Yamaha F15CMHS v6 Owner's Manual
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Read this manual carefully before operating this outboard motor.
OWNERS MANUAL
F15 F20
LIT-18626-13-80 6AG-28199-3H-E0
6AG-9-3H-1E0.book 1
EMU25065
This product can expose you to chemicals including engine exhaust, which is known to the State of California to cause cancer, and carbon monoxide, which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
WARNING:
Ce produit peut vous exposer des produits chimiques y compris aux gaz dchappement, qui sont considrs par ltat de Californie comme tant cancrignes, et au monoxyde de carbone, qui est considr par ltat de Californie comme un facteur de malformations congnitales ou dautres troubles de la reproduction. Pour plus dinformations, rendez-vous sur www.P65Warnings.ca.gov.
ZMU08844
Read this manual carefully before operating this outboard motor. Keep this manual onboard in a waterproof bag when boating. This manual should stay with the outboard motor if it is sold.
6AG-9-3H-1E0.book 1
Important manual information EMU44141
To the owner Thank you for selecting a Yamaha outboard motor. This Owners Manual contains infor- mation needed for proper operation, mainte- nance and care. A thorough understanding of these simple instructions will help you ob- tain maximum enjoyment from your new Yamaha. If you have any question about the operation or maintenance of your outboard motor, please consult a Yamaha dealer. In this Owners Manual particularly important information is distinguished in the following ways.
: This is the safety alert symbol. It is used to alert you to potential personal injury hazards. Obey all safety messages that fol- low this symbol to avoid possible injury or death. EWM00782
A WARNING indicates a hazardous situa- tion which, if not avoided, could result in death or serious injury.
ECM00702
A NOTICE indicates special precautions that must be taken to avoid damage to the outboard motor or other property.
TIP: A TIP provides key information to make pro- cedures easier or clearer.
Yamaha continually seeks advancements in product design and quality. Therefore, while this manual contains the most current prod- uct information available at the time of print- ing, there may be minor discrepancies between your machine and this manual. If
there is any question concerning this manu- al, please consult your Yamaha dealer. To ensure long product life, Yamaha recom- mends that you use the product and perform the specified periodic inspections and main- tenance by correctly following the instruc- tions in the owners manual. Any damage resulting from neglect of these instructions is not covered by warranty. Some countries have laws or regulations re- stricting users from taking the product out of the country where it was purchased, and it may be impossible to register the product in the destination country. Additionally, the war- ranty may not apply in certain regions. When planning to take the product to another coun- try, consult the dealer where the product was purchased for further information. If you purchased this outboard motor used, see your Yamaha dealer to have it registered in your name in Yamaha records.
TIP: The F15EHA, F15MHA, F15PHA, F20EHA and the standard accessories are used as a base for the explanations and illustrations in this manual. Therefore some items may not apply to every model.
EMU44152
F15, F20 OWNERS MANUAL
2022 by Yamaha Motor Co., Ltd. 1st Edition, November 2021
All rights reserved. Any reprinting or unauthorized use without the written permission of
Yamaha Motor Co., Ltd. is expressly prohibited.
Printed in Japan
6AG-9-3H-1E0.book 1
Table of contents Safety information............................. 1
Outboard motor safety ..................... 1 Propeller .............................................. 1 Rotating parts ...................................... 1 Hot parts.............................................. 1 Electric shock ...................................... 1 Power tilt.............................................. 1 Engine shut-off cord (lanyard) ............. 1 Gasoline .............................................. 2 Gasoline exposure and spills .............. 2 Carbon monoxide ................................ 2 Modifications ....................................... 2
Boating safety .................................. 2 Alcohol and drugs................................ 2 Personal flotation devices (PFDs) ....... 2 People in the water.............................. 2 Passengers ......................................... 2 Overloading ......................................... 3 Avoid collisions.................................... 3 Collisions with floating or submerged
objects.............................................. 3 Weather............................................... 4 Accident reporting ............................... 4 Boat education and training................. 4 Passenger training .............................. 4 Boating safety publications.................. 5 Laws and regulations .......................... 5
Boating organizations.......................5 Basic boating rules (Rules of the
road)..............................................5 Steering and sailing rules and sound
signals.............................................. 6 Rules when encountering vessels....... 6 Other special situations ....................... 7
General information ........................ 10 Identification numbers record......... 10
Outboard motor serial number .......... 10 Compliance mark label................... 10 Read manuals and labels...............12
Warning labels .................................. 12
Specifications and requirements...15 Specifications ................................. 15
Installation requirements................ 16 Boat horsepower rating ..................... 16 Mounting outboard motor .................. 16
