Honda H3011H Owner's Manual page 43

Mowing on unsquare areas
If your mowing area is not square or four-sided, divide the area into
several blocks so you can mow in a neat mowing pattern.
Overlapping in straight-a-ways
Be sure that each mowing lane overlaps sufficiently. The recommended
overlap width is between 102- 152 mm (4-6 in), or approximately the
width of one of the mower's front tires.
1st
102-152 mm (4-6 in)
Overlapping in curves and turns
When cutting in curves and turns, shift to a slower speed and be sure to
overlap the previous cut by 50%, or approximately half the width of the
mower.
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