Manual

Assembly Step 4
Attach the Chain
& Rail Support Bracket
• Remove the chain end from the carton and fasten
it to the trolley with a master linkfrom the
hardware bag. See master link procedure,
Figure 1.
• With the trolley against the screwdriver, dispense
the chain around the pulley.
• Proceed back around the rail to the opener,
Figure 2. Guide the chain around the chain
spreader and sprocket. Be sure sprocket teeth
engage the chain.
• Continue forward to the trolley threaded shaft,
Figure 3.
• Use the second master link to connect the chain
to the flat end of the shaft. If necessary, loosen the
outer nut on the trolley to obtain more chain slack.
Check to make sure the chain is not twisted.
• Remove the screwdriver.
Figure I
Master Link Procedure:
Push pins of master link bar through
ct_ain end and hole in front end of
trolley. Push cap over pins and past
notches. Slide clip-on spdng over
cap and into notches until both pins
are securely locked.
Chain Chain
Pulley \
Bracket
Install Chain
In This Direction
To attach the rail support bracket:
• Position the railsupport bracket on the opener.
• Attach the bracket to the rail with 1/4"20x5/8" hex
screws and lock washers.
• Attach the bracket to the opener by inserting a
5/16"-18xl/2" washered screw through a hole in
each side flange and a matching hole in the
bracket. Complete the connection by inserting the
#8-32x3/8" screw through the back flange and the
hole in the rail support.
Hardware Shown Actual Size
Hex Screw Washered Screw Lock Washer #8-32x_'8"
1;4"-20XS/8" 5116"-18x112"
Chain_,%orodmt
" Figure 2 _ M_rUnk
,,/,,, ClkPC_Spdng
Master
Rat End
of Trolley
MLSt ef Unk Th,laded
Ctip-On Spdng Shaft
Master
Chain
Rail
Pin Notch
Tr=rsy Figure 3
Master
[Jnk Bar
114"-20x5/8"HsxScrews
with LOCkWasherS e8-32x3/8"
Bracket ; _ i V Ogener
Back Range
Opener
S_de Fisnge