Battery requirements...................... 16 Specifications of Battery.................... 16 To install the battery .......................... 17
Propeller selection ......................... 17 Start-in-gear protection .................. 18 Engine oil requirements ................. 18 Fuel requirements .......................... 19
Gasoline ............................................ 19 Gasoline Additives............................. 20
Muddy or acidic water .................... 20 Anti-fouling paint ............................ 20 Outboard motor disposal
requirements............................... 21 Emergency equipment ................... 21 Emission control information ......... 21
Star labels ......................................... 22
Components .................................... 24 Components diagram..................... 24
Fuel tank............................................ 25 Fuel joint ............................................ 26 Fuel gauge ........................................ 26 Pressure relief tab ............................. 26 Fuel tank cap..................................... 26 Air vent screw.................................... 26 Tiller handle ...................................... 26 Gear shift lever ................................. 26 Throttle grip ...................................... 27 Throttle indicator ............................... 27 Throttle friction adjuster ..................... 27 Engine shut-off cord (lanyard) and
clip.................................................. 27 Engine stop button ........................... 28 Manual starter handle........................ 28 Starter button..................................... 28 Power tilt switch................................. 28 Steering friction adjuster.................... 29 Trim tab ............................................. 29 Trim rod (tilt pin) ................................ 30 Tilt lock mechanism........................... 30
6AG-9-3H-1E0.book 1
Table of contents Tilt support knob................................ 30 Tilt support bar .................................. 31 Power tilt unit..................................... 31 Cowling lock lever ............................. 31 Flushing device ................................. 32 Alert indicator ................................... 32
Instruments and indicators ............ 33 Indicators .......................................33
Low oil pressure-alert indicator ......... 33 Overheat-alert indicator..................... 33
Engine control system.................... 34 Alert system ................................... 34
Overheat alert.................................... 34 Low oil pressure alert ........................ 34
Installation .......................................35 Installation ...................................... 35
Mounting the outboard motor ............ 35 Clamping the outboard motor............ 37
Operation ......................................... 38 First-time operation ........................ 38
Fill engine oil ..................................... 38 Breaking in engine............................. 38 Getting to know your boat ................. 38
Checks before starting engine .......38 Fuel level ........................................... 39 Remove the top cowling .................... 39 Fuel system....................................... 39 Controls ............................................. 40 Engine shut-off cord (lanyard) ........... 40 Engine oil........................................... 40 Engine ............................................... 41 Flushing device ................................. 41 Install top cowling .............................. 41 Checking power tilt system................ 41 Battery ............................................... 42
Filling fuel .......................................42 Operating engine............................44
Sending fuel (portable tank) .............. 44 Starting engine .................................. 46
Checks after starting engine .......... 49 Cooling water .................................... 49
Warming up engine........................ 50 Manual start and electric start
models ........................................... 50 Checks after engine warm up ........ 50
Shifting .............................................. 50 Stop switches .................................... 50
Shifting ........................................... 50 Stopping boat................................. 51 Stopping engine............................. 52
Procedure.......................................... 52 Trimming outboard motor............... 52
Adjusting trim angle for manual tilt models ........................................... 53
Adjusting trim angle (power tilt models) .......................................... 54
Adjusting boat trim............................. 54 Tilting up and down........................ 55
Procedure for tilting up (manual tilt models) .......................................... 55
Procedure for tilting up (power tilt models) .......................................... 56
Procedure for tilting down (manual tilt models)...................................... 57
Procedure for tilting down (power tilt models) .......................................... 57
Shallow water ................................ 58 Cruising in shallow water (manual
tilt models)...................................... 58 Power tilt models ............................... 59
Cruising in other conditions............ 60
Maintenance .................................... 61 Transporting and storing outboard
motor........................................... 61 Dismounting the outboard motor ....... 61 Storing outboard motor...................... 62 Conditioning and stabilizing
gasoline.......................................... 63 Procedure.......................................... 63 Lubrication......................................... 64 Cleaning and anticorrosion
