Yamaha F25SMHA Y12 v15 Owner's Manual
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Read this manual carefully before operating this outboard motor.
OWNERS MANUAL
F25 T25
LIT-18626-09-54 6BP-28199-35-E0
6BP-9-35-1E0.book 1
EMU25063
ZMU07696
Les gaz dchappement du moteur de ce produit contiennent des substances chimiques connues dans ltat de Californie pour provoquer le cancer, des anomalies congnitales et des troubles de la reproduction.
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.
6BP-9-35-1E0.book 1
Important manual information EMU44140
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.
WARNING EWM00781
A WARNING indicates a hazardous situa- tion which, if not avoided, could result in death or serious injury.
NOTICE ECM00701
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 F25A, F25EA, F25EHA, F25EHB, F25MHA, F25MHB, T25A and the standard accessories are used as a base for the ex- planations and illustrations in this manual. Therefore some items may not apply to ev- ery model. EMU44150
F25, T25 OWNERS MANUAL
2011 by Yamaha Motor Co., Ltd. 1st Edition, December 2011
All rights reserved. Any reprinting or unauthorized use without the written permission of
Yamaha Motor Co., Ltd. is expressly prohibited.
Printed in Japan
6BP-9-35-1E0.book 1
Table of contents Safety information............................. 1
Outboard motor safety ..................... 1 Propeller............................................ 1 Rotating parts.................................... 1 Hot parts ........................................... 1 Electric shock.................................... 1 Power trim and tilt ............................. 1 Engine shut-off cord (lanyard)........... 1 Gasoline............................................ 1 Gasoline exposure and spills ............ 2 Carbon monoxide.............................. 2 Modifications ..................................... 2
Boating safety .................................. 2 Alcohol and drugs ............................. 2 Personal flotation devices ................. 2 People in the water ........................... 2 Passengers ....................................... 2 Overloading....................................... 2 Avoid collisions ................................. 3 Weather ............................................ 3 Accident reporting ............................. 3 Boat education and training .............. 3 Passenger training ............................ 4 Boating safety publications ............... 4 Laws and regulations ........................ 4
Boating organizations....................... 4 Basic boating rules (Rules of the
road)............................................... 5 Steering and sailing rules and
sound signals.................................. 5 Rules when encountering
vessels............................................ 5 Other special situations..................... 6
General information .......................... 9 Identification numbers record........... 9
Outboard motor serial number .......... 9 Key number....................................... 9
Read manuals and labels............... 10 Warning labels ............................... 10
Specifications and requirements.................................... 14
Specifications ................................. 14 Installation requirements ................ 16
Boat horsepower rating................... 16 Mounting motor ............................... 16
Remote control requirements......... 16 Battery requirements...................... 17
Specifications of Battery.................. 17 Mounting battery ............................. 17 Multiple batteries ............................. 17 Without a rectifier or Rectifier
Regulator ...................................... 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 .................... 21 Anti-fouling paint ............................ 21 Motor disposal requirements.......... 21 Emergency equipment ................... 21 Emission control information ......... 22
North American models................... 22 Star labels ....................................... 23
Components .................................... 25 Components diagram..................... 25
Fuel tank ......................................... 27 Fuel joint.......................................... 28 Fuel gauge ...................................... 28 Pressure relief tab ........................... 28 Fuel tank cap................................... 28 Air vent screw.................................. 28 Remote control box ......................... 28 Remote control lever ....................... 28 Neutral interlock trigger ................... 29 Neutral throttle lever........................ 29 Tiller handle .................................... 29 Gear shift lever ............................... 30 Throttle grip .................................... 30 Throttle indicator ............................ 30 Throttle friction adjuster................... 31 Engine shut-off cord (lanyard)
and clip.......................................... 31 Engine stop button ......................... 32 Manual starter handle ..................... 33 Starter button .................................. 33 Main switch ..................................... 33 Steering friction adjuster ................. 34
6BP-9-35-1E0.book 1
Table of contents Power trim and tilt switch on
remote control or tiller handle ....... 34 Power trim and tilt switch on
bottom cowling.............................. 35 Trim tab with anode ........................ 35 Trim tab........................................... 36 Trim rod (tilt pin) .............................. 36 Tilt lock mechanism ........................ 36 Tilt support knob ............................. 37 Tilt support bar ................................ 37 Cowling lock lever(s) (turn type)...... 38 Flushing device ............................... 38 Alert indicator ................................. 38
Instruments and indicators ............ 39 Indicators ....................................... 39
Low oil pressure-alert indicator ....... 39 Overheat-alert indicator .................. 39
Analog trim meter........................... 39 Engine control system.................... 40
Alert system ................................... 40 Overheat alert ................................. 40 Low oil pressure alert ...................... 40
Installation ....................................... 42 Installation ...................................... 42
Mounting the outboard motor .......... 42 Clamping the outboard motor ......... 43
Operation ......................................... 45 First-time operation ........................ 45
