Thank You!
Thank you for choosing Humminbird®, America's #1 name in fishfinders. Humminbird®
has built its reputation by designing and manufacturing top-quality, thoroughly reliable
marine  equipment.  Your  Humminbird®  is  designed  for  trouble-free  use  in  even  the
harshest marine environment. In the unlikely event that your Humminbird® does require
repairs, we offer an exclusive Service Policy-free of charge during the first year after
purchase, and available at a reasonable rate after the one-year period. For complete
details,  see  the  warranty  section  in  this  manual.    We  encourage  you  to  read  this
operations  manual  carefully  in  order  to  get  full  benefit  from  all  the  features  and
applications of your Humminbird® product.
Contact  our  Customer  Resource  Center  at  1-800-633-1468 or  visit  our  website  at
www.humminbird.com.
The 100 Series™ Fishin’ Buddy® comes in four models:
•110 Fishin’ Buddy® - Downlooking Sonar, 160 V x 128 H Display
• 120 Fishin’ Buddy® - Downlooking and SideFinding™ Sonar, 240 V x 160 H Display
•130 Fishin’ Buddy® - Downlooking and SideFinding™ Sonar, 320 V x 240 H Display
•140c Fishin’ Buddy® - Downlooking and SideFinding™ Sonar, Transflective Color 
320 V x 240 H Display.
WARNING! This device should not be used as a navigational aid to prevent collision, grounding,
boat damage, or personal injury. When the boat is moving, water depth may change too quickly
to allow  time  for  you  to  react.  Always  operate  the  boat  at  very  slow  speeds if  you  suspect
shallow water or submerged objects.
WARNING! Remove the Fishin´ Buddy® from the mounting bracket support arm ring when the
boat is traveling. Use the Fishin´ Buddy® at trolling speed only. Traveling at high speed with the
Fishin´ Buddy® attached can cause damage to this device. 
CAUTION: Do not handle the bottom of the transducer while it is transmitting sonar. Prolonged
contact with the transducer element can cause physical discomfort or minor tissue damage.
CAUTION: Do not over-tighten the C-clamp. Turning the C-clamp knob more than recommended
may cause permanent damage. See the instructions for Attaching the Fishin´ Buddy® Mounting
Bracket to the Boat.
Depth Capability  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240 ft (73 m)
Power Output  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1000 Watts (Peak-To-Peak)
Operating Frequency
110 Fishin’ Buddy®:   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 kHz Downlooking Sonar 
120/130/140c Fishin’ Buddy®:  . . . . 200 kHz / 455 kHz Downlooking and SideFinding™ Sonar 
Area of Coverage: 
Downlooking Beam (All Models)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34° @ -10 dB in 200 kHz
SideFinding™ (120/130/140c Fishin’ Buddy® models only)  . . . . . . . 10° @ -10 dB in 455 kHz
LCD Matrix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .160 V x 128 H (110 Fishin’ Buddy®)
240 V x 160 H (120 Fishin’ Buddy®)
320 V x 240 H (130 Fishin’ Buddy®)
320 V x 240 H Transflective Color (140c Fishin’ Buddy®)
Target Separation   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1/2 Inches (63.5 mm)
110/120/130/140c Fishin' Buddy® Control Head Dimensions:
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.22” Wide x 5.76” High x 2.72” Deep
110/120 Fishin' Buddy® Dimensions::  . . . . . . . . . . . . 4.22” Wide x 33.55” High x 13.75” Deep 
110/120 Fishin’ Buddy® Shaft Length:  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24"
130/140c Fishin’ Buddy® Dimensions, with Shaft Extended:
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.22” Wide x 49.55” High x 13.75” Deep 
130/140c Fishin' Buddy® Shaft Length:  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24” – 40”
Battery Life (Backlight Off):
110/120/130 Fishin’ Buddy®:  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30 hours
140c Fishin’ Buddy®:  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 hours
Power Requirement   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 AA Alkaline Batteries
WARNING! Disassembly  and  repair  of  this  electronic  unit  should  only  be  performed  by
authorized service personnel.  Any modification of the serial number or attempt to repair the
original equipment or accessories by unauthorized individuals will void the warranty.  Handling
and/or opening this unit may result in exposure to lead, in the form of solder.
WARNING! This product contains lead, a chemical known to the state of California to cause
cancer, birth defects and other reproductive harm. 
POLICY  ON  ENVIRONMENTAL  COMPLIANCE: It  is the  intention  of  Humminbird®  to be a
good corporate citizen and comply and meet all known and applicable environmental regulations
in  the  areas  and  countries  where  our  products  are  sold.  We  will  promote  and  implement
environmentally sound processes in support of national and international regulations.
ROHS STATEMENT: Product designed and intended as a fixed installation or part of a system
in  a  vessel  may  be  considered  beyond  the  scope  of  Directive  2002/95/EC  of  the  European
Parliament  and  of  the  Council  of  27  January  2003  on  the  restriction  of  the  use  of  certain
hazardous substances in electrical and electronic equipment.
