- DL manuals
- Yamaha
- Outboard Motor
- F6B
- Ower's Manual
Yamaha F6B Ower's Manual
Summary of F6B
Page 1
Owner’s manual f6b f8b t8b lit-18626-05-03 u.S.A.Edition march 2002–1.0 × 1 cr printed in japan 68t-28199-14 (f6amh, f8cmh, ft8dehp, ft8dwh, ft8dep) (e) yamaha motor corporation, usa printed on recycled paper.
Page 3: To The Owner
E emu01449 to the owner 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 q...
Page 4
U68t14.Book page 2 monday, april 1, 2002 4:32 pm.
Page 5: Contents
E emu00003 contents read this owner’s manual carefully before operating your outboard motor. General information 1 basic components 2 operation 3 maintenance 4 trouble recovery 5 index 6 u68t14.Book page 1 monday, april 1, 2002 4:32 pm.
Page 6
U68t14.Book page 2 monday, april 1, 2002 4:32 pm.
Page 7: Chapter 1
E 1 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 north american models......
Page 8: Identification Numbers
1-1 e 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 number in the spaces provided to assist you in ordering spare parts from your ...
Page 9: Emission Control
1-2 e emu01385 emission control information emu01444 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 certif- icate this label is attached t...
Page 10
1-3 e emu01389 star labels your outboard motor is labeled with a cali- fornia 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 emiss...
Page 11: Safety
1-4 e emu00917 safety information ● 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. ● before operating the boat, read any owner’s or operator’s manuals supplied with it and all labels. Be sure y...
Page 12
1-5 e ● when a swimmer is in the water near you shift into neutral and shut off the engine. ● be informed about boating safety. Addi- tional publications and information can be obtained from many organizations, includ- ing the following: united states coast guard consumer affairs staff (g-bc) office...
Page 13: Important Labels
1-6 e emu00014 important labels warning labels 1 2 caution labels 3 u68t14.Book page 6 monday, april 1, 2002 4:32 pm.
Page 14: 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 15
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 steering rules are followed: meeting (you are approaching another vessel head-on) crossing (you are traveling across the other ves- sel’s path) ...
Page 16
1-9 e other vessel is expected to maintain its course and speed. You must stay out of its way until you are clear of it. Likewise, if 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 t...
Page 17
1-10 e remember, markings may vary by geo- graphic location. Always consult local boat- ing authorities before driving your boat in unfamiliar waters. U68t14.Book page 10 monday, april 1, 2002 4:32 pm.
Page 18: Fueling Instructions
1-11 e emu00016 fueling instructions warning @ gasoline and its vapors are highly flammable and explosive! ● do not smoke when refueling, and keep away from sparks, flames, or other sources of ignition. ● stop engine before refueling. ● refuel in a well-ventilated area. Refuel portable fuel tanks of...
Page 19
1-12 e emu01804 gasoline if knocking or pinging occurs, use a different brand of gasoline or premium unleaded fuel. Emu00027 gasohol there are two types of gasohol: gasohol containing ethanol and that containing meth- anol. Gasohol containing ethanol can be used if ethanol content does not exceed 10...
Page 20: Engine Oil
1-13 e emu01769 engine oil recommended engine oil: 4-stroke motor oil with a combination of cor- responding sae and api as shown in the chart. Caution: @ all 4-stroke engines are shipped from the factory without engine oil. @ engine oil quantity: see chapter 4, “specifications.” u68t14.Book page 13 ...
Page 21: Battery Requirement
1-14 e emu01775 battery requirement caution: @ 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 bat...
Page 22: Propeller Selection
1-15 e emu01395 propeller selection the performance of your outboard motor will be critically affected by your choice of pro- peller, 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 engi...
Page 23: Start-In-Gear Protection
1-16 e 1 propeller diameter (in inches) 2 propeller pitch (in inches) 3 type of propeller (propeller mark) refer to the section “checking propel- ler” for instructions on propeller removal and installation. Emu01209¯ start-in-gear protection yamaha outboard motors or yamaha approved remote control u...
Page 24: -Memo-
1-17 e -memo- u68t14.Book page 17 monday, april 1, 2002 4:32 pm.
