Magnum 5 ST
Magnum 10 STX
Magnum 10 STX TS
Owner’s Manual
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Introduction
Overview
Thank you for purchasing the Cannon Magnum electric downrigger. We have designed your new downrig-
ger to be an accurate and reliable tool that will enhance fishing control and improve your ability to catch
fish.
This manual covers installation and the functions of the Magnum 5 ST, Magnum 10 STX, and Magnum 10
STX TS. The Tournament Series version of the Magnum 10 is fitted with a cast stainless steel reel,
brushed finish stainless steel boom, and a white frame.
Safety and Cautions
Your Cannon downrigger should only be used for its intended purpose. Improper use will void the warranty
and may be a safety risk.
We hope that you enjoy the use of your new downrigger and enjoy the benefit of controlled depth fishing for
years to come by always following safe boating practices and laws for wherever you are fishing.
Read this manual carefully before operating your new Cannon Downrigger. Retain this manual for future
reference.
Warranty and Registration
To receive all the benefits for your product warranty please fill out and mail the registration card. You may
Magnum 5 ST
Magnum 10 STX
Magnum 10 STX TS
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CANNON LIMITED WARRANTY
CANNON® SERVICE POLICY
AFTER THE APPLICABLE WARRANTY PERIOD
Johnson Outdoors Marine Electronics, Inc. warrants to the original
purchaser that if the accompanying product (see exclusions below)
proves to be defective in material or workmanship within the following
warranty periods, Johnson Outdoors Marine Electronics, Inc. will, at its
option, either repair or replace same without charge (but no cash
refunds will be made):
After the applicable warranty period, or, if one of the above exclu-
sions applies, Cannon products will be repaired for a charge of parts
plus labor. All factory repairs, after the applicable warranty period,
carry a 90-Day Limited Warranty, subject to the exclusions and limita-
tions stated above.
1) The boom, motor, and reels, plus all composite parts, including
but not limited to frames and bases, will be free from defects in
materials and workmanship, subject to normal wear and tear,
for the original purchaser's lifetime.
TO ENFORCE WARRANTY OR TO
2) All other items will have 1-year limited warranties from the
date of original retail purchase, except THE FOLLOWING
ITEMS THAT HAVE NO WARRANTY WHATSOEVER: boot
covers, clothing, Dacron line, rubber bands, swivel lock pin,
weights, and wire cable.
This limited warranty may be enforced only by the original
purchaser; all subsequent purchasers acquire the product "as
is" without any benefit of this limited warranty. Repair or
replacement of the product as set forth in this limited warranty
shall be the original purchaser’s sole and exclusive remedy
and Johnson Outdoors Marine Electronics, Inc.’ sole and
exclusive liability for breach of this warranty.
OBTAIN REPAIRS AFTER WARRANTY
To obtain warranty service in the U.S., the downrigger or part be-
lieved to be defective and the proof of original purchase (including the
date of purchase) must be presented to a Cannon Authorized Service
Center or to Cannon’s factory service center in Mankato, MN. Except
as noted below, any charges incurred for service calls, transportation
or shipping/freight to/from the Cannon Authorized Service Center or
Cannon’s factory, labor to haul out, remove, re-install or re-rig prod-
ucts for warranty service, or any similar items are the sole and exclu-
sive responsibility of the purchaser. Downriggers purchased outside of
the U.S. (or parts of such downriggers) must be returned prepaid with
proof of purchase (including the date of purchase and serial number)
to any Authorized Cannon Service Center in the country of purchase.
Warranty service can be arranged by contacting a Cannon Authorized
Service Center listed on the enclosed sheet, or by contacting the fac-
tory at 1-800-227-6433 or Fax 1-800-527-4464. If the necessary re-
pairs are covered by the warranty, we will pay the return shipping
charges to any destination within the United States.
EXCLUSIONS
This warranty does not apply in the following circumstances:
• When the product has been connected, installed, combined,
altered, adjusted, serviced, repaired, or handled in a manner
other than according to the instructions furnished with the
product
DO NOT return your Cannon downrigger or parts to your retailer. Your
retailer is not authorized to repair or replace them.
• When the motor housing is opened by anyone other than
Cannon® Authorized service repair personnel.
Major parts, such as the motor and main frame, must be returned
to Johnson Outdoors Marine Electronics, Inc. in Mankato, Minnesota,
or a Cannon Authorized Service Center, for repair or replacement. To
reduce shipping costs, we suggest removal of loose parts such as the
boom and rod holders. Small parts that can be easily removed such
as the handle and/or the counter, may be removed from the downrig-
ger and returned for repair or replacement.
