Yamaha F25B Bedienungsanleitung

F25B T25B O WNER’S MANU AL U .S.A.Edition LIT -18626-05-06 65W-9-16 hyoshi 4/18/02 3:15 PM Page 1 (2,1)[...]

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E Thank you for choosing a Yamaha outboard motor. This Owner’s manual contains infor- mation needed for proper operation, mainte- nance and care. A thorough understanding of these simple instructions will help you obtain maximum enjoyment from your new Yamaha. If you have any question about the operation or maintenance of your outboard motor, ple[...]

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E GENERAL INFORMA TION BASIC COMPONENTS OPERA TION MAINTENANCE TROUBLE RECOVERY INDEX READ THIS OWNER’S MANUAL CAREFULL Y BEFORE OPERA TING YOUR OUTBOARD MOTOR. 1 2 3 4 5 6 EMU00003 CONTENTS 65W-9-16-1 3/15/02 5:11 PM Page 3[...]

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E 2 3 4 5 6 EMU00004 Chapter 1 GENERAL INFORMA TION IDENTIFICATION NUMBERS RECORD ..1-1 Outboard motor serial number ...........1-1 Key number...........................................1-1 EMISSION CONTROL INFORMATION ...1-2 SAFETY INFORMATION ..........................1-4 IMPORTANT LABELS ..............................1-6 BASIC BOATING RULES .....[...]

E 1-1 EMU00005 IDENTIFICA TION NUMBERS RECORD EMU00007 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 num- ber in the spaces provided to assist you in ordering spare parts from your Yamaha dealer or for reference in case your out[...]

E 1-2 q w EMU01385 EMISSION CONTROL INFORMA TION EMU01387 NORTH AMERICAN MODELS This engine conforms to U.S. Environ- mental Protection Agency (EPA) regula- tions for marine SI engines. See the label affixed to your engine for details. Approval label of Emission control certificate This label is attached to the bottom cowl- ing. 1 Emission control [...]

1-3 E EMU01389 STAR LABELS Your outboard motor is labeled with a California Air Resources Board (CARB) star label. See below for a description of your particular label. 1 Star label One Star - Low Emission The one-star label identifies engines that meet the Air Resources Board’s 2001 exhaust emission standards. Engines meeting these standards hav[...]

1-4 E 8 This product emits exhaust gases which contain carbon monoxide, a colorless, odorless gas which may cause brain damage or death when inhaled. Symp- toms include nausea, dizziness, and drowsiness. Keep cockpit and cabin areas well ventilated. Avoid blocking exhaust outlets. 8 Check throttle, shift, and steering for proper operation before st[...]

1-5 E 8 Be informed about boating safety. Addi- tional publications and information can be obtained from many organizations, including the following: United States Coast Guard Consumer Affairs Staff (G-BC) Office of Boating, Public, and Consumer Affairs U.S. Coast Guard Headquarters Washington, D.C. 20593-0001 Boating Safety Hotline: 1-800-368-5647[...]

1-6 E EMU00014 IMPORT ANT LABELS WARNING LABELS 1 2 CAUTION LABELS 3 202054* w e q WARNING This engine is equipped with a neutral starting device. The engine will not start unless the shift control is in neutral position. 6E0-83627-41 WARNING 7 Be sure shift control is in neutral before starting engine. (except 2HP) 7 Do not touch or remove electri[...]

1-7 E EMU00015 BASIC BOA TING RULES (Rules of the road) Just as there are rules which apply when you are driving on streets and high ways, there are waterway rules which apply when you are driving your boat. These rules are used internationally, and are also enforced by the United States Coast Guard and local agencies. You should be aware of these [...]

1-8 E RULES WHEN ENCOUNTERING VESSELS There are three main situations which you may encounter with other vessels which could lead to a collision unless the Steer- ing Rules are followed: Meeting (you are approaching another vessel head-on) Crossing (you are traveling across the other vessel’s path) Overtaking (you are passing or being passed by a[...]

1-9 E its course and speed. You must stay out of its way until you are clear of it. Like- wise, if another vessel is passing you, you should maintain your speed and direction so that the other vessel can steer itself around you. OTHER SPECIAL SITUATIONS There are three other rules you should be aware of when driving your boat around other vessels. [...]

1-10 E 1 1 A 1 1 Proceeding toward head of navigation from seaward CAN BUOY Odd number. Leave to port. OR SECONDARY CHANNEL BUOYS STARTS NEW NUMBERING SYSTEM old new C " 1 " NUN BUOY Even number. Leave to starboard N " 2 " No change BUOY COLOR CODE BLACK RED GREEN " A " " 2 " " 1 " " 3 " &[...]

1-11 E EMU00016 FUELING INSTRUCTIONS w GASOLINE AND ITS VAPORS ARE HIGH- LY FLAMMABLE AND EXPLOSIVE! 8 Do not smoke when refueling, and keep away from sparks, flames, or other sources of ignition. 8 Stop engine before refueling. 8 Refuel in a well-ventilated area. Refuel portable fuel tanks off the boat. 8 Take care not to spill gasoline. If gaso- [...]

1-12 E EMU01804 GASOLINE If knocking or pinging occurs, use a differ- ent brand of gasoline or premium unlead- ed fuel. Recommended gasoline: Regular unleaded gasoline with a minimum octane rating of 86 (Pump Octane Number) = (R+M)/2 EMU00027 Gasohol There are two types of gasohol: gasohol containing ethanol and that containing methanol. Gasohol co[...]