Page 25: Chapter 2
2 e emu00037 chapter 2 basic components main components ................................2-1 operations of controls and other functions..................................2-3 fuel tank...................................................2-3 choke knob ..............................................2-3 rec...
Page 26: Main Components
2-1 e emu01206 main components 1 top cowling 2 top cowling lock lever 3 anti-cavitation plate * 4 propeller 5 cooling water inlet 6 oil drain bolt 7 trim angle adjusting rod 8 clamp bracket 9 recoil starter handle 0 warning indicator a engine stop lanyard switch/ engine stop button b gear shift leve...
Page 27: T8A
2-2 e 1 top cowling 2 top cowling lock lever 3 anti-cavitation plate 4 propeller 5 cooling water inlet 6 oil drain bolt 7 trim angle adjusting rod 8 clamp bracket * 9 power tilt switch * 0 recoil starter handle a warning indicator * b starter button * c engine stop layard switch/ engine stop button ...
Page 28: Operations of Controls
2-3 e emu00039 operations of controls and other functions emu01465 fuel tank if your model included a portable fuel tank, its parts and functions are as follows. 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 pro...
Page 29
2-4 e emu00057 tiller control model choke knob pulling out this knob (setting it to on) sup- plies a rich mixture required to start the engine. Emu00059 recoil starter handle (if equipped) pull the handle gently until resistance is felt. Then vigorously pull the handle straight out to crank the engi...
Page 30
2-5 e emu01122¯ multifunction tiller handle the tiller handle centralized most of func- tions for the outboard motor operation. 1 tiller handle 2 gear shift lever 3 throttle control grip 4 throttle indicator 5 throttle friction adjusting knob 6 engine stop lanyard switch / engine stop but- ton (if e...
Page 31: Warning
2-6 e emu00081 throttle control grip the throttle control grip is on the tiller han- dle. Turn the grip counterclockwise to increase speed and clockwise to decrease speed. Emu00082 throttle indicator the fuel consumption curve on the throttle indicator shows the relative amount of fuel consumed for ...
Page 32: Warning
2-7 e emu00933 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 clothing, or arm or leg. Should the operator fall over- board or leave the helm, the lanyard will ...
Page 33
2-8 e emu01323 power tilt switch the power tilt adjusts the motor angle in relation to the transom. The power tilt switch is located on the tiller handle. Pushing the switch “up” tilts the motor up. Pressing the switch “dn” tilts the motor down. When the switch button is released, the motor will sto...
Page 34
2-9 e 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 continue to run at idle until the lever is moved about 35° (a detent can be felt). Moving the lever farther opens the thro...
Page 35
2-10 e emu00100 neutral throttle lever to open the throttle without shifting into either forward or reverse, place the remote control lever in the neutral position and lift the neutral throttle lever. Note: @ the neutral throttle lever will operate only when the remote control lever is in neutral. T...
Page 36: Warning
2-11 e emu00102 choke switch while the main switch is being pressed in at “on” or “start”, the choke system will switch on, to supply a rich mixture required to start the engine. (when the key is released, it will switch off automatically.) emu00934 engine stop lanyard switch the lock-plate 1 must b...
Page 37: Warning
2-12 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 38: Warning
2-13 e emu01295 steering friction adjusting lever a friction device provides resistance to steering movement. This is adjustable according to operator preference. Warning @ do not overtighten the friction adjusting lever. If there is too much resistance, it may be difficult to steer, which could res...
Page 39: Warning
2-14 e emu01501¯ power tilt switch the power tilt adjusts the motor angle in relation to the transom. The power tilt switch is located on top of the steering bracket. Pushing the switch “up” trims the motor up, then tilts the motor up. Pressing the switch “dn” tilts the motor down and trims the moto...
Page 40: Caution:
2-15 e emu00155 tilt support knob power tilt model to keep the outboard motor in the tilted-up position, push the tilt support knob under the swivel bracket. Emu00156¯ tilt support bar the tilt support bar 1 keeps the outboard motor in the tilted up position. Emu01348 power tilt unit this unit tilts...
Page 41
2-16 e emu00161 top cowling lock lever to remove the engine top cowling, pull up 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 down- ward. Emu01701 flushing device this devi...
