Yamaha F2.5 Owner's Manual
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Yamaha F2.5 Owner's Manual

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F2.5
OWNER'S MANUAL
U.S.A.Edition
LIT-18626-07-04
69M-F8199-15

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Summary of Contents for Yamaha F2.5

  • Page 1 F2.5 OWNER’S MANUAL U.S.A.Edition LIT-18626-07-04 69M-F8199-15...
  • Page 2 ZMU01690 Read this owner’s manual carefully before operating your outboard motor.

  • Page 3: Important Manual Information

    EMU31280 your machine and this manual. If there is any To the owner question concerning this manual, please con- Thank you for choosing a Yamaha outboard sult your Yamaha dealer. motor. This Owner’s Manual contains infor- NOTE: mation needed for proper operation, mainte- The F2.5MH and the standard accessories...

  • Page 4: Table Of Contents

    Table of contents Operation ......... 17 General information ......1 Installation........17 Identification numbers record ..1 Mounting the outboard motor ... 17 Outboard motor serial number ... 1 Clamping the outboard motor ... 18 Emission control information ... 1 Breaking in engine ......
  • Page 5 IMPORTANT WARRANTY Cleaning and adjusting spark plug ... 36 INFORMATION IF YOU USE Checking fuel system ....... 37 YOUR YAMAHA OUTSIDE Inspecting idling speed..... 38 THE USA OR CANADA ..... 56 Changing engine oil......38 Checking wiring and connectors ..40 Exhaust leakage.......

  • Page 6: General Information

    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. 1. Approval label location 1.

  • Page 7: Star Labels

    General information Manufactured: ZMU01702 ZMU04346 EMU25290 EMU25272 Two Stars—Very Low Emission Star labels The two-star label identifies engines that meet Your outboard motor is labeled with a Califor- the Air Resources Board’s 2004 exhaust nia Air Resources Board (CARB) star label. emission standards.

  • Page 8: Safety Information

    General information ing. At a minimum, children and non-swim- mers should always wear PFDs, and everyone should wear PFDs when there are potentially hazardous boating condi- tions. Gasoline is highly flammable, and its va- pors are flammable and explosive. Handle and store gasoline carefully.

  • Page 9: Important Labels

    If necessary, verify the necessary replacement proce- dure with the dealer. Never illegally discard (dump) the product. Yamaha recommends consulting the deal- er on discarding the product. Be informed about boating safety. Additional publications and information can be obtained...

  • Page 10: Caution Labels

    General information Turn the fuel cock to the “closed” posi- ed States Coast Guard and local agencies. tion. You should be aware of these rules, and fol- Tighten the air-vent screw on the fuel low them whenever you encounter another tank cap.

  • Page 11: Rules When Encountering Vessels

    General information “The general prudential rule” This rule is called Rule 2 in the International Rules and says, “In obeying and construing these rules due re- gard shall be had to all dangers of navigation and collision, and to any special circumstanc- es, which may render a departure from the above rules necessary in order to avoid im- mediate danger.”...

  • Page 12: Other Special Situations

    General information Fishing vessel right-of-way All vessels which 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 re- gardless of position.
  • Page 13 General information System has been devised for these waters. Remember, markings may vary by geograph- This system uses buoys and signs with dis- ic location. Always consult local boating au- tinctive shapes and colors to show regulatory thorities before driving your boat in unfamiliar or advisory information.

  • Page 14: Fueling Instructions

    GASOLINE AND ITS VAPORS ARE HIGH- ethanol content does not exceed 10% and the LY FLAMMABLE AND EXPLOSIVE! fuel meets minimum octane ratings. Yamaha Do not smoke when refueling, and keep does not recommended gasohol containing away from sparks, flames, or other methanol because it can cause fuel system sources of ignition.

  • Page 15: Propeller Selection

    40. on the engine. Yamaha outboard motors are fitted with pro- pellers chosen to perform well over a range of applications, but there may be uses where a propeller with a different pitch would be more appropriate.

  • Page 16: Basic Components

    Basic components EMU25797 Main components NOTE: * May not be exactly as shown; also may not be included as standard equipment on all models. 1. Top cowling 17.Gear shift lever 2. Top cowling lock lever 18.Choke knob 3. Carrying handle EMU25821 Fuel tank 4.

