Chamberlain 1240R - 1/4HP - Manual (Page 9)

9
ASSEMBLY STEP 1
Fasten the Rail to the Motor Unit
MODELS 1256R and 1246R ONLY
• Remove the two washered bolts mounted in top of
motor unit.
• Align rail and styrofoam over sprocket.
• Cut tape from rail, chain and styrofoam. Remove
styrofoam and pull the chain back (away from the
mounting plate).
• Fasten the rail with the two washered bolts
previously removed. Tighten securely.
Use only these bolts! Use of any other bolts will
cause serious damage to door opener.
USE ONLY THIS
TYPE AND SIZE
BOLT
Washered
Bolts
5/16"-18x1/2"
Chain
Rail
Styrofoam
Packaging
Motor
Unit
Sprocket
Washered Bolts
5/16"-18x1/2"
Styrofoam
Packaging
Mounting
Plate
USE ONLY THIS
TYPE AND SIZE
BOLT
To avoid SERIOUS damage to garage door opener,
use ONLY those bolts/fasteners mounted in the top of
the opener.
WARNING
CAUTION WARNING
WARNING