Manual

Bottom Lock ( FL-18 & FL-22HD Only )

Bottom Lock (BL) works the same as Auto Zoom, except the asher continuously updates

the position of the bottom in the magniﬁed view. This can be helpful in a boat that is

moving over varying depths or is riding in heavy waves.

Bottom Lock will keep the bottom reading lined up correctly with the zero mark on the

Zoom scale. This allows you to see objects which are very close to the bottom, even

though the depth may be changing rapidly. The range control must be set to a position

where the bottom is displayed in order for Bottom Lock to function.

FL-18 Bottom Lock (BL)

Activate Bottom Lock by switching the

Mode control to the BL selection on the

right or the left. The right selection operates

Bottom Lock at the normal power level. The

left selection operates Bottom Lock in Low

Power Mode.

FL-22HD Bottom Lock (BL)

Activate Bottom Lock by switching the

Mode control to the right BL 6’ selection.

This selection operates the 6-foot zoom

Bottom Lock at the normal power level.

Use Bottom Lock in your boat only.

FL-20 & FL-22HD

Low Battery Indicator

When battery power runs low, the red “Low Battery”

indicator light will turn on. You can continue to use the

asher, but be aware your time is rapidly decreasing.

When the indicator light begins to ash, failure due to

low voltage is imminent.

IMPORTANT - Bottom Lock works best for boats in motion. When still ﬁshing, such as

vertical jigging or ice ﬁshing, the Bottom Lock feature can incorrectly identify a large

object slowly moving into your view as a shallower depth change. The result is that the

asher adjusts to the new level and the object is displayed as the bottom.

Bottom Lock is not available on the FL-20