  • Page 17: Fuel Tank Cap

    Basic components 1. Fuel tank cap 1. Close position 2. Air vent screw EMU25891 Open EMU25850 Fuel tank cap With the lever/knob in this position, fuel flows This cap seals the fuel tank. When removed, to the carburetor. the tank can be filled with fuel. To remove the Normal running is done with the lever/knob in cap, turn it counterclockwise.

  • Page 18: Gear Shift Lever

    Basic components EMU25930 Gear shift lever Pulling the gear shift lever towards you puts the engine in forward gear so that the boat moves ahead. 1. Throttle indicator EMU25971 Throttle friction adjuster A friction device provides adjustable resis- tance to movement of the throttle grip or the 1.

  • Page 19: Engine Stop Lanyard Switch

    Basic components EMU25990 EMU26001 Engine stop lanyard switch Engine stop button The lock plate must be attached to the engine To open the ignition circuit and stop the en- stop switch for the engine to run. The lanyard gine, push this button. should be attached to a secure place on the operator’s clothing, or arm or leg.

  • Page 20: Steering Friction Adjuster

    Basic components EMU26122 EMU30200 Steering friction adjuster Tilt support lever for manual tilt model A friction device provides adjustable resis- To keep the outboard motor in the tilted up po- tance to the steering mechanism, and can be sition, lock the tilt support lever to the clamp set according to operator preference.

  • Page 21: Carrying Handle

    Basic components EMU26450 Carrying handle A carrying handle is provided on the rear of the outboard motor. It enables you to carry the outboard motor easily with one hand.

  • Page 22: Operation

    Operation EMU26901 EWM00830 Installation WARNING ECM00110 Improper mounting of the outboard motor CAUTION: could result in hazardous conditions such Incorrect engine height or obstructions to as poor handling, loss of control, or fire smooth water flow (such as the design or hazards.

  • Page 23: Clamping The Outboard Motor

    Consult your mounting point on the boat. Otherwise Yamaha dealer or boat manufacturer for the engine could be completely lost if it further information on determining the prop- accidentally falls off the transom.

  • Page 24: Breaking In Engine

    Operation EWM00650 EMU27102 Preoperation checks WARNING EWM00080 Avoid using bolts, nuts or washers other WARNING than those contained in the engine pack- If any item in the preoperation check is not aging. If used, they must be of at least the working properly, have it inspected and same quality of material and strength and repaired before operating the outboard...

  • Page 25: Filling Fuel For Built-In Tank

    1. Lower level mark 2. Upper level mark While many additives available may reduce EMU30850 Filling fuel for built-in tank deposits, Yamaha recommends the use of EWM00060 Ring Free Fuel Additive, available from your WARNING Yamaha dealer. Ring Free Fuel Additive...

  • Page 26: Operating Engine

    Operation EMU27450 Operating engine EMU31510 Feeding fuel EWM00420 WARNING Before starting the engine, make sure that the boat is tightly moored and that you can steer clear of any obstructions. Be sure there are no swimmers in the water near you. When the air vent screw is loosened, EMU27490 Starting engine...
  • Page 27 Operation Do not attach the lanyard to clothing that could tear loose. Do not route the lanyard where it could become entan- gled, preventing it from functioning. Avoid accidentally pulling the lanyard during normal operation. Loss of engine power means the loss of most steering control.

  • Page 28: Warming Up Engine

    Operation If the engine does not start on the first try, blocked. Consult your Yamaha dealer if repeat the procedure. If the engine fails to the problem cannot be located and cor- start after 4 or 5 tries, open the throttle a rected.

  • Page 29: Reverse

    Operation Move the gear shift lever quickly and firm- Turn the outboard motor around 180°, ly from neutral to forward. and then move the tiller handle so that it is facing toward the bow. NOTE: The outboard motor can be turned a full 360° in its bracket (full-pivot system).

  • Page 30: Stopping Engine

    Operation EMU27820 EMU27861 Stopping engine Trimming outboard motor Before stopping the engine, first let it cool off The trim angle of the outboard motor helps for a few minutes at idle or low speed. Stop- determine the position of the bow of the boat ping the engine immediately after operating at in the water.

  • Page 31: Adjusting Trim Angle For Manual Tilt Models

    Operation EMU27872 Adjusting trim angle for manual tilt NOTE: The outboard motor trim angle can be models changed approximately 4 degrees by shifting There are 4 or 5 holes provided in the clamp the trim rod one hole. bracket to adjust the outboard motor trim an- gle.

