Sight and hold this level with a vertical tree...
or a corner of a building...
or a fence post
15°
Section 2 — Safe Operation Practices
Use this page as a guide to determine slopes where you may not operate safely.
WARNING: Do not operate your lawn mower on such slopes. Do not mow on inclines with a slope in excess of 15 degrees (a rise of approximately
Operate RZT zero turn tractors across the face of slopes rather than up and down. Begin with the first pass across the bottom of the slope and turn uphill at the end of each pass whenever possible.