• When any defect, problem, loss, or damage has resulted from
any accident, misuse, negligence, carelessness, or abnormal
use, or from any failure to provide reasonable and necessary
maintenance in accordance with the instructions of the owner's
manual
LIMITATION AND EXCLUSION OF IMPLIED WARRANTIES AND
CERTAIN DAMAGES
Retain your sales receipt! Proof of purchase must accompany
product when returned.
THERE ARE NO EXPRESS WARRANTIES OTHER THAN
THESE LIMITED WARRANTIES. JOHNSON OUTDOORS MARINE
ELECTRONICS, INC. DISCLAIMS LIABILITY FOR INCIDENTAL AND
CONSEQUENTIAL DAMAGES, AND IN NO EVENT SHALL ANY
IMPLIED WARRANTIES (EXCEPT ON THE BOOM, MOTOR,
REELS, AND ALL COMPOSITE PARTS), INCLUDING ANY IMPLIED
WARRANTY OF MERCHANTABILITY OR FITNESS FOR
PARTICULAR PURPOSE, EXTEND BEYOND ONE YEAR FROM
THE DATE OF PURCHASE (AND IN THE CASE OF THE BOOT
COVERS, CLOTHING, DACRON LINE, RUBBER BANDS, SWIVEL
LOCK PIN, WEIGHTS, AND WIRE CABLE, JOHNSON OUTDOORS
MARINE ELECTRONICS, INC. DISCLAIMS ALL IMPLIED
WARRANTIES). THIS WRITING CONSTITUTES THE ENTIRE
AGREEMENT OF THE PARTIES WITH RESPECT TO THE
SUBJECT MATTER HEREOF; NO WAIVER OR AMENDMENT
SHALL BE VALID UNLESS IN WRITING SIGNED BY JOHNSON
OUTDOORS MARINE ELECTRONICS, INC.
Return Address:
Cannon
121 Power Drive
Mankato, MN 56001
FOR YOUR INFORMATION:
____________________Serial No.
_________________Date Purchased
___________Store Where Purchased
RETAIN THIS SECTION FOR YOUR RECORDS
Some states do not allow limitations on how long an implied warranty
lasts or the exclusion or limitation of consequential damages, so the
above limitation or exclusion may not apply to you. This warranty
gives you specific legal rights, and you may also have other rights that
vary from state to state.
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Introduction to Controlled Depth Fishing
Undoubtedly there are many fishermen familiar
with the methods and use of controlled depth fishing.
During the mid 1960's the state of Michigan intro-
duced Pacific salmon into the Great Lakes in an at-
tempt to revitalize its sport fishing industry. From this
successful transplant, new fishing techniques and
equipment were developed. One such method was
controlled depth fishing which enabled fishermen to
place a lure at a desired depth by utilizing downrig-
gers.
Because of the varying factors (water tempera-
ture, thermocline, weather, tides, time of day, or time
of year) it is necessary for successful fishing to main-
tain specific water depths that coincide with fish
movements and feeding patterns.
One essential feature of the downrigger is the depth
meter or gauge that indicates lure depth. This allows
the angler to control as well as return to specific
depths where fish have been caught.
Due to the success of controlled depth fishing,
downriggers are now being used throughout the
world to catch a wide variety of species in both fresh
and salt water. Whether fishing for blues off Rhode
Island, walleyes in Lake Erie, sailfish off the coast of
Florida, or stripers in Tennessee, the use of down-
riggers will make your fishing more successful and
more enjoyable.
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2
1
8
4
5
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Magnum 10 STX TS
Parts Description
1. Reel
This is used to spool the cable, available in lengths ranging from 150 to 400 feet.
2. Boom
This is used to extend the weight out from the body of the downrigger and has a pulley fixed
to its end. Boom lengths range from 24 to 53 inches. Boom is a fixed 24 inches on the
Magnum 5 ST model.
3. Swivel Head
4. Cable
This relays the cable at the end of the boom to lower the weight.
This connects to the weight. Cable material is 150 lb. test stainless steel cable.
5. Toggle Switch This controls the power to the downrigger, up and down.
6. Mounting Base This attaches to the boat, enabling you to place the downrigger where you choose.
7. Rod Holder
This holds your fishing rods while trolling and may also be used for storing rods.
8. Boom Clamps These lock the boom sections together after the boom has been extended or retracted.
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Downrigger Mounting on Boats
A downrigger should be mounted wherever it is
easy to operate and observe. You want to be able to
see your fishing rod and to react quickly. So,
choosing a good location to mount your downrigger
on your boat is very important.
Arrows Indicate
Typical Mounting
Locations
Due to the great variety of boats available,
mounting your downrigger can be a difficult decision.
