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Yamaha C40A Owner's Manual

Other manuals for C40A: User Manual

Summary of C40A

  • Page 1

    C40a/c50a lit-18626-04-75 c40a c50a owner’s manual u.S.A.Edition 63d-9-15 hyoshi 01.4.18 2:09 pm y [ w 1 (2,1).

  • Page 2

    63d-9-15 hyoshi 01.4.18 2:09 pm 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

    63d-9-15-1 4/18/01 10:47 am page 2.

  • Page 5: General Information

    General information basic components operation maintenance trouble recovery index contents read this owner’s manual carefully before operating your outboard motor. 1 2 3 4 5 6 e 63d-9-15-1 4/18/01 10:47 am page 3.

  • Page 6

    63d-9-15-1 4/18/01 10:47 am page 4.

  • Page 7: Chapter 1

    E 2 3 4 5 6 emb00010 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 ..........................1-3 important labels ..............

  • Page 8: Yamaha

    E 1-1 1 401012 904011* 123 yamaha q 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...

  • Page 9: Emission Control

    E 1-2 ****** q w emu01385 emission control information emu01386 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 ...

  • Page 10: Safety

    E 1-3 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 11

    E 1-4 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 informa- tion can be obtained from many orga- nizations, including the following: united states coast guard consumer affairs staff (g-bc) office...

  • Page 12: Important Labels

    Emb30010 important labels warning labels 1 e 1-5 202016* w q caution labels 2 warning ● be sure shift control is in neutral before starting engine. (except 2hp) ● do not touch or remove electrical parts when starting or during operation. ● keep hands,hair,and clothes away from flywheel and other rot...

  • Page 13: Basic Boating Rules

    E 1-6 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 14

    E 1-7 rules when encountering ves- sels 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 travelling across the other vessel’s pat...

  • Page 15

    1-8 its course and speed. You must stay out of its way until you are clear of it. Like- wise, if another vessel is passing you, you should maintain your speed and direction so that the other vessel can steer itself around you. Other special situations there are three other rules you should be aware ...

  • Page 16

    1 1 1 a 1 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 " 2...

  • Page 17: Fueling Instructions

    1-10 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 bo...

  • Page 18

    1-11 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. Emu00027 gasohol there are two types of gasohol: gasohol containing ethanol and that containing methanol. Gasohol con...

  • Page 19: Propeller Selection

    1-12 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 s...

  • Page 20

    1-13 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 eng...

  • Page 21: Start-In-Gear Protection

    1-14 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. 63d-9-15-1 4/18/01 10...

  • Page 22: – Memo –

    E – memo – 63d-9-15-1 4/18/01 10:47 am page 20

  • Page 23: Chapter 2

    Emc00010 chapter 2 basic components main components ..............................2-1 operations of controls and other functions ................................2-2 fuel tank ................................................2-2 remote control .....................................2-3 trim tab ...........

  • Page 24: Main Components

    R w i t o y !0 u q 101142* e 2-1 e emu01206 main components 1 clamp bracket 2 anode 3 battery lead 4 cooling water inlet 5 trim tab 6 anti-cavitation plate 7 anode 8 trim angle adjusting-rod 9 tilt-support lever 0 top cowling q fuel hose * may not be exactly as shown; also may not be included as sta...

  • Page 25: Operations of Controls

    2-2 e emc20010 operations of controls and other functions emc21111 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) fuel hose joint this connector is provided for co...

  • Page 26

    2-3 e 701036 701011* w q e r t y u emc80612 remote control both the shifter and the throttle are actu- ated by the remote control lever. In addi- tion, this control also has the electrical switches. 1 remote control lever 2 neutral interlock trigger 3 neutral throttle lever 4 main switch 5 engine st...

  • Page 27

    2-4 e 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 neu- tral. The remot...

  • Page 28

    E 2-5 emc28210 engine stop lanyard switch the lock-plate on the end of the lanyard must be attached to the engine stop switch for the engine to run. The lanyard should be attached to a secure place on the operator’s clothing, or arm or leg. Should the operator fall overboard or leave the helm, the l...

