Yamaha F25SMHC v6 Owner's Manual
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Read this manual carefully before operating this outboard motor.
OWNERS MANUAL
F25
LIT-18626-11-48 6FM-28199-30-E00
6FM-9-30-1E0_1.book 1
EMU25064
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.
6FM-9-30-1E0_1.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.
WARNING EWM00782
A WARNING indicates a hazardous situa- tion which, if not avoided, could result in death or serious injury.
NOTICE 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 F25C, F25WC, F25WTC, F25WHC, F25MHC and the standard accessories are used as a base for the explanations and illus- trations in this manual. Therefore some items may not apply to every model. EMU44151
F25 OWNERS MANUAL
2016 by Yamaha Motor Co., Ltd. 1st Edition, October 2016
All rights reserved. Any reprinting or unauthorized use without the written permission of
Yamaha Motor Co., Ltd. is expressly prohibited.
Printed in Japan
6FM-9-30-1E0_1.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 (PFDs) ....... 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
Compliance mark and manufactured date label................ 9
Read manuals and labels...............11 Warning labels .................................. 11
Specifications and requirements ................................... 15
Specifications................................. 15 Installation requirements................ 16
Boat horsepower rating ..................... 16 Mounting outboard motor .................. 16
Remote control requirements......... 17 Battery requirements...................... 17
Battery specifications ........................ 17 To install the battery .......................... 18
Propeller selection ......................... 18 Start-in-gear protection .................. 19 Engine oil requirements ................. 19 Fuel requirements .......................... 19
Gasoline ............................................ 19 Gasoline Additives............................. 21
Muddy or acidic water .................... 21 Anti-fouling paint ............................ 21 Outboard motor disposal
requirements............................... 22 Emergency equipment ................... 22 Emission control information ......... 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
6FM-9-30-1E0_1.book 1
Table of contents Engine stop button ........................... 32 Manual starter handle........................ 33 Starter button..................................... 33 Main switch........................................ 33 Steering friction adjuster.................... 34 Power trim and tilt switch on remote
control or tiller handle..................... 34 Power trim and tilt switch on bottom
cowling ........................................... 35 Variable trolling RPM switches ......... 35 Trim tab with anode........................... 36 Trim rod (tilt pin) ................................ 36 Tilt lock mechanism........................... 36 Tilt support knob................................ 36 Tilt support bar .................................. 37 Cowling lock lever ............................. 37 Flushing device ................................. 37 Alert indicator ................................... 38
Instruments and indicators ............ 39 Indicators .......................................39
Low oil pressure-alert indicator ......... 39 Overheat-alert indicator..................... 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............ 44
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 ........................................... 46 Remove the top cowling .................... 46 Fuel system....................................... 46 Controls ............................................. 46
Engine shut-off cord (lanyard) ........... 47 Engine oil........................................... 47 Engine ............................................... 48 Flushing device ................................. 48 Install top cowling .............................. 48 Checking power trim and tilt
system............................................ 49 Battery ............................................... 49
Filling fuel....................................... 49 Operating engine ........................... 51
Sending fuel (portable tank) .............. 52 Starting engine .................................. 53
Checks after starting engine .......... 58 Cooling water .................................... 58
Warming up engine........................ 58 Manual start and electric start
models ........................................... 58 Checks after engine warm up ........ 58
Shifting .............................................. 58 Stop switches .................................... 58
Shifting ........................................... 59 Stopping boat................................. 61 Trolling ........................................... 61
Adjusting trolling speed ..................... 61 Stopping engine............................. 61
Procedure.......................................... 61 Trimming outboard motor............... 63
Adjusting trim angle for manual tilt models ........................................... 63
Adjusting trim angle (Power trim and tilt) .................................................. 64
Adjusting boat trim............................. 65 Tilting up and down........................ 66
Procedure for tilting up (manual tilt models) .......................................... 66
Procedure for tilting up (power trim and tilt models)............................... 67
Procedure for tilting down (manual tilt models)...................................... 68
Procedure for tilting down (power trim and tilt models)........................ 69
Shallow water ................................ 69 Cruising in shallow water (manual
tilt models)...................................... 69
6FM-9-30-1E0_1.book 2
Table of contents Power trim and tilt models ................. 71
Cruising in other conditions............ 72
Maintenance..................................... 73 Transporting and storing outboard
motor ........................................... 73 Dismounting the outboard motor ....... 73 Storing outboard motor...................... 75 Conditioning and stabilizing
