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Yamaha F15A Owner's Manual

Other manuals for F15A: Service Manual, Owner's Manual

Summary of F15A

  • Page 1

    F15a paper lit-18626-04-69 f15a owner’s manual u.S.A.Edition 66m-9-15-hyoshi 01.5.10 10:48 am y [ w 1 (2,1).

  • Page 2

    66m-9-15-hyoshi 01.5.10 10:48 am y [ w 2 (1,1).

  • Page 3: To The Owner

    E thank you for choosing a yamaha out- board motor. This owner’s manual con- tains information needed for proper oper- ation, maintenance and care. A thorough understanding of these simple instruc- tions will help you obtain maximum enjoyment from your new yamaha. If you have any question about the ...

  • Page 4

    66m-9-15-1 5/10/01 9:39 am page 2.

  • Page 5: 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 ema20010 contents 66m-9-15-1 5/10/01 9:39 am page 3.

  • Page 6

    66m-9-15-1 5/10/01 9:39 am page 4.

  • Page 7: Chapter 1

    Emb00010 chapter 1 general information identification numbers record ..1-1 outboard motor serial number ...........1-1 emission control information...1-2 star labels ..............................................1-3 safety information..........................1-4 important labels ......................

  • Page 8: Identification Numbers

    1-1 emb10011 identification numbers record emb10210 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 ...

  • Page 9: Emission Control

    1-2 e 504**2 q w emu01385 emission control information emu01387 north american models this engine conforms to u.S. Environmental protection agency (epa) regulations for marine si engines. See the label affixed to your engine for details. Approval label of emission control certificate this label is a...

  • Page 10

    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 11: Safety

    E 1-4 emu00917 safety information 8 before mounting or operating the out- board motor, read this entire manual. Reading it should give you an under- standing of the motor and its operation. 8 before operating the boat, read any owner’s or operator’s manuals supplied with it and all labels. Be sure y...

  • Page 12

    E 1-5 8 when a swimmer is in the water near you shift into neutral and shut off the engine. 8 be informed about boating safety. Additional publications and information can be obtained from many organiza- tions, including the following: united states coast guard consumer affairs staff (g-bc) office o...

  • Page 13: Important Labels

    E 1-6 emb30011 important labels warning labels 1 2 caution labels 3 202**1 q w e 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 ● be sure shift control is in neutral before starting engin...

  • Page 14: Basic Boating Rules

    E 1-7 emb40010 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 15

    E 1-8 rules when encountering vessels there are three main situations which you may encounter with other vessels which could lead to a collision unless the steering rules are followed: meeting (you are approaching another vessel head-on) crossing (you are travelling across the other vessel’s path) o...

  • Page 16

    E 1-9 its course and speed. You must stay out of its way until you are clear of it. Likewise, 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 ...

  • Page 17

    E 1-10 letters and orange boarders. They signify speed zones, restricted areas, danger areas, and general information. Remember, markings may vary by geo- graphic location. Always consult local boating authorities before driving your boat in unfamiliar waters. 1 1 1 a 1 1 1 proceeding toward head of...

  • Page 18: Fueling Instructions

    E 1-11 emb01010 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 19

    E 1-12 emu00025 gasoline (petrol) if knocking or pinging occurs, use a differ- ent brand of gasoline or premium unlead- ed fuel. If unleaded gasoline is not avail- able, then leaded regular gasoline can be used. If leaded gasoline is usually used, engine valves and related parts should be inspected ...

  • Page 20: Engine Oil

    Emu01149 engine oil recommended engine oil; use a combination of corresponding sae and api shown in the chart below; c c all four-stroke engines are shipped from the factory without engine oil. Note: if the recommended engine oil is not available, then a multigrade type engine oil such as sf-cc/cd,s...

  • Page 21: Battery Requirement

    E 1-14 emu01430¯ battery requirement c c do not use a battery that does not meet the specified capacity. If a battery which differs from the specification is used, the electrical system may perform poorly or be overloaded, causing electrical system damage. C c 8 a battery cannot be connected to mod-...

