Craftsman 139.536481DM Owner's Manual page 10

ASSEMBLY STEP 4
Install the Chain/CableandAttachthe SprocketCover
INSTALLING THE CHAIN/CABLE
1. Pull the cable loop from the carton and fasten it to the trolley
with a master link from the hardware bag (Figure 1).
• Push pins of master link Leave Chain &
bar through cable loop and
hole in front end of trolley.
• Push master link cap over
pins and past pin notches.
• Slide clip-on spring over
cap and onto pin notches
until both pins are securely
locked in place.
Cable Inside
Dispensing
Carton to
king
Keep Chain and Cable
Taut When Dispensing
2. With the trolley against the screwdriver, dispense the cable
around the pulley.
3. Continue along the rail and around the motor unit sprocket
(Figure 2). The sprocket teeth must engage the chain. Continue
forward to the trolley threaded shaft.
4. Usethe second master link to connect the chain to the flat end
of the shaft (Figure 1). Checkto make sure the chain is not
twisted.
5. Removethe screwdriver.
ATTACHING THE SPROCKET COVER
Insert the back tab in the slot on the back of the mounting plate.
Squeezethe cover slightly and insert the front tab (Figure 3).
To avoid possible SERIOUSINJURYto fingers from moving
garage door opener:
• ALWAYS keep hand clear of sprocket while operating opener.
• Securely attach sprocket cover BEFORE operating.
FigureI
MasterLink
Clip-On Spring,
Master"_
Master Link Flat end Link Cap i _ -
Clip-On Spring , of Trolley _ yf
Master _ _ Threaded Shaft.x¢_.,, y._..
_boLi:k Cap[_, _'_ _,i" _Rt! Chain
f -¢--_._ d:Y'<"-Master
INSTALLCHAIN& CABLE
IN THIS DIRECTION
Figure3
Sprocket
Cover
Figure2 Motor Unit
Sprocket
10