Assembly Section - Pages; Assembly Step - Chamberlain 1000SD 1/3 HP Owners Manual

ASSEMBLY STEP 1

Fasten the Rail To the Power Unit
NOTE: To aid in assembly and installation, replace
the foam packing around the power unit. Remove it
after Installation Step 5.
ASSEMBLY STEP 2
Install the Trolley
to install it facing correctly: the trolley release arm must
be horizontal (lock position), with its arrow pointed
away from the power unit.
Assembly Section: Pages 6 - 7
Be certain
Hardware Shown Actual Size