Furuno 525TID-TMD - Manual

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Page 2 – Type of Boat; Installation; Assembling the Transducer & Bracket; upper; Compensating for Transom Angle; No shim is needed for; Hole Drilling
Page 3 – Mounting & Adjusting the Bracket; CAUTION; Testing on the Water; To improve performance; Stabilizing the Bracket
Page 4 – When reattaching the; Cable Routing; or; Checking for Leaks; that do not interlock must; Cleaning; AIRMAR; TECHNOLOGY CORPORATION

Loading the manual

-29

9-0

2 r

ev.

Transom Mount, 1kW, Depth Transducer

with Release Bracket

Models: TM258, TM260, TM270W

Applications

• Recommended for outboard and inboard / outboard sport fishing

powerboats, 8 m (25') and up

• Not recommended for inboard powerboats
• Not recommended for stepped hulls
• Adjusts to transom angles from 3

– 21

• Bracket protects the transducer from frontal impact

only

Tools & Materials

Safety goggles
Dust mask
Angle finder
Masking tape (some installations)
Pencil
Electric drill
Drill bits:

Bracket holes

5 mm, #4,

7/32"

Transom hole (optional)

18 mm, 11/16",

3/4"

21 mm

13/16" (

Furuno, Raymarine only)

Cable clamp holes

3 mm

1/8"

Marine sealant (suitable for below waterline)
Socket wrench
Straight edge
Small screwdriver
Grommets (some installations)
Cable ties
Water-based anti-fouling paint (

mandatory in salt water

)

Mounting Location

General Guidelines

CAUTION

: Do not mount the transducer in an area of turbulence

or bubbles: near water intake or discharge openings; behind
strakes, struts, fittings, or hull irregularities.

CAUTION

: Avoid mounting the transducer where the boat may be

supported during trailering, launching, hauling, or storage.

• For best performance, the transducer must be in contact with aera-

tion-free and turbulence-free water. To identify an area of smooth
water, observe the flow off the transom while the boat is underway.

• Allow headroom space above the bracket for it to release and

rotate the transducer upward.

• Mounting on the side of the transom where the propeller blades

are moving downward is preferred (see Figure 1).

• Mount the transducer as close to the centerline (keel) of the

boat as possible to ensure the transducer’s face remains in the
water when the boat is turning. However, keep in mind that it
should be a minimum of 15 cm (6") beyond the swing radius of
the propeller, so the water passing over the transducer does not
cause a flow disturbance to the propeller.

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

Part No.________________ Date___________ Frequency________ kHz

INSTALLATION INSTRUCTIONS

OWNER’S GUIDE &

WARNING

: Always wear safety goggles and a dust

mask when installing to avoid personal injury.

CAUTION

: Never pull, carry, or hold the transducer by

the cable as this may sever internal connections.

CAUTION

: Do not strike the transducer to release it.

When mounted on the bracket, remove the transducer

by removing the locking pin and hinge pin.

CAUTION

: Never use solvents. Cleaners, fuel,

sealants, paint, and other products may contain strong

solvents, such as acetone, which attack many

plastics, greatly reducing their strength.

IMPORTANT

Please read the instructions completely

before proceeding with the installation. These

instructions supersede any other instructions in your

instrument manual if they differ.

TM260
with shims
in operational position

Figure 1. Mounting location on single drive boat

15 cm (6")
minimum beyond
swing radius

NOTE

: Starboard

side of hull where

propeller blades are

moving downward

is prefered.

hull projection
0 – 3 mm (0 – 1/8")

parallel to
waterline

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Summary

Page 2 - Type of Boat; Installation; Assembling the Transducer & Bracket; upper; Compensating for Transom Angle; No shim is needed for; Hole Drilling

Figure 2. Headroom required on stepped transom TM258: 244 mm (9-3/4") headroom Type of Boat • Single drive —Mount a minimum of 15 cm (6") beyond the swing radius of the propeller (see Figure 1). • Twin drive —Mount between the drives a minimum of 15 cm (6") beyond the swing radius of the...

Page 3 - Mounting & Adjusting the Bracket; CAUTION; Testing on the Water; To improve performance; Stabilizing the Bracket

Mounting & Adjusting the Bracket CAUTION: Do not position the transducer deeper in the water than necessary to avoid increasing drag, spray, and water noise and reducing boat speed. CAUTION : The stainless steel bracket must be isolated from a metal hull to prevent electrolytic corrosion. If no ...

Page 4 - When reattaching the; Cable Routing; or; Checking for Leaks; that do not interlock must; Cleaning; AIRMAR; TECHNOLOGY CORPORATION

4 Copyright © 2009 Airmar Technology Corp. All rights reserved. 2. Apply sealant to the threads of the remaining screw to prevent water seeping into the transom. 3. Fasten the stabilizing screw into place with a socket wrench. For clear access to the screw, remove the transducer assembly from the br...