Craftsman 139.53785 Owner's Instructions page 2

15. Pull the belt around th_ Idler pulley and hook the
trolley connector into the retaining slot on the trolley
as shown in Figure 4. The fibbed side must contact
tbepu/_y.
16. With the trolley against the pliem, dispense the
remainder of the belt along the rail assembly toward
the powerhead and around the sprocket. The
sprocket teeth must engage the belt.
17. Check to make sure the bolt is not twisted, then
connect it to the fiat end of the trolley threaded shaft
with the master |ink, as shown:
• Push pins of master link bar through holes in end
o1bert and trolley threaded shaft.
• Push master link cap over pins and past pin
notches.
• SUde dip-on epring over cap and onto pin notches
unti| both pins are securely locked in place.
18. Insert the trolley threaded shaft through the hole in
the trolley. Be sure the belt is not twistS, and the
fibbed side faces the rail
19. Hold the bert at the trolley sh_ft as you three,d the
spring nut by hand (Figure 5) onto the shaft until
finger tight against the trolley. Do not use any tools.
20. Remove the Iocldng pliers.
21. Set the belt tension:
• Insert a screwdrivertip into one o_the nut ring slots
and txe e ¢rr yag nstthetroney, as
• Place a 7/16' opefl end wreflch no the square end.
Rotate the nut ebout 1/4 turn untUthe spdng raieases
and sneps the out ring agolnst ti_e trolley,Rgure 6.
Thissetsmespring to opSrnum b e|ttensinn.
22. Replace the belt cap retainer and complete the re-
installation and adjustment of your opener accon:ling
to your owner's manual.
23. Replace the old emergency release rope with the
new, longer replacament rope.
24. Reconnect power and operate the door in the UP
direction.
25. Increase the UP travel limit by turning the UP limit
adjustrnent screw in a olockwtse direc_on as shown
on label. One turn equals 2" of travel
Idlel Pulhby
Hole
• e_Jm S
Slot
End
Trolley
_._ER RELEASI_
1-1)4"
part No. Oe_rlpUen
183C158-11 ..... Header tail extension ........ 1
183C157-8 ...... Center rail extension ........ 1
1A5250-2 ....... 10' Belt Assembly ........... 1
26A53 ......... Rope ..................... 1
1A995 ......... Master Unk Kit ............. 1
1A5019 ........ Spring Nut Assembly ........ 1
2
01999,Sear=,Roebuck & Co.
/dl Rights I=k_m_d
114A2407 Pdntedin Mexico