measures ....................................... 64
6AG-9-3H-1E0.book 2
Table of contents Flushing power unit ........................... 65 Cleaning the outboard motor............. 65 Checking painted surface of
outboard motor............................... 66 Periodic maintenance.....................66
Replacement parts ............................ 66 Maintenance interval guidelines ........ 67 Maintenance chart 1.......................... 68 Maintenance chart 2.......................... 70 Greasing............................................ 71 Cleaning and adjusting spark plug .... 71 Checking fuel filter............................. 72 Inspecting idle speed......................... 72 Changing engine oil........................... 73 Replacing the engine oil filter ............ 75 Why Yamalube .................................. 76 Inspecting wiring and connectors ...... 76 Checking propeller ............................ 76 Removing propeller ........................... 77 Installing propeller ............................. 77 Changing gear oil .............................. 78 Inspecting and replacing anode(s) .... 80 Checking battery (for electric start
models) .......................................... 80 Connecting the battery ...................... 81 Disconnecting the battery.................. 81
Trouble Recovery............................82 Troubleshooting ............................. 82 Temporary action in emergency.....85
Impact damage.................................. 85 Replacing fuse................................... 85 Power tilt will not operate .................. 86 Starter will not operate ...................... 86 Emergency starting engine (manual
starter model)................................. 87 Emergency starting engine (electric
start model) .................................... 88 Treatment of submerged motor...... 90
Consumer information ................... 91 YAMAHA FOUR-STROKE
OUTBOARD MOTOR THREE-YEAR LIMITED WARRANTY ............................... 91
IMPORTANT WARRANTY INFORMATION IF YOU USE YOUR YAMAHA OUTSIDE THE U.S.A. OR CANADA ................... 93
INDEX............................................... 94
6AG-9-3H-1E0.book 3
1
Safety information EMU33623
Outboard motor safety Observe these precautions at all times.
EMU36502
Propeller People can be injured or killed if they come in contact with the propeller. The propeller can keep moving even when the motor is in neutral, and sharp edges of the propeller can cut even when stationary. Stop the engine when a person is in the
water near you. Keep people out of reach of the propeller,
even when the engine is off.
EMU40272
Rotating parts Hands, feet, hair, jewelry, clothing, personal flotation device (PFD) straps, etc., can be- come entangled with internal rotating parts of the engine, resulting in serious injury or death. Keep the top cowling in place whenever pos- sible. Do not remove or replace the top cowl- ing with the engine running. Only operate the engine with the top cowling removed according to the specific instruc- tions in the manual. Keep hands, feet, hair, jewelry, clothing, PFD straps, etc., away from any exposed moving parts.
EMU33641
Hot parts During and after operation, engine parts are hot enough to cause burns. Avoid touching any parts under the top cowling until the en- gine has cooled.
EMU33651
Electric shock Do not touch any electrical parts while start- ing or operating the engine. They can cause
shock or electrocution.
EMU34791
Power tilt Body parts can be crushed between the mo- tor and the clamp bracket when the motor is trimmed or tilted. Keep body parts out of this area at all times. Be sure no one is in this area before operating the power tilt mecha- nism. The power tilt switches operate even when the main switch is off. Keep people be away from the switches whenever working around the motor. Never get under the lower unit while it is tilt- ed, even when the tilt support lever or knob is locked. Severe injury could occur if the outboard motor accidentally falls.
EMU33672
Engine shut-off cord (lanyard) Attach the engine shut-off cord so that the engine stops if the operator falls overboard or leaves the helm. This prevents the boat from running away under power and leaving people stranded, or running over people or objects. Always attach the engine shut-off cord to a secure place on your clothing or your arm or leg while operating. Do not remove it to leave the helm while the boat is moving. Do not at- tach the cord to clothing that could tear loose, or route the cord where it could be- come entangled, preventing it from function- ing. Do not route the cord where it is likely to be accidentally pulled out. If the cord is pulled during operation, the engine will shut off and you will lose most steering control. The boat could slow rapidly, throwing people and ob- jects forward.
6AG-9-3H-1E0.book 1
Safety information
2
EMU33811
Gasoline Gasoline and its vapors are highly flam- mable and explosive. Always, refuel ac- cording to the procedure on page 44 to reduce the risk of fire and explosion.
EMU33821
Gasoline exposure and spills Take care not to spill gasoline. If gasoline spills, wipe it up immediately with dry rags. Dispose of rags properly. If any gasoline spills onto your skin, immedi- ately wash with soap and water. Change clothing if gasoline spills on it. If you swallow gasoline, inhale a lot of gaso- line vapor, or get gasoline in your eyes, get immediate medical attention. Never siphon fuel by mouth.
EMU33901
Carbon monoxide This product emits exhaust gases which con- tain carbon monoxide, a colorless, odorless gas which may cause brain damage or death when inhaled. Symptoms include nausea, dizziness, and drowsiness. Keep cockpit and cabin areas well ventilated. Avoid blocking exhaust outlets.