Page 42: Warning System
2-17 e emu00169 warning system caution: @ do not continue to operate the engine if the warning device has activated. Con- sult your yamaha dealer if the problem cannot be located and corrected. @ emu00173 low oil pressure warning if oil pressure drops too low, the warning device will activate. ( ❍):...
Page 43: Chapter 3
E 3 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 ...
Page 44: Installation
3-1 e emu00175 installation caution: @ 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 transducers) can create airborne water spray while the boat is cruising. Severe engine damage may resul...
Page 45: Warning
3-2 e emu01478 mounting the outboard motor warning @ ● overpowering a boat may cause severe instability. Do not install an out- board motor with more horsepower than the maximum rating on the capac- ity plate of the boat. If the boat does not have a capacity plate, consult the boat manufacturer. ● t...
Page 46
3-3 e emu01298 mounting height to run your boat at optimum efficiency, the water-resistance (drag) of the boat and out- board motor must be made as little as possi- ble. The mounting-height of the outboard motor greatly affects the water-resistance. If the mounting-height is too high, cavitation ten...
Page 47: Warning
3-4 e emu01318¯ clamping the outboard motor 1) place the outboard on the transom so that it is positioned as close to the cen- ter as possible. Tighten the transom clamp screws evenly and securely. Check the clamp-screws for tightness occasionally during operation of the motor as they can work loose...
Page 48: Breaking In (Running In)
3-5 e emu00224 breaking in (running in) engine your new engine requires a period of break- in (running-in) to allow mating surfaces of moving parts to wear-in evenly. Correct break-in (running-in) will help ensure proper performance and longer engine life. Caution: @ failure to follow the break-in (...
Page 49: Pre-Operation Checks
3-6 e emu00204 pre-operation checks warning @ 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. @ caution: @ do not start the engine out of water. Overheating and serious engine da...
Page 50
3-7 e emu00209 controls ● check throttle, shift, and steering for proper operation before starting the engine. ● the controls should work smoothly, with- out binding or unusual free play. ● look for loose or damaged connections. ● check operation of the starter and stop switches when the outboard mo...
Page 51: Filling Fuel
3-8 e 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. Fuel tank capacity: refer to specifications, page 4-1. Emu00203 ring free fuel additive gasoline is a precise blend of many different substan...
Page 52: Starting Engine
3-9 e emu01461 starting engine warning @ ● before starting the engine, make sure that the boat is tightly moored and that you can steer clear of any obstruc- tions. Be sure there are no swimmers in the water near you. ● when the air vent screw is loosened, gasoline (petrol) vapor will be released. G...
Page 53: Warning
3-10 e emu01497 procedure for tiller control model 4) place the gear-shift lever in the neutral position. Note: @ the start-in-gear protection device prevents 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 o...
Page 54
3-11 e emu01514¯ manual start models 7) pull out the choke knob completely. Note: @ it is not necessary to use the choke when restarting a warm engine. @ 8) pull the starter handle slowly until you feel resistance. Then give a strong pull straight out to crank and start the engine. Repeat if necessa...
Page 55: Caution:
3-12 e emu01491 electric start models 7) pull out the choke knob completely. Note: @ ● it is not necessary to use the choke when restarting a warm engine. ● if the choke knob is left pulled out, the engine will stall. @ 8) push the starter button to start the motor. 9) immediately after the engine s...
Page 56: Warning
3-13 e emu01000 procedure for remote control model 4) place the remote control lever in the neutral position. When the engine is warm, open the throttle slightly using the neutral throttle lever or the free acceler- ator. After the engine starts, return the throttle to the fully closed position. Not...
Page 57: Caution:
3-14 e emu01512 electric start models 7) open the throttle slightly lifting the neu- tral throttle lever upwards partially. You may need to change the throttle opening slightly depending on engine tempera- ture. After the engine starts, return the throt- tle to the original position. Note: @ ● as a ...
Page 58: Warming Up Engine
3-15 e emu01368¯ warming up engine 1) after the engine starts, return the choke knob to the half-way position. For approximately the first 5 minutes after starting, warm up the engine by operat- ing at one fifth throttle or less. After the engine has warmed up, completely push in the choke knob. (fa...