Fill engine oil ................................... 45 Breaking in engine .......................... 45 Getting to know your boat ............... 45
Checks before starting engine ....... 45 Fuel level......................................... 45 Remove the top cowling.................. 46 Fuel system..................................... 46 Controls........................................... 46 Engine shut-off cord (lanyard)......... 47 Engine oil ........................................ 48 Engine............................................. 48 Flushing device ............................... 48 Install top cowling............................ 48 Checking power trim and tilt
system .......................................... 49 Battery............................................. 49
Filling fuel....................................... 50 Operating engine ........................... 52
Sending fuel (portable tank) ............ 52 Starting engine ................................ 54
Checks after starting engine .......... 60 Cooling water .................................. 60
Warming up engine........................ 60 Manual start and electric start
models .......................................... 60 Checks after engine warm up ........ 61
Shifting ............................................ 61 Stop switches .................................. 61
Shifting ........................................... 61 Stopping boat................................. 63 Stopping engine............................. 63
Procedure........................................ 63 Trimming outboard motor............... 65
Adjusting trim angle for manual tilt models...................................... 65
Adjusting trim angle (Power trim and tilt) .......................................... 66
Adjusting trim angle for hydro tilt models .......................................... 67
Adjusting boat trim .......................... 67 Tilting up and down........................ 68
Procedure for tilting up (manual tilt models)..................................... 69
Procedure for tilting up (hydro tilt models)..................................... 70
Procedure for tilting up (power trim and tilt models)....................... 70
Procedure for tilting down (manual tilt models)....................... 72
Procedure for tilting down (hydro tilt models)..................................... 72
Procedure for tilting down (power trim and tilt models)....................... 73
Shallow water ................................ 73 Cruising in shallow water
(manual tilt models)....................... 73 Hydro tilt models ............................. 75 Power trim and tilt models............... 76
Cruising in other conditions............ 77
6BP-9-35-1E0.book 2
Table of contents Maintenance..................................... 78
Transporting and storing outboard motor............................. 78
Clamp screw mounting models ....... 78 Storing outboard motor ................... 79 Procedure ....................................... 79 Lubrication ...................................... 80 Cleaning and anticorrosion
measures ...................................... 80 Flushing power unit ......................... 81 Cleaning the outboard motor ......... 81 Checking painted surface of
outboard motor ............................. 82 Periodic maintenance..................... 82
Replacement parts .......................... 82 Maintenance interval guidelines...... 82 Maintenance chart 1 ....................... 84 Maintenance chart 2 ....................... 86 Greasing ......................................... 87 Cleaning and adjusting
spark plug ..................................... 89 Checking fuel filter .......................... 90 Inspecting idle speed ...................... 90 Changing engine oil ........................ 91 Inspecting wiring and
connectors .................................... 93 Checking propeller .......................... 93 Removing propeller ......................... 93 Installing propeller ........................... 94 Changing gear oil ............................ 95 Inspecting and replacing
anode(s)........................................ 96 Checking battery (for electric
start models) ................................. 97 Connecting the battery .................... 98 Disconnecting the battery ............... 98
Trouble Recovery............................ 99 Troubleshooting ............................. 99 Temporary action in
emergency .................................102 Impact damage ............................. 102 Replacing fuse .............................. 102 Power trim and tilt will not
operate........................................ 103 Starter will not operate .................. 103
Emergency starting engine (manual start model) ................... 104
Emergency starting engine (electric start model) ................... 106
Treatment of submerged motor.......................................... 107
Consumer information (For U.S.A.) .................................... 108
YAMAHA MOTOR CORPORATION, U.S.A. FOUR-STROKE OUTBOARD MOTOR THREE-YEAR LIMITED WARRANTY .............................. 108
IMPORTANT WARRANTY INFORMATION IF YOU USE YOUR YAMAHA OUTSIDE THE USA OR CANADA............. 110
6BP-9-35-1E0.book 3
1
Safety information EMU33622
Outboard motor safety Observe these precautions at all times. EMU36501
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. EMU33630
Rotating parts Hands, feet, hair, jewelry, clothing, PFD straps, etc. can become entangled with inter- nal 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 cowling with the engine running. Only operate the engine with the cowling re- moved according to the specific instructions in the manual. Keep hands, feet, hair, jewel- ry, clothing, PFD straps, etc. away from any exposed moving parts. EMU33640
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. EMU33650
Electric shock Do not touch any electrical parts while start- ing or operating the engine. They can cause shock or electrocution. EMU33660
Power trim and 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 trim and tilt mechanism. The power trim and tilt switches operate even when the main switch is off. Keep peo- ple 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 is locked. Severe injury could occur if the outboard mo- tor accidentally falls. EMU33671
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. EMU33810
Gasoline Gasoline and its vapors are highly flam- mable and explosive. Always, refuel ac- cording to the procedure on page 52 to reduce the risk of fire and explosion.