  • Page 29

    2-6 e 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 30

    E emu01297 trim angle adjusting rod the position of the trim angle adjusting rod determines the minimum trim angle of the outboard motor in relation to the transom. 404011 2-7 q w 603011 a b emd04011* trim tab the trim tab should be adjusted so that the steering control can be turned to either the r...

  • Page 31

    Emd60010 tilt support lever to keep the outboard motor in the tilted- up position, lock the tilt support lever to the clamp bracket. E 2-8 403011 emd62010 top cowling lock lever to remove the engine top cowling, push the lock lever downward. Then lift off the cowling. When replacing the cowling, che...

  • Page 32: Warning System

    E 2-9 701054 emd80010 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. 605015 emu00170 overheat warning this engine has an overheat warning device. If the engine temperature rise...

  • Page 33: Chapter 3

    Emf00010 chapter 3 operation installation ........................................3-1 mounting the outboard motor............3-2 filling fuel amd engine oil ...........3-4 filling fuel..............................................3-4 gasoline (petrol) and oil mixing .........3-5 pre-operation checks...

  • Page 34: Installation

    E 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 ...

  • Page 35

    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 36

    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. 104012 0 ~ 25 mm (0 ~ 1 in.) emu01298 mounting heigh...

  • Page 37: Filling Fuel and

    3-4 emu01019 ring free fuel additive gasoline is a precise blend of many differ- ent substances, each chosen to give cer- tain characteristics. Gasoline blends have been changing in recent years in response to concerns about pollution and resulting emissions regulations. One of the most obvious chan...

  • Page 38

    Emf35011* gasoline (petrol) and oil mixing pre-mix model 1) pour oil and gasoline into the fuel tank, in that order. 1 engine oil 2 gasoline (petrol) 2) then mix the fuel thoroughly by shak- ing. 3) make sure the oil is mixed with gaso- line . E 3-5 while many additives available may reduce deposits...

  • Page 39

    E 3-6 c c 8 avoid using any oil other than the des- ignated type. 8 use a thoroughly blended fuel-oil mix- ture. 8 if the mixture is not thoroughly blend- ed, or if the mixing ratio is incorrect, the following problems could occur: low oil ratio: lack of oil could cause major engine trouble, such as...

  • Page 40: Pre-Operation Checks

    E 3-7 emf40111 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. Fuel 8 check to be sure you have plenty of fuel for your trip. 8 make sure there are no fuel...

  • Page 41: Breaking In (Running In)

    E 3-8 emf50011 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 42

    E 3-9 3) second hour: accelerate at full throttle onto plane, then reduce engine speed to three- quarter throttle (approximately 4,000 r/min). Vary engine speed occasional- ly. Run at full throttle for one minute, then allow about 10 minutes of opera- tion at three-quarter throttle or less to let th...

  • Page 43: Starting Engine

    E 3-10 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 (...

  • Page 44

    E 3-11 902025 n 701015 000293 3) squeeze the primer bulb with the out- let end up until you feel it become firm. 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...

  • Page 45

    E 3-12 emu00254 electric start model 7) turn the main switch to “start”, and hold it for a maximum of 5 sec- onds. 8) immediately the engine starts, release the main switch to return it to “on”. C c 8 do not turn the main switch to “start” when the engine is running. 8 do not keep the starter-motor ...

  • Page 46: Warming Up Engine

    E 3-13 emg00210 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) check for a steady flow of water from the cooling-water pilot hole. 309014 c c a continuous flow of water from the pilot hole ...

  • Page 47: Shifting

    E 3-14 emg20310 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). Forward pull up the neutral interloc...

  • Page 48: Stopping Engine

    E 3-15 emg38010 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. Emg41211 procedure 1) turn the main switch to “off”. Note: the engine can also be stopped by pulling the lanyard from the en...

  • Page 49: Trimming Outboard

    E 3-16 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 50

    E 3-17 adjusting trim angle up dn 701034 up dn q 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...