WEEE STATEMENT: Product designed and intended as a fixed installation or part of a system
in  a  vessel  may  be  considered  beyond  the  scope  of  Directive  2002/96/EC  of  the  European
Parliament and of the Council of 27 January 2003 on waste electrical and electronic equipment
(WEEE).
CALIFORNIA PROPOSITION 65 STATEMENT: Lead in cable jackets and boots is restricted to
300 parts per million or less as determined by ICP-AES test methods.
WARNING! ONLY use 6 "AA" alkaline batteries with the Fishin´ Buddy®.  Do NOT attempt to
power the Fishin´ Buddy® from the boats 12 VDC, 24 VDC or 36 VDC power supply.  This can
result in permanent damage to your Fishin´ Buddy®.  Humminbird® is not responsible for over-
voltage failures.
Fishin’ Buddy® Sonar Technology
The Fishin’ Buddy® is the easiest to use fishfinder ever. For most anglers, all you’ll ever
need to do is power on and fish! The Fishin’ Buddy® automatically determines depth and
makes adjustments to keep the bottom and fish visible on the display.
Your  Fishin’  Buddy®  will  have  Downlooking  Sonar  only,  or  Downlooking  and
SideFinding™ sonar. Find the correct sonar description that applies to your unit. 
Downlooking Sonar
Your  110  Fishin’  Buddy®  uses  a  200  kHz  Downlooking  Sonar  system  with  a 
34° area of coverage. Boat speed, wave action, bottom hardness, water conditions and
transducer installation can all affect depth capability.    
Downlooking and SideFinding™ Sonar
Your  and 120, 130  140c Fishin’ Buddy® models use 200 kHz Downlooking Sonar and
455  kHz SideFinding™ Sonar.  Downlooking and SideFinding™  Sonar is  optimized  to
show the greatest bottom definition using the (34°) 200 kHz beam yet can still indicate
fish found in the SideFinding™ (10°) 455 kHz beam when the SideFinding™ feature is
turned on. Boat speed, wave action, bottom hardness, water conditions and transducer
installation can all affect depth capability.
What You See on the Downlooking Sonar Display
The  Fishin’  Buddy®  displays  underwater  information  in  an  easy-to-understand
format. The top of the display corresponds to the water surface at the transducer,
and  the  bottom  of  the  display  corresponds  to  the  Depth  Range  automatically
selected for the current water depth. The Bottom Contour varies as the depth under
the boat changes. Digital readouts provide precise information for depth, fish and
water temperature. 
As the boat moves, terrain and bottom composition variations are displayed. Fish,
baitfish  and  thermoclines  (underwater  temperature  changes)  are  displayed  when
detected. Underwater conditions vary greatly, so some experience and interpretation
is needed to realize all the benefits of the Fishin’ Buddy® – use the picture as a guide
to the most common conditions and practice using your Fishin’ Buddy® over known
bottom types.
What You See on the SideFinding™ Display
Cone  - The  transducer  cone  graph on  the  screen  represents  the  area in  which  the 
100 Series™ Fishin’ Buddy® is searching for fish.
Fish - The symbols displayed in the graph shows where the Fishin’ Buddy®  has marked
fish. Even though a fish may quickly move out of the transducer beam, all fish symbols
are displayed for at least five seconds. The symbol does not indicate the size of the fish.
1. Water Surface Line
2. Depth - Measured at the Transducer
3. Temperature
4. Upper Range
5. Surface Clutter
6. Structure
7. Bottom Contour
8. Lower Range
9. 200 kHz Shaded Fish Symbol
110/120/130/140c Fishin’ Buddy® Downlooking Display
8
7
9
3
2
14
5
6
Distance to closest Fish - Two sets of numbers are shown in the SideFinder™ view.
The smaller number shown inside the SideFinder™ cone and above  the  closest fish
symbol indicates  the distance to the  closet fish. The larger  numbers at the  top  and
bottom of the view are the range of the SideFinder™ beam.
120/130/140c Fishin’ Buddy® SideFinding™ Display
1
2
3
4
5
1. SideFinder™  Window/Transducer Cone Graph
2. SideFinder™  Range
3. SideFinder™  Beam Fish Symbol
4. Distance to Closest Fish in SideFinder™  Beam
5. SideFinder™  Beam Starting Point at Transducer
Each shoreline has its own unique characteristics. The 100 Series™ Fishin’ Buddy® can
see all the way up to the shore when the drop-off is sharp or if there are ledges. When
the slope of the bottom is gentle, the Fishin’ Buddy® will not see all the way to the
shoreline. The Fishin’ Buddy® can normally detect spawning fish that build beds
near the shoreline. Direct experience with each shoreline will teach you the Fishin’
Buddy's capabilities.
The best way to understand how your Fishin’ Buddy® "sees" is to imagine that the
transducer  is  a  flashlight  and  the  water  is  clear.  If  you  are  trying  to  "see"  into
weeds, the ability of your flashlight beam to penetrate depends on the thickness
of the weeds. If the weeds are thin, your flashlight beam will penetrate further. If
you are trying to see past an underwater rise to view the shoreline, it is a question
of how high the rise is. You can "see" the shore if you can shine your flashlight
beam above the rise and illuminate the shore in the background.
