Garmin Fishfinder 140 User manual

Owner’s Manual
full feature sonar
Fishfinder 90/140
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current updates and supplemental information concerning the use and operation of this and other Garmin products.
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express permission of Garmin.
© 2008 Garmin Ltd. or its subsidiaries
Garmin International, Inc.
1200 East 151st Street,
Olathe, Kansas 66062, USA
Tel. [phone] or [phone]
Fax [phone]
Garmin (Europe) Ltd.
Liberty House
Hounsdown Business Park,
Southampton, Hampshire, SO40 9RB UK
Tel. [phone] (outside the UK)
0808 2380000 (within the UK)
Fax [phone]
Garmin Corporation
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Tel. [phone]
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December 2008 Part Number 190-00582-10 Rev. A Printed in Taiwan
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Fishnder 90/140 Owner’s Manual iii
Introduction
Introduction
This manual covers the features and operation of the
Fishnder 90/140.
About This Manual
To get the most out of your Fishnder 90/140, take time to
read this manual and learn the operating procedures for your
unit in detail. This manual is organized into the following
sections.
The Introduction sections contains the Table of Contents,
Product Registration, and Product Support Information.
The Getting Started sections contain information about
sonar and the Fishnder.
The Installing Your Fishnder section provides instruction
on installing the Fishnder and the Transducer. If you
experience difculty installing the Fishnder, contact
Garmin Product Support or an installation professional in
your area.
The Operating Your Fishnder section describes the
features and operation of the Fishnder 90/140.
The Appendix contains unit specications ,optional
accessories, and care information. You can also nd
warranty information, the Software License Agreement and
European Licensing Requirements in the Appendix.
An Index is provided at the end of the manual for reference.
Manual Conventions
This manual uses the term Warning to indicate a potentially
hazardous situation, which, if not avoided, could result in
death or serious injury.
This manual uses the term Caution to indicate a potentially
hazardous situation, which, if not avoided, may result
in minor injury or property damage. It may also be used
without the symbol to alert you to avoid unsafe practices.
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iv Fishnder 90/140 Owner’s Manual
Introduction
Table of Contents
Introduction ............................................................. iii
About This Manual ...........................................................iii
Manual Conventions ........................................................iii
Product Registration ........................................................ v
Contact Garmin ................................................................ v
Warning ........................................................................... vi
Getting Started ......................................................... 1
Understanding the Fishnder ........................................... 1
Using Simulator Mode ......................................................4
Installing Your Fishnder ....................................... 5
Installing the Transducer ..................................................6
Installing the Fishnder Unit ...........................................10
Installing the Wiring Harness ......................................... 12
Testing the Transom Mount Installation ......................... 13
Operating Your Fishnder .................................... 14
Understanding Basic Functions ..................................... 14
Using the Main Menu .....................................................15
Using the Setup Menu ...................................................16
Appendix ................................................................ 19
Specications ................................................................. 19
Optional Accessories .....................................................19
Caring for the Fishnder ................................................19
Software License Agreement ......................................... 21
Limited Warranty ............................................................ 21
Declaration of Conformity (DoC) .................................... 23
Index ....................................................................... 24
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Fishnder 90/140 Owner’s Manual v
Introduction
Product Registration
Help us better support you by completing our online
registration today. Go to http://my.garmin.com. Keep the
original sales receipt, or a photocopy, in a safe place.
Contact Garmin
Contact Garmin Product Support if you have any questions
while using your Fishnder 90/140. In the USA, go to
www.garmin.com/support, or contact Garmin USA by
phone at [phone] or [phone].
In the UK, contact Garmin (Europe) Ltd. by phone at 0808
2380000.
In Europe, go to www.garmin.com/support and click
Contact Support for in-country support information,
or contact Garmin (Europe) Ltd. by phone at +44 (0)
870.8501241.
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vi Fishnder 90/140 Owner’s Manual
Introduction
Warning
Failure to avoid the following potentially hazardous situations could result in an accident or collision resulting in death or serious
injury.
When navigating, carefully compare information displayed on the Fishnder 90/140 to all available navigation sources, including information
from visual sightings, and maps. For safety, always resolve any discrepancies or questions before continuing navigation.
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Fishnder 90/140 Owner’s Manual 1
Getting Started
Getting Started
To get the most out of your new Fishnder:
• Before you install and use your Fishnder, read the
information in this manual.
