Raise the blades on your push mower so that it leaves your grass 2 1/2 to 3 1/2 inches tall. Leave the length of your Bermuda grass a little long for prominent stripes. Push in the tabs located at each wheel on your lawn mower to raise the height of the mower, which will raise the blades. Push the tab all the way in for a longer cut.
Make your first pass in the direction that you want your stripes. Move slowly to ensure straight rows.
Turn your mower at the end of the first row and position the wheels to overlap 3 to 4 inches on the previous pass. Cut your grass while moving in the opposite direction of the first row.
Continue overlapping rows and mowing in opposite direction on each row until the whole lawn has been mowed.
Mow your grass in the same direction the next time you mow. Each time you mow your Bermuda grass the stripes will become more prominent.