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Trolling Motor Performance

Symptom

Possible Cause

Resolution

Loss of power

Weak battery

Refer to 

Wiring and Battery

Information

.

Loose or corroded battery

connections

Propeller is loose,

damaged, or off‑balance

Refer to 

Maintenance

.

Wiring or electrical

connection faulty

Wire gauge from the battery to

the trolling motor is insufficient.

Six‑gauge wire is

recommended.

Weeds, fishing line, or

debris wrapped around

propeller

Remove weeds, fishing line, or

debris from propeller.

Excessive noise,

vibration

Motor shaft is bent

Refer to 

Warranty

Information

.

Propeller is loose,

damaged, or off‑balance

Refer to 

Maintenance

.

Motor failure (all

speeds)

Weak battery

Refer to 

Wiring and Battery

Information

.

Loose or corroded battery

connections

Electrical

Check the connector for a loose

or damaged connection. Refer

to 

Wiring and Battery

Information

.

Fuse on circuit breaker is

open

Replace the fuse or reset the

circuit breaker only after

determining the root cause of

the problem.

Motor failure (one or

more speeds)

Propeller is loose,

damaged, or off‑balance

Refer to 

Maintenance

.

Wiring or electrical

connection faulty.

Refer to 

Warranty

Information

.

Difficulty removing

propeller

Bent propeller pin

Hold one blade and lightly tap

the opposite blade with a

rubber mallet.
Use a putty knife on both sides

of the propeller to apply equal

pressure.

Bent armature shaft

Refer to service center.

TROUBLESHOOTING

  

24

eng

Summary of Contents for 940300030

Page 1: ...Operation Maintenance Installation Warranty Manual 2017 Mercury Marine R5 70 R5 80 R5 105 8M0121078 1116 eng ...

Page 2: ...eng ...

Page 3: ...tic Compatibility EN 55012 2008 A1 2010 Vehicles boats and internal combustion engines Council Directive 98 96 EC Maritime Equipment Directive EN 60945 2002 C1 2008 Maritime navigation and radiocommunication equipment and systems Motor systems CISPR16 Conducted and Radiated Emissions EN61000 4 2 2008 ESD EN61000 4 3 2006 Radiated Immunity EN61000 4 4 2004 EFT EN61000 4 5 2005 Surges EN61000 4 6 20...

Page 4: ...lated information Please review this important information The description and specifications contained herein were in effect at the time this manual was approved for printing MotorGuide whose policy is one of continued improvement reserves the right to discontinue models at any time to change specifications designs methods or procedures without notice and without incurring obligation MotorGuide L...

Page 5: ... and Battery Information Wiring and Battery Information 7 Recommended Practice and Procedures 7 Battery Recommendations 7 Battery Precautions 8 Wire and Cable Routing 8 Battery Connection 9 Wire Color Code Abbreviations 13 Trolling Motor Installation and Operation Transom Mount Installation 14 Stowing and Deploying the Trolling Motor 14 Adjusting the Steering Tension 16 Adjusting the Trolling Moto...

Page 6: ...19 Lubricating the Pivot Points 20 Battery Inspection 20 Corrosion Control Anode Saltwater Models 20 Propeller Replacement 21 MotorGuide Accessories Inquiries 23 Troubleshooting Trolling Motor Performance 24 Owner Service Assistance Mercury Marine Service Offices 25 iv eng ...

Page 7: ...responsible for failure or damage caused by improper installation set up preparation or previous service or repair errors 4 Warranty coverage is available only to customers that purchase from a dealer authorized by MotorGuide Mercury Marine to distribute the product in the country in which the sale occurred Warranty coverage and duration varies by the country in which the product resides This warr...

Page 8: ...d Service Repair electric trolling motors are NOT warranted Service Repair motor denotes a trolling motor sold by MotorGuide that may be used but has been inspected and may have had minor repairs Original retail purchaser of a Service Repair motor is the first purchaser of the motor after it is denoted as Service Repair Service Repair motors have a blue sticker on the battery cable and box denotin...

