Overview
Follow the instructions in  this  installation  guide  to assemble  the  PiranhaMAX
portable  mount  and  install  the  control  head.  It  is  important  to  perform  the
PiranhaMAX portable case assembly tasks in order, referring to the step-by-step
procedures that represent the following main assembly tasks:
• Assembling the PiranhaMAX mount
• Assembling the base and handle
• Assembling the control head to the base and handle
• Routing the cables in the base
• Assembling the portable case
• Charging and installing the battery
• Assembling the transducer mounting bracket
• Stowing the portable transducer and battery charger into the portable case.
When you are done, the control head and the transducer will be part of the portable
case assembly, and you will be ready to take your portable case to the boat for final
setup.
Supplies: In addition to the hardware supplied with your installation kit, you will
need a hammer, Phillips screwdriver, socket wrench, and a rope or bungee cord.
NOTE: The illustrations in this guide may not look the same as your product, but
your unit will function in a similar way.
Portable Case Assembly
1. Assemble the Control Head Base
Your control head base will have a tilt and
swivel mount. See the instructions below to
assemble and mount the control head base.
1. Insert the mount  arms  into  the base.
Then, hold the mount arms in place as
you turn the base upside down.
2. Insert  the  swivel  ring  into  the  base,
with the countersink holes for the arm
screws facing out.
3. Secure the mount arms with the four #6
screws  provided  (Figure  1).  Hand
tighten only!
2. Assemble the Base and Handle 
In  this  procedure,  you  will  install  the
PiranhaMAX mount and handle to the base
of the portable case.
1. Turn the base upside down. Punch out
the mounting holes labeled “C” with a
hammer and a screwdriver (or an awl)
as shown in Figure 2.
2. Turn the base right side up. Line up the
PiranhaMAX  mount  with  the  holes
you punched out in step 1.
3.  Using a socket wrench and a Phillips
screwdriver, secure the PiranhaMAX
mount  to  the  base  with  the  four
included 3/4" (19  mm) screws,  lock
washers,  and  nuts  (see  Figure  3).
Hand tighten only!
4.  Install the handle onto the base, so that the curved part of the handle faces
towards the back of the base, towards the battery well. Use the four included 
#8-32 x 7/16" (11 mm) screws, two on each side, to attach the handle to the
base (see Figures 4 and 5). Hand tighten only!
Tilt and Swivel Mount
Control Head Base Assembly
mount arms
base
arm screws, 
(4) #6 x 7/16"
Figure 1
countersink
side out
swivel
ring
Punching Holes
Figure 2
Attaching the Mount to the Base
PiranhaMAX tilt
and swivel mount 
base
Figure 3
Installing the Handle onto the Base
Figure 4
Sliding in the Handle
Figure 5
2.  Assemble the other transducer parts as shown in Figure 17. Hand tighten only!
NOTE: If you are unable to ratchet the transducer so that is rests below the water and
points straight down, you can disassemble it and align the beads with a different number
until you reach a position that allows the proper alignment.
8. Stow the Portable Transducer and 
Battery Charger into the Portable Case
1.  Load the portable transducer into the carrying compartment (upper zip opening
on the back of the portable case) and close the zipper.
2.  Turn the portable case around so that you can access the front, and load the
battery  charger  into  the zip pocket on  the  left as you  face  the  front of  the
portable case.
3.  Make sure all the zippers are closed.
Installing the Portable Case On the Boat
Since the portable case has a large non-skid mounting surface, it may be attached to
almost any surface.
In this section, you will route the cables on the boat, connect the transducer and
power  cables  to  the  portable  case,  and  attach  the  portable  case  to  a  dry  and
convenient location on your boat.
1. Connect the Transducer and
Power Cables to the Portable Case 
1.  Make sure the large opening in the front of the portable case is unzipped. You
may want to roll up the flap and secure it with the provided strap and clip while
you’re working. 
2.  Plug the transducer cable into the jumper port in the portable case to the left of
the control head, as you face the front of the bag (see Figure 19)
3.  Turn the portable case around so that you can access the back, and open the back
zipper. Connect the spade clip on the red wire of the power cable to the red terminal
on the battery, and the spade clip on the black wire of the power cable to the black
terminal on the battery. Make sure that the spade clips are snugly attached to the
terminals (see Figure 20).