• Assemble and install the hardware (page 5).
• Practice using your Fishnder in Simulator Mode
(page 4).
• Use the Fishnder (page 14).
Understanding the Fishnder
The Fishnder 90 or 140 is a fully automatic sonar unit
that allows you to go out on the water and nd sh without
having to congure a lot of settings; or, if from experience
you know exactly how you want your Fishnder screen to
look and function, you can customize each setting to your
specic needs.
If you have used a Fishnder before, and you know how
to interpret the sonar information on the screen, you can
skip this section. If you have not used a Fishnder before,
you might want to learn a bit about sonar: what it is, how it
works, and what you might see on the Fishnder 90 or 140
screen. This manual does not go into technical detail about
sonar, but it can give you a general understanding of those
things that you need to know about sonar that can help you
interpret the screen and nd the sh.
Understanding Sonar
During installation, you connect your Fishnder 90 or 140
to a transducer. The transducer uses sound to determine
information about what is in the water beneath your boat.
Then the transducer sends the information to your Fishnder
to be displayed on the screen for you to view and interpret.
The transducer sends sound waves down into the water
in a cone shape, similar to a ashlight beam (covering a
smaller circular area at the top and angling out to a larger
circular area at the bottom). These sound waves reect off
of any object that they hit, and then the waves travel back
up to the transducer. These objects could be sh, branches,
the bottom, or any other object that has density that is
different from the water. The transducer receives the sound
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2 Fishnder 90/140 Owner’s Manual
Getting Started
wave information, and then sends the information to the
Fishnder. The Fishnder displays the information on the
screen for you to see and interpret. The type of transducer
and settings you choose determine how the information is
shown on the screen.
Understanding Dual Beam Transducer
Coverage
A dual beam transducer can transmit a narrow or a wide
beam. The water area covered by the transmitted sound
waves is determined by the beam width of the transducer
and the water depth. The narrow beam provides crisp detail
of what is under your boat, and is helpful if you are shing
in deeper water where the beam covers more area (for
example, at a 30-foot depth, the narrow beam covers the
area of about a 7-foot circle).
Wide
Beam
Narrow
Beam
The wide beam is more helpful in shallow water, because
it gives you a much wider view of objects in the water,
including areas beyond the sides of your boat. At a 30-foot
depth, the wide beam covers the area of approximately a
20-foot circle.
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Fishnder 90/140 Owner’s Manual 3
Getting Started
Understanding the Fishnder Screen
Experimentation and experience are the keys to successfully
interpreting your Fishnder screen. We recommend that you
take your Fishnder out on familiar water, and spend time
learning to interpret what you see on the Fishnder 90 or
140 screen.
Think of the Fishnder screen as if you took a picture
from the side of an aquarium in your home. You can see
how deep a sh is in the water (how close it is to the top
or bottom), but you cannot tell where the sh is located
horizontally in the water (whether it is near the front or the
back of the aquarium). Remember this when you are trying
to locate exactly where something is in the water.
Water depth Depth range
Water
temperature at
the transducer
You see
suspended targets
as arches or sh
symbols.
Structure
Bottom shape and type
Simulator
mode
indicator
The strongest sonar returns appear on your screen as solid,
dark areas. The weakest returns appear less intense, less
solid. The bottom of the water body returns the strongest
signal, so you can identify the bottom as the continuous,
solid line running across the bottom of the screen. The
strength of the sonar return can also help you interpret the
hardness of the bottom. The thicker the bottom line, the
harder the bottom.
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4 Fishnder 90/140 Owner’s Manual
Getting Started
The Fishnder 90 and 140 include the latest technology
in interpreting bottom signals; they can see through sh,
structures, and thermoclines (shown in the weakest hues).
Even so, large schools of sh or dense structures close to
the bottom can affect water depth return readings.
NOTE: If the Fishnder is unable to track the bottom for
any reason, the digits which indicate depth ash on and off
to alert you that the Fishnder is not tracking the bottom.
Along the top of the screen, you might see a grouping of
intense hues. This area is surface clutter, which can be
caused by waves or any other sonar interference at the
surface of the water. Too much surface clutter can obscure
your view of sh. You can turn down the Gain setting to
reduce this surface clutter (page 15).
