Then set the opener on a ladder where you re going to install it.
How to install a sears chain drive garage door opener.
Remove the chain and cable assembly.
Pull out the idler pulley bolt and slide the idler pulley out of the rail window.
Thread the nut s facing the door clockwise until it meets the bracket then release the chain.
The craftsman series 100 garage door opener 57933 can lift the heaviest garage doors with a powerful 1 2 hp ac motor.
Follow the manufacturer s instructions to assemble the opener and mount the rail to the header bracket above the door.
Pull the chain toward the garage door and hold it in position.
Disconnect the trolley threaded shaft from the chain by removing the master link clip on spring master link cap and master link bar.
My sears chain drive garage door opener s main gear is worn.
I replaced just the main gear with the sprocket and shaft assembly for 25 or so from a supplie.
Easy consistent garage access.
Pull the chain cable out of the rail window.
Grasp the chain 1 foot from where it connects to the end of the threaded chain anchor.
How to install a sears chain drive garage door opener.
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This video demonstrates how to assemble and install a chamberlain chain drive garage door opener in a garage with a sectional door and a finished ceiling.
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