Assembly step 4, Install chain and cable – Craftsman 1/2HP Garage Door Opener 139.53515SR User Manual
Page 8
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Assembly
STEP 4
Install Chain and Cable
DO NOT REMOVE CHAIN AND CABLE FROM CARTON.
Detach cable from side of carton. Remove master links
from coin envelope. .
MASTER LINK PROCEDURE: Insert pins of master link
bar through cable loop and hole in front end of trolley (A)
as shown. Push cap over pins and onto notches. Slide clip-
on spring over cap and onto pin notches until pins are
locked in place.
Caution: Keep the chain taut while installing to help
prevent kinking.
With trolley against the screwdriver, dispense cable around
pulley. Proceed back around opener sprocket (B)- be sure
sprocket teeth engage chain- and forward to the threaded
trolley shaft (C).
Use second master link to connect the chain to the flat
end of shaft as shown. Check to
make sure
chain is not
twisted.
Install Chain
Master Link
instaJI Chain and Cable
In This Direction
Sprocket
Cover
Tab Slot
Mounting
Plate
ATTACH SPROCKET COVER TO CHASSIS:
insert back tab in chassis slot. Then bend cover forward
and insert front tab in slot provided on mounting plate.