4.  Make sure the back battery door and side pockets are zipped, but leave the front
of the bag unzipped for easy access during installation.
2. Attach the Portable Case to the Boat 
1.  Attach the portable case to a surface on the boat by threading rope or bungee cord
(not provided) through the D-rings on either side of the portable case. 
NOTE: Humminbird recommends that you do NOT position the portable case on the
bottom of the boat, or in a location where it can be splashed by or immersed in water,
as the portable case is water resistant, but not waterproof. 
Transducer Knuckle Positions
Figure 15 Figure 16
Ratchets Placed in Position 1
rib at
position 1
knuckle beads
ratchet
Assembling the Plastic Bracket
portable
transducer
assembly
Phillips head
screw
ratchet
Figure 17
bolt
wing nut
washer
suction cup
Ratchets Placed in Position 2
Figure 18
bead
ratchet
rib
Figure 19
Plugging in the Transducer
Connecting the Spade Clips
Figure 20
8.  Turn the base right side up and pull up gently on the battery tie-down straps to
remove the slack.
NOTE: You will need to perform more assembly procedures, as well as charge the
battery for 8 hours, before you install the battery into the portable case. See Charge
and Install the Battery for more information.
5. Assemble the Portable Case
In this procedure, you will install the base assembly into the portable case. 
1. Unzip the largest opening on the front of the portable case.
2. Insert the base assembly into the portable case, so that the PiranhaMAX control
head is facing out of the case. For best results, pull the case over one shoulder
of the handle at a time.
3. Adjust  the  case so  that you  can  easily grab the handle, through  the fabric
handhold inset, from the outside top of the portable case.
6. Charge and Install the Battery
In this procedure you will charge the battery. Once it is charged, you can install it and
secure it.
NOTE: Some international models may not include a battery or battery charger.
WARNING!  Do  NOT  use  the  Humminbird®  charger  with  other  manufacturers’
batteries. The Humminbird charger is only compatible with Humminbird batteries.
1.  Charge the battery, using the included battery charger, until it is fully charged as
indicated by the LED on the charger. Charging usually requires 8 continuous hours,
but may vary depending on your configuration.
2. Open the bottom back zipper on the portable case, and install the battery in the
battery well. While holding the tie-down straps out of the way, make sure the power
cable is fitted snugly into the slot in the well so that the battery does not rest on it
(see Figure 14). 
3.  Pull the two battery tie-down straps over the top of the battery and connect both
ends of each strap over the top, making sure that the straps are pulled tight around
the battery and that the battery is seated securely in the battery well. 
4.  Zip up the back opening.
7. Assemble the Transducer Mounting Bracket
In this procedure, you will assemble the portable transducer mouting bracket.
1. Line up the two ratchet pieces at position 1 so that the beads are aligned with the
rib on the transducer. See Figure 15 and Figure 16.
Figure 13
Holding the Portable Case
Pulling the Case over the Handle
Installing the Base into the Case
Tying Down the BatteryInstalling the Battery
Figure 14
NOTE: Do NOT connect the power cable to the battery at this time. You
should  wait  until just  before  fishing  to  connect  the power cable  to  the
battery.
NOTE: The handle is keyed so that it only fits onto the base in one way.  
3. Attach the Control Head to the Base 
In this procedure you will install the control head onto the base assembly.
1. Insert the thumbknob bolt through the pivot knuckle on the control head.
2. Align the pivot knuckle with the mount arms and slide it into place, twisting
slightly if necessary, until the unit is firmly seated.
3. Rotate the control head to the preferred angle and hand tighten the thumbknob
bolt.
4 . Thread the gimbal knob onto the pivot bolt and tighten.
4. Route the Cables
In this  procedure, you will  route  the  power and transducer jumper cables on the
underside of the base, and attach the tie-down straps that will be used to secure the
battery to the base in a later procedure. 
1. Turn the base upside down, then thread the two included hook and loop battery tie-
down straps from the bottom of the base up through each side of the battery well,
using the strap holes (see Figure 7).
2 . Route the power cable from the mount DOWN
through the center hole of the base. Route the
transducer jump cable UP through the base and
mount. (Figure 8)
3. Connect the cables to the control head. The slots
for  the  plugs  are  keyed  to  prevent  reverse
installation, and insertion should be easy. Do not
force  the  connectors  into  the  control  head.
