Craftsman 139.3043 owner manual Preparingyourgarage door, One-Piece Door

Models: 139.3043

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Preparingyourgarage door

Before you begin:

Disablelocks.

Removeany ropes connected to garage door.

Completethe followingtest to make sure your garage door is balanced and is not sticking or binding:

1.Lift the door about halfway as shown. Releasethe door. If balanced,it should stay in place,supported entirely by its springs.

2.Raiseand lower the door to see if there is any binding or sticking.

If your door binds, sticks, or is out of balance,call a trained door systems technician.

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To prevent possible SERIOUSINJURYor DEATH:

ALWAYScall a trained door systems technician if garage door binds, sticks, or is out of balance. An unbalanced garagedoor may NOTreversewhen required.

NEVERtry to loosen, move or adjust garagedoor, door

springs, cables, pulleys, brackets or their hardware,ALL of which are under EXTREMEtension.

DisableALL locks and removeALL ropes connected to garagedoor BEFOREinstalling and operating garagedoor opener to avoid entanglement.

To prevent damage to garage door and opener:

ALWAYSdisable locks BEFOREinstalling and operating the opener.

ONLY operate garagedoor opener at 120V, 60 Hzto avoid malfunction and damage.

Sectional Door

One-Piece Door

Tools needed

During assembly, installation and adjustment of the opener, instructions will call for handtools as illustrated below.

(optional)

_

Pencil

 

Tape Measure

Hack Saw

Drill

Drill Bits 3/16"

Wire Cutters

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5/16", and 5/32"

Screwdriver

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Stepladder

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Adjustable End Wrench

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Craftsman 139.3043 owner manual Preparingyourgarage door, One-Piece Door