Cannon has a complete line of mounting and fishing
accessories to aid in your fishing experience. Before
making any permanent changes to your boat consider
what accessories might be used in your application.
Decks up to
7/16" Thick
Installing the Base on Your Boat
Decks up to 7/16" thick
Where access to the underside of the deck is not
available, the mounting base can be mounted using
wellnuts. Use the base as a template to mark locations
and drill four wellnut clearance holes. Mount the base
using four 1/4-20 x 1-1/2" truss head screws and four
wellnuts. Tighten the screws so the wellnuts are firmly
compressed as pictured.
Decks Thicker
Than 7/16"
Thick
Decks thicker than 7/16"
For decks thicker than 7/16", or where the
underside of the deck is accessible, mount the base
with screws, nuts, and washers. Use the base as a
template to mark the locations and drill four 9/32" holes.
Use four 1/4-20 x 2" truss head screws and four each
flat washers and nuts. Fasten the base to the deck as
pictured. NOTE: Wellnuts SHOULD NOT be used on
decks thicker than 7/16".
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Decks thinner than 1/4"
The Low-Profile Swivel Base mounting follows the same
procedure as for the deck plate except that four 1/4"-20
x 1-1/2" truss head screws are used to fasten the
mounting base and four additional 1/4"-20 x 2" truss
head screws fix the swivel base to the boat deck.
Use a Cannon deck plate (PN 2200693) to prevent
deflection and add stability to decks thinner than 1/4".
Use the deck plate as a template to mark the hole
locations.
If access to the underside of the deck is not
available, the deck plate can be mounted using screws
and wellnuts. Use the deck plate as a template to mark
locations and drill 4 wellnut clearance holes. Use four
1/4-20 x 1-1/2" flat head screws and four wellnuts to
mount deck plate. Tighten the screws so the wellnuts
are firmly compressed.
Low-Profile Swivel Base
Where the underside is accessible, the deck plate
can be mounted using screws, nuts, and washers. Drill
9/32" holes. Use four 1/4-20 x 1-1/2" flat head screws,
nuts and washers (flat and lock). Fasten plate to deck.
To secure the mounting base to the deckplate use four
1/4-20 x 1" truss head screws.
NOTE: When using the telescopic boom, we
strongly recommend the use of a deck plate on all
boats to provide adequate stability for the
downrigger.
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INSTALLING THE BOOM AND BALL HOOK
1) Remove the ball hook collar, ball hook, and 1/4-20
nut from the included hardware bag assembly.
2) Thread the nut onto the ball hook, then thread the ball
hook into the ball hook collar. Do not tighten yet.
(Figure 1)
3) Slide ball hook collar onto the end of the boom and
leave it loose. (Figure 2)
4) Insert boom with ball hook collar assembly into frame
(Figure 3) and line up holes in boom with holes in frame
(Figure 4).
FIGURE 1
FIGURE 2
FIGURE 3
5) Remove 1/4-20 x 2” bolt and 1/4-20 nylon locknut
from included hardware bag assembly.
8
FIGURE 4
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6) Insert the 1/4-20 nylon locknut into the hex pocket on
the nose of the frame (motor side of frame). (Figure 5)
7) Insert 1/4-20 x 2” bolt into reel side of frame nose.
With a Phillips head screw driver, thread bolt into the
nylon locknut from step 6. Tighten bolt until the end of
the bolt is flush with the top of the nut. (Figure 6)
8) Slide ball hook collar to your preferred location. Hand
tighten the ball hook into boom tube. Tighten enough so
that there is no movement on the boom. (Figure 7)
FIGURE 5
FIGURE 6
FIGURE 7
FIGURE 8
Important: Do not overtighten ball hook or perma-
nent deformation of the boom is possible.
9) Once ball hook is secure, with a 7/16” wrench, tighten
the 1/4-20 nut until secure with ball hook collar.
(Figure 8)
**TELESCOPIC BOOM ONLY**
To adjust the boom length (with the boom extending
away from you) rotate the clamps (See item # 8 on page
5) approximately ¼ turn counter-clockwise to unlock and
slide the boom section to the desired position. Once in
place, lock the clamps by rotating clockwise until tight.
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BOOM END PULLEY
Telescopic Boom
1) Remove boom end assembly from hardware bag.
2) Remove #8 self tapping screw from hardware bag.
3) Insert boom end post into end of the small tube of the
telescopic boom assembly. (Figure 9)
4) Align hole in boom post with hole in small end tube.