EMU33781
Modifications Do not attempt to modify this outboard mo- tor. Modifications to your outboard motor may reduce safety and reliability, and render the outboard unsafe or illegal to use.
EMU33742
Boating safety This section includes a few of the many im- portant safety precautions that you should follow when boating.
EMU33711
Alcohol and drugs Never operate after drinking alcohol or taking drugs. Intoxication is one of the most com- mon factors contributing to boating fatalities.
EMU40281
Personal flotation devices (PFDs) Have an approved PFD on board for every occupant. Yamaha recommends that you must wear a PFD whenever boating. At a minimum, children and non-swimmers should always wear PFDs, and everyone should wear PFDs when there are potentially hazardous boating conditions.
EMU33732
People in the water Always watch carefully for people in the wa- ter, such as swimmers, skiers, or divers, whenever the engine is running. When someone is in the water near the boat, shift into neutral and stop the engine. Stay away from swimming areas. Swimmers can be hard to see. The propeller can keep moving even when the motor is in neutral. Stop the engine when a person is in the water near you.
EMU33752
Passengers Consult your boat manufacturers instruc- tions for details about appropriate passenger locations in your boat and be sure all pas- sengers are positioned properly before ac- celerating and when operating above an idle speed. Standing or sitting in non-designated locations may result in being thrown either overboard or within the boat due to waves, wakes, or sudden changes in speed or direc- tion. Even when people are positioned prop- erly, alert your passengers if you must make
6AG-9-3H-1E0.book 2
Safety information
3
any unusual maneuver. Always avoid jump- ing waves or wakes.
EMU33763
Overloading Do not overload the boat. Consult the boat capacity plate or boat manufacturer for max- imum weight and number of passengers. Be sure that weight is properly distributed ac- cording to the boat manufacturers instruc- tions. Overloading or incorrect weight distribution can compromise the boats han- dling and lead to an accident, capsizing or swamping.
EMU33773
Avoid collisions Scan constantly for people, objects, and oth- er boats. Be alert for conditions that limit your visibility or block your vision of others.
Operate defensively at safe speeds and keep a safe distance away from people, ob- jects, and other boats. Do not follow directly behind other boats or
waterskiers. Avoid sharp turns or other maneuvers that
make it hard for others to avoid you or un- derstand where you are going.
Avoid areas with submerged objects or shallow water.
Ride within your limits and avoid aggres- sive maneuvers to reduce the risk of loss
of control, ejection, and collision. Take early action to avoid collisions. Re-
member, boats do not have brakes, and stopping the engine or reducing throttle can reduce the ability to steer. If you are not sure that you can stop in time before hitting an obstacle, apply throttle and turn in another direction.
EMU48100
Collisions with floating or submerged objects If the outboard motor hits a floating object or an obstacle in the water while cruising, the following could occur: The passengers and any loose equipment
or luggage could be thrown forward due to the sudden deceleration.
Parts of the outboard motor could come loose as a result of the impact and could be thrown into the boat.
The boat or outboard motor could be dam- aged as a result of the impact.
When you operate the boat in an area where there might be floating objects or obstacles in the water, be sure to adjust the trim angle of the outboard motor, slow down, and oper- ate carefully. For further information, see page 58. If the outboard motor hits a floating object or an obstacle in the water, make sure that there are no abnormalities with the boat and the outboard motor. If anything abnormal is found, return to the nearest harbor at low speed and have a Yamaha dealer inspect the outboard motor.
ZMU06025
6AG-9-3H-1E0.book 3
Safety information
4
EMU33791
Weather Stay informed about the weather. Check weather forecasts before boating. Avoid boating in hazardous weather.
EMU44161
Accident reporting Boat operators are required by law to file a Boating Accident Report with their boating law enforcement agency if their boat is in- volved in any of the following accidents: (1) There is loss of life or probable loss of
life. (2) There is personal injury that requires
medical attention beyond first aid. (3) There is property damage to boats or
other property over a certain amount. (4) There is complete loss of a boat. Contact local law enforcement personnel if a report is necessary.
EMU44173
Boat education and training For U.S.A. Operators should take a boating safety course. This may be required in your state.