Occasionally, the Fishin’ Buddy® may falsely mark objects other than fish. This can
occur with air bubble streams from nearby boats or air filled swim ladders. This can
also occur when the Fishin’ Buddy®  is aimed at a cement or rock wall due to a
double reflection effect. The 100 Series™ Fishin’ Buddy® is designed to eliminate
false readings, especially with the filter on. Due to the strength of the signal, it is
possible to fool and thus, get an occasional false reading if the unit is working from
a stationary, non-moving boat or a pier. The SideFinding™ filter allows the Fishin’
Buddy® to be much more selective in marking fish. Use the filter around docks and
other structures in the water. The Fishin’ Buddy® will display fewer fish with the
filter on.
Getting Started
The Fishin’ Buddy® is easy to use. The following steps summarize the installation tasks
you will perform in the following sections:
1.  Attaching the Directional Handle 
2.  Installing the Batteries
3.  Attaching the Control Head to the Fishin’ Buddy®
4.  Connecting the Cables to the Control Head
5.  Assembling and Attaching the Fishin’ Buddy® Mounting Bracket to the Boat 
6.  Mounting the Fishin’ Buddy®.
1. Attaching the Directional Handle
Use this procedure to attach the directional handle to the battery well. 
1. Screw  the  directional
handle  into  the  socket  on
the side of the battery well.
Attaching the Directional Handle
Directional 
Handle
2. Installing the Batteries
Use this procedure to install the batteries and attach the battery cap (including gasket).
The Fishin’ Buddy® requires six alkaline "AA" size batteries (not included) for operation.
CAUTION:  Always  remove  discharged  batteries  promptly  and  before  periods  of
storage to prevent potential damage due to battery acid leakage. Failure to do so may
void your warranty.
1.  Remove  the  battery  cap  from  the
battery well if needed.
2.  Place  fresh  batteries  in  the  battery
pack,  using  the  diagram  inside  the
battery pack itself as a guide.
3.  Screw the battery cap onto the battery
well,  making  certain  the  gasket  is
present  and  positioned  correctly.
Hand tighten only!
3. Attaching the Control Head to the Fishin’ Buddy®
Use this procedure to attach the control head to the top of the battery cap (once you
have replaced/installed the batteries).
You will need to assemble the control head mounting bracket as part of this procedure.
Installing the Batteries
Battery 
Cap
Battery
Pack
Gasket
Battery 
Well
1.  Assemble  the  control  head  mounting
bracket  by  placing  the  mounting
bracket on top of the battery cap.
2.  Place  the  retainer  ring  over  the
mounting bracket (see illustration).
3.  Screw  the  three  #6  machine  screws
(included) into the 3 holes on the top of
the battery cap, and tighten them until
the  control  head  mounting  bracket  is
secured. Hand tighten only!
4.  Position the control head on top of the
mounting bracket, positioning it so that
it fits between the mounting arms, and
with  the  display  facing  towards  the
handle (see illustration for guidance).
5.  While  holding  the  control  head  in
place,  slide  the  bolt  provided  through
the  mounting  bracket  assembly,  and
screw  the  mounting  knob  onto  the
other side, in order to hold the control
head in place. Hand tighten only!
6.  You  can  tilt  the  control  head  by
loosening  the  mounting  knob  and
tilting  the  control  head  forward  or
backward to suit your needs.  You can
also  swivel  the  control  head  on  the
mounting  bracket  by  grasping  the
control head and rotating it.
Positioning the Control Head
Control 
Head
Mounting 
Arms
Bolt
Mounting
Bracket
Mounting
Knob
Assembling the Mounting Arms
Retainer Ring
Mounting 
Bracket
4. Connecting the Cables to the Control Head 
Use this procedure to attach the transducer and power cables on the battery well to the
keyed connectors on the back of the control head.
1. Attach  the  transducer  and  power
cables  from  the  battery  well  to  the
control  head,  using  the  keyed
connectors on the back of the control
head (see illustration). 
NOTE: The  transducer  and  power
cables  are  already  permanently
attached to the battery well.
5. Assembling and Attaching the Fishin’ Buddy® Mounting  Bracket
to the Boat
Use this procedure to assemble the Fishin’ Buddy® mounting bracket, then attach it to
the boat in the desired mounting location, either by using the C-clamp on the mounting
bracket as a temporary mount, or by using the permanent mounting slots on the bottom
of the mounting bracket to screw or bolt it to the boat.
NOTE: C-clamp mounting is the most versatile and portable way to mount the Fishin´
Buddy® to your boat.
Connect the Cables to the Control Head
Control 
Head
Power
Transducer
The Fishin’ Buddy® should be mounted where it will be most visible and accessible. Use
the following information when considering a mounting location:
•  The transducer will not work when it is not in the water.
•  Turbulent  water  or  water  filled  with  air  bubbles  can  cause  interference  or
prevent the transducer from operating.
