Ste p 5, Tighten the chain and cable – Craftsman 139.53403 User Manual
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STE P 5
Tighten the Chain and Cable
Tighten
Outer
Nut
o
o
o
^
1^3
Troltey
Lock
Washer
Chain
1/S Inch
CAUTION: Keep the chain from twisting as nuts
are turned.
PROCEDURE: Thread the outer nut toward trolley as
shown (Loosen inner nut first, if necessary).
Tension is correct when the chain is approximately
1/2" above base of Tee rail midway between cable
pulley bracket and chassis.
To maintain proper tension, turn inner nut toward chain
retainer bracket until tight
Sprocket noise can result if chain is either too
loose or too tight.
CAUTION: Do not overtighten chain and cable.
Refer to Pages.
Base of Tee Rail
ASSEMBLY OF YOUR GARAGE DOOR OPENER IS NOW COMPLETE.
BEFORE YOU PROCEED WITH THE INSTALLATION OF YOUR GARAGE DOOR OPENER BE SURE TO
COMPLY WITH THE FOLLOWING SAFETY RULES:
KEEP GARAGE DOOR BALANCED. STICKING OR BINDING DOORS MUST BE REPAIRED. THE
GARAGE DOOR, THE DOOR SPRINGS, CABLES, PULLEYS, BRACKETS ANDTHEIR HARDWARE
MAY BE UNDER EXTREME TENSION AND CAN CAUSE SERIOUS PERSONAL INJURY. DO NOT
ATTEMPT ADJUSTMENTS. CALLAGARAGE DOOR SERVICEMAN TO MOVE, LOOSEN OR ADJUST
DOOR SPRINGS OR HARDWARE.
DO NOT WEAR WATCHES, RINGS OR LOOSE CLOTHING WHILE INSTALLING OR SERVICING A
DOOR OPENER.
AS YOU PROCEED WITH THE REMAINING INSTRUCTIONS IN THIS OWNERS MANUAL, YOU MAY FIND IT
HELPFUL TO REFER TO THE FOLLOWING ILLUSTRATION OF THE FULLY ASSEMBLED AND INSTALLED
GARAGE DOOR OPENER.
IT IS RECOMMENDED THAT THE OPENER BE INSTALLED 7 FEET OR MORE ABOVE THE FLOOR
WHERE SPACE PERMITS.
CERTAIN INSTALLATION PROCEDURES VARY ACCORDING TO GARAGE DOOR TYPES. WHERE THE
DIFFERENCES OCCUR, BE SURE TO FOLLOW ONLY THOSE INSTRUCTIONS WHICH APPLY TO YOUR
DOOR CONSTRUCTION.
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