  • Page 32: Tilting Up And Down

    Operation Bow Down EWM00220 WARNING Too much trim-in causes the boat to “plow” through the water, decreasing fuel economy Be sure all people are clear of the out- and making it hard to increase speed. Operat- board motor when tilting up and down, ing with excessive trim-in at higher speeds also be careful not to pinch any body parts also makes the boat unstable.

  • Page 33: Procedure For Tilting Up (Manual Tilt Models)

    Operation EMU27964 Procedure for tilting up (manual tilt models) Place the gear shift lever in neutral (if equipped) and face the outboard motor forward. Tilt support bar equipped models: Hold the rear of the top cowling or the rear han- dle (if equipped) with one hand and tilt the outboard motor up fully until the tilt sup- port bar automatically locks.

  • Page 34: Procedure For Tilting Down (Manual Tilt Models)

    Operation locked position. If the tilt support lever/bar does not automatically lock, swing the motor a little to the left and right. EMU28032 Procedure for tilting down (manual tilt models) Slightly tilt the outboard motor up. If equipped with the tilt support bar: Slow- ly tilt the outboard motor down while pull- ing the tilt support bar lever up.

  • Page 35: Maintenance

    Maintenance EMU31480 Starting carburetion system: Specifications Choke valve Valve clearance (cold engine) IN: NOTE: 0.08–0.12 mm (0.0032–0.0047 in) “(AL)” stated in the specification data below Valve clearance (cold engine) EX: represents the numerical value for the alumi- 0.08–0.12 mm (0.0032–0.0047 in) Drive unit: num propeller installed.

  • Page 36: Transporting And Storing Outboard Motor

    If there is insufficient road clearance in this position, then trailer the outboard motor in the tilt posi- tion using a motor support device such as a transom saver bar. Consult your Yamaha dealer for further details.

  • Page 37: Storing Outboard Motor

    00) to each gallon of fuel. Place a towel or something similar under the outboard motor to protect it from damage. NOTE: The use of “Yamaha Fuel Conditioner and EMU28241 Storing outboard motor Stabilizer” eliminates the need to drain the When storing your Yamaha outboard motor fuel system.

  • Page 38: Lubrication (Except Oil Injection Models)

    LUB-SILCNE-13-00). when starting or during operation. Wax the cowling with a non-abrasive wax Keep hands, hair, and clothes away from such as “Yamaha Silicone Wax” (Part No. the flywheel and other rotating parts ACC-11000-15-02). while the engine is running. EMU28450...

  • Page 39: Checking Painted Surface Of Motor

    EMU28510 Replacement parts If replacement parts are necessary, use only genuine Yamaha parts or parts of the same type and of equivalent strength and materials. Any part of inferior quality may malfunction, and the resulting loss of control could endan- ger the operator and passengers.

  • Page 40: Maintenance Chart

    When operating in salt water, turbid or muddy water, the engine should be flushed with clean water after each use. The “ ” symbol indicates the check-ups which you may carry out yourself. The “ ” symbol indicates work to be carried out by your Yamaha dealer. Initial Every Item Actions...

  • Page 41: Maintenance Chart (Additional)

    1000 hours (5 years) Exhaust guide, exhaust Inspection / replace- manifold ment EMU28931 Greasing Yamaha marine grease (Water resistant grease) EMU28952 fire. Cleaning and adjusting spark plug EWM00560 The spark plug is an important engine compo- WARNING nent and is easy to inspect. The condition of...

  • Page 42: Checking Fuel System

    NOTE: agnose any problems yourself. Instead, take If a torque-wrench is not available when you the outboard motor to a Yamaha dealer. You are fitting a spark plug, a good estimate of the should periodically remove and inspect the correct torque is 1/4 to 1/2 a turn past finger- spark plug because heat and deposits will tight.

  • Page 43: Inspecting Idling Speed

    If you have difficulty veri- NOTE: fying the idle speed, or the idle speed requires Change the engine oil when the oil is still adjustment, consult a Yamaha dealer or other warm. qualified mechanic. Put the outboard motor in an upright po- Verify whether the idle speed is set to sition (not tilted).
  • Page 44 Consult Drain screw tightening torque: your Yamaha dealer if the problem cannot 18.0 Nm (13.3 ft-lb) (1.84 kgf-m) be located and corrected. NOTE: Turn off the engine and wait 3 minutes.