(Figure 10)
FIGURE 9
FIGURE 10
FIGURE 11
5) Secure boom end with #8 screw as shown. Tighten
with Phillips head screw driver. (Figure 12)
Fixed Length Boom (Magnum 5 models only)
1) Remove boom end assembly from hardware bag.
2) Remove boom adapter and #8 self tapping screw
from bag assembly.
3) Insert boom adapter into end of boom. (Figure 11)
4) Align boom adapter hole with hole in boom.
5) Insert boom end assembly into adapter and line up all
three holes (boom post, adapter, and boom).
6) Secure boom end with #8 screw as shown. Tighten
with Phillips head screw driver. (Figure 12)
10
FIGURE 12
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REMOVABLE SPOOL COVER
Your new downrigger comes with a removable
spool cover. By removing this cover, you are able to
gain easy access to your spooled cable and easy
spool removal. This feature allows you to easily ac-
cess tangled line, get it repaired and get you back into
action quickly.
This feature also allows you to have multiple reels
for different types of line. By purchasing additional
reels, you can wind each with a different type of cable
(i.e. Uncoated cable, Coated Cable, Mono, etc.). This
allows you to switch out desired cables quickly and
easily.
FIGURE 13
NOTE: Remove all tension from the line before
removing or replacing the spool.
Follow the below steps to remove the side cover:
1) Loosen and remove the clutch knob. Turn the
clutch knob clockwise until it is free of the motor shaft.
(Figures 13 & 14)
2) Loosen the two 1/4-20 Phillips head screws on op-
posite sides on the cover. (Figure 15)
NOTE: Screws are captured in the cover and will not
come out completely.
FIGURE 14
3) Remove the cover and you now have complete
access to the spool. (Figures 16 & 17)
4) Reassemble by reversing the above steps.
NOTE: Take care when removing the spool over
open water so that the clutch pad or clutch disk
doesn’t get pulled off as well. (Figure 17)
WARNING: Do not touch the cable reel while the
downrigger is in use.
FIGURE 15
11
FIGURE 16
FIGURE 17
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REPLACING THE CLUTCH PAD
To replace the clutch pad, follow the steps for
removing the spool. Once the spool is removed, you
have access to the clutch pad. (Figure 18) Simply pull it
off the shaft and replace. Reassemble the spool and
cover in the reverse order.
FIGURE 18
FIGURE 19
FIGURE 20
ATTACHING THE ROD HOLDER(S)
The locking rod holder(s) incorporate a locking
tooth design which can be easily adjusted every 15°
with the soft grip knob. The symmetrical design will al-
low mounting of the rod holder on either side of the
downrigger or two rod holders at the same time. The
unique two piece design allows independent adjustment
of the rod holder and the rod holder arm in two axes.
(Figure 19)
Caution: This rod holder is intended for use of up to 30
lb. test line only and is not recommended for use with
any tackle IGFA (International Game Fish Association)
rated higher than 30 lb. A safety strap (not included) is
recommended for all applications.
NOTE: The rod holder assembly is not covered un-
der warranty when used with tackle above 30 lbs.
Equipment placed in the rod holders and the loss
thereof is the responsibility of the user and is in no
way warranted by Johnson Outdoors, Inc. Mounting
must be in accordance with the above instructions
and pictures to comply with the product warranty.
To install the rod holder(s):
1) Fasten rod holder to rod holder elbow using supplied
spring and knob.
2 ) Attach the rod holder to the downrigger on either
side using the supplied spring and knob. (Figure 20)
3) Repeat the above steps for the other side if (2) rod
holders are to be mounted.
The rod holders can be adjusted by loosening either
knob until the locking teeth are free from each other.
Rotate the rod holder or arm to the desired position and
re-tighten knob. (Figure 21)
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FIGURE 21
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TERMINATING THE DOWNRIGGER CABLE
TIP: Use only straight cable when routing through the terminator. Worn or kinked cable can be
stressed and may break prematurely when retrieving trolling weights.
ATTACHING THE LINE RELEASE (UNI-RELEASE)
The Cannon Uni-Release attaches directly to the
downrigger weight. Attach fishing line to the clip at the
end of the release, and then click through a series of
increasing tension settings. The release can be used
with any test line on salt or fresh water and may be
adjusted from 2 to 22 pounds of grip tension on the
line.
To change line release tension, turn tension knob
to (+) to increase or (-) to decrease. Tension also may
vary according to where the line is placed in the grips.
Higher tension is on the line if it is set back toward the
hinge, and lower if set closer to the opening. To open
the release, spread the release arms with thumb and
forefinger applying pressure to the sides.
