Garmin GPSMAP 238 Sounder User Manual download pdf (Page 107)

Appendix A

Mounting the Transducer

Proper transducer installation is key to getting the best performance from your new unit. If the

transducer lead is too short, extension cables are available from your Garmin dealer. DO NOT cut the

transducer lead or any part of the transducer cable, as this will void your warranty. The cable cannot be

spliced and connected to any existing (Garmin or non-Garmin) transducer cables.

Following are some tips and basic installation instructions for some popular transducers. Detailed

installation instructions are provided in the transducer kits. Some transducers may need to be installed

by a professional marine installer.

Transom Mount Installation

Transom Mount Transducer (depth/temp)

Do not mount transducer directly in the

path of the prop. The transducer can cause

cavitation that may degrade the boat's performance

and damage the prop.

Make sure that the transducer is

below water level when the boat

is on plane at high speed

Apply marine sealant to all

screw threads to prevent water

from seeping into the transom.

Mount the transducer cable cover

well above the waterline.

Transducer should extend 1/8" below

fiberglass hull or 3/8" below aluminum hull

Mount the transducer parallel with the bottom.

DO NOT mount the transducer behind strakes, struts,

ﬁ ttings, water intake or discharge ports, or anything that

creates air bubbles or causes the water to become turbulent.

It is important that the transducer be in clean (non-turbu-

lent) water for optimal performance.

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Garmin GPSMAP 238 Sounder User Manual Page 107