  • Page 22

    E 1-15 yamaha outboard motors are fitted with propellers 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. For a greater operating load, a smaller-pitch propeller is more suitable as it enables the correct e...

  • Page 23: Start-In-Gear Protection

    E 1-16 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. 66m-9-15-1 5/10/01 9:...

  • Page 24: -Memo-

    E -memo- 66m-9-15-1 5/10/01 9:39 am page 22.

  • Page 25: Chapter 2

    Emc00010 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 choke knob .......

  • Page 26: Main Components

    2-1 e 101121 q w r i u y e t 701061 !6 000934 !0 !2 !3 !4 !1 !5 !7 !8 !9 o @2 @1 @0 000944 emu01206 main components 1 top cowling 2 top cowling lock lever 3 oil drain bolt 4 anti-cavitation plate 5 propeller 6 cooling water inlet 7 trim angle adjusting rod 8 clamp bracket * 9 recoil starter handle 0...

  • Page 27: Operations of Controls

    E 2-2 emc20010 operations of controls and other functions emc21012 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) emc31010 fuel hose joint this connector is provid...

  • Page 28

    2-3 emc25010 gear shift lever (for tiller control model) turning the gear-shift lever towards you engages the clutch with the forward gear so that the boat moves ahead. Turning the lever away from you engages the reverse gear so that the boat moves astern. 1 neutral 2 forward 3 reverse e 406023 w q ...

  • Page 29

    2-4 e emu01317 tiller handle (for tiller control models) moving the tiller handle from side to side changes the steering direction. In addi- tion, this handle has the following func- tions. 1 throttle control grip 2 throttle indicator 3 throttle friction adjusting knob/screw 4 engine stop button / e...

  • Page 30

    2-5 emu01294 throttle friction adjusting knob a friction device in the tiller handle pro- vides resistance to movement of the throttle grip. This is adjustable for opera- tor preference. When constant speed is desired, tighten the adjusting knob to maintain the desired throttle setting. W do not ove...

  • Page 31

    2-6 e w 8 attach the engine stop switch lanyard to a secure place on your clothing, your arm or leg while operating. 8 do not attach the lanyard to clothing that could tear loose. Do not route the lanyard in such a way that it could become entangled, preventing it from functioning. 8 avoid accidenta...

  • Page 32

    2-7 e emu00094 remote control both the shifter and the throttle are actu- ated by the remote control lever. In addi- tion, this remote control also has the elec- trical switches. 1 remote control lever 2 neutral interlock trigger 3 neutral throttle lever 4 main switch / choke switch 5 engine stop la...

  • Page 33

    2-8 e emu00099 neutral interlock trigger to shift out of neutral, the neutral inter- lock trigger of the remote control lever must first be pulled up. 701036 n 000324 q w emu00100 neutral throttle lever to open the throttle without shifting into either forward or reverse, place the remote control le...

  • Page 34

    2-9 e 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 35

    2-10 e emu01316 power tilt switch the power tilt adjusts the motor angle in relation to the transom. The power tilt switch is located on the remote control lever grip. Pushing the switch “up” tilts the motor up. Pressing the switch “dn” tilts the motor down. When the switch button is released, the m...

  • Page 36

    2-11 emu01295 steering friction adjusting lever a friction device provides resistance to steering movement. This is adjustable according to 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 37

    2-12 e 402013 q 403**2 q emd44110 tilt lock mechanism (for manual tilt model) the tilt-lock mechanism is used to pre- vent reverse thrust from the propeller lift- ing the outboard motor when reversing. To lock it, set the tilt-lock lever in the lock position. To release it, place the tilt-lock lever...

  • Page 38

    2-13 e emd62011 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 301045 q q 00093...

  • Page 39: Warning System

    2-14 e 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. Emu00170 overheat warning this engine has an overheat warning device. If the engine temperature rises too high, t...