Page 9: ...ercise extreme caution any time you are boating in an area where there might be people in the water WHILE THE BOAT IS STATIONARY WARNING A spinning propeller a moving boat or any solid device attached to the boat can cause serious injury or death to swimmers Stop the trolling motor immediately whenever anyone in the water is near your boat Shut off the trolling motor before allowing people to swim...

Page 10: ...ble by law to maintain a proper lookout by sight and hearing The operator must have an unobstructed view particularly to the front No passengers load or fishing seats should block the operators view when operating the boat Underwater hazards Reduce speed and proceed with caution whenever navigating in shallow water Tripping hazards To avoid a trip hazard route all cables and wiring neatly and out ...

Page 11: ...able speed control tiller handle b Top housing c Composite column d Depth adjustment collar e Steering tension adjustment knob f Clamp bracket g Propeller h Lower unit i Transom clamp screws j Battery cables k Tilt lock release lever l Serial number 62774 a b c d e f h i j k l g PRODUCT OVERVIEW eng 5 ...

Page 12: ...ital Extendable hand twist tiller Freshwater 24 V Variable 36 3 kgf 80 lbf 106 7 cm 42 in R5 105 FW Digital Extendable hand twist tiller Freshwater 36 V Variable 47 6 kgf 105 lbf 106 7 cm 42 in R5 80 SW Digital Extendable hand twist tiller Saltwater 24 V Variable 36 3 kgf 80 lbf 106 7 cm 42 in R5 105 SW Digital Extendable hand twist tiller Saltwater 36 V Variable 47 6 kgf 105 lbf 127 0 cm 50 in PR...

Page 13: ...minals Route the trolling motor wires on the opposite side of the boat from other boat wiring Connect boat accessories directly to the main engine battery Do not charge the trolling motor batteries while the trolling motor is in the deployed down position Battery Recommendations Use 12 volt deep cycle marine batteries The number of batteries required varies according to the model of your trolling ...

Page 14: ...attery if ventilation is poor This explosive gas may remain in or around the battery for several hours after it has been charged Sparks or flames can ignite this gas and cause an internal explosion which may shatter the battery The following precautions should be observed to prevent an explosion 1 Keep flames away and do not smoke near batteries being charged or which have been charged recently 2 ...

Page 15: ...ltage IMPORTANT Refer to the decal on the head of the trolling motor to determine the voltage requirements of your trolling motor 12 VOLT BATTERY CONNECTION 1 Starting with the negative lead disconnect the battery cables from the engine starting or accessory battery 2 Install a 50 amp good or 60 amp best manual reset circuit breaker in line with the trolling motor power cable positive lead and the...

Page 16: ...mp good or 60 amp best manual reset circuit breaker in line with the trolling motor power cable positive lead and the trolling motor battery B positive terminal 3 Connect the positive trolling motor lead to the positive terminal on trolling motor battery B 4 Connect a jumper wire reference gray between the negative terminal on battery B to the positive terminal on battery A IMPORTANT The jumper wi...

Page 17: ...rcuit breaker in line with the trolling motor power cable positive lead and the trolling motor battery C positive terminal 3 Connect the positive trolling motor lead to the positive terminal on trolling motor battery C 4 Connect a jumper wire reference gray between the negative terminal on battery C to the positive terminal on battery B IMPORTANT The jumper wire should be the same wire gauge as th...

Page 18: ...connect the battery cables to the engine starting or accessory battery 36 volt battery connection a Power cables to trolling motor b Manual reset circuit breaker c Jumper wire not supplied d Negative battery terminal RED BLK 37825 GRY c Battery B Battery C Battery A GRY c a b c d WIRING AND BATTERY INFORMATION 12 eng ...

Page 19: ...ons Wire Color Abbreviations BLK Black BLU Blue BRN Brown GRY Gray GRN Green ORN or ORG Orange PNK Pink PPL or PUR Purple RED Red TAN Tan WHT White YEL Yellow LT or LIT Light DK or DRK Dark WIRING AND BATTERY INFORMATION eng 13 ...

Page 20: ...ely by hand Do not overtighten the transom clamp screws IMPORTANT Overtightening the transom clamp screws can weaken or damage the mount bracket a Transom clamp screws b Mount bracket Stowing and Deploying the Trolling Motor WARNING Rotating propellers can cause serious injury or death Never start or operate the motor out of water a a b 62321 TROLLING MOTOR INSTALLATION AND OPERATION 14 eng ...

