Master Link Set
(Including 1x spare set)
x 2
x 1
End Segment with Trolley Stop Bolt (53-1/5 inch)
Extended Chain Segment (approx. 40-4/5 inch)
Kit Inventory
x 1
Components Required from Opener Inventory
End Segment with Trolley Stop Bolt
(53-1/5 inch)
Header Segment (53-1/5 inch)
WARNING
- Discard all FIVE of the original rail segment.
- ONLY 3 pieces of extended rail segment should be applied. NEVER connect extra rail segments.
- The opener only services door to max. of 10 FT. height. Door, with other size please call service before installation.
STEP 1. To Assemble Rail with “Extended Middle Segment”
Middle Segment (53-1/5 inch)
GARAGE DOOR OPENER EXTENSION KIT
MODEL: 425-1671
WARNING
To prevent SERIOUS INJURY or DEATH:
- DO NOT connect power until instructed.
- CLOSE the door before installation.
Extended Cable
(approx. 144-1/2 inch)
x 1
Chain
Trolley Shaft
and Cable
Please refer to “Rail and Trolley Assembly” in Owner’s Manual.
Trolley
1
Rail — Header Segment
Rail — Middle Segment
Rail — End Segment with Trolley Stop Bolt
www.gdohelp.com
1-877-GDO-4402
1-877-436-4402
2301 Traffic St NE
Minneapolis, MN 55413
Discard all 5 segments from original opener
x 1
Middle Segment (53-1/5 inch)
x 1
Header Segment (53-1/5 inch)