  • Page 40

    2-15 emd86112 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 yam...

  • Page 41: Chapter 3

    Emf00010 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 42: Installation

    3-1 emf10010 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 th...

  • Page 43

    3-2 emf12012 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 possibl...

  • Page 44

    3-3 emu01298 mounting height to run your boat at optimum efficiency, the water-resistance (drag) of the boat and outboard motor must be made as lit- tle as possible. The mounting-height of the outboard motor greatly affects the water-resistance. If the mounting-height is too high, cavitation tends t...

  • Page 45

    3-4 emu01318 clamping the outboard motor 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 loos...

  • Page 46: Breaking In (Running In)

    3-5 e emf50312 breaking in (running in) engine your new engine requires a period of break-in (running-in) to allow mating sur- faces of moving parts to wear-in evenly. Correct break-in (running-in) will help ensure proper performance and longer engine life. C c failure to follow the break-in (runnin...

  • Page 47: Pre-Operation Checks

    3-6 emf40013 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. Emf...

  • Page 48

    3-7 emf43010 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 moto...

  • Page 49: Filling Fuel

    3-8 e emf30211 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. 902055 emf21110 ring free fuel additive gasoline is a precise blend of many differ- ent substances, each chosen to give cer- tain characteris...

  • Page 50: Starting Engine

    3-9 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 released. Gasoline (pet...

  • Page 51

    3-10 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. E 406023* n 508014 000648 5) attach the engine stop switch lanyard to a secure place on your...

  • Page 52

    3-11 emf63112* manual start model 7) pull out the choke knob completely. After the engine starts, return the knob to the original position. Note: 8 it is not necessary to use the choke when restarting a warm engine. 8 if the choke knob is left pulled out after the engine starts, the engine will stal...

  • Page 53

    3-12 emf63511* electric start model 7) pull out the choke knob completely. After the engine starts, return the choke knob to the original position. Note: 8 it is not necessary to use the choke when restarting a warm engine. 8 if the choke knob is left pulled out, the engine will stall. 8) push the s...

  • Page 54

    3-13 e 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 55

    3-14 e emu00945 electric start model 7) open the throttle slightly lifting the neutral throttle lever upwards partial- ly. You may need to change the throt- tle opening slightly depending on engine temperature. After the engine starts, return the throttle to the original position. Note: 8 as a start...

  • Page 56

    3-15 e 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 more than 5 seconds. The battery will rapidly become exhausted and it will be impossible for it to start the engine. If the engine does not start within 5 seconds, return the m...

  • Page 57: Warming Up Engine

    3-16 e emg00411 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 from th...

  • Page 58: Shifting

    3-17 e 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). 503012 406024 n f 701043 n f emu0026...

  • Page 59

    3-18 e 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. 402013* 406025 n r n r 701044 1) place the throttle control grip in the fully closed position (fo...

  • Page 60: Stopping Engine

    3-19 e 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. On start off 701023 506021 304045 902052 2) if the fuel joints are provided, discon- nect the fuel line from the motor after...

  • Page 61: Trimming Outboard

    3-20 e 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 62

    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 bo...

  • Page 63

    3-22 e up dn 701034 up dn 000610 dn up emu01414 power tilt model w 8 be sure all people are clear of the out- board motor when adjusting the 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....

  • Page 64

    3-23 e emg62010 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 fo...

  • Page 65: Tilting Up/down

    3-24 e emh10111 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 66

    3-25 e 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 67

    3-26 e 304045 up dn 701034 up dn 000610 dn up 000603 emu01312 procedure for tilting up power tilt model 1) remove the fuel-line connection from the motor. 2) push the power tilt switch “up” until the outboard has tilted up completely. 3) push the tilt support knob into the clamp bracket to support t...

  • Page 68

    3-27 e emu01313 procedure for tilting down power tilt model 1) push the power tilt switch “up” until the engine is supported by the tilt rod. 2) pull out the tilt support knob. 3) push the power tilt switch “dn” (down) to lower the engine to the desired position. 66m-9-15-3 5/10/01 9:41 am page 28.