  • Page 45: Checking Wiring And Connectors

    Maintenance with oil if it is below the lower mark, or NOTE: drain to the specified level if it is above If any leaks are found, consult your Yamaha the upper mark. dealer. EMU29171 Checking propeller EWM00321 WARNING You could be seriously injured if the en- gine accidentally starts when you are near the propeller.

  • Page 46: Removing The Propeller

    The propeller will then spin Apply Yamaha marine grease or a corro- freely on the shaft. If this happens, the shear sion resistant grease to the propeller pin must be replaced.

  • Page 47: Changing Gear Oil

    Never get under the lower unit while it is NOTE: tilted, even when the tilt support lever or For disposal of used oil, consult your Yamaha knob is locked. Severe injury could oc- dealer. cur if the outboard motor accidentally With the outboard motor in a vertical po- falls.

  • Page 48: Inspecting And Replacing Anode(S)

    These paints can cause more rapid engine corrosion. NOTE: Inspect ground leads attached to external an- odes on equipped models. Consult a Yamaha dealer for inspection and replacement of inter- nal anodes attached to the power unit.
  • Page 49 Maintenance...

  • Page 50: Trouble Recovery

    Yamaha outboard motors. Therefore Q. Has fuel pump malfunctioned? some items may not apply to your model. A. Have serviced by a Yamaha dealer. If your outboard motor requires repair, bring it to your Yamaha dealer. Q. Are spark plug(s) fouled or of incorrect...
  • Page 51 A. Return to normal operating position. A. Fill tank with clean, fresh fuel. Q. Is carburetor clogged? Q. Is fuel filter clogged? A. Have serviced by a Yamaha dealer. A. Clean or replace filter. Q. Is fuel joint connection incorrect? Q. Have ignition parts failed? A.
  • Page 52 Q. Is fuel system obstructed? Q. Is water pump or thermostat faulty? A. Check for pinched or kinked fuel line or oth- A. Have serviced by a Yamaha dealer. er obstructions in fuel system. Q. Is there excess water in fuel filter cup? Q.

  • Page 53: Temporary Action In Emergency

    A. Tighten bolt. EWM01450 WARNING Q. Is steering pivot loose or damaged? Use this procedure only in an emergen- A. Tighten or have serviced by a Yamaha cy to return to the nearest port for re- dealer. pairs. EMU29432 Temporary action in emergency Make sure the remote control lever is in neutral.

  • Page 54: Emergency Starting Engine

    Trouble Recovery Do not attach the lanyard to clothing that could tear loose. Do not route the cord where it could become entangled, preventing it from functioning. Avoid accidentally pulling the lanyard during normal operation. Loss of engine power means the loss of most steering control.
  • Page 55 Trouble Recovery Remove the starter case by pulling it to- 10. Prepare the engine for starting; see page wards you. 21. Be sure the engine is in neutral and that the engine stop switch lanyard lock plate is attached to the engine stop switch.

  • Page 56: Treatment Of Submerged Motor

    Engine oil capacity: If the outboard motor is submerged, immedi- 0.35 L (0.37 US qt) (0.31 Imp.qt) ately take it to a Yamaha dealer. Otherwise some corrosion may begin almost immediate- Feed engine fogging oil or engine oil through the carburetor(s) and spark plug...

  • Page 57: Consumer Information

    Consumer information EMU29811 Important warranty information for U.S.A. and Canada...
  • Page 58 Consumer information...

  • Page 59: Yamaha Motor

    Consumer information EMU29830 YAMAHA MOTOR CORPORATION, U.S.A. FOUR-STROKE OUTBOARD MOTOR THREE-YEAR LIMITED WARRANTY...
  • Page 60 Consumer information...

  • Page 61: Important Warranty Information If You Use Your Yamaha Outside The Usa Or Canada

    Consumer information EMU29841 IMPORTANT WARRANTY INFORMATION IF YOU USE YOUR YAMAHA OUTSIDE THE USA OR CANADA...
  • Page 64 YAMAHA MOTOR CORPORATION, USA Printed in France January 2006–0.3 × 1 CR...

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