6BP-9-35-1E0.book 1
Safety information
2
EMU33820
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. EMU33900
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. EMU33780
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. EMU33740
Boating safety This section includes a few of the many im- portant safety precautions that you should follow when boating. EMU33710
Alcohol and drugs Never operate after drinking alcohol or taking drugs. Intoxication is one of the most com- mon factors contributing to boating fatalities. EMU33720
Personal flotation devices Have an approved personal flotation device (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 boat- ing conditions. EMU33731
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. EMU33751
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 any unusual maneuver. Always avoid jump- ing waves or wakes. EMU33760
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
6BP-9-35-1E0.book 2
Safety information
3
swamping. EMU33772
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.
EMU33790
Weather Stay informed about the weather. Check weather forecasts before boating. Avoid boating in hazardous weather.
EMU44160
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. EMU44170
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 BoatU.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,
ZMU06025
6BP-9-35-1E0.book 3
Safety information
4
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 on-line option. De- tails can be found on Transport Canadas website. www.tc.gc.ca EMU33880
Passenger training Make sure at least one other passenger is trained to operate the boat in the event of an emergency. EMU33890
Boating safety publications Be informed about boating safety. Additional publications and information can be obtained from many boating organizations. EMU33590
Laws and regulations Know the marine laws and regulations where you will be boating- and 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- densed- and 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. EMU44180
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 http://www.uscgboating.org/
United States Power Squadrons 1-888-FOR-USPS (1-888-367-8777) http://www.usps.org/
Boat Owners Association of The United States 1-800-336-BOAT (1-800-336-2628) http://www.boatus.com/
National Association of State Boating Law Administrators (NASBLA) 1500 Leestown Road, Suite 330 Lexington, KY 40511 859-225-9497 http://www.nasbla.org/
National Marine Manufacturers Associa- tion (NMMA) 200 East Randolph Drive Suite 5100 Chicago, IL 60601 http://www.nmma.org/
Marine Retailers Association of America 155 N. Michigan Ave. Chicago, IL 60304 http://www.mraa.com/
In the Canada National Marine Manufacturers Associa- tion Canada 14 McEwan Drive Suite 8
6BP-9-35-1E0.book 4
Safety information
5
Bolton, ON L7E 1H1 http://www.nmma.org/
EMU33691
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- 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. EMU33700
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 burdenedvessel. 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 vessels. EMU25521
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.
6BP-9-35-1E0.book 5
Safety information
6
Meeting If you are meeting another power vessel head on, and are close enough to run the 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 ves- sel on your port (left) side. This rule doesnt apply if both of you will clear one another 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. EMU25531
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
6BP-9-35-1E0.book 6
Safety information
7
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 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.
6BP-9-35-1E0.book 7
Safety information
8
ZMU01708
6BP-9-35-1E0.book 8
9
General information EMU25171
Identification numbers record EMU25184
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.
EMU25191
Key number If a main key switch is equipped with the mo- tor, the key identification number is stamped on your key as shown in the illustration. Record this number in the space provided for
reference in case you need a new key.