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USING THE INCLUDED POWER LOSS MANUAL
CRANK HANDLE
In case of a dead battery, your downrigger comes
equipped with a power loss manual crank handle. This
handle allows for the retrieval of your weight should you
lose power or have an electrical failure. To utilize the
handle follow the below steps.
WARNING: LOOSENING OR REMOVING THE
CLUTCH KNOB WILL RELEASE THE SPOOL AND
ALLOW IT TO RUN FREE. MAKE SURE YOU HOLD
THE SPOOL BEFORE REMOVING THE CLUTCH
KNOB.
FIGURE 22
1) Unplug downrigger and secure reel, see note above.
2) Rotating clockwise, remove the clutch knob.
(Figure 22)
CAUTION: Take care when removing the clutch
knob over open water.
3) Install the handle’s hex pattern to match the hex pat-
tern on the spool. Once installed, you can start cranking
up your weight. (Figure 23)
FIGURE 23
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Wiring Your Downrigger
Your Boat's Electrical Condition
It is important to make sure that your boat is properly set up before installing your Magnum with Positive Ion
Control (PIC). Whenever a boat is in water, various submerged parts interact to create weak electrical currents.
These weak electrical currents must be controlled to extend the life of the boat's metal parts and ensure a good fish
catching environment.
Check the zinc sacrificial anodes on your boat and on the outboard/outdrive. If they are more than 50% dis-
solved they should be replaced. Any coating of slime or growth should be cleaned off. All metal parts including the
hull (if metal) must be interconnected by a grounding wire. This includes motor shafts, outdrives, and through hull
fittings. If your boat and zinc anodes are set up correctly, the voltage on the stainless steel downrigger wire should
be positive when in contact with the water.
With your boat in the water and the downrigger cable deployed in the water, measure the dc voltage from the
cable to a grounded metal surface of the boat touching the water. It should be 0.6-0.8VDC if properly wired.
•
•
The use of Cannon vinyl coated lead weights is recommended.
Use the trolling weight insulators supplied with your downrigger. This insulates your weight from the positive
charge on the cable. This will also ensure that the trolling weight will stop at water level when retrieved.
•
•
•
The cable on your downrigger should be replaced every 2 years. Etching of the cable can weaken it physically
and electrically.
In saltwater, make sure the sacrificial zinc anodes are replaced when half dissolved. This ensures that the boat
will run with a neutral or slightly positive charge. Clean zincs on a regular basis with a non-corrosive brush.
Always make sure the boat is properly grounded to the water. This will help ensure proper PIC voltage on the
cable and that the Short Stop will function properly.
NOTE: To ensure proper operation of your Magnum, ground the battery to your boat’s electrical system’s ground.
Malfunctions with the PIC, communication between units, or loss of operation result from faulty grounding. Always
check to see if your boat is properly grounded first.
Electrical Specifications & Wiring Instructions
The Magnum series is rated at 30 amps (full load), 12 volts DC and is protected by a 25 amp manual reset cir-
cuit breaker (located under motor housing). Be sure to measure the battery voltage of your boat.
WARNING! - DO NOT RUN THIS DOWNRIGGER ON A 24 VOLT BATTERY SYSTEM. THIS WILL DAMAGE
THE UNIT AND VOID YOUR WARRANTY.
Connecting to the Battery:
It is strongly recommended that a fuse or manual reset circuit breaker be installed at the battery on the positive
lead of the power cable or that you connect the downrigger to a battery selector switch. (See Fuse and Wire Speci-
fications) Connect the positive lead (RED) to the (+) post on your battery and the negative lead (BLACK) to the (-)
post on your battery or the downrigger will not operate. Use the quick disconnect plug to remove the downrigger
without touching the battery.
NOTE: It is strongly recommended to power your Magnum with a Deep-Cycle marine battery. Only run a Magnum
from a Starter battery if it is recharged by an alternator while trolling.
Tip: Control degradation of the power cables and limit corrosion by using anti-oxidant gel on all connections.
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FUSE / BREAKER SPECIFICATIONS:
An over-current protection device (circuit breaker or fuse) must be used with this downrigger. Coast Guard re-
quirements dictate that each ungrounded current-carrying conductor must be protected by a manually reset, trip-
free circuit breaker or fuse.
The following breaker size is a recommended guideline:
1 downrigger—30A @ 12 vdc
2 downriggers—60A @ 12 vdc
For additional information, please consult appropriate ABYC (American Boat and Yacht Council) and Coast Guard
requirements.
Reference:
United States Code of Federal Regulations: 33 CFR 183—Boats and Associated Equipment
ABYC E-11: AC and DC Electrical Systems on Boats
Powering Multiple Downriggers
When operating multiple Magnums, run a maximum of 2 downriggers per dedicated battery.
