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20 DS400 and DS500 Digital Fishfinders
Checking the Angle and Projection
• Do not position the bow of the transducer lower than the stern
because aeration will occur.
• Do not position the transducer farther into the water than necessary
to avoid increasing drag, spray, and water noise and reducing boat
speed.
1. Using a straight edge, sight the underside of the transducer relative to the
underside of the hull (see Figure 2-9 ). The stern of the transducer should
be 1–3mm (1/16–1/8") below the bow of the transducer or parallel to the
bottom of the hull.
Figure 2-9: Transducer Angle Adjustment
2. Using the vertical adjustment space in the bracket slots, slide the trans-
ducer up or down (see Figure 2-10 ). Be sure the bottom left corner of the
transducer projections 3mm (1/8") below the bottom of the hull.
13˚ transom angle
14 –17 angle
20° transom angle3˚ transom angle
parallel
slight angle
angle
reversed
angle
too steep
shim with shim with
taper down taper up
slight angle
slight angle
D6767-1