Thin or no Grayline
Wider Grayline
A small amount of Grayline indicates a soft bottom (left), probably sand or mud. More Grayline indicates a harder, rocky bottom (right).
Press ↑ to increase the level of Grayline or press ↓ to decrease it. Ech- oes scrolling onto the screen will show the effects of the Grayline change. If you reach the maximum or minimum level, a tone sounds alerting you to the limits. Press PWR to clear the menu.
Chart Speed
The rate that echoes scroll across the screen is called the chart scroll speed. The default for this unit is "max" (100 percent); we recommend that you leave the scroll speed set there for virtually all fishing condi- tions.
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