- DL manuals
- Yamaha
- Outboard Motor
- F2.5C
- Owner's Manual
Yamaha F2.5C Owner's Manual
Summary of F2.5C
Page 1
Printed in japan april 2003-0.5 × 0.1 ! 65w-28199-17 (f25amh, f25aeh, f25ae, f25aet, ft25bet) (e) printed on recycled paper f25c t25c owner’s manual u.S.A.Edition lit-18626-05-46 65w-9-17 hyoshi 3/10/03 14:46 page 1.
Page 2
65w-9-17 hyoshi 3/10/03 14:46 page 2.
Page 3: To The Owner
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 oper...
Page 4: General Information
E general information basic components operation maintenance trouble recovery index read this owner’s manual carefully before operating your outboard motor. 1 2 3 4 5 6 emu00003 contents 65w-9-17-1 3/10/03 14:14 page 3.
Page 5: Chapter 1
E 2 3 4 5 6 emu00004 chapter 1 general information 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 ................
Page 6: Identification Numbers
E 1-1 emu00005 identification 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 you...
Page 7: Emission Control
E 1-2 q w emu01385 emission control information 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 atta...
Page 8
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 emissio...
Page 9: Safety
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, ...
Page 10
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....
Page 11: Important Labels
1-6 e emu00014 important 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 7be sure shift control is in neutral before starting engin...
Page 12: Basic Boating Rules
1-7 e emu00015 basic boating 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 ...
Page 13
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) ...
Page 14
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 awar...
Page 15
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" " 4" " 5" " 7" n ...
Page 16: Fueling Instructions
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 ...
Page 17
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 containin...
Page 18: Engine Oil
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 1...
Page 19: Battery Requirement
1-14 e emu01775 battery 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 whic...
Page 20: Propeller Selection
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...
Page 21: Start-In-Gear Protection
1-16 e emu01209 start-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 ...
Page 22: -Memo-
E -memo- 65w-9-17-1 3/10/03 14:14 page 22.
Page 23: Chapter 2
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 starte...
Page 24: Main Components
!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 sta...
Page 25: Operations of Controls
E 2-2 q w r 902051 e emu00039 operations 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 co...
Page 26
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 steerin...
Page 27
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 frict...
Page 28
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 ...
Page 29
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 t...
Page 30
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. Th...
Page 31
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 ...
Page 32
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...
Page 33
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 ...
Page 34
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 ...
Page 35
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 replace...
Page 36
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...
Page 37
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 contain...
Page 38
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 o...
Page 39
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...
Page 40
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 til...
Page 41
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-9-17-2 3/10/03 14:27 page 19.
Page 42: Warning System
E 2-19 emu00169 warning 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, t...
Page 43
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 ...
Page 44: -Memo-
E -memo- 65w-9-17-2 3/10/03 14:27 page 22.
Page 45: Chapter 3
E emu00174 chapter 3 operation 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.............
Page 46: Installation
E 3-1 emu00175 installation 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 ...
Page 47
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 possi...
Page 48
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...
Page 49
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 a...
Page 50: Breaking In (Running In)
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...
Page 51: Pre-Operation Checks
E 3-6 emu00204 pre-operation 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. E...
Page 52
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 mo...
Page 53: Filling Fuel
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 characteris...
Page 54: Starting Engine
E 3-9 304042 902061 001671 emu01147 starting 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 ...
Page 55
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 cl...
Page 56
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 th...
Page 57
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 cloth...
Page 58
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 n...
Page 59: Warming Up Engine
E 3-14 309016 emu00258 warming 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 ...
Page 60: Shifting
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 forwar...
Page 61
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) ch...
Page 62: Stopping Engine
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”. ...
Page 63: Trimming Outboard
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 combinatio...
Page 64
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 r...
Page 65
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-...
Page 66
E 3-21 emu19160 trim angle settings and boat handling when the boat is on plane, a bow-up atti- tude results in less drag, greater stability and efficiency. This is generally when the keel line of the boat is up about 3 to 5 degrees. With the bow up, the boat may have a greater tendency to steer to ...
Page 67: Tilting Up/down
E 3-22 emu00285 tilting 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 ...
Page 68
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 su...
Page 69
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 fa...
Page 70: Cruising In Shallow
E 3-25 000911 emu00306 cruising in shallow water 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 ...
Page 71
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: t...
Page 72: Cruising In Other
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 out...
Page 73: Chapter 4
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....................
Page 74: Specifications
E 4-1 emu00322* specifications model unit f25mhc 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.) overal...