Typical Operating Time*:
1 Magnum per battery –
2 Magnums per battery –
24 hours.
10 hours.
*Time based on lab results using a 15lb weight and Deep-Cycle batteries. Actual run time will vary.
Red ( + )
Black ( – )
Connect Multiple
Batteries in Parallel
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GETTING STARTED
Manual Descent: Fast or Slow
By turning the clutch knob gently clockwise (toward
the boom), you can let your trolling weight descend as
fast or as slowly as you wish. Turning the knob counter-
clockwise (away from the boom) stops the weight. This
gives you control to let it plunge rapidly or sink slowly to
a predetermined trolling depth. With multiple downrig-
gers, you could start all your weights creeping down,
one at a time, and then stop them each in turn.
Powered Descent: One speed fits all.
Hold the toggle switch down until the weight
reaches the desired depth and release. The motor will
stop when switch is released or moved to the off posi-
tion.
RAISE
Raising the Weight
Push the toggle switch up momentarily and release.
The weight will rise until it reaches the surface and then
automatically stop.
If you want to raise the weight farther push the tog-
gle switch up and hold until the weight reaches the de-
sired position, then release.
OFF
To stop the weight during ascent, push the toggle
switch down momentarily (approximately 1 second).
LOWER
NOTE: If your reel continues to slip no matter how hard
you tighten the brake adjust knob. Refer to the Trouble-
shooting section of this booklet.
CAUTION: The brake adjust knob (clutch) should be
adjusted so that it is tight enough to hold the weight and
the lure at the speed you are trolling. Over-tightening
may cause damage to your downrigger when weight
hangs up on bottom structure or other obstacles.
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Adjusting the Depth Meter
The Cannon Depth Meter provides non-slip accu-
racy, plus easy resetting. To reset, just slide the meter
away from the reel until the gears are disengaged. Spin
meter gear to change setting.
NOTE: Actual fishing depth may vary from depth
shown on meter due to trolling speed and weight of
cannon ball. (See "Blowback" on page 21)
The Short Stop System
The Short Stop system is composed of three critical
components: the electronic unit, the reel conductive
path, and the trolling weight insulator.
While the downrigger cable is in the water, there is a
small electrical current that flows between the cable and
the grounded metal boat components in the water.
When the cable clears the water, this current flow will
stop. The Short Stop system senses this interruption
and turns off the motor. The trolling weight insulator is
used to break the cable contact to the water while the
weight is still in the water. The reel conductive path al-
lows the circuit path to be made through the structure of
the downrigger.
NOTE: It may be necessary to use two trolling
weight insulators.
Cable Terminator
Stopping the weight at water level eliminates the
cable strain caused by bouncing weights or weights hit-
ting the boom end. Stopping at water level will also keep
the weight from hitting the boat hull.
Weight Insulator
NOTICE: Short stop and Positive Ion
Control features will not function
when spooled with monofilament or
super lines or if the boat is not prop-
erly grounded.
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Fishing With Your Downrigger
The Positive Ion Control System
Release some line from your rod and reel so that
the lure is anywhere from 5 to 100 feet behind the boat.
This is called drop back. Attach the fishing line firmly
into the line release. Place the fishing rod in the rod
holder and reel up the slack so that your rod has a slight
bend in it. When a fish strikes the lure, the line will sepa-
rate from the release. Then you will be free to fight the
fish and bring it in on your rod and reel.
Your boat has an electrical charge around the hull in
water. If a boat is properly grounded and has a proper
zinc anode, that charge should be slightly positive when
measured from ground to the downrigger cable. Positive
Ion Control (PIC) is the use of electricity to control that
charge and its fluctuation so that it is always maintained
at a specified set voltage.
The practice of setting up and maintaining a slight
positive charge on fishing gear has been used by com-
mercial fishermen for many years. This practice has en-
abled some fisherman to increase yield when used
along with other good fishing and boating practices.
Cannon's electric downriggers offer fishermen a big
advantage in being able to stabilize and control the posi-
tive charge around their boat. Because of the composite
construction of the frame, Cannon downriggers are insu-
lated from your boat's hull charge.
WARNING—DO NOT TOUCH THE CABLE REEL
WHILE THE DOWNRIGGER IS IN USE!
When the stainless steel downrigger cable is low-
ered into the water, the natural ionization between the
cable and the boat creates a positive charge of 0.7 to
0.9 volts in saltwater and 0.3 to 0.6 volts in fresh water.
This natural voltage is dependent upon salinity and min-
eral content of the water. Your actual voltage may vary.