Page 59: Shifting
3-16 e emu00261 shifting warning @ before shifting, make sure there are no swimmers or obstacles in the water near you. @ caution: @ 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). @ emu00265 forward ...
Page 60: Warning
3-17 e emu01326¯ reverse warning @ 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 mo...
Page 61: Stopping Engine
3-18 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 recom- mended. Emu00277¯ 1) push and hold the engine stop button or turn the main switch to “off”. 2) if the fuel joints are provided, di...
Page 62: Trimming Outboard
3-19 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 cor- rect trim angle depends upon the combina-...
Page 63: Warning
3-20 e adjusting trim angle 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 d...
Page 64: Warning
3-21 e emu01414 power tilt model warning @ ● 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. ● use caution when trying a trim posi- tion for the first time. Increase speed gradua...
Page 65
3-22 e 2) tilt the engine to the desired angle using the power tilt switch. Note: @ stay within the trim operating angle when trimming the outboard motor using the power tilt system. @ to raise the bow (“trim-out”), tilt the engine up. To lower the bow (“trim-in”), tilt the engine down. Make test ru...
Page 66
3-23 e emu01558 bow up 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. When trimmed out, the boat may have more tendency to steer to one side or the other. Compensate f...
Page 67: Tilting Up/down
3-24 e 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 pro- peller and casing from damage by collision with obstructions, and also to reduce salt corrosion. Caution: @ ● before tilting the motor...
Page 68
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 69
3-26 e emu01573 procedure for tilting up power tilt models 1) disconnect the fuel line or close the fuel cock. 2) push the power tilt switch “up” until the outboard has tilted up completely. U68t14.Book page 26 monday, april 1, 2002 4:32 pm.
Page 70: Warning
3-27 e 3) push the tilt support knob into the clamp bracket to support the engine. Warning @ ● after tilting the engine, be sure to sup- port it with the tilt support knob. Oth- erwise, the engine could fall back down suddenly if oil in the power tilt unit should lose pressure. ● never operate the e...
Page 71: Cruising In Shallow
3-28 e emu01370 cruising in shallow water manual tilt model the outboard motor can be tilted up partially to allow operation in shallow water. Warning @ ● place the gear shift in the neutral posi- tion before using the shallow water cruising system. ● run the boat at the lowest possible speed when u...
Page 72
3-29 e emu00310 procedure 1) place the gear shift lever in the neutral position. 2) place the tilt lock lever in the release position. 3) slightly tilt up the engine. The tilt-sup- port bar will lock automatically, support- ing the engine in a partially raised position. Note: @ this motor has 2 posi...
Page 73: Cruising In Shallow
3-30 e emu01319 cruising in shallow water power tilt model the engine can be tilted up partially to allow operation in shallow water. Warning @ ● place the gear shift in the neutral posi- tion before setting for shallow water cruising. ● return the engine to its normal posi- tion as soon as the boat...
Page 74
3-31 e 2) slightly tilt up the engine using the power tilt switch. U68t14.Book page 31 monday, april 1, 2002 4:32 pm.
Page 75: Cruising In Other
3-32 e 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 instructions in “transporting and storing out-...
Page 76: -Memo-
3-33 e -memo- u68t14.Book page 33 monday, april 1, 2002 4:32 pm.
Page 77: Chapter 4
E 4 emu00317 chapter 4 maintenance specifications ......................................4-1 transporting and storing outboard motor.................................4-4 trailering outboard motor ........................4-4 transporting outboard when unmounted ............................................
Page 78: Specifications
4-1 e emu01870¯ specifications model item unit f6mhb dimensions overall length mm (in.) 927 (36.5) overall width mm (in.) 350 (13.8) overall height s/l/x mm (in.) 998 (39.3)/1,125 (44.3)/– transom height s/l/x mm (in.) 435 (17.1)/562 (22.1)/– weight s/l/x kg (lb.) 38 (84)/39.5 (87)/– performance ful...