  • Page 51

    E 3-18 emu00282 bow up when the boat is on plane, a bow-up atti- tude result in less drag, greater stability and efficiency. This is generally when the keel line of the boat is up about 3 to 5 degrees. When trimmed out, the boat may have more tendency to steer to one side or the other. Compensate fo...

  • Page 52: Tilting Up/down

    E 3-19 emu01200 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 before tilting the motor, follow th...

  • Page 53

    E 3-20 emu00293 procedure for tilting up power trim/tilt model 1) remove the fuel-line connection from the motor. 2) push the power trim/tilt switch “up” until the outboard has tilted up com- pletely. 3) turn the tilt-support lever toward engine bracket and support the engine. W after tilting the en...

  • Page 54: Cruising In Other

    E 3-21 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 out...

  • Page 55: 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 ......................4-4 periodic maintenance ......................4-...

  • Page 56: Specification Data

    4-1 e emk10011* specification data model unit c40tra item 25 (2.5, 18) 35 (3.5, 2.5) 8 spark plug n•m (kgf•m, lb•ft) 8 propeller nut n•m (kgf•m, lb•ft) dimensions performance 8 overall length mm (in.) 8 overall width mm (in.) 8 overall height l mm (in.) 8 transom height l mm (in.) 8 weight l kg (lb....

  • Page 57

    4-2 e c50tra — — 25 (2.5, 18) 35 (3.5, 2.5) 670 (26.4) 360 (14.2) 1,319 (51.9) 533 (21.0) 87 (192) 4,500 ~ 5,500 36.8 (50) at 5,000 r/min 750 ~ 850 2-stroke, l 3 698 (42.60) 67.0 × 66.0 (2.64 × 2.60) c.D.I system b8hs-10 0.9 ~ 1.0 (0.035 ~ 0.039) remote control electric start 12-70 ~ 100 380 124 12 ...

  • Page 58: Transporting and

    4-3 e 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. Trailering outboard motor the motor should be trailered and stored in the normal running po...

  • Page 59

    4-4 e emk16010 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. This is especially important for your precision blend equipped outboard due to the lean oil ratios ...

  • Page 60

    4-5 e 605024 q w 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. Emu00339 8 flushing in a water tank c c if the fresh water level is below the level of the anti-cavitati...

  • Page 61

    4-6 8 flushing with the flushing attachment 1) remove the top cowling and silencer cover. Remove the propeller. 2) install a flushing attachment to the lower unit. (flushing attachment available from your yamaha dealer). C c avoid running the outboard at high speed while on the flushing attachment, ...

  • Page 62

    4-7 e emk26011 lubrication 1) remove the spark plugs, and spray a 10 second spray of yamaha “stor- rite engine fogging oil” into each cylinder. Grease the spark plug threads and reinstall the spark plugs and torque to proper specification. (refer to the “cleaning and adjusting spark plug”). 2) turn ...

  • Page 63

    4-8 e emk29010 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 64: Periodic Maintenance

    4-9 e emk32110 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. A service manual is available for purchase thr...

  • Page 65

    4-10 e carburetor cleaning 1 1 1 — fuel filter cleaning ● ● ● 4-15 fuel system inspection ● ● 4-14 fuel tank *2 cleaning ● — throttle link inspection/adjustment 1 — idling speed inspection/adjustment ● ● 4-16 spark plug cleaning/adjustment/ ● ● ● 4-12 replacement oil tank water drain cleaning ● ● ● ...

  • Page 66

    4-11 e emu00366 greasing yamaha marine grease (water resistant grease) 63d-9-15-4 4/18/01 10:44 am page 12.

  • Page 67

    4-12 e 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 68

    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 a...

  • Page 69

    4-14 e 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 70

    4-15 e emk50011 cleaning 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 71

    4-16 e emk54110 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 72

    4-17 emu01329 replacing fuse if the fuse has blown on an electric start model, open the fuse holder and replace the fuse with a new one of proper amper- age. W be sure to use the specified fuse. An incorrect fuse or a piece of wire may allow excessive current flow. This could cause electrical system...