  • Page 69: Cruising In Shallow

    3-28 e emg70011 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 using t...

  • Page 70

    E 3-29 emg71211 procedure manual tilt model 1) place the gear shift lever in the neu- tral position. 402016 403056 402022 406023* n 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 partiall...

  • Page 71: Cruising In Shallow

    E 3-30 000922 emu01319 cruising in shallow water power tilt model the engine can be tilted up partially to allow operation in shallow water. W 8 place the gear shift in the neutral posi- tion before setting for shallow water cruising. 8 return the engine to its normal posi- tion as soon as the boat ...

  • Page 72: Cruising In Other

    E emh60010 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...

  • Page 73: Chapter 4

    Emk00010 chapter 4 maintenance specification data.............................4-1 transporting and storing outboard motor ...............................4-3 trailering outboard motor ...................4-3 storing outboard motor .......................4-5 periodic maintenance......................4-...

  • Page 74: Specification Data

    4-1 e emk10111* specification data model unit f15mha 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.) ov...

  • Page 75

    F15eha f15pra f15pha 4-2 e 1,001 (39.4) 427 (16.8) 1,080 (42.5)/1,207 (47.5) 440 (17.3)/567 (22.3) 48 (106)/50 (110) 4,500–5,500 11.0 (15.0) @5,000 900–1000 4-stroke, ohc, l2 323 (19.71) 59.0 × 59.0 (2.32 × 2.32) cdi system dpr6ea-9 0.8–0.9 (0.031–0.035) tiller control electric start 0.15–0.25 (0.00...

  • Page 76: Transporting and

    4-3 emu01369 transporting and storing outboard motor w leaking fuel is a fire hazard. When trans- porting and storing the outboard motor, close the air vent screw and fuel cock to prevent fuel from leaking. Emk20210* trailering outboard motor the motor should be trailered and stored in the normal ru...

  • Page 77

    4-4 e emu00327 clamp handle mounting model when transporting or storing the out- board motor while removed from a boat, fold the tiller handle and lean the motor on the tiller handle to keep in a horizontal position. C c keep the power unit higher than the pro- peller at all times. Otherwise, coolin...

  • Page 78

    4-5 e emk16210* 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. ...

  • Page 79

    4-6 e 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

    Emk26011 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 ...

  • Page 81

    4-8 e emk29011 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 82: Periodic Maintenance

    Emu00913 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 ...

  • Page 83

    E 4-10 spark plug cleaning/adjustment/ ● ● ● 4-12 replacement greasing points greasing ● 4-11 gear oil change ● ● 4-24 fuel system inspection ● 4-14 fuel filter inspection/replacement ● ● ● 4-15 fuel tank cleaning ● 4-25 idling speed adjustment ● ● 4-16 anode inspection/replacement 1 1 4-26 outboard...

  • Page 84

    E 103192 4-11 eml00011 greasing yamaha marine grease (water resistant grease) 66m-9-15-4 5/10/01 9:43 am page 12.

  • Page 85

    E 4-12 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 86

    E 4-13 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 87

    E 4-14 emk38010 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 88

    E 4-15 emk50001* 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 coo...

  • Page 89

    E 4-16 emk54111 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 f...

  • Page 90

    E 4-17 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...

  • Page 91

    E 4-18 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 92

    E 4-19 emk74011 checking timing belt inspect the timing-belt and replace it if any to the following signs is observed: 8 cracks in the back of the belt or in the base of belt teeth. 8 excessive wear at the roots of cogs. 8 rubber portion swollen by oil. 8 belt surfaces roughened. 8 signs of wear on ...

  • Page 93

    E 4-20 emk78011 checking wiring and connectors 1) check that each grounding wire is properly secured. 2) check that each connector is engaged securely. Emk78110 exhaust leakage start the engine and check that no exhaust leaks from the joints between the exhaust cover, cylinder head and crank case. E...

