Craftsman 139.53637SRT1 Owner's Manual download pdf (Page 11)

Assembly Step 5

Tighten the Chain & Cable

• Spin the inner nut and lock washer down the

threaded shaft, away from the trolley.

• To tighten the chain, tum outer nut in the direction

shown. As yon tum the not, keep the chain

from twisting.

• When the chain is approximately 1/2' above the

base of the T-rail at its midpoint, re-tightso the

inner nut to secure the adjustment.

Sprocket noise can result if chain is either too

loose or too Ught.

When installation is complete, you may notice some

chain droop with the door dosed. This is normal. If

the chain returns to the position shown when the

door is open, do not re-adjust the chain.

NOTE: During future maintenance, ALWAYS

pull the emergency release handle to disconnect

trolley before adjusting chain.

Lock

Outer Nut W_hw InnerNul

0 @

You have now finished assembling your garage door opener. Please read the following

warnings before I_roceeding to the Installation section:

IMPORTANT INSTALLATION INSTRUCTIONS

To reduce the risk of severn injury or death to persons:

1. READ AND FOLLOW ALL INSTALLATION INSTRUCTIONS.

2. install only on a properly balanced and lubricated garage door. An Improperly balanced door

may not reverse and could result In severe Injury or death. Repairs to cables, spring assemblies

and other hardware must be made by a profseslonal-service parson before Installing opener.

3. Disable all locks and remove all ropes connected to the garage door before Installing the opener.

Ropes connected to a garage door can cause entanglement and death.

4. If possible, Install door opener 7 feet or more above flops',with the emergency release handle

mounted 6 feet above the floor.

5. Do not connect the opener to power source until instructed to do so.

6. Locate the Wall Control within sight of the door bt a minimum height of 5 feet where small

children cannot reach and away from all moving parts of the door.

7. Install the User Safety Instruotlon Label on the well adjacent to the control button and the

Malntenanca Instruction Label In s prominent location on the Inside of the garage door.

8. Upon completion of the installation, the door must reverse when It comes in contact wifh a

one-Inch high object or a 2x4 laid flat on the floor.

9. Do not wear watches, rings or loose clothing while Instamng orservlclng an opener. Jewelry or

loose clothing can be caught in the mechanism of the garage door or the opener.

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Craftsman 139.53637SRT1 Owner's Manual Page 11

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