(Figure 9)
4 .  Pull the power cable through the opening in the
long side of the cable well and insert it into the
battery well (see Figure 10). 
5 . Route the transducer jumper cable (see Figure
10) out the short side of the cable well and follow
the arrows on the base (see Figure 11).
6. Fit the transducer jumper cable connector down into the jumper cable well and
snap it into place. Insert the two #6-32 x 1/4" (6 mm) screws included to secure
the transducer jumper connector and tighten using a Phillips screwdriver. Hand
tighten only!
7.  Secure all cables to the base, using the included zip ties, at the mount points
shown in Figure 12. 
pivot
knuckle
gimbal knob
Attaching the Control Head to the Base and Handle
gimbal
knob
Rear View Front View
Figure 6
thumbknob
bolt
Attaching the Battery Tie-Down Straps
battery 
tie-down straps
Figure 7
Pulling the Cables
Through the Base
Figure 8
Connecting the Cables to the Control Head
Figure 9
Cable Path Under the BaseInstalling the Cables Onto the Base
transducer 
jumper 
cable
screws
power cable jumper cable well
Figure 10 Figure 11
Tying Down the Cables
zip tie
mounting 
point
transducer 
jumper cable
power cable
Figure 12
Mounting the Portable Transducer
Once your Portable fishfinder is fully assembled (see the Portable Case Assembly
section for more information), perform the remaining tasks to mount the transducer
on the boat:
•  Test the transducer prior to installation
•  Mount the portable transducer on the boat
1. T
est the Transducer Prior to Installation
Prior to installation, test the transducer to make sure that no damage occurred during
shipping.
1.  Hold the transducer  in the water over the  side of the boat to confirm proper
operation.
2. Power on the control head and select a Sonar View. If the transducer is working
properly, you should be able to see the bottom on the control head display.
2. Mount the Portable Transducer on the Boat
Perform the procedures in this section to install the transducer on your boat.
It is important that the mounting position allows the transducer to rest beneath the
surface of the water and parallel with the waterline, so the beam element can point
straight down. You can mount the transducer anywhere on the side of the boat if your
boat remains stationary. If you are trolling, it is best to mount the transducer on the
transom of the boat.
Your portable transducer is designed to be installed and adjusted without the use of
tools. Mounting the transducer to the boat is a simple, yet important operation. A poor
mounting location  will affect the overall performance of the Humminbird  unit, so
follow the mounting instructions carefully. 
If you are trolling, it is best to mount the transducer on the transom of the boat.
1.  Mount the transducer so that it is submerged in the water and parallel with the
waterline (see Figures 21 and 22).
2.  Adjust the running angle so that the transducer is parallel to and below the
surface of the water (see Figure 22).
3.  Hand tighten the wing nut so that the transducer will not rotate.
4.  Secure the  transducer cable  in case  of accidental release when the boat is
moving,  since  a  loose transducer  can cause  damage to itself, your  boat,  or
become tangled in the propeller. Attach the tie-down strap to the transducer
cable  around  an  immovable  object  such  as  a  rail  or  fitting,  as  shown  in 
Figure 23.
5.  When you have finished using the transducer, unplug the transducer cable from the
transducer jumper port on the base, then coil the cable around the assembly.
Stowing the Portable Fishfinder
When  you’re  finished  using  your  portable  fishfinder,  it  is  important  to  store  the
transducer and disconnect power.
1. With the boat engine off, loosen all cable retainers/clips holding the transducer.
2. Remove the portable case from the surface mount.
3. Remove the transducer from the surface where it has been mounted, wipe it
dry, and stow it in the portable case rear pocket.
4. Unplug the power cable when not in use. 
5. Make sure all the zippers are closed.
WARNING! The  suction  cup  mount  is  designed  for  quick,  easy
installation and removal, NOT for high speed operation.  If you intend to
operate  your  boat  at any  speed  faster than  trolling  speeds,  remove the
suction cup transducer from the water.
Portable Transducer Mount Transducer Running Angle
Figure 21 Figure 22
Transducer Tie-Down Strap
Figure 23
Maintenance
Your Humminbird fishfinder is designed to provide years of trouble free operation
with  very  little  maintenance.  Use  the  following  procedures  to  ensure  your
Humminbird continues to deliver top performance.