Page 79
4-2 e f8mhb t8phb t8ehb 1,038 (40.9) 1,038 (40.9) 1,038 (40.9) 371 (14.6) 371 (14.6) 371 (14.6) 998 (39.3)/1,125 (44.3)/– –/1,187 (46.7)/1,255 (49.4) –/1,187 (46.7)/1,255 (49.4) 435 (17.1)/562 (22.1)/– –/557 (21.9)/625 (24.6) –/557 (21.9)/625 (24.6) 38 (84)/39.5 (87)/– –/52 (115)/53 (117) –/46.5 (10...
Page 80
4-3 e model item unit t8prb dimensions overall length mm (in.) 552 (21.7) overall width mm (in.) 312 (12.3) overall height s/l/x mm (in.) –/1,187 (46.7)/1,255 (49.4) transom height s/l/x mm (in.) –/557 (21.9)/625 (24.6) weight s/l/x kg (lb.) –/49 (108)/50 (110) performance full throttle operating ra...
Page 81: Transporting and
4-4 e emu01369 transporting and storing outboard motor warning @ 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. @ emu00326 trailering outboard motor the motor should be trailered and stored in th...
Page 82: Caution:
4-5 e 1 2 emu01362 transporting outboard when unmounted transport in an upright position to prevent engine oil from entering the cylinder head and causing damage to the motor. Emu00883 storing outboard motor when storing your yamaha outboard for pro- longed periods of time, (2 months or longer), sev...
Page 83: Warning
4-6 e emu00335 filling fuel tank fill the fuel tank with fresh fuel and add one ounce of “yamaha fuel conditioner and sta- bilizer” (part no. Lub-fuelc-12-00) to each gallon of fuel. Note: @ the use of “yamaha fuel conditioner and stabilizer” eliminates the need to drain the fuel system. Consult you...
Page 84: Caution:
4-7 e emu00340 ● flushing in a water tank caution: @ if the fresh water level is below the level of the anti-cavitation plate, or if the water supply is insufficient, engine seizure may occur. @ 1) remove the engine top cowling. 2) install the outboard motor on the water tank. 3) fill the tank with ...
Page 85
4-8 e 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 rein- stall the spark plug(s) and torque to proper specification. (refer to the “cleaning and adjusting spark plug”). 2) turn the...
Page 86: Warning
4-9 e emu01545 battery care warning @ 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...
Page 87: Periodic Maintenance
4-10 e emu00354 periodic maintenance warning @ be sure to turn off the engine when you perform maintenance unless otherwise specified. If you or the owner is not famil- iar with machine servicing, this work should be done by a yamaha dealer or other qualified mechanic. @ a service manual is availabl...
Page 88
4-11 e emu00363¯ maintenance chart frequency of maintenance operations may be adjusted according to the operating condi- tions, but the following table gives general guidelines. The mark ( ●) indicates the check-ups which you may carry out yourself. The mark ( ❍) indicates work to be carried out by ...
Page 89
4-12 e emu00366 greasing yamaha marine grease (water resistant grease) u68t14.Book page 12 monday, april 1, 2002 4:32 pm.
Page 90: Warning
4-13 e emu01202 cleaning and adjusting spark plug warning @ when removing or installing a spark plug, be careful not to damage the insu- lator. A damaged insulator could allow external sparks, which could lead to explosion or fire. @ the spark plug is an important engine com- ponent and is easy to i...
Page 91
4-14 e when fitting the plug, always clean the gas- ket 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 estimate of the correct torque is 1/4 to 1...
Page 92: Warning
4-15 e emu01509 checking fuel system warning @ 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 mal- functions. If any problem is found, it should be repaired immed...
Page 93: Warning
4-16 e emu00370 inspecting fuel filter warning @ gasoline (petrol) is highly flammable, and its vapors are flammable and explo- sive. ● if you have any question about prop- erly doing this procedure, consult your yamaha dealer. ● do not perform this procedure on a hot or running engine. Allow the en...
Page 94: Warning
4-17 e emu00991 adjusting idling speed warning @ ● do not touch or remove electrical parts when starting or during operation. ● keep hands, hair and clothes away from flywheel and other rotating parts while engine is running. @ caution: @ this procedure must be performed while the outboard motor is ...