1.  Assemble the mounting bracket as shown below, using either one of the two
ratcheted mounting posts provided (see illustration), and screw on the knob.
Hand tighten only!
Mounting Bracket (Vertical)
Pivot 
adjustment 
knob
Mounting Bracket (Horizontal)
Pivot
adjustment 
knob
Permanent 
mounting slots
C-clamp
Permanent 
mounting slots
C-clamp
6. Mounting the Fishin’ Buddy®
Use this procedure to mount the Fishin’ Buddy®.
NOTE: When mounted, the Fishin´ Buddy® transducer must be positioned so that it
will be submerged when the boat is in the water. 
1.  Slide the Fishin’ Buddy® shaft into the mounting bracket support arm ring.
2.  You  may  need  to  adjust  the
mounting  bracket  support  arm  ring
to keep the transducer on the bottom
of  the  Fishin’  Buddy®  pointing
straight  down.    Loosen  the  pivot
adjustment  knob  and  make  the
necessary adjustments.
3.  If the shaft is too long, or not long enough, adjust the length by removing the
Fishin’  Buddy®  from  the  mounting  bracket,  and  unscrew  the  collar  at  the
bottom of the shaft until it allows the shaft to telescope. Adjust the length of
the shaft as needed, then tighten the screw collar once more. Re-mount the
Fishin’ Buddy® to the mounting bracket. 
NOTE: Only the 130 and 140c Fishin´ Buddy® units have adjustable mounting shafts.
The 110 and 120 Fishin´ Buddy® units have a fixed shaft length.  
Press the power button and start fishing!
The Fishin’ Buddy® is designed to run automatically with just a press of the power button.
To get the most out of your Fishin’ Buddy®, read the next section on functions and features. 
Powering ON and OFF
Press and release the POWER-MENU key to power the Fishin’ Buddy® on. Press and
hold the POWER-MENU key until the unit shuts down to power off. 
When  the  Fishin’  Buddy®  powers  on,  the
Start-Up  menu  temporarily  appears.  From
this menu, select either Start-Up, Simulator,
or SetUp. 
•  Use Start-Up for on the water use.
•  Use Simulator for learning how to use
the system with simulated sonar data;
access Simulator by pressing the Right
Arrow Key once.
•  Use  SetUp  to  display  additional  set-up
menu choices; access SetUp by pressing
the  Right  Arrow  Key twice  (See SetUp
Menu for more information).
The Menu System
A simple menu system allows you to access your Fishin’ Buddy® adjustable settings.
To activate the menu system, press the POWER-MENU key. Press the POWER-MENU
key repeatedly to display the Fishin’ Buddy® menu settings, one at a time. When a
menu  setting  is on the display, use the RIGHT and LEFT Arrow keys to adjust the
menu setting. Menu settings are saved and removed from the screen automatically
after  several  seconds.  In  Normal  operating  mode,  most  menu  settings  saved  to
memory  will  not  return  to  their  default  values  when  the  unit  is  turned  off.  See
individual menu choices for more information.
NOTE: Each time the POWER-MENU key is pressed, the backlight momentarily illuminates
for easy viewing at night. Adjust the LIGHT menu setting to keep the backlight on.
NOTE: If Simulator  Mode is selected from  the  Start-Up  Menu and  a transducer  is
plugged in, some menu setting changes will be saved in memory even after the unit
is  powered  down.  Menu  setting  changes  will  not  be  saved  from  Simulator  mode
when a transducer is not connected. 
NOTE: Turning on the SetUp menu choice from the Main Menu System allows you to
access additional set-up menu choices. See SetUp Menu for more information.
Display
LEFT Arrow Key
POWER/MENU Key
RIGHT Arrow Key
Light
(Setting Not Saved in Memory)
Press the POWER-MENU key until LIGHT appears. Use the backlight for night fishing.
Select either 0 (Off), or 1 through 5 to  activate the backlight at the desired level. 
(0 to 5, Default = 0)
NOTE: Continuous backlight operation will significantly decrease the battery life for
the Fishin´ Buddy®.
Sensitivity
(Setting Saved in Memory)
Press  the  POWER-MENU  key  until  SENSITIVITY appears.  Sensitivity  controls  how  much
detail is shown on the display. Increasing the sensitivity shows more sonar returns from
small baitfish and suspended debris in the water; however, the display may become too
cluttered. When operating in very clear water or greater depths, increased sensitivity shows
weaker returns that may be of interest. Decreasing the sensitivity eliminates the clutter from
the display that is sometimes present in murky or muddy water. If Sensitivity is adjusted too
low, the display may not show many sonar returns that could be fish. (0 – 10, Default = 5)
NOTE: This menu item only affects the Downlooking Sonar Beam.
Depth Range
(Setting Not Saved in Memory)
Press the  POWER-MENU  key  until  DEPTH RANGE appears. Automatic is the  default
setting.  When in automatic, the lower range will be adjusted by the unit to follow the
bottom. (Auto, 15, 30, 60, 120, 240;  Default = Auto)
NOTE: In manual operation, if the depth is greater than the depth range setting, the
bottom will not be visible on the display. Select AUTO to return to automatic operation.