You can see in the previous illustration how the sh are
indicated in a few different ways. By default, sh appear
as arches. Actual sh returns might not always appear as
perfect arches, due to the speed, sh orientation, or other
conditions. You can also turn on the Fish Symbols setting if
you want to see suspended targets indicated by a sh shape
instead of arches (page 17).
Using Simulator Mode
Use Simulator Mode to practice and learn the operation of
the Fishnder. If the Fishnder does not detect a transducer
at startup, it automatically starts in Simulator Mode.
While in Simulator Mode, the Fishnder displays a bottom
scene, and you can control the Fishnder (except the Gain
and Auto Gain options) just as if it were on the water.
If no keys are pressed for two minutes, the Fishnder
automatically resets to default settings while in Simulator
Mode.
To exit Simulator Mode, turn off the Fishnder.
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Fishnder 90/140 Owner’s Manual 5
Installing Your Fishnder
Installing Your Fishnder
Make sure you completely read and understand all
instructions before you install and use your Fishnder. If
you have problems, contact Garmin Product Support, or
seek other professional assistance.
You can install the Fishnder hardware on a transom or on
a trolling motor. Before installation, make sure the wiring
harness can reach the Fishnder and transducer locations.
Check the packing list below. If you are missing any items,
contact your Garmin dealer.
Packing List (one of each, unless otherwise noted):
A—Fishnder sonar unit
B1—Swivel mount bracket (Fishnder
140; optional for Fishnder 90); or
B2—Tilt mount bracket (Fishnder 90)
C—Swivel base (Fishnder 140)
D—Mounting knobs
E—Mounting knob spacer
F—Snap ring
G—Transducer with power cable
H—Transducer mount
I—Trolling motor mount gasket
J—5 mm Flat washers (2)
K—5 x 30 mm Screws (2)
L—10-32 Lock nut
M—4 x 12 mm Screws (4)
N—10-32 x 1.75 Screw
O—1/4" Cable clamps (2)
P—Plastic spacer
Q—1/4" Rubber washer
R—Cable tie, 5.6" (4)
S—Cable tie, 20”
J
K
L
M
N
O
P
Q
R
I
S
G
(Cable not shown)
C
D
E
B1
F
(Fishnder 90)
B2
(Fishnder 90)
(Fishnder 140)
A
H
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6 Fishnder 90/140 Owner’s Manual
Installing Your Fishnder
Installing the Transducer
Assembling the Transducer
1. Insert the rubber washer (Q) and plastic spacer (P) into
the transducer (G) at the same time. DO NOT lubricate
the rubber washer.
2. Route the cable toward the back of the transducer. Slide
the transducer into the transducer mount (H).
3. Place a 5 mm at washer (J) on the 10-32 x 1.75" screw
(N), and insert the screw through the transducer mount,
spacer, and rubber washer.
4. Place the remaining 5 mm at washer on the exposed
end. Install the 10-32 lock nut (L) nger tight. You can
tighten the transducer further after installation on the
boat.
Mounting the Transducer on a
Trolling Motor
1. Slide the large cable tie (S) through the slot on the
transducer mount (H) with the ridges of the band facing
up until equal lengths extend on both sides of the mount.
(NOTE: For cold water, or heavy timber or debris areas,
a metal 4-5" worm gear clamp is recommended.)
2. Position the mount gasket (I) on the curved top of the
transducer mount.
3. Place the transducer assembly against the motor body of
the trolling motor, with the front of the
transducer pointed away from the
trolling motor propeller.
Back of the transducer Cable tie
slot
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Fishnder 90/140 Owner’s Manual 7
Installing Your Fishnder
4. Wrap the two ends of the cable tie around the motor
body. Place the pointed end of the cable tie through the
fastener hole on the opposite end and pull it through until
it is snug but not tight. (The cable tie clicks when you pull
it.)
5. Position the transducer so that it is parallel with the
bottom when in use, and make sure the gasket is aligned
properly. Pull the cable tie end until tight. Trim off the
excess, if necessary. Tighten the 10-32 locking nut until
it touches the mounting bracket and then tighten 1/4 turn
more. (Do not overtighten.)
6. Route the 20’ (6 m) transducer cable using the supplied
cable ties to secure the cable to the motor shaft. You
can ll the forward-facing portion (except the cable tie
pocket) of the transducer mount with sealant to avoid
accumulating debris.