Many of the organizations listed in the next section can provide information about cours- es in your area. You may also want to consider an Internet- based program for basic boater education. The Online Boating Safety Course provided by the Boat U.S. Foundation, is approved by the National Association of State Boating Law Administrators (NASBLA) and recog- nized by the United States Coast Guard. Most, but not all, states accept this course to meet their minimum requirements. While it cannot replace an in-depth course such as one offered by the U.S. Coast Guard, U.S. Power Squadron, or other organization, this online course does provide a general over- view of the basics in boating safety, require- ments, navigation, and operation. Upon successful completion of the course, the user can download a certificate of comple- tion immediately or, for a small charge, re- quest one by mail. To take this free course, go to boatus.org. For Canada All operators of pleasure craft must illustrate competency by means of a Pleasure Craft Operators Card with the exception of Per- sonal Water Craft used for rental purposes which require a rental checklist be complet- ed. Pleasure Craft Operators Cards can be obtained following the completion of a com- petency course, with an online option. De- tails can be found on Transport Canadas website. www.tc.gc.ca
EMU33881
Passenger training Make sure at least one other passenger is trained to operate the boat in the event of an emergency.
6AG-9-3H-1E0.book 4
Safety information
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EMU33891
Boating safety publications Be informed about boating safety. Additional publications and information can be obtained from many boating organizations.
EMU33592
Laws and regulations Know the marine laws and regulations where you will be boatingand obey them. Several sets of rules prevail according to geographic location, but all are basically the same as the International Rules of the Road. The rules presented in the following section are con- densedand have been provided for your convenience only. Contact the U.S. Coast Guard, the National Association of State Boating Law Adminis- trators, or your local Power Squadron for a complete set of rules governing the waters in which you will be using your boat.
EMU44183
Boating organizations The following organizations provide boating safety training and information about boating safety and laws.
In the U.S.A. United States Coast Guard Consumer Affairs Staff (G-BC) Office of Boating, Public, and Consumer Af- fairs U.S. Coast Guard Headquarters Washington, D.C. 20593-0001 https://www.uscgboating.org/
United States Power Squadrons 1-888-FOR-USPS (1-888-367-8777) https://www.usps.org/
Boat Owners Association of The United States 1-800-336-BOAT (1-800-336-2628) https://www.boatus.com/
National Association of State Boating Law Administrators (NASBLA) 1500 Leestown Road, Suite 330 Lexington, KY 40511 859-225-9497 https://www.nasbla.org/
National Marine Manufacturers Associa- tion (NMMA) 200 East Randolph Drive Suite 5100 Chicago, IL 60601 https://www.nmma.org/
Marine Retailers Association of America 155 N. Michigan Ave. Chicago, IL 60304 https://www.mraa.com/
In Canada National Marine Manufacturers Associa- tion Canada 14 McEwan Drive Suite 8 Bolton, ON L7E 1H1 https://www.nmma.ca/
EMU33692
Basic boating rules (Rules of the road)
Just as there are rules that apply when you are driving on streets and highways, there are waterway rules that apply when you are driving your boat. These rules are used inter- nationally. (For U.S.A.: and are also en-
6AG-9-3H-1E0.book 5
Safety information
6
forced by the United States Coast Guard and local agencies.) You should be aware of these rules, and follow them whenever you encounter another vessel on the water.
EMU33702
Steering and sailing rules and sound signals Whenever two vessels on the water meet one another, one vessel has the right-of- way; it is called the stand-on vessel. The vessel that does not have the right-of-way is called the give-way or burdened vessel. These rules determine which vessel has the right-of-way, and what each vessel should do.
Stand-on vessel The vessel with the right-of-way has the duty to continue its course and speed, except to avoid an immediate collision. When you maintain your direction and speed, the other vessel will be able to determine how best to avoid you.
Give-way vessel The vessel that does not have the right-of- way has the duty to take positive and timely action to stay out of the way of the Stand-On vessel. Normally, you should not cross in front of the vessel with the right-of-way. You should slow down or change directions brief- ly and pass behind the other vessel. You should always move in such a way that the operator of the other vessel can see what you are doing. The general prudential rule This rule is called Rule 2 in the International Rules and says, In obeying and construing these rules due regard shall be had to all dangers of naviga- tion and collision, and to any special circum-
stances, which may render a departure from the above rules necessary in order to avoid immediate danger. In other words, follow the standard rules ex- cept when a collision will occur unless both vessels try to avoid each other. If that is the case, both vessels become Give-Way ves- sels.