19
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How the Positive Ion Control System Works
The PIC system uses an internal circuit that passes
the voltage through the drive train of the Magnum to the
shaft. The shaft contacts the cable by means of a ball
bearing, spring and, lastly, a one direction button head
screw. Care must be taken to ensure contact between
the cable and the screw when replacing the cable.
When using coated cable, 3-4 ft of coating must be
striped when terminating the cable to reel. Take care in
ensuring that the striped portion is in contact with the
button head screw.
Maintaining Your Downrigger
Periodically, lightly grease the thrust bearing and
bearing race found behind the clutch knob. Replace the
cable at least every two years.
There are no user serviceable parts internal to the
Magnum. Your warranty will be void if opened by
anyone other than an authorized or factory service
center. For repairs or servicing your downrigger re-
fer to the Warranty Information section of this book-
let.
The Positive Ion Control system applies a fixed 0.6
volts on the trolling cable at all times.
Measuring the Natural Electrolysis and PIC Voltage
on Your Boat
A voltmeter with a scale of zero to one volt will
measure the natural electrolysis. Place the ground lead
of the meter on the motor or the battery ground. Place
the positive lead on the stainless steel downrigger cable
while it is in the water. The downrigger must be
unplugged. The voltage you measure on the volt meter
is your boat's natural electrolysis voltage. Use the same
set up to measure the PIC voltage; just plug in the
Magnum and adjust the PIC voltage desired.
Using Positive Ion Control
Positive Ion Control is very effective when trolling.
The zone of attraction created at the downrigger wire
will attract the fish. It is best to use a short drop back
between the downrigger release and the lure. Drop
backs of 10 to 20 ft. are typical. A drop back of 50 to
100 ft. will entirely negate the effects of the PIC circuit.
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Blowback Charts
8-Lb. Weight at 2, 4, and 6 MPH
Blowback
Simply stated, blowback is what happens to the
downrigger weight when you pull it through the water
behind your boat. As your speed increases, so does the
horizontal distance between the weight and your
downrigger. The faster you go, the farther the weight is
behind you. The farther the weight is behind you, the
shallower the weight is.
The following charts provide you with blowback
information for three sizes of Cannon downrigger
weights pulled at three different speeds with no lures
attached and with no current. Current drag, water
salinity and the use of non-Cannon products will affect
your actual trolling depth.
2 MPH
4 MPH
6 MPH
As an example, the first chart shows that if you are
trolling at 4 MPH with an 8 pound weight and you have
100 FT. of cable in the water with no current; the
downrigger ball is actually at a depth of about 80 FT.
Amount of Cable in Water (ft.)
10-Lb. Weight at 2, 4, and 6 MPH
2 MPH
4 MPH
6 MPH
Amount of Cable in Water (ft.)
12-Lb. Weight at 2, 4, and 6 MPH
2 MPH
4 MPH
6 MPH
21
Amount of Cable in Water (ft.)
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Ten Good Trolling Tips
6) Consider special knots and swivels. A good ball
bearing swivel will all but eliminate line twist and will aid
in getting maximum performance from a lure. Many an-
glers add the tiny swivels to split rings already on the
lure itself. On the other hand, a swivel may dampen the
action of a sensitive lure, such as a Rapala. Some fish-
erman tie tiny improved clinch or loop knots. Loop knots
in particular may enhance up and down and side to side
action of lures. Any good fishing manual will explain how
to tie these and other knots.
1) Test your lures over the boat side before sending
them down and back. Do this to make sure the lure wig-
gles and wobbles properly without going belly up or
wandering off. Some lures can be adjusted, fine tuned
actually, to impart maximum action. For example, a
slight bend in the tail of a spoon or twist of the hook eye
in the nose of a plug can make a noticeable difference
in how the lure performs.
Also, when running two or more lures, make sure the
offerings are compatible. Lures that run out of harmony
with each other are bound to tangle and that means
wasted time to straighten out the mess. Testing them
first will avoid the problem.
7) Consider releases for flatline trolling. A good tip
is to secure a piece of downrigger cable or heavy mono-
filament to the water ski hook or handle below the tran-
som of most boats. To the other end of the mono or ca-
ble, add a pinch-r-release. After letting out your lure to
the desire distance, put the rod in its holder, then bend
the tip and secure the fishing line in the release.
2) Consider different sizes, shapes, and colors of
lures. No one has ever figured out with precision what
makes a fish strike or snub a lure. There is no doubt,
that matching the forage (minnows, crayfish, etc.) in
color, shape, action, and size can help trigger those
strikes from hungry fish. On the other hand, if fish such
as bluegills, small mouth bass or Coho salmon are pro-
tecting spawning beds, they may attack whatever is
threatening. So, bright colors in lures may out produce
bland colors.