1-13 E EMU01769 ENGINE OIL Recommended engine oil: 4-stroke motor oil with a combination of corresponding SAE and API as shown in the chart. c C All 4-stroke engines are shipped from the factory without engine oil. Engine oil quantity: See Chapter 4, “Specifications.” 001162 SAE API SE SF SG SH SJ 10W-30 10W-40 65W-9-16-1 3/15/02 5:11 PM Page 1[...]

1-14 E EMU01775 BA TTERY REQUIREMENT c C Do not use a battery that does not meet the specified capacity. If a battery which does not meet specifications is used, the electric system could perform poorly or be overloaded, causing electric system damage. For electric start models, choose a battery which meets the following specifications. EMU01859 Mi[...]

1-15 E EMU01395 PROPELLER SELECTION The performance of your outboard motor will be critically affected by your choice of propeller, as an incorrect choice could adversely affect performance and could also seriously damage the motor. Engine speed depends on the propeller size and boat load. If engine speed is too high or too low for good engine perf[...]

1-16 E EMU01209 ST ART -IN-GEAR PROTECTION Yamaha outboard motors or Yamaha approved remote control units are equipped with start-in-gear protection device(s). This feature permits the engine to be started only when it is Neutral. Always select Neutral before starting the engine. 1 Propeller diameter (in inches) 2 Propeller pitch (in inches) 3 Type[...]

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E EMU00037 Chapter 2 BASIC COMPONENTS MAIN COMPONENTS ..............................2-1 OPERATIONS OF CONTROLS AND OTHER FUNCTIONS ................................2-2 Fuel tank .................................................2-2 Gear shift lever ......................................2-3 Recoil starter handle .............................2-3 Starte[...]

!1 !2 !3 !4 !5 !9 !7 !8 !6 @0 @1 q w e r t o i !0 u y @2 @3 @4 E 2-1 EMU01206 MAIN COMPONENTS 1 Top cowling 2 Top cowling lock lever 3 Oil drain bolt 4 Anti-cavitation plate 5 Trim tab 6 Propeller 7 Cooling water inlet 8 Trim angle adjusting rod 9 Clamp bracket * 0 Power trim and tilt switch * q Starter button * w Recoil starter handle * e Warning [...]

E 2-2 q w r 902051 e EMU00039 OPERA TIONS OF CONTROLS AND OTHER FUNCTIONS EMU00040 FUEL TANK If your model was equipped with a portable fuel tank, its function is as fol- lows. 1 Fuel hose joint 2 Fuel meter (If equipped) 3 Fuel tank cap 4 Air vent screw (If equipped) EMU00042 Fuel Hose Joint This connector is provided for connecting or disconnecti[...]

E 2-3 101043** q w e r EMU00059 RECOIL STARTER HANDLE (If equipped) Pull the handle gently until resistance is felt. Then vigorously pull the handle straight out to crank the engine to start it. EMU00064 TILLER HANDLE (for Tiller control model) Moving the tiller handle sideways to adjust the steering direction. In addition, this handle contains the[...]

E 2-4 EMU00067 Throttle Indicator The fuel consumption curve on the throt- tle indicator shows the relative amount of fuel consumed for each throttle position. Choose the setting that offers the best performance and fuel economy for the desired operation. 1 Throttle indicator EMU01294 Throttle Friction Adjusting Knob A friction device in the tiller[...]

E 2-5 EMU00932 Engine Stop Lanyard Switch The lock-plate 1 must be attached to the engine stop lanyard switch for the engine to run. The lanyard 2 should be attached to a secure place on the operator’s cloth- ing, or arm or leg. Should the operator fall overboard or leave the helm, the lanyard will pull out the lock plate, stopping igni- tion to [...]

E 2-6 EMU00098* Remote Control Lever Moving the lever forward from the Neutral position engages Forward gear. Pulling the lever back from Neutral engages Reverse. The engine will contin- ue to run at idle until the lever is moved about 35° (a detent can be felt). Moving the lever further opens the throttle, and the engine will begin to accelerate.[...]

E 2-7 EMU00100 Neutral Throttle Lever To open the throttle without shifting into either Forward or Reverse, place the remote control lever in the Neutral posi- tion and lift the neutral throttle lever. NOTE: The neutral throttle lever will operate only when the remote control lever is in Neutral. The remote control lever will operate only when the [...]

E 2-8 EMU00934 Engine Stop Lanyard Switch The lock-plate 1 must be attached to the engine stop lanyard switch for the engine to run. The lanyard 2 should be attached to a secure place on the operator’s cloth- ing, or arm or leg. Should the operator fall overboard or leave the helm, the lanyard will pull out the lock plate, stopping igni- tion to [...]

E 2-9 EMU01331 Power Trim/Tilt Switch The power trim/tilt adjusts the motor angle in relation to the transom. The power trim/tilt switch is located on the remote control lever grip. Pushing the switch “UP” trims the motor up, then tilts the motor up. Pressing the switch “DN” tilts the motor down and trims the motor down. When the switch but[...]

E 2-10 408026 EMU00110* STEERING FRICTION ADJUSTING LEVER A friction device provides resesistance steering movement. This is adjustable for operator preference. w Do not overtighten the friction adjusting lever. If there is too much resistance, it may be difficult to steer, which could result in an accident. Resistance Lever Increase Turn clockwise[...]

E 2-11 q w 603013* A B EMU00114 TRIM TAB The trim tab should be adjusted so that the steering control can be turned to either the right or left by applying the same amount of force. w An improperly adjusted trim tab may cause difficult steering. Always test run after the trim tab has been installed or replaced to be sure steering is correct. Be sur[...]