EMU25524
Rules when encountering vessels There are three main situations that you may encounter with other vessels which could lead to a collision unless the Steering Rules are followed: Meeting: (you are approaching another ves- sel head-on) Crossing: (you are traveling across the oth- er vessels path) Overtaking: (you are passing or being passed by another vessel) In the following illustration, your boat is in the center. You should give the right-of-way to any vessels shown in white area (you are the Give-Way vessel). Any vessels in the shad- ed area must yield to you (they are the Give- Way vessels). Both you and the meeting vessel must alter course to avoid each other.
Meeting If you are meeting another power vessel head-on, and are close enough to run the
6AG-9-3H-1E0.book 6
Safety information
7
risk of collision, neither of you has the right- of-way. Both of you should alter course to avoid an accident. You should keep the other vessel on your port (left) side. This rule doesnt apply if both of you will clear one an- other if you continue on your set course and speed.
Crossing When two power driven vessels are crossing each others path close enough to run the risk of collision, the vessel which has the oth- er on the starboard (right) side must keep out of the way of the other. If the other vessel is on your right, you must keep out of its way; you are the Give-Way vessel. If the other vessel is on your port (left) side, remember that you should maintain course and direc- tion, provided the other vessel gives you the right-of-way as it should.
Overtaking If you are passing another vessel, you are
the Give-Way vessel. This means that the other vessel is expected to maintain its course and speed. You must stay out of its way until you are clear of it. Likewise, if an- other vessel is passing you, you should maintain your speed and direction so that the other vessel can steer itself around you.
EMU25532
Other special situations There are three other rules you should be aware of when driving your boat around oth- er vessels. Narrow channels and bends When navigating in narrow channels, you should keep to the right when it is safe and practical to do so. If the operator of a power- driven vessel is preparing to go around a bend that may obstruct the view of other wa- ter vessels, the operator should sound a pro- longed blast on the whistle (4 to 6 seconds). If another vessel is around the bend, it too should sound the whistle. Even if no reply is heard, however, the vessel should still pro- ceed around the bend with caution. If you navigate such waters with your boat, you will need to carry a portable air horn, available from local marine supply stores. Fishing vessel right-of-way All vessels that are fishing with nets, lines or trawls are considered to be fishing vessels under the International Rules. Vessels with trolling lines are not considered fishing ves- sels. Fishing vessels have the right-of-way regardless of position. Fishing vessels can- not, however, impede the passage of other vessels in narrow channels. Sailing vessel right-of-way Sailing vessels should normally be given the right-of-way. The exceptions to this are: (1) When the sailing vessel is overtaking the
power-driven vessel, the power-driven
6AG-9-3H-1E0.book 7
Safety information
8
vessel has the right-of-way. (2) Sailing vessels should keep clear of any
fishing vessel. (3) In a narrow channel, a sailing vessel
should not hamper the safe passage of a power-driven vessel that can navigate only in such a channel.
Reading buoys and other markers The waters of the United States are marked for safe navigation by the lateral system of buoyage. Simply put, buoys and markers have an arrangement of shapes, colors, numbers and lights to show which side of the buoy a boater should pass on when navigat- ing in a particular direction. The markings on these buoys are oriented from the perspec- tive of being entered from seaward (the boat- er is going towards the port). This means that red buoys are passed on the starboard (right) side when proceeding from open wa- ter into port, and black buoys are to port (left) side. When navigating out of port, your posi- tion with respect to the buoys should be re- versed; red buoys should be to port and black buoys to starboard. Many bodies of water used by boaters are entirely within the boundaries of a particular state. The Uniform State Waterway Marking System has been devised for these waters. This system uses buoys and signs with dis- tinctive shapes and colors to show regulatory or advisory information. These markers are white with black letters and orange boarders. They signify speed zones, restricted areas, danger areas, and general information. Remember, markings may vary by geo- graphic location. Always consult local boat- ing authorities before driving your boat in unfamiliar waters.
6AG-9-3H-1E0.book 8
Safety information
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ZMU01708
6AG-9-3H-1E0.book 9
10
General information EMU25172
Identification numbers record
EMU25186
Outboard motor serial number The outboard motor serial number is stamped on the label attached to the port side of the clamp bracket. Record your outboard motor serial number in the spaces provided to assist you in ordering spare parts from your Yamaha dealer or for reference in case your outboard motor is sto- len.
EMU46133
Compliance mark label Engines affixed with this label conform to the regulations for each country. This label is affixed to the clamp bracket or swivel bracket.
Regulatory Compliance Mark (RCM) Engines affixed with this mark conform to certain portion(s) of the Australian Radio Communications Act.
