Precor p80 - Manual (Page 53)

Beginning Your Workout
51
Adjusting the Workout Intensity
To adjust the equipment incline, speed, and/or resistance,
use the motion controls located just below the console keys.
Figure 16: Motion controls
Adjust the motion controls, upward or downward, to change
the incline, speed, or resistance.
Figure 17: Adjust motion controls up or down
Many preset workouts will adjust these settings automatically
to meet the workout intensity. At any time during a workout,
you can adjust control settings and override the default
workout settings.