Page 95: Warning
4-18 e emu01415¯ changing engine oil warning @ ● avoid draining the engine oil immedi- ately after stopping the engine. The oil is hot and should be handled with care to avoid burns. ● be sure the outboard is securely fas- tened to the transom or a stable stand. @ caution: @ ● change the engine oil ...
Page 96: Caution:
4-19 e 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 con- tact 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...
Page 97: Caution:
4-20 e emu00380 checking timing belt inspect the timing-belt and replace it if any to the following signs is observed: ● cracks in the back of the belt or in the base of belt teeth. ● excessive wear at the roots of cogs. ● rubber portion swollen by oil. ● belt surfaces roughened. ● signs of wear on ...
Page 98
4-21 e emu00383 checking wiring and connectors 1) check that each grounding wire is prop- erly 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 case....
Page 99: Warning
4-22 e emu01322 checking power tilt system warning @ ● 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. ● make sure no one is under the out- board before performing this test. @ 1) check the po...
Page 100: Warning
4-23 e emu00388 checking propeller warning @ you could be seriously injured if the engine accidentally starts while you are near the propeller. ● before inspecting, removing or install- ing the propeller, remove the spark plug caps from the spark plugs. Also, put the shift control in neutral, put th...
Page 101: F6/f8
4-24 e f6/f8 t8 emu01504 removing the propeller 1) straighten the cotter pin 1 and pull it out using a pair of pliers. 2) remove the propeller nut 2, washer 3 and spacer 4. 3) remove the propeller 5, washer 6 and spacer 7. Emu01505 installing the propeller caution: @ ● be sure to install the spacer ...
Page 102: Warning
4-25 e emu01460 changing gear oil warning @ ● be sure the outboard is securely fas- tened to the transom or a stable stand. You could be severely injured if the outboard falls on you. ● never get under the lower unit while it is tilted, even when the tilt-support lever/knob is locked. Severe injury ...
Page 103
4-26 e 5) with the outboard motor in a vertical position, and using a flexible or pressur- ized 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 drain ...
Page 104: Warning
4-27 e emu01510 cleaning fuel tank warning @ gasoline (petrol) is highly flammable, and its vapors are flammable and explo- sive. ● if you have any question about prop- erly doing this procedure, consult your yamaha dealer. ● keep away from sparks, cigarettes, flames or other sources of ignition whe...
Page 105: F6/f8
4-28 e f6/f8 t8 t8 emu01462 inspecting and replacing anode(s) yamaha outboard motors are protected from corrosion by sacrificial anodes. Check the anodes periodically. Remove scales from the surfaces of the anodes. For inspection and replacement of anodes, consult a yamaha dealer. Caution: @ do not ...
Page 106: Warning
4-29 e emu00404 checking battery (for electric start model) warning @ battery electrolytic fluid is dangerous; it contains sulfuric acid and therefore is poisonous and highly caustic. Always follow these preventive mea- sures: ● avoid bodily contact with electrolytic fluid as it can cause severe bur...
Page 107
4-30 e 1) check the electrolyte level at least once a month. Fill to the manufacturer’s rec- ommended level when necessary. Top up only with distilled water (or pure de- ionized water suitable to use in batter- ies). 2) keep the battery always in a good state of charge. Installing a voltmeter will h...
Page 108: Warning
4-31 e emu01279¯ connecting the battery warning @ 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. @ caution: @ ● make sure the main switch (on applica- ble models) is “off” before working on the batter...
Page 109
4-32 e emu00408 checking bolts and nuts 1) check that bolts securing the cylinder head and engine and the nut securing the flywheel are tightened with their specified tightening torque. 2) check the tightening torque of other bolts and nuts. U68t14.Book page 32 monday, april 1, 2002 4:32 pm.
Page 110: Caution:
4-33 e emu01172 cleaning cooling-water passages flushing device equipped model perform this procedure right after operation 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 connect...
Page 111
4-34 e emu00409 motor exterior emu00410 cleaning the outboard motor after use, wash the exterior of the outboard 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 pain...
Page 112: -Memo-
4-35 e -memo- u68t14.Book page 35 monday, april 1, 2002 4:32 pm.
Page 113: Chapter 5
E 5 emu00414 chapter 5 trouble recovery troubleshooting ...............................5-1 temporary action in emergency .............................................5-4 impact damage ........................................5-4 power tilt will not operate.........................5-4 starter will not...
