5
ASSEMBLY STEP 1
Assemble the Sectional Rail (if used)
If using 1-Piece Rail Proceed to Step 5
To avoid installation difficulties, do not run the
garage door opener until instructed to do so.
• Place rail pieces on flat surface for assembly (all four
sections are interchangeable).
• Slide rail brace onto rail section.
• Connect rail by sliding rail brace onto next rail section.
• Tap rail assembly on piece of wood until rail sections
are flush (repeat with remaining rail sections until rail
assembly is complete).
ASSEMBLY STEP 2
Install the Belt
• Remove belt from carton and lay it out on the floor, (be
careful not to allow the belt to twist).
• Hook the trolley connector into the connector slot on
the inner trolley assembly.
Direction Arrow
Header End
Rail Assembly
Pulley Bracket
Inner Trolley
DOOR
Rail Assembly
Wood
Rail Section
Brace
Rail Section
Connector Slot
Trolley Connector
Inner Trolley Assembly
ASSEMBLY STEP 3
Insert the Belt into the Rail
• Slide pulley bracket and inner trolley into back (opener
end) of rail assembly, ensuring the pulley bracket is
inserted as shown with arrow pointing toward front
(header end) of the rail assembly.
• Push Pulley Bracket through to the Header End of the
rail.
Summary of Contents for MT3850EVO
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