  • Page 94

    4-21 e q 000604 emu01322 checking power tilt system w 8 never get under the lower unit while it is tilted, even when the tilt-support knob 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 pow...

  • Page 95

    4-22 e 210014* 602051 eml08013 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, p...

  • Page 96

    E 4-23 eml19010 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 97

    E 4-24 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 98

    E 4-25 601022 5) with the outboard motor in a vertical position, and using a flexible or pres- surized filling device, inject the gear oil into the oil drain plug hole. 6) when the oil begins to flow out of the oil level plug hole, insert and tighten the oil level plug. 7) insert and tighten the oil...

  • Page 99

    E 4-26 eml22110 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 100

    E 4-27 eml26011 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 ...

  • Page 101

    E 4-28 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 102

    E 4-29 c c 8 make sure the main switch (on applica- ble models) is “off” before working on the battery. 8 reversal of the battery leads will dam- age the rectifier. 8 connect the red lead first when installing the battery and disconnect the red lead last when removing it. Otherwise, the electrical s...

  • Page 103

    4-30 e 000936 q w e 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 gard...

  • Page 104

    E 4-31 001187 102025 eml42012 motor exterior eml42511 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”. Eml42810 c...

  • Page 105: Chapter 5

    Emn00010 chapter 5 trouble recovery troubleshooting ..............................5-1 temporary action in emergency ............................................5-5 impact damage .....................................5-5 power tilt will not operate ....................5-5 starter will not operate........

  • Page 106: Troubleshooting

    5-1 e 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 107

    5-2 e 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 108

    5-3 e 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 109

    5-4 e 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 110: Temporary Action In

    5-5 emn20010 temporary action in emergency emh80010 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) s...

  • Page 111

    5-6 emn30111 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 ro...

  • Page 112

    5-7 emn34810 emergency starting engine 1) remove the top cowling. 2) remove the cable 1 by pulling out it from the starter if equipped. E 208065* q 204053** w 208066 e 204054 3) remove both ends of the choke rink rod 2. 6) pull up the lever 3 on the carburetor to operate the choke system when the en...

  • Page 113

    5-8 e 208072 7) insert the knotted end of the emer- gency starter rope into the notch in the flywheel rotor and wind the rope several turns clockwise. 8) pull the rope slowly until resistance is felt. 9) give a strong pull straight out to crank and start the engine. Repeat if necessary. 66m-9-15-5 5...

  • Page 114

    5-9 e emn50012 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 115: Chapter 6

    Emp00010 chapter 6 index index........................................................6-1 1 2 3 4 5 6 e 66m-9-15-6 5/10/01 9:45 am page 1.

  • Page 116: Index

    6-1 e emp10010 index a adjusting idling speed ..........................4-16 adjusting trim angle..............................3-21 air vent screw...........................................2-2 b basic boating rules ..................................1-7 battery care......................................

  • Page 117

    6-2 e maintenance chart .................................4-10 motor exterior ........................................4-31 mounting height ......................................3-3 mounting the outboard motor ...............3-2 n neutral interlock trigger ..........................2-8 neutral throttl...

  • Page 118: 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 119

    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 120: 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 121

    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 122

    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 123

    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 124

    66m-9-15-6 5/10/01 9:45 am page 10

  • Page 125

    66m-9-15-6 5/10/01 9:45 am page 11.

  • Page 126

    F15a printed in japan april 2001—0.5 × 1 ! 66m-28199-15 (f15amh/f15aeh/f15aep/f15aehp) (e) printed on recycled paper ow 66m-9-15-hyoshi 01.5.10 10:48 am y [ w 1 (1,1).

  • Page 127: Lit-18626-04-69

    F15a paper lit-18626-04-69 f15a owner’s manual u.S.A.Edition 66m-9-15-hyoshi 01.5.10 10:48 am y [ w 1 (2,1).