E 2-12 EMU00113* TRIM TAB FT25 The trim tab should be adjusted so that the steering control can be turned to either the right or left by applying the same amount of force. w An improperly adjusted trim tab may cause difficult steering. Always test run after the trim tab has been installed or replaced to be sure steering is correct. Be sure you have[...]

E 2-13 EMU01125 POWER TRIM/TILT SWITCH The power trim/tilt adjusts the motor angle in relation to the transom. The power trim/tilt switch is located on the side of the bottom engine cowling. Pushing the switch “UP” trims the motor up, then tilts the motor up. Pressing the switch “DN” tilts the motor down and trims the motor down. When the s[...]

E 2-14 EMU01128 WARNING INDICATOR(S) If the engine develops a condition moni- tored by the warning system, an indicator will come on. Refer to the “WARNING SYSTEM” sec- tion for details. 1 Warning indicator(s) 223012 q q t w r 001081 e y u 001085 001058 EMU01617 DIGITAL TACHOMETER This gauge contains the tachometer, trim meter, hour meter, low [...]

E 2-15 001059 001088 EMU01109 Trim Meter This meter shows the trim angle of your outboard motor. NOTE: 8 Memorize the trim angles that work best for your boat under different condi- tions. Adjust the trim angle to the desired setting by operating the power trim and tilt switch. 8 If the trim angle of your motor exceeds the trim operating range, the[...]

E 2-16 001060 q 001061 q EMU01110 Low Oil Pressure Warning Indicator If oil pressure drops too low, the warning indicator will start to blink. Refer to the section “LOW OIL PRESSURE WARNING” for details. 1 Low oil pressure warning indicator c C 8 Do not operate the engine without oil. Serious engine damage will occur. 8 The low oil pressure war[...]

E EMU00162 TOP COWLING LOCK LEVER To remove the engine top cowling, turn the lock lever. Then lift off the cowling. When replacing the cowling, check to be sure it fits properly in the rubber seal. Then lock the cowling again by moving the lever upward. 1 Top cowling lock lever 301044 q EMU00156 TILT SUPPORT BAR The tilt support bar 1 keeps the out[...]

E 2-18 101043* q EMU01146 FLUSHING DEVICE This device 1 is used to clean the cooling water passages of the motor using a gar- den hose and tap water. NOTE: Refer to “Cleaning Cooling-water Passages” in Chapter 4 for instructions on usage. 65W-9-16-2 3/15/02 5:12 PM Page 19[...]

E 2-19 EMU00169 W ARNING SYSTEM c C Do not continue to operate the engine if the warning device has activated. Consult your Yamaha dealer if the problem can- not be located and corrected. EMU01476 OVERHEAT WARNING This engine has an overheat warning device. If the engine temperature rises too high, the warning device will activate. ( 1 ) ; Included[...]

E 2-20 EMU00173 LOW OIL PRESSURE WARNING If oil pressure drops too low, the warning device will activate. ( 1 ):Included (–):N/A If the warning system has been activated, stop the engine as soon as it is safe to do so. Check oil level and add oil as needed. If the oil level is correct, consult your Yamaha dealer. c C Do not continue to run the en[...]

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E EMU00174 Chapter 3 OPERA TION INSTALLATION ........................................3-1 Mounting the outboard motor ............3-2 Clamping the outboard motor .............3-4 BREAKING IN (RUNNING IN) ENGINE ..3-5 PRE-OPERATION CHECKS ......................3-6 Checking the engine oil level ...............3-7 FILLING FUEL .........................[...]

E 3-1 EMU00175 INST ALLA TION c C Incorrect engine height or obstructions to smooth water flow (such as the design or condition of the boat or accessories such as transom ladders/depth finder trans- ducers) can create airborne water spray while the boat is cruising. Severe engine damage may result if the motor is operat- ed continuously in the pres[...]

E 3-2 EMU00176 MOUNTING THE OUTBOARD MOTOR w Improper mounting of the outboard motor could result in hazardous condi- tions such as poor handling, loss of con- trol, or fire hazards. Observe the follow- ing: 8 The information presented in this sec- tion is intended as reference only. It is not possible to provide complete instructions for every pos[...]

E 3-3 w Overpowering a boat may cause severe instability. Do not install an outboard motor with more horsepower than the maximum rating on the capacity plate of the boat. If the boat does not have a capacity plate, consult the boat manufac- turer. EMU01298 Mounting Height To run your boat at optimum efficiency, the water-resistance (drag) of the bo[...]

E 3-4 EMU01318 CLAMPING THE OUTBOARD MOTOR Manual tilt model 1) Place the outboard on the transom so that it is positioned as close to the center as possible. Tighten the tran- som clamp screws evenly and secure- ly. Check the clamp-screws for tight- ness occasionally during operation of the motor as they can work loose due to engine vibration. w L[...]

E 3-5 EMU00233 Run the engine under load (in gear with a propeller installed) as follows. 1) For the first hour of operation: Run the engine at 2,000 r/min or at approximately half throttle. 2) For the second hour of operation: Run the engine at 3,000 r/min or at approximately three-quarter throttle, and during this period run it at full throttle f[...]

E 3-6 EMU00204 PRE-OPERA TION CHECKS w If any item in the pre-operation check is not working properly, have it inspected and repaired before operating the out - board motor. Otherwise, an accident could occur. c C Do not start the engine out of water. Overheating and serious engine damage can occur. EMU00206 Fuel 8 Check to be sure you have plenty [...]

