16
TRANSOM TRANSDUCER MOUNTING
Before you begin the process of installing the transducer, check your hull to
find a spot where you’ll get smooth water flow along the bottom of the boat.
You want to avoid ribs, rivets, and gouges or scratches in the hull. To get a true
vertical depth reading, the transducer should be mounted parallel to the water
line. However, a 10° tilt to either side is acceptable. If the hull is reasonably flat
with a dead rise of 10° or less, mount the transducer along the hull bottom. If
dead rise is greater than 10°, mount the transducer with level alignment.
To Install the High-Speed Transducer
1. Assemble the stainless steel brackets to the transducer using the hardware
furnished. Do not tighten until final adjustments are made.
2. Place assembly on transom at selected location with the front of the
transducer extending 1/2" to 5/8" below the bottom of the boat and with
the front part against the transom. The least amount that the transducer
extends below the bottom is desired. If too low, spray and turbulence will
occur resulting in lost bottom readings.
3. With transducer in place, mark the four slot locations of the mounting
brackets. Drill in center of slot outline using a 9/64" (3.5 mm) drill.
4. Fasten the transducer to the transom using the #10 x 3⁄4" screws, nuts and
washer plates.
5. Before final tightening of the four screws holding the brackets to the
transducer, tip the rear edge down approximately 1/8" as shown.
6. Tighten all screws.
CAUTION
: Do not use any thread locking compound on the
screws. Most products such as Loctite
®
contain chemicals that
attack and weaken plastics.
IMPORTANT
: There should be no gap between the brackets
and the transducer. A wide space between these parts will
cause stress on the transducer mounting ears and result in
breakage with time.
When running the cable to the
sounder, avoid other wiring on
the boat, particularly ignition and
alternator cables. They can be a
source of noise on the sounder
display.
< 10°
> 10°
More than 10°
Less than 10°
Dead Rise
Angles
1/4" to 5/8"
Tip Down
1/8"
DOWN
Summary of Contents for FL-18
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