14
Spring Washer
Nut
Ring Fastener
Hex Bolt
Clevis Pin X 2
HARDWARE
INSTALLATION STEP 7
Connect Door Arm to Trolley
Make sure garage door is fully closed. Pull the
emergency release handle to disconnect the outer trolley
from the inner trolley. Slide the outer trolley back (away
from the door) about 200 mm (Figures 1, 2 and 3).
Figure 1:
• Fasten straight door arm section to outer trolley with
the clevis pin. Secure the connection with a ring
fastener.
• Fasten curved section to the door bracket in the
same way, using the clevis pin.
Figure 2:
• Bring arm sections together. Find two pairs of holes
that line up and join sections. Select holes as far
apart as possible to increase door arm rigidity.
Figure 3:
• If holes in curved arm are above holes in straight
arm, disconnect straight arm. Cut about 150 mm
from the solid end. Re-connect to trolley with cut end
down as shown.
• Bring arm sections together.
• Find two pairs of holes that line up and join with
bolts, spring washers and nuts.
Pull the emergency release handle toward the opener at
a 45° angle so that the trolley release arm is horizontal.
Ring
Fastener
Door
Bracket
Clevis Pin
Curved
Door Arm
Straight
Door Arm
Clevis Pin
Outer Trolley
Lock
Washers
Nuts
Door Bracket
Bolts
Emergency
Release
Handle
Lock
Washers
Nuts
Bolts
Cut This End
200mm
Figure 1
Figure 2
Figure 3
Summary of Contents for MT3850EVO
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