E 3-7 EMU00209 Controls 8 Check throttle, shift, and steering for proper operation before starting the engine. 8 The controls should work smoothly, without binding or unusual free play. 8 Look for loose or damaged connec- tions. 8 Check operation of the starter and stop switches when the outboard motor is in the water. EMU00210 Engine 8 Check the e[...]

E 3-8 902055 EMU00202 FILLING FUEL 1) Remove the fuel tank cap. 2) Fill the fuel tank carefully. 3) Close the cap securely after refueling. Wipe up any spilled fuel. EMU00203 Ring Free Fuel Additive Gasoline is a precise blend of many differ- ent substances, each chosen to give cer- tain characteristics. Gasoline blends have been changing in recent[...]

E 3-9 304042 902061 902025 EMU01147 ST ARTING ENGINE w 8 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. 8 When the air vent screw is loosened, gasoline (petrol) vapor will be released. Gasoline (petrol) is highly flammable, [...]

E 3-10 N START START 000648 EMU01497 PROCEDURE FOR TILLER CONTROL MODEL 4) Place the gear-shift lever in the neu- tral position. NOTE: The start-in-gear protection device pre- vents the engine from starting except when in Neutral. 5) Attach the engine stop switch lanyard to a secure place on your clothing, or your arm or leg. Then, install the lock[...]

E 3-11 EMU01005 Manual Start Model 7 ) Pull the starter handle slowly until you feel resistance. Then, give a strong pull straight out to crank and start the engine. Repeat it, if neces- sary. NOTE: If the warm engine fails to start, open the throttle slightly and try to start the engine. 8 ) After the engine starts, return the starter handle slowl[...]

E 3-12 N 701015 000293 EMU00247 PROCEDURE FOR REMOTE CONTROL MODEL 4) Place the remote control lever in the Neutral position. NOTE: The start-in-gear protection device pre- vents the engine from starting except when in Neutral. 5) Attach the engine stop switch lanyard to a secure place on your clothing, or your arm or leg. Then, install the lock pl[...]

E 3-13 ON START OFF 701022 EMU00949 Electric Start Model 7 ) Turn the main switch to “START”, and hold it for a maximum of 5 sec- onds. 8) Immediately after the engine starts, release the main switch to return it to “ON”. c C 8 Do not turn the main switch to “START” when the engine is running. 8 Do not keep the starter-motor turning for[...]

E 3-14 309016 EMU00258 W ARMING UP ENGINE 1) Before beginning operation, allow the engine to warm up at idling speed for 3 minutes. (Failure to do this will shorten engine life.) 2) Be sure the low oil pressure warning indicator goes off after starting the engine. 3) Check for a steady flow of water from the cooling-water pilot hole. c C 8 If the l[...]

E 3-15 EMU00261 SHIFTING w Before shifting, make sure there are no swimmers or obstacles in the water near you. c C To change the shifting position from for- ward to reverse or vice-versa, close the throttle first so that the engine idles (or runs at low speeds). START N F 701043 N F EMU00265 FORWARD Tiller control model 1) Place the throttle contr[...]

E 3-16 EMU01326 REVERSE w When operating in Reverse, go slowly. Do not open the throttle more than half. Otherwise, the boat may become unsta- ble, which could result in loss of control and an accident. 1) Place the throttle control grip in the fully closed position (for Tiller control model). 2 ) Check that the tilt-lock lever (for Manual tilt/Hyd[...]

E 3-17 506021 EMU00273 STOPPING ENGINE Let it cool off for a few minutes at idle or low speed first. Stopping the engine immediately after operating at high speed is not recommended. 304043 902052 ON START OFF 701023 EMU00277 1) Push and hold the engine stop button or turn the main switch to “OFF”. 2) If the fuel joints are provided, discon- ne[...]

E 3-18 EMU01412 TRIMMING OUTBOARD MOTOR The trim angle of the outboard motor helps determine the position of the bow of the boat in the water. The correct trim angle will help improve performance and fuel economy while reducing strain on the engine. The correct trim angle depends upon the combination of boat, engine, and propeller. Correct trim is [...]

E 3-19 ADJUSTING TRIM ANGLE 404012* q EMU00951* Manual tilt model There are 4 or 5 holes provided in the clamp bracket to adjust the outboard motor trim angle. 1) Stop the engine. 2) Remove the trim angle adjusting rod 1 from the clamp bracket while tilting the motor up slightly. 3) Reposition the rod in the desired hole. To raise the bow (“trim-[...]

E 3-20 EMU01401 Power Trim/Tilt Model w 8 Be sure all people are clear of the out- board motor when adjusting the trim/tilt angle, also be careful not to pinch any body parts between the drive unit and clamp bracket. 8 Use caution when trying a trim position for the first time. Increase speed gradu- ally and watch for any signs of instabili- ty or [...]

E 3-21 EMU00282 Bow Up When the boat is on plane, a bow-up atti- tude result in less drag, greater stability and efficiency. This is generally when the keel line of the boat is up about 3 to 5 degrees. When trimmed out, the boat may have more tendency to steer to one side or the other. Compensate for this as you steer. The trim tab can also be adju[...]

E 3-22 EMU00285 TIL TING UP/DOWN If the engine will be stopped for some time, or if the boat is moored in shallows, the engine should be tilted up to protect the propeller and casing from damage by collision with obstructions, and also to reduce salt corrosion. c C 8 Before tilting the motor, follow the pro- cedures under “STOPPING ENGINE”. Nev[...]

