Craftsman 139.535006 - Manual (Page 9)

Assembly
STEPS
Tighten the Chain and Cable
dAUTIONt Keep chain from twisting as nuts are
turned.
Loosen Tighten
Inner Outer
Chain
1/2 Inch
Base ot Tee Rail
PROCEDURE: Connect chain and cable to threaded
shaft of trolley in the order itiustrated: inner nut, lock-
washer, chain retainer bracket and outer nut
Tighten the chain and cable by threading outer nut
toward trolley.
Chain is properly tightened when it is approximately
1/2" above the base of Tee rail midway between
cable pulley bracket and chassis.
When chain tension is correct, turn inner nut toward
chain retainer bracket untii tight
Sprocket noise can result if chain is either too
loose or too tight.
CAUTION: Do not overtighten chain and cable.
Refer to Page 21.
STEP®
Attach Sprocket Cover to Opener Chassis
Sprocket
Cover '
PROCEDURE: Attach sprocket cover to chassis as
shown in Illustrations (A) and (B). insert back tab in
chassis slot. Then bend cover forward and insert
front tab in slot provided on mounting plate.
Mounting
Plate
ASSEMBLY OF YOUR GARAGE DOOR OPENER IS NOW COMPLETE.
CERTAIN INSTALLATION PROCEDURES VARY ACCORDING TO GARAGE DOOR TYPES. WHERE DIFFER­
ENCES OCCUR, BE SURE TO FOLLOW ONLY THOSE INSTRUCTIONS WHICH APPLY TO YOUR DOOR
CONSTRUCTION.
DO NOT WEAR WATCHES, RINGS OR LOOSE CLOTHING WHILE INSTALLING OR SERVICING A DOOR OPENER.
KEEP GARAGE DOOR BALANCED. STICKING OR BINDING DOORS MUST SE REPAIRED. GARAGE DOORS,
DOOR SPRINGS, CABLES, PULLEYS, BRACKETS AND THEIR HARDWARE MAY BE UNDER EXTREME TEN­
SION AND CAN CAUSE SERIOUS PERSONAL INJURY. DO NOT ATTEMPT ADJUSTMENTS. CALL A GARAGE
DOOR SERVICEMAN TO MOVE, LOOSEN OR ADJUST DOOR SPRINGS OR HARDWARE.