1. Outboard motor serial number location
1
ZMU06472
1. Key number
6BP-9-35-1E0.book 9
General information
10
EMU33523
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. EMU33832
Warning labels If these labels are damaged or missing, contact your Yamaha dealer for replacements. F25A, F25EA, T25A
1
3
2
ZMU07710
6BP-9-35-1E0.book 10
General information
11
F25EHA, F25EHB, F25MHA, F25MHB
ZMU06594
1 2
3
6BP-9-35-1E0.book 11
General information
12
EMU33912
Contents of labels The above warning labels mean as follows. 1
WARNING EWM01691
Emergency starting does not have start- in-gear protection. Ensure shift control is in neutral before starting engine.
2
WARNING EWM01681
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
WARNING EWM01671
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.
1 2
3
ZMU05740
6BP-9-35-1E0.book 12
General information
13
EMU35132
Symbols The following symbols mean as follows.
Notice/Warning
Read Owners Manual
Hazard caused by continuous rotation
Electrical hazard
ZMU05696
ZMU05664
ZMU05665
ZMU05666
6BP-9-35-1E0.book 13
14
Specifications and requirements EMU34521
Specifications TIP: (AL) stated in the specification data below represents the numerical value for the alumi- num propeller installed. Likewise, (SUS) represents the value for stainless steel propeller installed and (PL) for plastic propeller installed. EMU2821P
Dimension: Overall length:
F25A 692 mm (27.2 in) F25EA 692 mm (27.2 in) F25EHA 1181 mm (46.5 in) F25EHB 1181 mm (46.5 in) F25MHA 1181 mm (46.5 in) F25MHB 1181 mm (46.5 in) T25A 692 mm (27.2 in)
Overall width: F25A 398 mm (15.7 in) F25EA 398 mm (15.7 in) F25EHA 412 mm (16.2 in) F25EHB 412 mm (16.2 in) F25MHA 412 mm (16.2 in) F25MHB 412 mm (16.2 in) T25A 398 mm (15.7 in)
Overall height S: F25EA 1156 mm (45.5 in) F25EHA 1156 mm (45.5 in) F25MHA 1156 mm (45.5 in)
Overall height L: F25A 1283 mm (50.5 in) F25EA 1283 mm (50.5 in) F25EHB 1283 mm (50.5 in) F25MHB 1283 mm (50.5 in) T25A 1311 mm (51.6 in)
Motor transom height S: F25EA 423 mm (16.7 in) F25EHA 423 mm (16.7 in)
F25MHA 423 mm (16.7 in) Motor transom height L:
F25A 550 mm (21.7 in) F25EA 550 mm (21.7 in) F25EHB 550 mm (21.7 in) F25MHB 550 mm (21.7 in) T25A 536 mm (21.1 in)
Dry weight (AL) S: F25EA 77 kg (171 lb) F25EHA 80 kg (176 lb) F25MHA 79 kg (174 lb)
Dry weight (AL) L: F25A 84 kg (185 lb) F25EA 79 kg (174 lb) F25EHB 84 kg (184 lb) F25MHB 84 kg (185 lb) T25A 92 kg (203 lb)
Performance: Full throttle operating range:
50006000 r/min Rated power:
18.4 kW (25 HP) Idle speed (in neutral):
925-1025 r/min Engine:
Type: 4-stroke SOHC L2 4valves
Displacement: 498 cm3 (16.8 US oz, 17.6 Imp.oz)
Bore stroke: 65.0 75.0 mm (2.56 2.95 in)
Ignition system: CDI
Spark plug (NGK): DPR6EB-9
Spark plug gap: 0.80.9 mm (0.0310.035 in)
Control system: F25A Remote control F25EA Remote control F25EHA Tiller handle
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Specifications and requirements
15
F25EHB Tiller handle F25MHA Tiller handle F25MHB Tiller handle T25A Remote control
Starting system: F25A Electric starter F25EA Electric starter F25EHA Electric starter F25EHB Electric starter F25MHA Manual starter F25MHB Manual starter T25A Electric starter
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)
Min. cold cranking amps (CCA/SAE): F25A 245 A F25EA 245 A F25EHA 245 A F25EHB 245 A T25A 245 A
Min. marine cranking amps (MCA/ABYC): F25A 323 A F25EA 323 A F25EHA 323 A F25EHB 323 A T25A 323 A
Min. reserve capacity (RC/SAE): F25A 52 minutes F25EA 52 minutes F25EHA 52 minutes F25EHB 52 minutes T25A 52 minutes
Maximum generator output: 14 A
Drive unit: Gear shift positions:
Forward-neutral-reverse
Gear ratio: F25A 2.08(27/13) F25EA 2.08(27/13) F25EHA 2.08(27/13) F25EHB 2.08(27/13) F25MHA 2.08(27/13) F25MHB 2.08(27/13) T25A 2.42(29/12)