Page 114: Troubleshooting
5-1 e emu01752¯ 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 possible remedies. (this chart covers all yamaha outboard motors. Therefore, some items may not appl...
Page 115
5-2 e c. Engine idles irregularly or stalls. 1. Spark plug(s) fouled or incorrect type. 1. Inspect spark plug(s). Clean or replace with recommended type. 2. Fuel system obstructed. 2. Check for pinched or kinked fuel line or other obstructions in fuel system. 3. Fuel contaminated or stale. 3. Fill t...
Page 116
5-3 e e. Engine power loss. 1. Propeller damaged. 1. Have propeller repaired or replaced. 2. Propeller pitch or diameter incorrect. 2. Install correct propeller to operate out- board at its recommended speed (r/min) range. 3. Trim angle incorrect. 3. Adjust trim angle to achieve most effi- cient ope...
Page 117: Temporary Action In
5-4 e emu00416 temporary action in emergency emu01492 impact damage warning @ the outboard motor can be seriously damaged by a collision while operating or trailering. Damage could make the outboard motor unsafe to operate. @ if the outboard motor hits any object in the water, follow the procedure b...
Page 118: Warning
5-5 e 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 emer- gency starter rope. Warning @ ● use this procedure only in an emer- gency and only to return to port for repairs. ● when the emergenc...
Page 119
5-6 e emu01513¯ emergency starting engine 1) remove the top cowling. 2) remove the start-in-gear protection cable from the starter if equipped. 3) remove the starter/flywheel cover after removing the bolt(s). 4) prepare the engine for starting. Refer to “starting engine” for details. Be sure the eng...
Page 120
5-7 e 5) insert the knotted end of the emergency starter rope into the notch in the fly- wheel rotor and wind the rope 1 or 2 turns clockwise. 6) give a strong pull straight out to crank and start the engine. Repeat if neces- sary. U68t14.Book page 7 monday, april 1, 2002 4:32 pm.
Page 121: Caution:
5-8 e emu01363 engine fails to operate if the engine stops unexpectedly, or if the engine does not start, you may attempt to use the following emergency circuit proce- dure. Before using this procedure, be sure to check the “troubleshooting” section to eliminate causes such as low fuel or over- heat...
Page 122: Caution:
5-9 e emu01511 treatment of submerged motor if the outboard motor is submerged, immedi- ately take it a yamaha dealer. Otherwise, some corrosion may begin almost immedi- ately. If you cannot immediately take the outboard motor to a yamaha dealer, follow the proce- dure below in order to minimize eng...
Page 123: Chapter 6
E 6 emu00450 chapter 6 index index ..........................................................6-1 u68t14.Book page 1 monday, april 1, 2002 4:32 pm.
Page 124: Index
6-1 e emu00451 index a adjusting idling speed.................................... 4-17 adjusting trim angle ....................................... 3-20 air vent screw .................................................. 2-3 approval label of emission control certificate... 1-2 b basic boating rules (...
Page 125
6-2 e manufactured date label .................................. 1-2 meeting ............................................................ 1-8 motor exterior................................................. 4-34 mounting height ............................................... 3-3 mounting the outboard...
Page 126: 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 com- mitted to exceptional customer satisfaction, and we want your ownership experience to be a satisfying one. Please read the follo...
Page 127
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 purchased yamaha needs service while in the united states, yamaha will assist the local dealer whenever possible. However, some pro...
Page 128
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 distrib- uted by yamaha motor corporation, u.S.A. Will be free from defects in ...
Page 129
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 130
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 131
A5-shiro_tate.Fm page 1 monday, may 28, 2001 12:03 pm.
Page 132: Owner’S Manual
Owner’s manual f6b f8b t8b lit-18626-05-03 u.S.A.Edition march 2002–1.0 × 1 cr printed in japan 68t-28199-14 (f6amh, f8cmh, ft8dehp, ft8dwh, ft8dep) (e) yamaha motor corporation, usa printed on recycled paper.
Page 133
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 134: Attn: Warranty Department
Place postage here attn: warranty department warranty card 2/27/02 11:47 am page 2.