Page 21: ...own on the tilt lock release lever while simultaneously pulling on the trolling motor head column Do not exert downward force on the tiller handle to assist in tilting the trolling motor 62322 Tilt lock release lever 2 When the desired tilt position is achieved release the tilt lock release lever Verify that the latch pin is securely engaged a Tilt lock release lever b Latch pin 62323 a b TROLLING...

Page 22: ... pin lever a Tilt lock release lever b Latch pin 2 Adjust the angle of the motor to the desired position 3 Release the tilt lock release pin lever Verify that the latch pin is securely engaged Adjusting the Steering Tension 1 Turn the steering tension knob clockwise to increase steering tension 2 Turn the steering tension knob counterclockwise to decrease steering tension 62325 Steering tension kn...

Page 23: ...e turning the depth collar adjustment knob counterclockwise until the motor column slides freely To secure the column at the desired depth position turn the depth collar adjustment knob clockwise and tighten securely Adjust steering tension if necessary a Depth collar adjustment knob b Depth collar c Steering tension knob IMPORTANT When adjusting the motor depth ensure that the lower unit is subme...

Page 24: ...ocated on the head cover provides battery state of charge information at a glance The battery light will turn on when the trolling motor is connected to the battery and will remain on the entire time that the motor is connected to the battery Depending on the battery state of charge the light will either be green charged or red discharged b 45750 c a TROLLING MOTOR INSTALLATION AND OPERATION 18 en...

Page 25: ...ns Visually inspect for loose or corroded wiring connections Check the tightness of the propeller nut Check the propeller blades for damage AFTER EACH USE Disconnect the battery cables from the power source Check the propeller and the propeller shaft for debris such as weeds and fishing line Remove all debris Rinse the trolling motor with clean water to remove dirt and dust that may scratch the su...

Page 26: ...motor operation IMPORTANT Read the safety and maintenance instructions which accompany your battery 1 Ensure that the battery is secured to the vessel 2 Ensure that the battery cable terminals are clean tight and correctly installed For installation instructions refer to Battery Connection 3 Ensure that the battery is equipped with a battery box to prevent accidental shorting of the battery termin...

Page 27: ... battery before maintaining servicing installing or removing motor components REMOVING THE PROPELLER 1 Disconnect the power cables from the battery 2 While holding the propeller blade with one gloved hand use a 9 16 in wrench or a ratchet to remove the propeller nut Remove the propeller nut and washer or anode for saltwater models IMPORTANT Remove the propeller nut with a wrench or a ratchet and s...

Page 28: ...ler pin 2 Install the propeller onto the motor shaft by engaging the propeller onto the propeller pin 3 Install the washer and anode for saltwater models onto the propeller shaft then install the propeller nut Use a wrench or a socket and ratchet to tighten the propeller nut until it is snug then tighten the nut another 1 4 turn a 44664 MAINTENANCE 22 eng ...

Page 29: ... propeller pin may occur Saltwater model shown a Propeller b Anode saltwater models only c Washer d Propeller nut MotorGuide Accessories Inquiries Refer to www motorguide com for factory authorized accessories for all MotorGuide trolling motors a b c d 62099 MAINTENANCE eng 23 ...

Page 30: ...r to Maintenance Motor failure all speeds Weak battery Refer to Wiring and Battery Information Loose or corroded battery connections Electrical Check the connector for a loose or damaged connection Refer to Wiring and Battery Information Fuse on circuit breaker is open Replace the fuse or reset the circuit breaker only after determining the root cause of the problem Motor failure one or more speed...

Page 31: ...822 Brunswick Asia Pacific Group 41 71 Bessemer Drive Dandenong South Victoria 3175 Australia Fax 61 3 9706 7228 Europe Middle East Africa Telephone 32 87 32 32 11 Brunswick Marine Europe Parc Industriel de Petit Rechain B 4800 Verviers Belgium Fax 32 87 31 19 65 Mexico Central America South America Caribbean Telephone 1 954 744 3500 Mercury Marine 11650 Interchange Circle North Miramar FL 33025 U...

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