8) Add a weed guard. Having trouble with weeds
hanging up lures? Consider tying a three-inch piece of
monofilament a foot above the lure. Leaves, smaller
weeds and other debris may catch here momentarily
then fall off to the side of the lure without tangling.
Weedless lures are another smart consideration. Down-
rigger cables are effective weed catchers when trolling
for pike, muskies, or bass in weed-infested lakes.
3) Vary trolling speeds. Goosing the engine now and
then or slowing to a crawl every so often will change the
action of the lures and may get fish to strike them.
9) Add a stinger hook. When fish short strike, slap at
lures without becoming hooked, adding a stinger hook
can solve the problem. Simply tie a treble hook to one
end of a four inch piece of monofilament and then tie the
extra hook to the last gang of hooks on your lure. The
stinger hook, which trails the lure, provides extra insur-
ance.
4) Vary trolling patterns and lead lengths. The
amount of line you let out often determines how deep
the lure will run and, to some extent, what degree of
action it will impart. For starters, consider running lures
about ten feet behind downrigger weights. If flat line
trolling, put them back about fifty feet, then experiment
depending on what the fish do.
10) Keep hooks sharp. Some of the best fishermen
sharpen all hooks after every fish caught. Hooks get dull
through both use and misuse, and probably more fish
are lost to dull points than anything else.
Trolling patterns affect lure action too, that is why
some anglers like to wheel a lazy S course. On turns,
outside lures will speed up momentarily while inside
lures hang for a moment or two. Some fish are attracted
to lures that change speeds. Also, zigzag patterns allow
for more water coverage, plus it keeps lures out of pro-
peller boil, an important consideration for browns and
other wary species.
5) Locate fish on a vertical plane. Place lures in ar-
eas where fish might be. Skilled fishermen call these
areas the “strike zones”. They include the edges of the
weed beds, structure along bottom, drop-offs, preferred
temperature of the target species, and the thermocline.
Remember that fish occupy certain areas for certain
reasons (sources of food, protective cover, preferred
temperatures, etc.).
22
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Troubleshooting
PROBLEM:
Clutch slips
SOLUTION:
PROBLEM:
In the UP or AUTO-UP mode the downrigger stops
periodically or the circuit breaker trips repeatedly.
SOLUTION:
•
Retighten clutch knob. Clutch knob should be
•
Low battery. The battery voltage at the power cord
is less than 11.5 volts (measure with a volt meter
while the downrigger is pulling up the weight).
just tight enough that the clutch does not slip
when downrigger is in normal use. Do not use
tools of any kind to tighten the clutch, hand
tightening should always be sufficient.
•
•
Power cable is too long or too small in diameter.
•
Check clutch disc condition by removing side
cover and spool. Replace if necessary.
Do not overload the downrigger. It is designed to lift
up to 20 lb. weights only.
PROBLEM:
The Magnum fails to continue running after toggle
PROBLEM:
Unit does not turn on.
SOLUTION:
switch is pushed up and held momentarily, while
cable is still in water, or is having problems with the
PIC voltage.
•
•
Check polarity on power cable.
Check Circuit breaker (s)
SOLUTION:
Make sure your boat is properly grounded. A boat
that is properly grounded has an electrical path from
the negative battery terminal to all metal parts on
the boat that contact water. Additionally, in saltwater
the boat must be have a proper sacrificial zinc an-
ode and show a natural electrolysis voltage of 0.7 to
0.9 volts. The voltage supply to your downrigger
must also be bonded to the boat.
PROBLEM:
Unit does not count the depth correctly.
SOLUTION:
Reel no longer has 250 ft of cable. If your reel has
more or less than 250 ft of cable this can affect the ac-
curacy of the counter.
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THIS PAGE INTENTIONALLY LEFT BLANK
37
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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 manu-
facturers 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 de-
signed 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 dis-
posed 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 collec-
tion, treatment, recovery, and environmentally sound disposal of those products; however, these requirement do vary within European Union mem-
ber 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.
To download product manuals or purchase Cannon products from an authorized dealer, please visit our web page at
Cannon
Johnson Outdoors Marine Electronics, LLC.
121 Power Drive, Mankato, MN 56001
1-800-227-6433
©2010 Johnson Outdoors Marine Electronics, LLC. All rights reserved. Product conforms to EU EMC directive
204/108/EC and Machinery Directive 2006/42/EC.
WARNING: This product contains chemical(s) known to the state of California to cause cancer and/or reproduc-
tive toxicity.
Form No. 3397130 Rev D ECN 32943 01/11
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