Verify correct tire pressure, tire thread condition, and not exceeding slope standards.
Use the slowest speed possible before starting up or down hills.
Avoid stopping or changing speed on hills.
If stopping is fully necessary, pull steering / park brake controls into the neutral position and push outward to engage the park brake.
Pull the steering / park brake controls back to the center of the mower and push forward to regain forward movement.
Make all turns slowly.
WARNING! Do not drive the rider on terrain that slopes more than 10 degrees. Mow slopes up and down, never side to side. Avoid sudden directional changes. Do not drive across slopes.