1. Outboard motor serial number location
1. Outboard motor serial number location
ZMU05335
1
ZMU05336
1
1. Serial number 2. Model name 3. Motor transom height 4. Engine code
1. Compliance mark label location
34 12
ZMU01692
ZMU055901
6AG-9-3H-1E0.book 10
General information
11
ICES-002 Compliance Label Engines affixed with this mark meet all re- quirements of the Canadian Interference Causing Equipment Regulations.
1. Regulatory Compliance Mark (RCM)
1. ICES-002 Compliance Label
ZMU08190 1
ZMU08191
1
6AG-9-3H-1E0.book 11
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12
EMU33524
Read manuals and labels Before operating or working on this outboard motor: Read this manual. Read any manuals supplied with the boat. Read all labels on the outboard motor and the boat. If you need any additional information, contact your Yamaha dealer.
EMU33836
Warning labels If these labels are damaged or missing, contact your Yamaha dealer for replacements.
1 2
3
6AG-9-3H-1E0.book 12
General information
13
EMU33913
Contents of labels The above warning labels mean as follows. 1 EWM01692
Emergency starting does not have start- in-gear protection. Ensure shift control is in neutral before starting engine.
2 EWM01682
Keep hands, hair, and clothing away from rotating parts while the engine is running.
Do not touch or remove electrical parts when starting or during operation.
3 EWM01672
Read Owners Manuals and labels. Wear an approved personal flotation
device (PFD). Attach engine shut-off cord (lanyard) to
your PFD, arm, or leg so the engine stops if you accidentally leave the helm, which could prevent a runaway boat.
6EE-G2794-40
6EE-H1994-406EE-H1995-40
1 2
3
6EE-G2794-50
6EE-H1994-50 6EE-H1995-50
ZMU05740
6AG-9-3H-1E0.book 13
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EMU35133
Symbols The following symbols mean as follows.
Notice/Warning
Read Owners Manual
Hazard caused by continuous rotation
Electrical hazard
ZMU05696
ZMU05664
ZMU05665
ZMU05666
6AG-9-3H-1E0.book 14
15
Specifications and requirements EMU38092
Specifications TIP: (AL) stated in the specification data below represents the numerical value for the alumi- num propeller installed.
EMU48360
Dimension and weight: Overall length:
1048 mm (41.3 in) Overall width:
420 mm (16.5 in) Overall height S:
1078 mm (42.4 in) Overall height L:
1205 mm (47.4 in) Motor transom height S:
438 mm (17.2 in) Motor transom height L:
565 mm (22.2 in) (F15EHA, F15MHA, F20EHA) 570 mm (22.4 in) (F15PHA)
Dry weight (AL) S: 51 kg (112 lb) (F15MHA) 54 kg (119 lb) (F15EHA)
Dry weight (AL) L: 53 kg (117 lb) (F15MHA) 56 kg (123 lb) (F15EHA, F20EHA) 61 kg (134 lb) (F15PHA)
Performance: Full throttle operating range:
50006000 r/min Rated power:
11.0 kW (15 HP) (F15EHA, F15MHA, F15PHA) 14.7 kW (20 HP) (F20EHA)
Idle speed (in neutral): 10001100 r/min
Power unit: Type:
4-stroke SOHC L2 4 valves Total displacement:
362 cm3 (22.1 c.i.) Bore stroke:
63.0 58.1 mm (2.48 2.29 in) Ignition system:
CDI Spark plug (NGK):
DPR6EB-9 Spark plug gap:
0.80.9 mm (0.0310.035 in) Steering system:
Tiller handle Starting system:
Electric starter (F15EHA, F15PHA, F20EHA) Manual starter (F15MHA)
Starting carburetion system: Prime start
Valve clearance IN (cold engine): 0.150.25 mm (0.00590.0098 in)
Valve clearance EX (cold engine): 0.250.35 mm (0.00980.0138 in)
Battery rating (CCA/SAE): 245433 A (F15EHA, F15PHA, F20EHA)
Battery rating (MCA/ABYC): 323520 A (F15EHA, F15PHA, F20EHA)
Battery rating (RC/SAE): 52 minutes (F15EHA, F15PHA, F20EHA)
Maximum generator output: 10 A (F15EHA, F15PHA, F20EHA)
Lower unit: Gear shift positions:
Forward-neutral-reverse Gear ratio:
2.08 (27/13)
6AG-9-3H-1E0.book 15
Specifications and requirements
16
Trim and tilt system: Manual tilt (F15EHA, F15MHA, F20EHA) Power tilt (F15PHA)
Propeller mark: J/J1 (F15EHA, F15MHA, F15PHA) J1 (F20EHA)
Fuel and oil: Recommended fuel:
Regular unleaded gasoline Min. pump octane number (PON):
86 Fuel tank capacity:
25 L (6.61 US gal, 5.50 Imp.gal) Recommended engine oil:
YAMALUBE 4M FC-W or 4-stroke outboard motor oil
Recommended engine oil grade 1: SAE 10W-30/10W-40/5W-30 API SE/SF/SG/SH/SJ/SL
Engine oil quantity (without oil filter re- placement):
1.6 L (1.69 US qt, 1.41 Imp.qt) Engine oil quantity (with oil filter replace- ment):
1.8 L (1.90 US qt, 1.58 Imp.qt) Lubrication system:
Wet sump Recommended gear oil:
Yamalube Marine Gearcase Lube or Hypoid gear oil
Recommended gear oil grade: SAE 90 API GL-4
Gear oil quantity: 0.250 L (0.264 US qt, 0.220 Imp.qt)
EMU33556
Installation requirements
EMU33566
Boat horsepower rating EWM01561
Overpowering a boat can cause severe instability.