Page 75
E 4-2 f25ehc f25erc f25trc 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) 423 (16.7)/550 (21.7) 66 (146)/68 (150) 703 (27.7) 376 (14.8) 1,148 (45.2)/1,275 (50.2) 423 (16.7)/550 (21.7) 65 (143)/...
Page 76: Specifications
E 4-3 emu00322* specifications model unit t25trc 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.) overal...
Page 77: Transporting and
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, consu...
Page 78
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. H...
Page 79
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...
Page 80
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...
Page 81
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 e...
Page 82
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,...
Page 83: Periodic Maintenance
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 em...
Page 84
E 4-11 emu19370 maintenance chart frequency of maintenance operations may be adjusted according to the operating con- ditions, but the following table gives general guidelines. Refer to the sections in this chapter for explanations of each owner-specific action. The mark ( ●) indicates the check-ups...
Page 85
E 4-12 emu00366 greasing yamaha marine grease (water resistant grease) 500 hours 1000 hours (2.5 years) (5 years) timing belt replacement 1 item actions every 65w-9-17-4 3/11/03 10:00 page 13.
Page 86
E 4-13 103182 emu00366 greasing yamaha marine grease (water resistant grease) 65w-9-17-4 3/11/03 10:00 page 14.
Page 87
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 co...
Page 88
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...
Page 89
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 ya...
Page 90
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...
Page 91
E 4-18 emu09912 inspecting 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 ...
Page 92
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 hour...
Page 93
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 ...
Page 94
E 205044 q w 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 electrica...
Page 95
E 4-22 413014 emu00383 checking wiring and connectors 1) check that each grounding wire is properly secured. 2) check that each connector is engaged securely. Emu00384 exhaust leakage start the engine and check that no exhaust leaks from the joints between the exhaust cover, cylinder head and crank ...
Page 96
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 po...
Page 97
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 swi...
Page 98
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...
Page 99
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 ...
Page 100
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 i...
Page 101
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. Rein...
Page 102
E 4-29 604024 405014 emu14622 inspecting and replacing anode(s) yamaha outboard motors are protected from corrosion by sacrificial anodes. Inspect the external anodes periodically. Remove scales from the surfaces of the anodes. Consult a yamaha dealer for replacement of external anodes. C c do not p...
Page 103
E 4-30 emu04041 checking battery (for electric start models) 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...
Page 104
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 ...
Page 105
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 a...
Page 106
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 conne...
Page 107
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...
Page 108: -Memo-
E -memo- 65w-9-17-4 3/11/03 10:00 page 36.
Page 109: Chapter 5
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 ..........
Page 110: Troubleshooting
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 ap...
Page 111
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 connecti...
Page 112
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...
Page 113
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 inc...
Page 114: Temporary Action In
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)...
Page 115
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 ...
Page 116
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 ...
Page 117
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-9-17-5 3...
Page 118
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...
Page 119: Chapter 6
E emu00450 chapter 6 index index ........................................................6-1 1 2 3 4 5 6 65w-9-17-6 3/10/03 16:02 page 1.
Page 120: Index
E 6-1 emu00451 index a adjusting trim angle ..............................3-19 air vent screw...........................................2-2 b basic boating rules ..................................1-7 battery care...............................................4-9 battery requirement ....................
Page 121
E 6-2 m main components ....................................2-1 main switch ..............................................2-7 maintenance chart .................................4-11 motor exterior ........................................4-34 mounting height ......................................3-3 ...
Page 122: Canada
Emu01599 important warranty information 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 follo...
Page 123
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 p...
Page 124: Four-Stroke Outboard Motor
Emu01404 yamaha motor corporation, u.S.A. Four-stroke outboard motor three-year limited warranty 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 ...
Page 125
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...
Page 126
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 arise...
Page 127
Emu01178 important warranty information if you use your yamaha 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 ...
Page 128: F25C
Printed in japan april 2003-0.5 × 0.1 ! 65w-28199-17 (f25amh, f25aeh, f25ae, f25aet, ft25bet) (e) printed on recycled paper f25c t25c owner’s manual u.S.A.Edition lit-18626-05-46 65w-9-17 hyoshi 3/10/03 14:46 page 1.
Page 129
Yamaha motor co., ltd. Made in japan pays d'origine japon outboard motor warranty registration enregistrement de la garantie du moteur hors-bord please complete and mail this card. This information is necessary to accurately register your unit for warranty. Veuillez signer ci-dessous pour attester q...
Page 130: Attn: Warranty Department
Place postage here attn: warranty department warranty card 2/27/02 11:47 am page 2.