Precor 776i - Manual (Page 11)

Product Owner's Manual: Treadmill Safety Features 9
Turning the Treadmill On and Off
To turn the treadmill On and Off, use the power switch located
beneath the hood, near the power cord receptacle.
Important: When it is not being used, turn the treadmill Off.
Weight Limit
You should not allow runners over 350 lb. (160 kg) or walkers
heavier than 500 lb. (225 kg) on the treadmill.
Location
It is important to keep the area around the treadmill open and free
from encumbrances such as other equipment. The minimum space
requirement needed for user safety and proper maintenance is
three feet wide by six feet deep (one meter wide by two meters
deep), directly behind the running belt.