NOTE: This menu item only affects the Downlooking Sonar Beam.
Zoom
(Setting Not Saved in Memory)
Press the POWER-MENU key until ZOOM appears. Select Auto to magnify the area around
the bottom in order to reveal fish and structure close to the bottom that may not be visible
during normal operation. When ZOOM is set to Auto, the upper and lower Depth Ranges
are automatically adjusted to keep the area above and below the bottom on the display.
Select Off to return to normal operation. (Off, Auto, Manual Ranges, Default = Off)
There is also a series of manual ranges which can be selected.   The manual depth
ranges are determined by the present depth conditions, and are displayed in increments
of 7, based on current depth conditions. 
NOTE: This menu item only affects the Downlooking Sonar Beam.
Chart Speed
(Setting Saved in Memory)
Magnified Bottom
with More Detail
Upper 
Zoom Range
Structure
Lower Zoom
Range
Press the POWER-MENU key until CHART SPEED appears. Select a setting from 1-5
to increase or decrease the chart speed, where 1 is the slowest and 5 is the fastest
chart  speed.  Chart  speed  determines  the  speed  at  which  the  sonar  information
moves across the display, and consequently the amount of detail shown. A faster
speed shows more information and is preferred by most anglers; however, the sonar
information moves across the display quickly. A slower speed keeps the information
on the display longer, but the bottom and fish details become compressed and may
be difficult to interpret.  (1 to 5, Default = 5)
NOTE: This menu item only affects the Downlooking Sonar Beam.
Fish Alarm
(Setting Saved in Memory)
Press the POWER-MENU key until FISH ALARM appears. Select Off for no fish alarm, or
one of the following symbols to set the alarm. An alarm will sound when the Fishin’
Buddy® detects fish that correspond to the alarm setting.  Fish Alarm will only sound if
Fish ID+ is also set to On. (Off, Large, Large/Medium, All, Default = Off)
NOTE: This menu item only affects the Downlooking Sonar Beam.
NOTE: The Fish Alarm will only sound for fish detected in the Downlooking Sonar Beam.
Depth Alarm
(Setting Not Saved in Memory)
Large fish only
Large/Medium fish only
All fish
Press the POWER-MENU key until DEPTH ALARM appears. Select OFF for no Depth
Alarm, or select 3 to 99 feet to set the alarm depth. An audible alarm sounds when the
depth is equal to or less than the setting. (Off, 3 to 99 feet, Default = Off)
NOTE: This menu item only affects the Downlooking Sonar Beam.
Filter                                           
(Setting Saved in Memory)
Press the POWER-MENU key until FILTER appears. Select either Off or On. Filter adjusts
the  sonar  filter  to  limit  interference  on  the  display  from  sources  such  as  your  boat
engine, turbulence, or other sonar devices. (On, Off, Default = Off)
NOTE: This menu choice only affects the Downlooking Sonar Beam.
SetUp Menu
(Setting Not Saved in Memory)
Press the  POWER-MENU  key  until  SetUp appears. Select either  Off or On.  (Off,  On,
Default = Off)
When you choose SetUp, additional menu choices will become available that are not
a part of the Main Menu system.  After selecting SetUp, press the POWER-MENU
key to display the SetUp menu choices, one at a time. SetUp Menu choices include:
• Contrast •  Battery Alarm
• Fish ID+™ •  Language (International only)
• Bottom View •  Units (International only).
Scroll through all SetUp menu choices to exit the SetUp menu.
Contrast (SetUp Menu)
(Setting Saved in Memory, Menu is only
Available on Monochrome Models)
Make sure that the SetUp menu is selected, then press the POWER-MENU key until
CONTRAST appears. Select a setting from 1 through 5. (1 to 5, Default = 3)
Scroll through all SetUp menu choices to exit the SetUp menu.
NOTE: The Contrast Menu is only available on Monochrome models.
Fish ID+TM (SetUp Menu)
(Setting Saved in Memory)
Make sure that the SetUp menu is selected, then press the POWER-MENU key until FISH
ID+™ appears. Select either Off to view “raw” sonar returns or On to view Fish symbols.
Fish ID+™ uses advanced signal processing to interpret sonar returns, and will display a
Fish Symbol when very selective requirements are met. A select number of possible fish
returns will be displayed with their associated depth. (On, Off, Default = On)
Scroll through all SetUp menu choices to exit the SetUp menu.
NOTE: This menu item only affects the Downlooking Sonar Beam.
Bottom View (SetUp Menu)
(Setting Saved in Memory)
Raw Sonar, 
Fish ID+TM Off
Single Beam
200 kHz 
Fish ID+TM On
Make sure that the SetUp menu is selected, then press the POWER-MENU key until
BOTTOM VIEW appears. Bottom View selects the method used to represent the bottom
and structure on the display. (Monochrome Model Menu Choices: Structure ID, Black,
WhiteLine,  Inverse,  Default  =  Inverse)  (Color  Model  Menu  Choices:  Structure  ID,
WhiteLine, Default = Structure ID)
Scroll through all SetUp menu choices to exit the SetUp menu.