E 3-23 EMU00290 PROCEDURE FOR TILTING UP Manual tilt model 1) Place the gear shift lever in Neutral. 2) Remove the fuel line connection from the motor. 3) Place the tilt lock lever in the release position. 4) Hold the rear of the top cowling with one hand and fully tilt the engine up. 5 ) The tilt support bar turns to the locked position automatica[...]

E 3-24 EMU00296 PROCEDURE FOR TILTING UP Power trim/tilt model 1) Remove the fuel-line connection from the motor. 3 ) Push the tilt support knob into the clamp bracket to support the engine. w After tilting the engine, be sure to sup- port it with the tilt support knob. Otherwise, the engine could fall back down suddenly if oil in the power trim/ti[...]

E 3-25 000911 EMU00306 CRUISING IN SHALLOW W A TER Manual tilt model The outboard motor can be tilted up par- tially to allow operation in shallow water. w 8 Place the gear shift in the Neutral posi- tion before using the shallow water cruising system. 8 Run the boat at the lowest possible speed when using the shallow water cruising system. The til[...]

E 3-26 403051 EMU00310 PROCEDURE 1) Place the gear shift lever in the neu- tral position. 402071 N 402074 2) Place the tilt lock lever in the release position. 3 ) Slightly tilt up the engine. The tilt- support bar will lock automatically, supporting the engine in a partially raised position. NOTE: This motor has 2 positions for shallow water cruis[...]

E 3-27 EMU00316 CRUISING IN OTHER CONDITIONS CRUISING IN SALT WATER After operating in salt water, wash out the cooling-water passages with fresh water to prevent them from becoming clogged- up with salt deposits. NOTE: Refer to cooling system flushing instruc - tions in “TRANSPORTING AND STORING OUTBOARD MOTOR”. CRUISING IN TURBID WATER It is [...]

E EMU00317 Chapter 4 MAINTENANCE SPECIFICATIONS .....................................4-1 TRANSPORTING AND STORING OUTBOARD MOTOR ...............................4-4 Trailering outboard motor ...................4-4 Storing outboard motor .......................4-5 PERIODIC MAINTENANCE ....................4-10 Replacement parts .......................[...]

E 4-1 EMU00322* SPECIFICA TIONS Model Unit F25MHB Item 18 (1.8, 13) 35 (3.5, 25) 28 (2.8, 20) 18 (1.8, 13) Spark plug N·m (kgf·m, lb·ft) Propeller nut N·m (kgf·m, lb·ft) Engine oil drain bolt N·m (kgf·m, lb·ft) Engine oil filter N·m (kgf·m, lb·ft) DIMENSIONS PERFORMANCE Overall Length mm (in.) Overall Width mm (in.) Overall Height S/L/X[...]

E 4-2 F25EHB F25ERB F25TRB 18 (1.8, 13) 35 (3.5, 25) 28 (2.8, 20) 18 (1.8, 13) 18 (1.8, 13) 35 (3.5, 25) 28 (2.8, 20) 18 (1.8, 13) 1,151 (45.3) 430 (16.9) 1,148 (45.2)/1,275 (50.2)/1,354 (53.3) 423 (16.7)/550 (21.7)/636 (25.0) 66 (146)/68 (150)/70 (154) 703 (27.7) 376 (14.8) 1,148 (45.2)/1,275 (50.2)/— 423 (16.7)/550 (21.7)/— 65 (143)/67 (148)/[...]

E 4-3 EMU00322* SPECIFICA TIONS Model Unit T25TRB Item 18 (1.8, 13) 35 (3.5, 25) 28 (2.8, 20) 18 (1.8, 13) Spark plug N·m (kgf·m, lb·ft) Propeller nut N·m (kgf·m, lb·ft) Engine oil drain bolt N·m (kgf·m, lb·ft) Engine oil filter N·m (kgf·m, lb·ft) DIMENSIONS PERFORMANCE Overall Length mm (in.) Overall Width mm (in.) Overall Height S/L/X[...]

E 4-4 EMU00326 TRAILERING OUTBOARD MOTOR The motor should be trailered and stored in the normal running position. If there is insufficient road clearance in this position, then trailer the motor in the tilt position using a motor support device such as a transom saver bar. For further details, consult your Yamaha dealer. w 8 Never get under the low[...]

E 4-5 EMU00330 STORING OUTBOARD MOTOR When storing your Yamaha outboard for prolonged periods of time, (2 months or longer), several important procedures must be performed to prevent expensive damage. It is advisable to have your outboard ser- viced by an authorized Yamaha dealer prior to storage. However, the following procedures can be performed [...]

E 4-6 EMU00338 Flushing Cooling System and Fogging Engine Cooling system flushing is essential to prevent the cooling system from clogging up with salt, sand, or dirt. In addition, fog- ging of the engine is mandatory to pre- vent expensive engine damage due to rust. Perform the flushing and fogging at the same time. w 8 Do not touch or remove elec[...]

E 4-7 605024 q w 605014* q 6 ) Remove the motor from the water tank. 7 ) Install the silencer cover and top cowling. 1 Water surface 2 Lowest water level EMU00342 8 Flushing with the Flushing Attachment c C Avoid running the outboard at high speed while on the flushing attachment, or overheating could occur. 1) Remove the top cowling and the pro- p[...]

E 4-8 EMU00349 Lubrication 1 ) Remove the spark plug(s). Spray a Yamaha “Stor-Rite Engine Fogging Oil” into each cylinder for 10 seconds. Grease the spark plug threads and reinstall the spark plug(s) and torque to proper specification. (Refer to the “CLEANING AND ADJUSTING SPARK PLUG”). 2 ) Turn the engine over with the stop lanyard disconn[...]