gasoline.......................................... 75 Procedure.......................................... 76 Lubrication......................................... 77 Cleaning and anticorrosion
measures ....................................... 77 Flushing power unit ........................... 77 Cleaning the outboard motor............. 78 Checking painted surface of
outboard motor............................... 78 Periodic maintenance.....................78
Replacement parts ............................ 79 Maintenance interval guidelines ........ 79 Maintenance chart 1.......................... 80 Maintenance chart 2.......................... 82 Greasing............................................ 83 Cleaning and adjusting spark plug .... 84 Checking fuel filter............................. 86 Inspecting idle speed......................... 86 Changing engine oil........................... 86 Inspecting wiring and connectors ...... 89 Checking propeller ............................ 89 Removing propeller ........................... 90 Installing propeller ............................. 90 Changing gear oil .............................. 91 Inspecting and replacing anode(s) .... 92 Checking battery (for electric start
models) .......................................... 93 Connecting the battery ...................... 93 Disconnecting the battery.................. 94
Trouble Recovery............................95 Troubleshooting ............................95 Temporary action in emergency.....98
Impact damage.................................. 98 Replacing fuse................................... 98
Power trim and tilt will not operate .... 99 Starter will not operate ...................... 99 Emergency starting engine
(manual start model) .................... 100 Emergency starting engine (electric
start model) .................................. 101 Treatment of submerged motor ... 103
Consumer information (For North America) ...................... 104
YAMAHA FOUR-STROKE OUTBOARD MOTOR THREE-YEAR LIMITED WARRANTY ............................. 104
IMPORTANT WARRANTY INFORMATION IF YOU USE YOUR YAMAHA OUTSIDE THE U.S.A. OR CANADA......... 106
INDEX............................................. 107
6FM-9-30-1E0_1.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.
EMU33661
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. 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. EMU33811
Gasoline Gasoline and its vapors are highly flam- mable and explosive. Always, refuel ac-
6FM-9-30-1E0_1.book 1
Safety information
2
cording to the procedure on page 51 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. EMU33741
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 any unusual maneuver. Always avoid jump- ing waves or wakes. EMU33762
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-
6FM-9-30-1E0_1.book 2
Safety information
3
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.
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. EMU44171
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-
ZMU06025
6FM-9-30-1E0_1.book 3
Safety information
4
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 on-line 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. 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. EMU44740
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/
6FM-9-30-1E0_1.book 4
Safety information
5
In Canada National Marine Manufacturers Associa- tion Canada 14 McEwan Drive Suite 8 Bolton, ON L7E 1H1 http://www.nmma.org/
In Australia Boating Industry Association of Australia http://www.biaa.com.au/
In New Zealand NZ Marine Industry Association http://www.nzmarine.com/
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- 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. EMU25522
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)
6FM-9-30-1E0_1.book 5
Safety information
6
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 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. 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
6FM-9-30-1E0_1.book 6
Safety information
7
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 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.
6FM-9-30-1E0_1.book 7
Safety information
8
ZMU01708
6FM-9-30-1E0_1.book 8
9
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.
EMU25192
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. Re- cord this number in the space provided for reference in case you need a new key.
EMU46132
Compliance mark and manufactured date label
Engines affixed with this label conform to the regulations for each country. This label is affixed to the clamp bracket or swivel bracket.
1. Outboard motor serial number location
1. Serial number 2. Model name 3. Motor transom height 4. Approved model code
1
ZMU08713
34 12
ZMU01692
1. Key number
1. Compliance mark and manufactured date label location
1
ZMU01694
1
ZMU08714
6FM-9-30-1E0_1.book 9
General information
10
Regulatory Compliance Mark (RCM) Engines affixed with this mark conform to certain portion(s) of the Australian Radio Communications Act.
ICES-002 Compliance Label Engines affixed with this mark meet all re- quirements of the Canadian Interference Causing Equipment Regulations.
Manufactured date The manufactured date is stamped on the la- bel for the engines that conform to the regu- lations for U.S. Environmental Protection Agency (EPA). The models that manufac- tured exclusively for the Oceanian countries may not have manufactured date on the la- bel.
1. Compliance mark and manufactured date label location
1. Regulatory Compliance Mark (RCM)
1 ZMU08715
ZMU08190
1
1. ICES-002 Compliance Label
1. Manufactured date
ZMU08191 1
ZMU08192
1
6FM-9-30-1E0_1.book 10
General information
11
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. F25C
3
1 2
ZMU08716
6FM-9-30-1E0_1.book 11
General information
12
F25MHC, F25WHC, F25WC, F25WTC
3
1 2
ZMU08717
6FM-9-30-1E0_1.book 12
General information
13
EMU33913
Contents of labels The above warning labels mean as follows. 1
WARNING EWM01692
Emergency starting does not have start- in-gear protection. Ensure shift control is in neutral before starting engine.
