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echo Installation Instructions

Installing the transom-Mount Hardware

Notice

Do not cut the transducer cable. Cutting the transducer cable will void your 

warranty.
1.   Position the transducer mount 

 at the selected mounting location on the 

transom (

page 1

).

2.  Align the transducer parallel with the water line 

, and mark the center 

location of each hole on the transducer mount.

3.   Using a 

5

/

32

 in. (4 mm) bit, drill the pilot holes approximately 1 in. 

(25 mm) deep at the marked locations, while taking the following 

precautions.
•  To avoid drilling the holes too deep, wrap a piece of tape around the 

bit at 1 in. (25 mm) from the point of the bit to act as a guide.

•  If you are installing the bracket on fiberglass, place a piece of tape 

over the pilot-hole location to reduce cracking of the gel-coat.

4.   Apply marine sealant to the included 30 mm M5 screws, and loosely 

attach the transducer assembly to the transom. 

5.  Adjust the transducer assembly so that it extends beyond the bottom of 

the transom 

 approximately 

1

/

8

 in. (3 mm) on fiberglass hulls or 

3

/

8

 in. 

(10 mm) on aluminum hulls

6.  Make sure that the transducer is aligned parallel with the water line.
7.   Tighten the 10-32 locking nut until it touches the mounting bracket and 

then tighten 

1

/

4

 turn more (do not overtighten).

8.  If you would like to route the cable through the transom, choose a pass-

through location well above the waterline 

 and mark it.

9.  Use a 

5

/

8

 in. (16 mm) drill bit to drill a pass-through hole completely 

through the transom.

10. Place a cable clamp on the transducer cable 

, approximately one third 

of the distance between the transducer and the top of the transom or the 

pass-through hole.

11. Mark the pilot-hole location for the cable clamp, and, using a 

1

/

8

 in. (3.2 

mm) bit, drill a pilot hole approximately 

3

/

8

 in. (10 mm) deep.

12. Apply marine sealant to the included 12 mm M4 screw, and attach the 

cable clamp to the transom.

13. Repeat steps 10–12 using the other cable clamp.
14. Route the transducer cable to the echo device.

•  If you are routing the cable using a pass-through hole, feed it through 

the hole you drilled in step 8, and install the cable-entry cover 

 

(

page 2

).

•  If you are not routing the cable using a pass-through hole, route the 

cable up and over the top of the transom 

.

  Avoid routing the cable close to electrical wires or other sources of 

electrical interference.

Installing the cable-Entry cover

If you routed the cable through the transom after you installed the transducer, 

install the cable entry cover to keep water from entering your boat. 
1.  Place the cable-entry cover 

 over the hole and the cable, 

with the opening pointing downward, and mark the location 

of the two pilot holes.

2.  Remove the cable-entry cover, and, using a 

1

/

8

 in. (3.2 mm) 

bit, drill the pilot holes approximately 

3

/

8

 in. (10 mm) deep.

3.  Fill the pass-through hole with marine sealant so that it covers 

the cable completely, and that there is excess sealant around 

the hole and the cable.

4.  Place the cable-entry cover 

 over the hole and the cable, 

with the opening pointing downward.

5.  Apply marine sealant to the included 12 mm M4 screws, and attach the 

cable-entry cover to the transom.

6.  Wipe away any excess marine sealant.

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