Trim and tilt system: F25A Power trim and tilt F25EA Manual tilt F25EHA Manual tilt F25EHB Hydro tilt F25MHA Manual tilt F25MHB Hydro tilt T25A Power trim and tilt
Propeller mark: F25A F F25EA F F25EHA F F25EHB F F25MHA F F25MHB F T25A G
Fuel and oil: Recommended fuel:
Regular unleaded gasoline Min. pump octane number:
86 Fuel tank capacity:
25 L (6.60 US gal, 5.50 Imp.gal) Recommended engine oil:
YAMALUBE 4-M 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):
1.4 L (1.48 US qt, 1.23 Imp.qt)
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Engine oil quantity (with oil filter replace- ment):
1.6 L (1.69 US qt, 1.41 Imp.qt) Lubrication system:
Wet sump Recommended gear oil:
Hypoid gear oil Recommended gear oil grade:
SAE 90 API GL-4 Gear oil quantity:
F25A 0.320 L (0.338 US qt, 0.282 Imp.qt) F25EA 0.320 L (0.338 US qt, 0.282 Imp.qt) F25EHA 0.320 L (0.338 US qt, 0.282 Imp.qt) F25EHB 0.320 L (0.338 US qt, 0.282 Imp.qt) F25MHA 0.320 L (0.338 US qt, 0.282 Imp.qt) F25MHB 0.320 L (0.338 US qt, 0.282 Imp.qt) T25A 0.430 L (0.455 US qt, 0.378 Imp.qt)
Tightening torque for engine: Spark plug:
17 Nm (1.73 kgf-m, 12.5 ft-lb) Propeller nut:
35 Nm (3.57 kgf-m, 25.8 ft-lb) Engine oil drain bolt:
27 Nm (2.75 kgf-m, 19.9 ft-lb) Engine oil filter:
18 Nm (1.84 kgf-m, 13.3 ft-lb) EMU33554
Installation requirements EMU33564
Boat horsepower rating
WARNING EWM01560
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. EMU33571
Mounting motor
WARNING EWM01570
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 motor is very heavy, spe- cial equipment and training is required to mount it safely.
Your dealer or other person experienced in proper rigging should mount the motor using correct equipment and complete rigging in- structions. For further information, see page 42. EMU33581
Remote control requirements
WARNING EWM01580
If the engine starts in gear, the boat can move suddenly and unexpectedly, pos- sibly causing a collision or throwing passengers overboard.
If the engine ever starts in gear, the start-in-gear protection device is not working correctly and you should dis- continue using the outboard. Contact your Yamaha dealer.
The remote control unit must be equipped with a start-in-gear protection device(s). This device prevents the engine from starting un- less it is in neutral.
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EMU25694
Battery requirements EMU25713
Specifications of Battery Use a fully charged battery that meets the following specifications. The engine cannot be started if battery voltage is too low.
NOTICE ECM01061
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 poorly or be overloaded, causing electric system damage.
EMU36290
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. [EWM01820] EMU36300
Multiple batteries To connect multiple batteries, such as for multiple engine configurations or for an ac- cessory battery, consult your Yamaha dealer about battery selection and correct wiring. EMU25730
Without a rectifier or Rectifier Regulator
NOTICE ECM01090
A battery cannot be connected to models that do not have a rectifier or Rectifier Regulator.
If you wish to use a battery with the models without a rectifier or Rectifier Regulator, in- stall an optional Rectifier Regulator. Using a maintenance-free battery with the above models can shorten the life of the bat- tery significantly. 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. EMU34195
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
Minimum cold cranking amps (CCA/SAE):
F25A 245 A F25EA 245 A F25EHA 245 A F25EHB 245 A T25A 245 A
Minimum marine cranking amps (MCA/ABYC):
F25A 323 A F25EA 323 A F25EHA 323 A F25EHB 323 A T25A 323 A
Minimum reserve capacity (RC/SAE): F25A 52 minutes F25EA 52 minutes F25EHA 52 minutes F25EHB 52 minutes T25A 52 minutes
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propeller selected to perform well over a range of applications, but