2
WARNING 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
WARNING 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
6FM-9-30-1E0_1.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
6FM-9-30-1E0_1.book 14
15
Specifications and requirements EMU34522
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. EMU2821V
Dimension and weight: Overall length:
1130 mm (44.5 in) (F25MHC, F25WHC) 633 mm (24.9 in) (F25C, F25WC, F25WTC)
Overall width: 378 mm (14.9 in)
Overall height S: 1106 mm (43.5 in) (F25MHC, F25WC, F25WHC)
Overall height L: 1233 mm (48.5 in) (F25C, F25MHC, F25WC, F25WHC, F25WTC)
Motor transom height S: 424 mm (16.7 in) (F25MHC, F25WC, F25WHC)
Motor transom height L: 551 mm (21.7 in) (F25MHC, F25WC, F25WHC) 553 mm (21.8 in) (F25C, F25WTC)
Dry weight (AL) S: 57 kg (126 lb) (F25MHC, F25WC) 60 kg (132 lb) (F25WHC)
Dry weight (AL) L: 59 kg (130 lb) (F25MHC, F25WC) 62 kg (137 lb) (F25WHC) 64 kg (141 lb) (F25C) 65 kg (143 lb) (F25WTC)
Performance: Full throttle operating range:
50006000 r/min Rated power:
18.4 kW (25 HP) Idle speed (in neutral):
850950 r/min Power unit:
Type: 4-stroke SOHC L2 4 valves
Total displacement: 432 cm3 (26.4 c.i.)
Bore stroke: 65.0 65.1 mm (2.56 2.56 in)
Ignition system: CDI
Spark plug (NGK): DPR6EB-9
Spark plug gap: 0.80.9 mm (0.0310.035 in)
Steering system: Remote steering (F25C, F25WC, F25WTC) Tiller handle (F25MHC, F25WHC)
Starting system: Electric starter (F25C) Manual starter (F25MHC) Manual starter and Electric starter (F25WC, F25WHC, F25WTC)
Starting carburetion system: Fuel injection
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
Battery rating (MCA/ABYC): 323520 A
Battery rating (RC/SAE): 52 minutes
6FM-9-30-1E0_1.book 15
Specifications and requirements
16
Battery rating (CCA/EN): 347411 A
Battery rating (20HR/IEC): 40 Ah
Maximum generator output: 16 A
Lower unit: Gear shift positions:
Forward-neutral-reverse Gear ratio:
2.08 (27/13) Trim and tilt system:
Manual tilt (F25MHC, F25WC, F25WHC) Power trim and tilt (F25C, F25WTC)
Propeller mark: F
Fuel and oil: Recommended fuel:
Regular unleaded gasoline Min. pump octane number (PON):
86 Min. research octane number (RON):
90 Fuel tank capacity:
25 L (6.60 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 SG/SH/SJ/SL
Engine oil quantity (without oil filter re- placement):
1.0 L (1.0 US qt, 0.85 Imp.qt) Engine oil quantity (with oil filter replace- ment):
1.1 L (1.2 US qt, 1.0 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: 0.370 L (0.391 US qt, 0.326 Imp.qt)
Tightening torque: Spark plug:
17 Nm (1.73 kgfm, 12.5 lbft) Propeller nut:
34 Nm (3.47 kgfm, 25.1 lbft) Engine oil drain bolt:
27 Nm (2.75 kgfm, 19.9 lbft) Engine oil filter:
18 Nm (1.84 kgfm, 13.3 lbft) EMU33556
Installation requirements EMU33565
Boat horsepower rating
WARNING 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
WARNING 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
6FM-9-30-1E0_1.book 16
Specifications and requirements
17
proper rigging should mount the outboard motor using correct equipment and complete rigging instructions. For further information, see page 42. EMU33582
Remote control requirements
WARNING EWM01581
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. EMU25695
Battery requirements EMU44723
Battery specifications Standard lead-acid, AGM, gel-cell, and maintenance-free batteries are permitted. Use a fully charged battery that meets the following specifications. The battery is an im- portant component necessary to obtain sure engine starting and to maintain engine per- formance. The engine may not start if the battery volt- age is too low. For North America It is necessary to meet only two of the three specifications (CCA, MCA, and RC) in one of the following combinations: CCA/SAE and RC
MCA/ABYC and RC
For Oceania It is necessary to meet the following specifi- cations.
NOTICE ECM01063
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- ceed 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.
Battery rating (CCA/SAE): 245433 A
Battery rating (MCA/ABYC): 323520 A
Battery rating (RC/SAE): 52 minutes
Battery rating (CCA/EN): 347411 A
Battery rating (20HR/IEC): 40 Ah
6FM-9-30-1E0_1.book 17
Specifications and requirements
18
Consult your Yamaha dealer about the bat- tery cable size and length. EMU36303
Multiple batteries To connect multiple batteries, such as for multiple engine configurations or for an ac- cessory battery, consult