep the chain from twisting as nuts
are turned.
Thread inner nut on the trolley in the direction shown.
(loosen outer nut first if necessary.)
Tension is correct when chain is approximately 1/2"
above base of Tee rail. midway between cable pulley
bracket and opener. To maintain proper tension,
tighten outer nut as shown.
Sprocket noise can result if chain is either too
loose or too tight.
CAUTION: Do not overtighten chain. (See Page 6).
AUTION: DO NOT REMOVE THE CHAIN/CABLE
C
FROM THE DISPENSER CARTON
A
Cable
Loop
Cable
Pulley
ATTACH SPROCKET COVER TO OPENER: Insert
back tab in opener slot. Bend cover forward and insert
front tab in slot on mounting plate.
Mounting
Plate
9
C
Master Link
Clip-On Spring
Flat End of
Threaded Shaft
Master
Link Cap
Trolley
Master
Link
Opener Chassis
Sprocket
Tighten
Inner
Nut
Trolley
Base of Tee Rail
Master Link
Clip-On Spring
Master
Link Cap
Chain
T-Rail
Pin Notch
Pin
B
Install Chain
In This Direction
Tighten
Lock
Outer
Washer
Nut
Chain
1/2 Inch