Mounting the Transducer on a Transom
Tool List (not included)—drill, 3/8" wrench or socket,
5/32" and 1/8" drill bits, masking tape, #2 Phillips
screwdriver, and marine sealant.
When selecting a transom mount location, consider the
following for optimal performance:
• For your sonar to operate properly, the transducer must
be located in calm water. DO NOT mount the transducer
behind strakes, rivet lines, struts, ttings, water intake,
discharge ports, eroding paint, or anything that creates
turbulence.
• Mount the transducer as close to the center of the boat as
possible.
• DO NOT cut the transducer lead. (This voids your
warranty.)
• DO NOT mount the transducer in locations where it
might be jarred when launching, hauling, trailering, or
storage.
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8 Fishnder 90/140 Owner’s Manual
Installing Your Fishnder
• DO NOT mount the transducer in the path of the prop on
single-drive boats. The transducer can cause cavitation
that can degrade the boat’s performance and damage the
prop. On twin-drive boats, mount the transducer between
the drives, if possible.
Do not mount the transducer behind
strakes, rivet lines, struts, ttings, water
intakes or discharge ports.
Mount the transducer
parallel with the water line.
Make sure 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.
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Fishnder 90/140 Owner’s Manual 9
Installing Your Fishnder
To mount the transducer on a transom:
1. Position the transducer mount at the selected transom
location. Make sure the transducer is parallel with the
water line. Mark the center locations of each hole on the
transducer mount. (See the gures on the next page.)
2. Using a 5/32" bit, drill the pilot holes approximately 1"
(25 mm) deep at the marked locations. To avoid drilling
the holes too deep, wrap a piece of tape around the bit
at 1" from the point of the bit.
3. Apply marine sealant to the 5 x 30 mm screws. Attach
the transducer assembly to the transom using the 5 x 30
mm screws. Adjust the transducer assembly to extend
beyond the bottom of the transom approximately 1/8"
(3 mm) on berglass hulls or 3/8" (10 mm) on aluminum
hulls. Adjust the transducer assembly to be aligned
parallel with the water.
4. Tighten the 10-32 locking nut until it touches the
mounting bracket, and then tighten 1/4 turn more. (Do
not overtighten.)
5. Place the rst cable clamp on the transducer cable
approximately one third of the distance between the
transducer and the top of the transom. Mark the location.
Using a 1/8" bit, drill a pilot hole approximately 3/8" (10
mm) deep.
6. Attach the cable clamp using a 4 x 12 mm screw. Coat
the screw with marine sealant before installation. Repeat
steps 5 and 6 using the other cable clamp.
7. Route the transducer cable, as needed, to the Fishnder.
DO NOT CUT THE CABLE. Avoid routing the cable with
electrical wires or other sources of electrical interference.
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10 Fishnder 90/140 Owner’s Manual
Installing Your Fishnder
OK
Level
Drill pilot holes here.
Vertical
Bottom of the transom
Align with the
transom bottom. The
transducer should
extend 1/8" below
berglass hulls or
3/8" below aluminum
hulls.
Keep it parallel with the water line.
Installing the Fishnder Unit
Selecting a Fishnder installation Location
Select a Fishnder installation location that allows you to
view and operate it easily while operating the vessel. Select
a mounting surface strong enough to support the weight
of the Fishnder and protect it from excessive vibration or
shock. DO NOT mount the bracket in a location where the
Fishnder is exposed to extreme temperature conditions.
When installing the mounting bracket, be sure to allow
room to connect and rout the power cable.
Mounting the Bracket Assembly
Tool List (not included)—drill, screwdriver (Phillips or
standard), three #8 pan-head machine bolts with matching
nuts and washers, and a 5/32" drill bit; or three #8 pan-head,
self-tapping screws and a 1/16" drill bit.
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Fishnder 90/140 Owner’s Manual 11
Installing Your Fishnder
To mount the bracket assembly:
1. Using the tilt mount bracket (Fishnder 90) or the
swivel base (Fishnder 140; Fishnder 90 option) as a
template, mark the location of the three holes that you
use to secure the bracket to the mounting surface.
2. If securing the base with machine bolts, drill three 5/32"
holes at the locations you marked; or, if securing the
base using self-tapping screws, drill 1/16" starter holes
at the locations you marked. Drill starter holes no deeper
than half the screw length.