Before installing the outboard motor(s), con- firm that the total horsepower of your out- board motor(s) does not exceed the boats maximum horsepower rating. See the boats capacity plate or contact the manufacturer.
EMU40491
Mounting outboard motor EWM02501
Improper mounting of the outboard mo- tor could result in hazardous condi- tions such as poor handling, loss of control, or fire hazards.
Because the outboard motor is very heavy, special equipment and training is required to mount it safely.
Your dealer or other person experienced in proper rigging should mount the outboard motor using correct equipment and complete rigging instructions. For further information, see page 35.
EMU25695
Battery requirements
EMU25717
Specifications of Battery Use a fully charged battery that meets the following specifications. The engine cannot be started if battery voltage is too low.
6AG-9-3H-1E0.book 16
Specifications and requirements
17
ECM01064
Do not use a battery that does not meet the specified capacity. If a battery that does not meet specifications is used, the electric system could perform poor- ly or be overloaded, causing electric system damage.
Do not use a battery which exceeds the maximum CCA rating. If the batteries are used in parallel circuit, use new bat- teries of the same type and make sure that the total battery rating never ex- ceeds the maximum CCA rating.
EMU36293
Mounting battery Mount the battery holder securely in a dry, well-ventilated, vibration-free location in the boat. WARNING! Do not put flammable items, or loose heavy or metal objects in the same compartment as the battery. Fire, explosion or sparks could result. [EWM01821]
Battery cable The battery cable size and length are critical. Consult your Yamaha dealer about the bat- tery cable size and length.
EMU44771
To install the battery ECM01091
A battery cannot be connected to models that do not have a rectifier or Rectifier Regulator.
If you wish to use a battery, your outboard motor must be equipped with the following parts. Rectifier or Rectifier Regulator Lighting coil If you do not know if your outboard motor is equipped with these parts, consult your Yamaha dealer. Install an optional Rectifier Regulator or use accessories rated to withstand 18 volts or higher with the above models. Consult your Yamaha dealer for details on installing an optional Rectifier Regulator.
EMU34196
Propeller selection Next to selecting an outboard motor, select- ing the right propeller is one of the most im- portant purchasing decisions a boater can make. The type, size, and design of your pro- peller have a direct impact on acceleration, top speed, fuel economy, and even engine life. Yamaha designs and manufactures pro- pellers for every Yamaha outboard motor and every application. Your outboard motor came with a Yamaha propeller selected to perform well over a range of applications, but there may be uses where a different propeller would be more appropriate. Your Yamaha dealer can help you select the right propeller for your boating needs. Select a propeller that will allow the engine to reach the middle or upper half of the operating
Battery rating (CCA/SAE): 245433 A (F15EHA, F15PHA, F20EHA)
Battery rating (MCA/ABYC): 323520 A (F15EHA, F15PHA, F20EHA)
Battery rating (RC/SAE): 52 minutes (F15EHA, F15PHA, F20EHA)
6AG-9-3H-1E0.book 17
Specifications and requirements
18
range at full throttle with the maximum boat- load. Generally, select a larger pitch propel- ler for a smaller operating load and a smaller pitch propeller for a heavier load. If you carry loads that vary widely, select the propeller that lets the engine run in the proper range for your maximum load but remember that you may need to reduce your throttle setting to stay within the recommended engine speed range when carrying lighter loads. To check the propeller, see page 76.
EMU25771
Start-in-gear