Ryobi GD125 Operator's Manual page 37

When a garage door is fully closed, there shouldn't be
any space between the door and the garage floor. When a
door is fully open, it should provide enough clearance for
vehicles to travel safely underneath it. Use caution when
setting the open position for single-panel garage doors. If
a single-panel door is opened so far that it begins to slant
backwards, excessive bouncing and jerking may occur as
the door moves, see figure 68.
NOTICE:
Do not open or close the garage door using the indoor
keypad or remotes until the travel limits have been
properly set. Doing so could cause severe damage to
the garage door or the garage door opener.
 Connect the garage door opener to an AC power supply.
NOTE: Make sure the power supply is normal household
voltage, 120 volts, AC only, 60 Hz.
Before setting the travel limit:
 Pull the emergency release rope down and manually open
the garage door until the outer trolley engages the inner
trolley.
WARNING:
Confirm that the inner trolley is in the orientation shown
in figure 69. An incorrectly installed inner trolley could
result in the garage door opener operating in the opposite
direction from its intended movement and result in death
or serious personal injury from the moving garage door.
Once you begin setting the travel limits, you have two min-
utes to complete each step. If a step is not completed within
two minutes, travel limit information for the open and closed
position will be erased.
To set the travel limit for the open position:
 Press and hold the UP button for three seconds. After
you release the button, it will begin blinking and continue
blinking until the travel limit has been set.
 Press and hold the UP button to move the garage door
to the open position.
 For fine adjustments, press and release the UP or DOWN
buttons.
 Once the door is in the desired open position, press the
SET ( ) button to store the travel limit. Once the travel
limit is stored, the UP button will stop blinking and shine
continuously.
NOTE: If the safety sensors are obstructed during this
process, travel limit information for the open and closed
position will be erased.
INSTALLATION
Inner
Trolley
37 - English
Correct
(Fully Open Position)
Incorrect
(Fully Open Position)
Inner
Outer
Trolley
Trolley
Outer
Trolley
Release
Lever
Fig. 68
Fig. 69