Honda 2003 ST1300lA Owner's Manual page 87

The front seat can be adjusted to one of three positions in 0.6 in (15 mm)
increments.
Adjust the height according to your preference as described below.
To Adjust the Height of the Seat
1. Remove the front and rear seats (page 84).
2. Slide the seat height adjuster toward the rear, then set it in the guide.
seat height adjuster
Be sure to align the hole in the rear of the front seat with the adjuster when
install the front seat.
3. Install the front and rear seat (page 84).
Seat Removal
guide
LOW position
MID position
HIGH
Servicing Your Honda
85