Structure  ID® represents  weak  returns as  light  pixels and
strong returns as dark pixels.  This has the benefit of ensuring
that strong returns will be clearly visible on the display. 
Black (Bottom  Black)  displays  all  pixels  below  the  bottom
contour as black, regardless of signal strength. This has the
benefit of providing a high contrast between the bottom and
other sonar returns on the display.
NOTE: Not available on Color Models.
WhiteLine® highlights the strongest sonar returns in white
resulting  in  a  distinctive  outline.    This  has  the  benefit  of
clearly defining the bottom on the display. 
Inverse is  a  method  where  weak  returns  are  shown  with
dark pixels and strong returns with lighter pixels.  This has the
benefit of ensuring that weak signals will be clearly visible on
the display.  
NOTE: Not available on Color Models.
Battery Alarm (SetUp Menu)
(Setting Saved in Memory)
Make sure that the SetUp menu is selected, then press the POWER-MENU key until
BATTERY ALARM appears. Select Off or 6.2 to 8.3 Volts. Battery Alarm sounds when the
input battery voltage is equal to or less than the menu setting. (Off, 6.2 to 8.3 Volts,
Default = Off)
Scroll through all SetUp menu choices to exit the SetUp menu.
Language (SetUp Menu)
(Setting Saved in Memory, 
International only)
Make sure that the SetUp menu is selected, then press the POWER-MENU key until
LANGUAGE appears (International Units only). LANGUAGE selects the display language
for menus. (Settings vary, Default = English)
Scroll through all SetUp menu choices to exit the SetUp menu.
Units (SetUp Menu)
(Setting Saved in Memory, 
International only)
Make sure that the SetUp menu is selected, then press the POWER-MENU key until
UNITS appears (International Units only). UNITS selects the units of measure. (Feet/F,
Meters/C, Fathoms/C, Default = Meters/C, where F stands for Fahrenheit and C stands
for Celsius)
Scroll through all SetUp menu choices to exit the SetUp menu.
SideFinder™  
(Setting Saved in Memory, 
Downlooking and SideFinding™ Sonar Units only)
Press the POWER-MENU key until SIDEFINDER appears.  Select either OFF or ON to
display the SideFinder™ window on the screen (Off, On, Default = Off)
SideFinder™ Range 
(Setting Saved in Memory, 
Downlooking and SideFinding™ Sonar Units only)
Press the POWER-MENU key  until SIDEFINDER  RANGE appears.   Select  the desired
range for the SideFinder™ beam. (30, 60, 90, 120, Default = 30)
SideFinder™ Filter 
(Setting Saved in Memory,
(Downlooking and SideFinding™ Sonar Units only)
Press the POWER-MENU key until SIDEFINDER FILTER appears.  The sidefinder filter is
used to reduce false markings from submerged objects like pier poles and submerged
branches.  The filter is best used around docks and other shoreline structures where
false markings might occur.  In most situations, and especially in open water, the best
performance  is obtained with the filter turned off.  Select either Off on On (Off, On,
Default = Off)
Maintenance
Your Fishin’ Buddy® is designed to provide years of trouble-free operation with virtually no
maintenance. Follow these simple procedures to ensure your Fishin’ Buddy® continues to
deliver top performance.
If  the  unit  comes  into  contact  with  salt  spray,  wipe  the  affected  surfaces  with  a  cloth
dampened in fresh water. 
Do not use a chemical glass cleaner on the lens - this may cause cracking in the lens.
When cleaning the LCD protective lens, use a chamois and non-abrasive, mild cleaner. Do
not wipe while dirt or grease is on the lens. Be careful to avoid scratching the lens.
If your transducer remains in the water for long periods of time, marine growth can reduce
the effectiveness of the transducer. Periodically clean the face of the transducer with liquid
detergent. 
If your transducer remains out of the water for a long period of time, it may take some time
to wet the transducer when returned to the water. Small air bubbles can cling to the surface
of the transducer and interfere with proper operation. These bubbles dissipate with time, or
you can wipe the face of the transducer with your fingers after the transducer is in the water.
Never leave the unit in a closed car or trunk—the extremely high temperatures generated in
hot weather can damage the electronics.
Troubleshooting
Do not attempt to repair the Fishin’ Buddy® yourself. There are no user-serviceable parts
inside,  and  special  tools  and  techniques  are  required  for  assembly  to  ensure  the
waterproof  integrity  of  the  housing.  Repairs  should  be  performed  only  by  authorized
Humminbird® technicians.
Many requests for repair received by Humminbird® involve units that do not actually need
repair.  These  units  are returned  “no  problem  found.”  If  you  have a problem  with  your
Fishin’  Buddy®,  use  the  following  troubleshooting  guide  before  calling  the  Customer
Resource Center or sending your unit in for repair. 
1.  Nothing happens when I turn the unit on.
Check the power cable connection at both ends. Check the power connection to the
Fishin’ Buddy®. It is possible to force the power cable connector into the cable holder
incorrectly. If the connector is reversed, the unit will not work. Examine the contacts on
the back of the unit to ensure there is no corrosion.  Check the unit’s batteries; try
changing the batteries.