E 4-9 EMU00353 Battery Care w Battery electrolyte is poisonous and dan- gerous, causing severe burns, etc. It con- tains sulfuric acid. Avoid contact with skin, eyes, or clothing. Antidote: EXTERNAL; Flush with water. INTERNAL; Drink large quantities of water or milk. Follow with milk of mag- nesia, beaten egg, or vegetable oil. Call physician imme[...]

E 4-10 EMU01569 PERIODIC MAINTENANCE w Be sure to turn off the engine when you perform maintenance unless otherwise specified. If the owner is not familiar with machine servicing, this work should be done by a Yamaha dealer or other quali- fied mechanic. Maintenance, replacement, or repair of the emission control devices and systems may be performe[...]

E 4-11 Spark plug Cleaning/Adjustment/ ●●● 4-14 Replacement Greasing points Greasing ● 4-12 Gear oil Change ●● 4-26 Fuel system Inspection ● 4-16 Fuel filter Inspection/Replacement ●●● 4-17 Fuel tank Cleaning ● 4-28 Idling speed Adjustment ●● 4-18 Anode Inspection/Replacement 11 4-29 Outboard motor exterior Inspection ●?[...]

E 4-12 EMU00366 GREASING Yamaha marine grease (Water resistant grease) 65W-9-16-4 3/15/02 5:16 PM Page 13[...]

E 4-13 103182 EMU00366 GREASING Yamaha marine grease (Water resistant grease) 65W-9-16-4 3/15/02 5:16 PM Page 14[...]

E 4-14 EMU01202 CLEANING AND ADJUSTING SPARK PLUG w When removing or installing a spark plug, be careful not to damage the insulator. A damaged insulator could allow external sparks, which could lead to explosion or fire. The spark plug is an important engine component and is easy to inspect. The condition of the spark plug can indicate something a[...]

E 4-15 When fitting the plug, always clean the gasket surface and use a new gasket. Wipe off any dirt from the threads and screw in the spark plug to the correct torque. NOTE: If a torque-wrench is not available when you are fitting a spark plug, a good esti- mate of the correct torque is 1/4 to 1/2 a turn past finger-tight. Have the spark plug adj[...]

E 4-16 EMU00369 CHECKING FUEL SYSTEM w Gasoline (petrol) and its vapors are highly flammable and explosive. Keep away from sparks, cigarettes, flames or other sources of ignition. Check the fuel line for leaks, cracks, or malfunctions. If any problem is found, it should be repaired immediately by Yamaha dealer or other qualified mechan- ic. Checkin[...]

E 4-17 EMU00370 INSPECTING FUEL FILTER w Gasoline (petrol) is highly flammable, and its vapors are flammable and explosive. 8 If you have any question about properly doing this procedure, consult your Yamaha dealer. 8 Do not perform this procedure on a hot or running engine. Allow the engine to cool. 8 There will be fuel in the fuel filter. Keep aw[...]

E 4-18 EMU00991 ADJUSTING IDLING SPEED w 8 Do not touch or remove electrical parts when starting or during operation. 8 Keep hands, hair and clothes away from flywheel and other rotating parts while engine is running. c C This procedure must be performed while the outboard motor is in the water. A flushing attachment or test tank can be used. A dia[...]

E EMU01415 CHANGING ENGINE OIL w 8 Avoid draining the engine oil immedi- ately after stopping the engine. The oil is hot and should be handled with care to avoid burns. 8 Be sure the outboard is securely fas- tened to the transom or a stable stand. c C 8 Change the engine oil after the first 10 hours of operation, and every 100 hours or at 6-month [...]

E 4-20 NOTE: If a torque wrench is not available when you are installing the drain plug, finger tighten the bolt just until the gasket comes into contact with the surface of the drain hole. Then tighten 1/4 - 1/2 turn. Have the drain plug torqued to the correct value with a torque wrench as soon as possible. 4) Remove the oil filler cap 2 . Add the[...]

E 4-21 NOTE: 8 For disposal of used oil consult your Yamaha dealer. 8 The oil should be changed more often when the engine is operated under adverse conditions such as extended trolling. 206013 EMU00380* CHECKING TIMING BELT Inspect the timing-belt and replace it if any of the following signs is observed: 8 Cracks in the back of the belt or in the [...]

E 4-22 205044 q w 413014 EMU01329 REPLACING FUSE If the fuse has blown on an Electric start model, open the fuse holder and replace the fuse with a new one of proper amper- age. w Be sure to use the specified fuse. An incorrect fuse or a piece of wire may allow excessive current flow. This could cause electrical system damage and a fire hazard. NOT[...]

E 4-23 EMU00992 CHECKING POWER TRIM AND TILT SYSTEM w 8 Never get under the lower unit while it is tilted, even when the tilt-support lever is locked. Severe injury could occur if the outboard accidentally falls. 8 Make sure no one is under the out - board before performing this test. 1) Check the power trim and tilt unit for any sign of oil leaks.[...]

E 4-24 EMU00388 CHECKING PROPELLER w You could be seriously injured if the engine accidentally starts while you are near the propeller. 8 Before inspecting, removing or installing the propeller, remove the spark plug caps from the spark plugs. Also, put the shift control in Neutral, put the main switch in the “OFF” posi- tion and remove the key[...]

E 4-25 EMU00397 Installing the Propeller c C 8 Be sure to install the thrust washer before installing propeller, otherwise, lower case and propeller boss may be damaged. 8 Be sure to use a new cotter pin and bend the ends over securely. Otherwise, the propeller could come off during operation and be lost. 1 ) Apply Yamaha Marine grease or Corrosion[...]

