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B175H

130 - 210 kHz

Copyright © 2008 - 2012 Airmar Technology Corp.

Follow the precautions below for optimal 

product performance and to reduce the risk of 

property damage, personal injury, and/or death.

WARNING

: Always install the two set screws with 

marine sealant applied to the threads. This will hold 
the hull nut firmly in place. Failure to do so may allow 
the hull nut to become loose.

WARNING

: Always wear safety goggles and a dust 

mask when installing.

WARNING

: Immediately check for leaks when the 

boat is placed in the water. Do not leave the boat 
unchecked for more than three hours. Even a small 
leak may allow considerable water to accumulate.

WARNING

Stainless steel housing in a metal hull

Be sure the washer contacts the hull. Do not tighten 
the hull nut with the washer against the isolation 
bushing, as the housing will not be firmly installed. If 
necessary, sand the isolation bushing until the washer 
rests against the hull.

CAUTION

CHIRP transducer

—Do not install in the 

engine compartment or other hot place. The 
transducer may fail if it overheats.

CAUTION

CHIRP transducer

—Always operate the 

transducer in water. Operating in air will allow the 
transducer to overheat resulting in failure.

CAUTION

: The arrow on the top of the transducer 

must point toward the keel or centerline of the boat. 
This will align the angle of the element inside the 
transducer with the deadrise angle of your hull.

CAUTION

: Never install a metal transducer on a 

vessel with a positive ground system.

CAUTION

: Never pull, carry, or hold the transducer by 

its cable; this may sever internal connections.

CAUTION

Stainless steel housing in a metal hull

Stainless steel housing must be isolated from a metal 
hull to prevent electrolytic corrosion. Use the isolation 
bushing supplied.

CAUTION

: Never use solvents. Cleaner, fuel, sealant, 

paint, and other products may contain solvents that can 
damage plastic parts, especially the transducer’s face.

IMPORTANT

: For optimal performance, apply marine 

sealant to the entire inside surface of the spacer. This 
will fill the gap between the spacer and the sidewall of 
the transducer preventing vibration.

IMPORTANT

: Read the instructions completely 

before proceeding with the installation. These 
instructions supersede any other instructions in your 
instrument manual if they differ.

17

-4

58

-0

1 re

v

1

0

06

/20

/16

Thru-Hull: 1kW

 with Temperature Sensor

Tilted Element

 Depth Transducer

Tilt Angles: 0

°

, 12

°

, 20

°

Models: 

B164, B175H, B175HW, B175L, B175M,

SS164, SS175H, SS175HW, SS175L, SS175M

Pairs: 

B264N, B264W, SS264N, SS264W

U.S. Patent No. 7,369,45; 8,582,393. UK Patent No. 2 414 077

Applications

Bronze

 housing recommended for fiberglass or wood hulls.

 

Never

 

install a bronze housing in an aluminum hull, because 

electrolytic corrosion will occur

.

Stainless steel

 housing compatible with all hull materials.

Recommended for metal hulls to prevent electrolytic corrosion 

provided the stainless steel housing is isolated from the metal hull.

Match Tilt Angle of Transducer to Deadrise

Be sure your transducer model matches the deadrise angle of 
your hull at the selected mounting location.

 The tilt angle is printed 

on the top of the transducer (see Figure 1). To measure the 
deadrise angle of your hull at the selected mounting location, use 
an angle finder or a digital level (see Figure 2).

0

°

 transducer for deadrise angles from 0

°

 to 7

°

12

°

 transducer for deadrise angles from 8

°

 to 15

°

20

°

 transducer for deadrise angles from 16

°

 to 24

°

Record the information found on the cable tag for future reference.

Part No._________________Date___________Frequency________kHz

Figure 2. Deadrise angle of the hull

transom view

deadrise angle

slope of hull

parallel to waterline

Copyright © 2005 Airmar Technology Corp.

tilt angle

Figure 1. Top of transducer

 (0

°

 model shown)

INSTALLATION INSTRUCTIONS

OWNER’S GUIDE      &

Summary of Contents for Tilted Element B164

Page 1: ...leaner fuel sealant paint and other products may contain solvents that can damage plastic parts especially the transducer s face IMPORTANT For optimal performance apply marine sealant to the entire inside surface of the spacer This will fill the gap between the spacer and the sidewall of the transducer preventing vibration IMPORTANT Read the instructions completely before proceeding with the insta...

Page 2: ...water at high speeds The starboard side of the hull where the propeller blades are moving downward is preferred Outboard and I O Mount just forward of the engine s Inboard Mount well ahead of the propeller s and shaft s Stepped hull Mount just ahead of the first step Boat capable of speeds above 25kn 29MPH Review the installation location and operating results of similar boats before proceeding In...

Page 3: ...o the threads of the set screws Using an Allen wrench tighten each set screw until it makes contact with the housing threads Continue to tighten an additional 1 8 to 1 4 turn This will hold the hull nut firmly in place Failure to do so may allow the hull nut to vibrate loose 5 Remove any excess marine sealant on the outside of the hull to ensure smooth water flow under the transducer Cable Routing...

Page 4: ...le resin and lay it inside the hole to seal and strengthen the core Add layers until the hole is the correct diameter Alternatively a hollow or solid cylinder of the correct diameter can be coated with wax and taped in place Fill the gap between the cylinder and hull with casting epoxy After the epoxy has set remove the cylinder 6 Sand and clean the area around the hole inside and outside to ensur...

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