2.  There is no transducer detected.
The Fishin’ Buddy® has the ability to detect and identify that a transducer is connected.
When powering on, if a message indicates “transducer not connected”, make sure that
an appropriate transducer connector is plugged into the unit. In addition, inspect the
transducer for breaks, kinks, or cuts in the outer casing of the cable. Also make sure that
the transducer is fully submerged in water. If none of these actions identifies an obvious
problem, the transducer itself is probably at fault. Be sure to include the transducer if
returning the unit for repair. 
3. There is no bottom reading visible on the display.
In very deep water, it may be necessary to increase the sensitivity setting manually
to maintain a graphic depiction of the bottom.  The batteries may also need to be
replaced. If none of these actions identifies an obvious problem, the transducer itself
may be at fault. Be sure to include the transducer if returning the unit for repair.
4. When in very shallow water, I get gaps in the bottom reading and inconsistent
digital depth indication.
The Fishin’ Buddy® will work reliably in water 3 feet (90 cm) or deeper. Remember that
the depth is measured from the transducer, not from the surface of the water.
5. The display begins to fade out. Images are not as sharp as normal.
Try adjusting the contrast setting on the Monochrome Models.  If this does not help,
replace the batteries..
6. The display shows many black dots.
You are seeing noise or interference caused by one of several sources. Noise can be
caused by electronic devices. Turn off any nearby electronics and see if the problem
goes away. Noise can also be caused by the engine. If engine noise is causing the
interference, the problem will intensify at higher RPMs. Increase the engine speed with
the boat stationary to isolate this cause. Propeller cavitation can also appear as noise
on the display. If the transducer is mounted too close to the propeller, the turbulence
generated  can  interfere  with  the  sonar  signal.  Make  sure  that  the  transducer  is
mounted at least 15" (380 mm) from the propeller.
International Purchases
A separate warranty is provided by international distributors for units purchased outside
the United States. This warranty is included by your local distributor and this distributor
maintains local service for your unit.  Warranties are only  valid in the area of intended
distribution.  Units purchased  in the  United States or Canada  must be returned  to  our
factory in the United States for service. 
Contact Humminbird®
Your Humminbird® accessory is designed for trouble-free operation 
and is backed by a one year warranty. If you have any questions, 
contact our Humminbird® Customer Resource Center:
By Telephone 
(Monday - Friday 8:00 a.m. to 4:30 p.m. Central Standard Time):
1-800-633-1468
By e-mail 
(typically we respond to your e-mail within three business days): 
cservice@johnsonoutdoors.com
For direct shipping, our address is:  
Humminbird 
Service Department 
678 Humminbird Lane 
Eufaula, AL  36027 USA
This warranty does not apply to a product that has been:
• Improperly installed;
• Used in an installation other than that recommended in the product installation
and operation instructions;
• Damaged or has failed because of an accident or abnormal operation;
• Repaired or modified by entities other than Humminbird®.
Please retain your original receipt as a proof of the purchase date. This will be required for
in-warranty service.
THIS WARRANTY IS EXPRESSLY IN LIEU OF ANY OTHER WARRANTIES, OBLIGATIONS OR
LIABILITIES ON THE PART OF HUMMINBIRD® AND WILL BE THE CUSTOMER'S EXCLUSIVE
REMEDY,  EXCEPT  FOR  ANY  APPLICABLE  IMPLIED  WARRANTIES  UNDER  STATE  LAW
WHICH ARE HEREBY LIMITED IN DURATION TO ONE YEAR FROM THE DATE OF ORIGINAL
PURCHASE.  IN NO EVENT  WILL HUMMINBIRD® BE  LIABLE FOR ANY  INCIDENTAL  OR
CONSEQUENTIAL DAMAGES FOR BREACH OF ANY  EXPRESS OR IMPLIED WARRANTY
RELATING TO THE PRODUCTS.
Some states do not allow limitations on an implied warranty, or the exclusion of incidental
or consequential damages, so the above exclusions may not apply to you. You may also
have other rights, which vary from state to state.
Humminbird® Service Policy
Even though you'll probably never need to take advantage of our incredible service policy,
it's good to know that we back our products this confidently. We do it because you deserve
the best.  We will make every effort to repair your unit within three business days from the
receipt of your unit at our factory. This does not include shipping time to and from our
factory. Units received on Friday are typically shipped by the following Wednesday, units
received Monday are typically shipped by Thursday, etc.
All  repair  work  is  performed  by  factory-trained  technicians  to  meet  exacting  factory
specifications.  Factory-serviced  units go through the same  rigorous  testing and quality
control inspections as new production units.