E 4-26 EMU01460 CHANGING GEAR OIL w 8 Be sure the outboard is securely fas- tened to the transom or a stable stand. You could be severely injured if the out- board falls on you. 8 Never get under the lower unit while it is tilted, even when the tilt-support lever/knob is locked. Severe injury could occur if the outboard accidentally falls. 1) Tilt [...]

E 4-27 601022 3) Remove the oil drain plug 1 . NOTE: The oil drain plug is magnetic. Remove all metal particles from the plug before rein- stalling it. 4) Remove the oil level plug 2 to allow the oil to drain completely. c C Inspect the used oil after it has been drained. If the oil is milky, water is get- ting into the gear-case which can cause ge[...]

E 4-28 EMU00402 Cleaning the Fuel Filter 1) Remove the screws holding the fuel hose joint assembly . Pull the assem- bly out of the tank. 2) Clean the filter (located on the end of the suction pipe) in a suitable clean - ing solvent. Allow the filter to dry. 3) Replace the gasket with a new one. Reinstall the fuel hose joint assembly and tighten th[...]

E 4-29 604024 405014 EMU00831 INSPECTING AND REPLACING ANODE(S) Yamaha outboard motor is protected from corrosion by a sacrificial anode(s). Check the anode(s) periodically. Remove the scales from surfaces of the anode(s). For the inspection and replacement of the anode(s), consult a Yamaha dealer. c C Do not paint the anode(s), for this would rend[...]

E 4-30 EMU00404 CHECKING BATTERY (for Electric start model) w Battery electrolytic fluid is dangerous; it contains sulfuric acid and therefore is poi- sonous and highly caustic. Always follow these preventive mea- sures: 8 Avoid bodily contact with electrolytic fluid as it can cause severe burns or permanent eye injury. 8 Wear protective eye gear w[...]

E 4-31 EMU01279 Connecting the Battery w Mount the battery holder securely in a dry, well-ventilated, vibration-free loca- tion in the boat. Install a fully charged battery in the holder. c C 8 A poorly maintained battery will quick- ly deteriorate. 8 Ordinary tap-water contains minerals harmful to a battery, and should not be used for topping-up. [...]

E 4-32 UPPER LEVEL LOWER LEVEL 901012 q w e EMU01280 Disconnecting the Battery Disconnect the BLACK lead from the NEG- ATIVE (-) terminal first. Then disconnect the RED lead from the POSITIVE (+) termi- nal. EMU00408 CHECKING BOLTS AND NUTS 1) Check that bolts securing the cylinder head and engine and the nut securing the flywheel are tightened wit[...]

E 4-33 EMU01172 CLEANING COOLING-WATER PASSAGES Flushing device equipped model Perform this procedure right after opera- tion for the most thorough flushing. 1) After shutting off the engine, unscrew the garden-hose connector 2 from the fitting 1 on the bottom cowling. 2) Screw the garden-hose connector 2 onto a garden hose 3 which is con- nected t[...]

E 4-34 102025 EMU00409 MOTOR EXTERIOR EMU00410 Cleaning the Outboard Motor After use, wash the exterior of the out- board with fresh water. Flush the cooling system with fresh water. NOTE: Refer to Flushing Cooling System instruc- tions in “TRANSPORTING AND STORING OUTBOARD MOTOR”. EMU00412 Checking Painted Surface of Motor Check the motor for [...]

E -MEMO- 65W-9-16-4 3/15/02 5:16 PM Page 36[...]

E EMU00414 Chapter 5 TROUBLE RECOVERY TROUBLESHOOTING ..............................5-1 TEMPORARY ACTION IN EMERGENCY ............................................5-5 Impact damage .....................................5-5 Power trim/tilt will not operate ...........5-5 Starter will not operate ........................5-6 Treatment of submerged motor[...]

E 5-1 EMU01204¯ TROUBLESHOOTING A problem in the fuel, compression, or ignition systems can cause poor starting, loss of power, or other problems. The troubleshooting chart describes basic checks and possi- ble remedies. (This chart covers all Yamaha outboard motors. Therefore, some items may not apply to your model.) If your outboard motor requir[...]

E 5-2 C. Engine idles irregularly or stalls. Trouble Possible Cause Remedy 1. Spark plug(s) fouled or incorrect type. 2. Fuel system obstructed. 3. Fuel contaminated or stale. 4. Fuel filter clogged. 5. Failed ignition parts. 6. Warning system activated. 7. Spark plug gap incorrect. 8. Poor connections or damaged ignition wiring. 9. Specified engin[...]

E 5-3 D. Warning buzzer sounds or indicator lamp lights. Trouble Possible Cause Remedy 1. Cooling system clogged. 2. Engine oil level low. 3. Heat range of spark plug incorrect. 4. Specified engine oil not used. 5. Engine oil contaminated or deteriorated. 6. Oil filter clogged. 7. Oil feed/injection pump malfunctions. 8. Load on boat improperly dis[...]

E 5-4 Trouble Possible Cause Remedy 13. Poor connections or damaged ignition wiring. 14. Failed ignition parts. 15. Specified engine oil not used. 16. Thermostat faulty or clogged. 17. Air vent screw closed. 18. Fuel pump damaged. 19. Fuel joint connection incorrect. 20. Heat range of spark plug incorrect. 13. Check wires for wear or breaks. Tighte[...]

