Operator's Manual

1. INSTALLATION

1.3 Transducer

The performance of the fish finder largely depends upon the transducer position. Select a place

least affected by air bubbles since turbulence blocks the sounding path. The face of the transducer

must be facing the sea bottom in normal cruising trim of the boat. Further, select a place least in-

fluenced by engine noise. It is known that air bubbles are fewest at the place where the bow first

falls and the next wave rises, at usual cruising speed.

Do not install the transducer inside the hull. Performance cannot be guaranteed.

1.4 Optional Speed/Temperature Sensors

ST-02MSB, ST-02PSB

1.4.1 Mounting considerations

• Select a mid-boat flat position. The sensor does not have to be installed perfectly perpendicular.

However, the sensor must not be located where it may be damaged in dry-docking operations.

• Select a place apart from equipment generating heat.

• Select a place in the forward direction viewing from the drain hole, to allow for circulation of cool-

ing water.

• Select a place free from vibration.

• Do not install near the transducer of an echo sounder, to prevent interference to the echo

sounder.

1.4.2 Mounting procedure

1. Dry dock the boat.

2. Make a hole of approx. 51 mm in diameter in

the mounting location.

3. Unfasten locknut and remove the sensor

section.

4. Apply high-grade sealant to the flange of the

sensor.

5. Pass the sensor casing through the hole.

6. Face the notch on the sensor toward boat's

bow and tighten the flange.

7. Set the sensor section to the sensor casing

and tighten the locknut.

8. Launch the boat and check for water leakage

around the sensor.

Locknut

123

Face "notch"

toward bow.

Flange nut

Coat with

silicone sealant.

Brim

ø77