Control Head Maintenance
It is important to consider the following precautions when using your Humminbird
control head:
• such as those found in bug spray and sunscreen, may causeChemicals,
permanent damage to the control head screen. Such damage is not covered
by the warranty.
•NEVER  leave  the  control  head  in  a  closed  car  or  trunk. The  high
temperatures generated in hot weather can damage the electronics. Use
the following information to keep the control head and screen clean.
• To clean the control head screen, use a mild soap (such as a non-Screen: 
abrasive liquid hand soap) and warm water. Wipe the screen dry with a soft
cloth. Be careful to avoid scratching the screen. If water spots remain, use
a solution of water and vinegar.
WARNING! Do not use a chemical glass cleaner on the screen. Chemicals
in the solution may cause cracking in the lens of the unit.
NOTE: Do not wipe the screen while dirt or grease is on the screen.
• If the control head comes into contact with salt spray, wipeControl Head: 
the affected surfaces with a cloth dampened with fresh water.
PiranhaMAX Portable Case Maintenance
•If the portable case comes into contact with salt spray, wipe the affected
surfaces with a lint-free cloth, then apply a commercially available anti-
corrosive treatment to all exposed electrical contacts.
• , clean the bag with mild soap,If the  portable  case  bag becomes dirty
water, and a soft rag or brush and then hang it up to dry.
How to Remove Water from the Portable Case
Open the front zipper and pull the case down to allow water to exit the case. If
needed,  remove  the  case  from  the  plastic  base  and  air-dry  it.  Follow  the
recommended maintenance procedures for salt spray exposure if needed.
Specifications
Power Requirement  . . . . . . . . . . . . . . . . . . . . . . . . 12 Volt sealed lead acid battery; 
up to 16 hours continuous operation
Important Notices
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!  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.
WARNING! This product contains chemicals known to the State of California to
cause cancer and birth defects or other reproductive harm.
WARNING!  Do  NOT  use  the  Humminbird  charger  with  other  manufacturers’
batteries. The Humminbird charger is only compatible with Humminbird batteries. If
you have questions, visit our Web site at humminbird.com or contact Customer Service.
NOTE: Product specifications and features are subject to change without notice.
ENVIRONMENTAL  COMPLIANCE  STATEMENT: It  is  the  intention  of
Johnson Outdoors Marine Electronics, Inc. to be a responsible corporate citizen, operating in
compliance with known and applicable environmental regulations, and a good neighbor in
the communities where we make or sell our products.
WEEE  DIRECTIVE:  EU  Directive 2002/96/EC  “Waste of  Electrical  and  Electronic
Equipment  Directive  (WEEE)”  impacts  most  distributors,  sellers,  and  manufacturers  of
consumer electronics in the European Union. The WEEE Directive requires the producer of
consumer electronics to take responsibility for the management of waste from their products
to achieve environmentally responsible disposal during the product life cycle.
WEEE compliance may not be required in your location for electrical & electronic equipment
(EEE), nor may it be required for EEE designed and intended as fixed or temporary installation
in transportation vehicles such as automobiles, aircraft, and boats.  In some European Union
member states, these vehicles are considered outside of the scope of the Directive, and EEE
for those applications can be considered excluded from the WEEE Directive requirement.
This  symbol  (WEEE wheelie bin)  on  product indicates the product must  not be
disposed of with other household refuse. It must be disposed of and collected for
recycling and recovery of waste EEE. Johnson Outdoors Marine Electronics, Inc. will
mark all EEE products in accordance with the WEEE Directive. It is our goal to comply
in the collection, treatment, recovery, and environmentally sound disposal of those products;
however,  these requirements  do vary within  European  Union  member states.  For  more
information about where you should dispose of your waste equipment for recycling and
recovery and/or your European Union member state requirements, please contact your dealer
or distributor from which your product was purchased.
© 2015 Johnson Outdoors Marine Electronics, Inc. All rights reserved.
CONTACT UMMINBIRDH
Contact Humminbird  Customer Service in any  of the following
ways:
Web site:
humminbird.com
E-mail:
service@humminbird.com
Telephone:
1-800-633-1468
Direct Shipping:
Humminbird
Service Department
678 Humminbird Lane
Eufaula, AL 36027 USA
Hours of Operation:
Monday - Friday
8:00 a.m. to 4:30 p.m. (Central Standard Time)
PIRANHAMAX PORTABLE™
INSTALLATION GUIDE
532460-1_A