E 5-5 EMU00416 TEMPORARY ACTION IN EMERGENCY EMU01492 IMPACT DAMAGE w The outboard motor can be seriously damaged by a collision while operating or trailering. Damage could make the out- board motor unsafe to operate. If the outboard motor hits any object in the water, follow the procedure below. 1) Stop the engine immediately. 2 ) Inspect the cont[...]

E 5-6 EMU00423 STARTER WILL NOT OPERATE If the starter mechanism does not operate (engine cannot be cranked with the starter), the engine can be started with an emergency starter rope. w 8 Use this procedure only in an emer- gency and only to return to port for repairs. 8 When the emergency starter rope is used to start the engine, the start-in- ge[...]

E 5-7 208062 208061 q w e ON START OFF 506021*** EMU00961¯ Emergency Starting Engine 1) Remove the top cowling. 2) Remove the start-in-gear protection cable 1 from the starter after remov- ing the clip 2 and the screw 3 if the cable is equipped. 3 ) Remove the starter/flywheel cover after removing 4 bolts. Disconnect the leads for the warning indi[...]

E 5-8 208063 5 ) Insert the knotted end of the emer- gency starter rope into the notch in the flywheel rotor and wind the rope several turns clockwise. 6) Pull the rope slowly until resistance is felt. 7 ) Give a strong pull straight out to crank and start the engine. Repeat if necessary. 65W-9-16-5 3/22/02 4:28 PM Page 9[...]

E 5-9 EMU00446 TREATMENT OF SUBMERGED MOTOR If the outboard motor is submerged, immediately take it a Yamaha dealer. Otherwise, some corrosion may begin almost immediately. If you cannot immediately take the out - board motor to a Yamaha dealer, follow the procedure bellow for taking care to minimize engine damage. EMU00448 1 ) Thoroughly wash away[...]

E EMU00450 Chapter 6 INDEX INDEX ........................................................6-1 1 2 3 4 5 6 65W-9-16-6 3/15/02 5:19 PM Page 1[...]

E 6-1 EMU00451 INDEX A Adjusting idling speed ..........................4-18 Adjusting trim angle ..............................3-19 Air vent screw...........................................2-2 B Basic boating rules ..................................1-7 Battery care...............................................4-9 Battery requirement .............[...]

E 6-2 M Main components ....................................2-1 Main switch ..............................................2-7 Maintenance chart .................................4-11 Motor exterior ........................................4-34 Mounting height ......................................3-3 Mounting the outboard motor ...............3-2 N N[...]

EMU01599 IMPORT ANT WARRANTY INFORMA TION FOR U.S.A. AND CANADA Welcome to the Yamaha Family! Congratulations on the purchase of your new Yamaha marine power. Yamaha is commit- ted to exceptional customer satisfaction, and we want your ownership experience to be a satisfying one. Please read the following warranty information to help ensure satisfa[...]

5. Your warranty applies specifically to repairs made in the country of purchase. If your U.S.-purchased Yamaha needs warranty service while in Canada, or your Canadian pur- chased Yamaha needs service while in the United States, Yamaha will assist the local dealer whenever possible. However, some products available in one country may not be sold o[...]

EMU01404 Y AMAHA MOTOR CORPORA TION, U.S.A. FOUR-STROKE OUTBOARD MOTOR THREE-YEAR LIMITED W ARRANTY Yamaha Motor Corporation, U.S.A. hereby warrants that new Yamaha 1999-or-later model four-stroke outboard motors originally dis - tributed by Yamaha Motor Corporation, U.S.A. will be free from defects in material and workmanship for the period of tim[...]

SPECIFIC PARTS EXCLUDED FROM WARRANTY. Parts replaced due to normal wear or routine maintenance such as oil, spark plugs, shear pins, propellers, hubs, fuel and oil filters, brushes for the starter motor and power tilt motor, water pump impellers, and anodes, are not covered by warranty. Charges for removal of the motor from a boat and transporting[...]

CUSTOMER SERVICE If your machine requires warranty service, you must take it to any authorized Yamaha outboard dealer within the continental United States. Be sure to bring your warranty registration identification or other valid proof of the original date of purchase. If a question or problem arises regarding warranty, first contact the owner of t[...]

EMU01178 IMPORT ANT W ARRANTY INFORMA TION IF YOU USE YOUR Y AMAHA OUTSIDE U.S.A. OR CANADA Welcome to the Yamaha Family! Congratulations on the purchase of your new Yamaha marine power. Yamaha is com- mitted to exceptional customer satisfaction, and we want your ownership experience to be a satisfying one. Please read the following warranty inform[...]

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65W-9-16 hyoshi 4/18/02 3:15 PM Page 2 (2,1)[...]

Printed in Japan April 2002-0.5 × 0.1 ! 65W-28199-16 (F25AMH, F25AEH, F25AE, F25AET, FT25BET) (E) Printed on recycled paper OW N 65W-9-16 hyoshi 4/18/02 3:15 PM Page 1 (1,1)[...]

YAMAHA MOTOR CO., LTD. MADE IN JAPAN PAYS D'ORIGINE JAPON OUTBOARD MOTOR W ARRANTY REGISTRA TION ENREGISTREMENT DE LA GARANTIE DU MO TEUR HORS-BORD Please complete and mail this card. This information is necessary to accurately register your unit for warranty . V euillez signer ci-dessous pour attester que le montage et l’inspection ont ét?[...]

PLACE POST AGE HERE A T TN: W ARR ANT Y DEP ARTMENT Warranty card 2/27/02 11:47 AM Page 2[...]