3. Secure the tilt mount bracket or swivel base with three
bolts or screws. DO NOT OVERTIGHTEN.
4. If you are using the swivel mount, place the swivel mount
bracket over the swivel base and secure it with the short
knob.
To install the Fishnder on the mount bracket:
1. Align the slot on the back of the Fishnder with the long
mounting knob, and slide the Fishnder into place. If
necessary, adjust the long knob to spread the bracket
arms apart. (Turn counter-clockwise to widen the bracket
arms and clockwise to tighten.)
2. Adjust the Fishnder angle, and tighten the long
mounting knob until snug.
3. For the Fishnder 140 (Fishnder 90 option), rotate
the swivel mount bracket by twisting it left or right. The
bracket clicks as you turn it. Select a good viewing
angle, and then tighten all knobs.
(Fishnder 90)
Tilt mount bracket
Swivel mount bracket
(Fishnder 140;
Fishnder 90 option)
Swivel base
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12 Fishnder 90/140 Owner’s Manual
Installing Your Fishnder
Installing the Wiring Harness
The Fishnder comes with a wiring harness that connects
the Fishnder to power and the transducer with one
easy-to-remove connection. If it is necessary to extend the
power wires, use 22 AWG wire. DO NOT cut the transducer
cable, because this voids your warranty. If your boat has an
electrical system, you might be able to wire the Fishnder
directly to an unused holder on your current fuse block. If
you are using the boat’s fuse block, remove the in-line fuse
holder supplied with the Fishnder. You can also wire the
Fishnder directly to the battery.
CAUTION: The Fishnder input voltage is 10–18 volts
DC. Do not exceed this voltage, because this can damage
the Fishnder and void the warranty.
To install the wiring harness:
1. Determine the polarity of the power source using a test
light or volt meter.
2. Install the red (+) wire on the positive fuse holder or
battery terminal.
3. Install the black (-) wire on the negative fuse holder or
battery terminal.
4. Install a 2 Amp fuse in the fuse holder (fuse block only).
5. Align the notches on the cable plug and on the back of
the Fishnder. Insert the cable into the connector and
turn the lock ring counter-clockwise until it stops.
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Fishnder 90/140 Owner’s Manual 13
Installing Your Fishnder
Testing the Transom Mount
Installation
Perform this test after you install the Fishnder. Because
you need water to carry the sonar signal, the Fishnder
does not function properly with the transducer out of the
water. When you place your boat in the water, CHECK FOR
LEAKS around the screw holes that are below the water
line. DO NOT leave your boat in the water for an extended
period of time without checking for leaks.
To test the transom mount installation:
1. Begin testing the installation at a slow speed. If the
sonar appears to be working properly gradually increase
the boat’s speed observing the sonar’s operation. If
the sonar signal suddenly is lost or the bottom return is
severely degraded, note the speed at which this occurs.
2. Return the boat to the speed at which the signal was
lost. Make moderate turns in both directions, and see if
the signal improves.
3. If the signal strength improves while turning, adjust the
transducer so that it extends another 1/8" below the
transom of the boat. It might take several adjustments to
eliminate the degradation.
4. If the signal does not improve, it might be necessary to
move the transducer to a different location.
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14 Fishnder 90/140 Owner’s Manual
Operating Your Fishnder
Operating Your Fishnder
ENTER
MENU
Power key—turns the Fishnder on or
off and controls the screen backlight.
(Fishnder 140 is shown.)
ENTER key—conrms a selection.
MENU key—shows or exits a menu.
Arrow keys—the up and down Arrow
keys select an item on a menu. Only
the Fishnder 140 has the right and left
Arrow key that cycles through the Main
menu options.
Understanding Basic Functions
To turn on the Fishnder:
Press and release the Power key.
To turn off the Fishnder:
Press and hold the Power key.
To change the backlight level:
Press the Power key repeatedly to cycle between off,
low, and high.
To view or change settings for your Fishnder, use the Main
menu and the Setup menu.
To change a setting:
1. Press MENU. The Main menu appears.
2. Use the Arrow keys to move the selection arrow to an
option, and press ENTER. The settings appear.
If you select Setup, the Setup menu appears. See
“Using the Setup Menu” on page 16.
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