After the original warranty period, a standard flat rate service charge will be assessed
for each repair (physical damage and missing parts are not included).  Any repairs made
after the original warranty will be warranted for an additional 90 days after service has
been performed by our factory technicians.  You can contact our Customer Resource
Center or visit our website to verify the flat rate repair fee for your product (visit the
Product Support section):
http://www.humminbird.com
We reserve the right to deem any product unserviceable when replacement parts are no
longer available or impossible to obtain. This Service Policy is valid in the United States
only.    This  applies  only  to  Humminbird®  products  returned  to  our  factory  in  Eufaula,
Alabama.  This Service Policy is subject to change without notice.
Returning Your Unit for Service
Before sending your unit in for repair, please contact the factory, either by phone or by
email, to obtain a Repair Authorization Number for your unit.  Please have your product
model name and serial number available before calling the factory.  If you contact the
factory by e-mail, please include your product model name and serial number in the e-
mail, and use Request for Repair Authorization Number for your e-mail subject header.
You  should  include  your  Repair  Authorization  Number  in  all  subsequent
communications about your unit.
For IN-WARRANTY service, complete the following steps:
• Obtain a Repair Authorization Number from the Humminbird® Customer Resource
Center. 
• Tag product with your name, street address, phone number and your assigned
Repair Authorization Number.
• Include a brief written description of the problem.
• Include a copy of your receipt (to show proof and date of purchase).
• Return  product  freight  prepaid  to  Humminbird®,  using  an  insured  carrier  with
delivery confirmation.
For OUT-OF-WARRANTY service, complete the following steps:
• Obtain a Repair Authorization Number from the Humminbird® Customer Resource
Center. 
• Include payment in the form of credit card number and expiration date, money
order or personal check. Please do not send cash.
• Tag product with your name, street address, phone number and your assigned
Repair Authorization Number.
• Include a brief written description of the problem.
• Return  product  freight  prepaid  to  Humminbird®,  using  an  insured  carrier  with
delivery confirmation.
2a. If  you  are  using  C-clamp  mounting,
loosen  the  C-clamp  by  turning  it
counterclockwise  and  then  place  the
bracket around the gunnel or transom,
resting it on the top surface (or as far
down as possible). 
Tighten the C-clamp by turning the knob lightly by hand. The knob will stop turning
when the clamp touches the transom. Then, turn the knob up to two full additional
revolutions.  If  the  mounting  bracket  is  not  stable  after  tightening  by  hand,  try
repositioning the bracket.
OR…
2b. If  you  are  using  the  permanent
mounting  technique,  use  the  four
permanent  mounting slots at the base
of the mounting bracket as a drill guide,
and  drill  four  7/64”  pilot  holes  on  the
mounting  surface  you  have  selected.
Apply  a  generous  amount  of  marine-
grade silicone sealant to the holes, then
re-position  the  mounting  bracket,  and
attach  it  to  the  boat  using  #10  wood
screws  or  bolts  (not  included).  Hand
tighten only!
Permanently Mounting the Bracket
Mounting
Screws
Permanent 
Mounting 
Slots
Transom
CAUTION: Do not over-tighten the C-clamp. Tightening the C-clamp more than
the recommended two revolutions may cause permanent damage.
Attaching the C-Clamp to the Transom
Bracket
Clamp Transom
1-Year Limited Warranty
We warrant the original retail purchaser that products made by Humminbird® have been
manufactured free from defects in materials and workmanship. This warranty is effective
for one year from the date of original retail purchase. Humminbird® products found to be
defective  and  covered  by  this  warranty  will  be  replaced  or  repaired  free  of  charge  at
Humminbird®  option  and  returned  to  the  customer  freight  prepaid.  Humminbird®  sole
responsibility under this warranty is limited to the repair or replacement of a product that
has been deemed defective by Humminbird®. Humminbird® is not responsible for charges
connected with the removal of such product or reinstallation of replaced or repaired parts.
S P E C I F I C A T I O N S
Downlooking Sonar 
All  Fishin'  Buddy®  models  come
equipped  with  Downlooking  Sonar
which  sends  sound  waves  from  the
bottom  of  the  transducer  into  the
water directly below the transducer.
SideFinding™ Sonar
120/130/140c Fishin’ Buddy® models
come  equipped  with  SideFinding™
Sonar in addition to the Downlooking
Sonar  to  scan  where  you  cast  and,
with good accuracy, determine which
echoes  are from fish  and  which  are
from  other  objects.  Fish  that  are
startled  by  your  boat  and  move 
away  would  not  be  seen  with  a
conventional depthfinder. 
The  SideFinding™  SONAR  beam
comes  out  from  the  flat  side  of  the
transducer  housing  at  the  bottom  of
the  shaft  which  is  aligned  with  the
handle  at  the  top  of  the  transducer
shaft. When searching for fish, make
sure  the  handle  points  toward  the
area of your search. The handle faces
the  opposite  direction  from  the
transducer.
Transducer
Adjusting the Fishin’ Buddy® 
Mounting Shaft 
(130 and 140c Fishin’ Buddy® units only)
Telescoping Shaft
Shaft 
Collar
Dropping the Fishin’ Buddy® 
into the Mounting Bracket
Mounting Bracket
Support Arm Ring
Shaft 
© 2007 Humminbird®, Eufaula AL, USA. All rights reserved.
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