  • Page 73

    4-18 e emu00387 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 74

    4-19 eml08011 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 switc...

  • Page 75

    4-20 installation 1) apply yamaha marine grease a (water-resistant grease) to the pro- peller-shaft. 2) slide the propeller over the propeller- shaft. C c be sure to install the thrust washer before installing propeller, otherwise, lower case and propeller boss may be damaged. 3) tighten the propell...

  • Page 76

    4-21 e eml20010 changing gear oil w 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. 1) put the outboard in a vertical position (not tilted). W be sure the outboard is securely fastened to the...

  • Page 77

    4-22 e 5) with the outboard motor in an verti- cal position, using a flexible or pres- surized filling device, inject outboard motor hypoid gear oil (sae 90) into the oil drain plug hole. 6) when oil begins to flow out of the oil level plug hole, insert and tighten the oil level plug. 7) insert and ...

  • Page 78

    4-23 e to clean the fuel tank 1) empty the fuel tank into an approved gasoline (petrol) container. 2) pour a small amount of suitable sol- vent in the tank. Reinstall the cap and shake the tank. Drain the solvent completely. To clean the fuel filter 1) remove the screws holding the fuel hose joint a...

  • Page 79

    4-24 e eml26010 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 80

    4-25 e 1) check the electrolyte level at least once a month. Fill to the manufactur- er’s recommended level when neces- sary. Top up only with distilled water (or pure de-ionized water suitable to use in batteries). C c ordinary tap-water contains minerals harmhul to a battery, and should not be use...

  • Page 81

    4-26 e 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 82

    4-27 e 102025 102024* eml42011 motor exterior cleaning the outboard motor after use, wash the exterior of the out- board with fresh water. Flush the cooling system with fresh water. Cleaning cooling-water passages note: refer to cooling system flushing instruc- tions in “transporting and storing out...

  • Page 83: Chapter 5

    Emn00010 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 84: 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 85

    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 86

    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 87

    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 88: 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 89

    5-6 emn30410 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 90

    5-7 procedure 1) remove the top cowling. 2) remove the flywheel cover by remov- ing the bolts. 3) prepare the engine for starting. See “starting engine” for procedures. Be sure the engine is in neutral and that the lanyard is attached to the engine stop switch. The main switch must be on if the main...

  • Page 91

    5-8 emu00434 engine fails to operate emu00955* cold engine fails to start if a cold engine fails to start for prime start model, use the following procedure. W when starting or operating the engine, do not touch the ignition coil, high volt- age wire, spark plug cap or other electri- cal parts carry...

  • Page 92

    5-9 4) open the throttle slightly without shifting using the throttle control grip, neutral throttle lever or free accelera- tor. (it is necessary to change the throttle opening slightly depending on the engine temperature.) after the engine starts, return the throttle to the original position. 5) s...

  • Page 93

    5-10 emn50011 treatment of submerged motor if the outboard motor is submerged, immediately take it a yamaha dealer. Oth- erwise, some corrosion may begin almost immediately. If you cannot immediately take the outboard motor to a yamaha dealer, follow the procedure bellow for taking care to minimize ...

  • Page 94: – Memo –

    – memo – e 63d-9-15-5 4/18/01 10:43 am page 12.

  • Page 95: Chapter 6

    Emp00010 chapter 6 index index ........................................................6-1 1 2 3 4 5 6 e 63d-9-15-6 4/18/01 10:41 am page 1.

  • Page 96: Index

    6-1 e emp10010 index a adjusting idling speed ..........................4-16 adjusting trim angle..............................3-17 air vent screw...........................................2-2 b basic boating rules ..................................1-6 battery care......................................

  • Page 97

    6-2 e outboard motor serial number ..............1-1 overheat warning ....................................2-9 p periodic maintenance .............................4-9 power trim/tilt switch...............................2-6 power tim/tilt will not operate ................5-5 pre-operation checks .......

  • Page 98: 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 99

    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 100

    Emu00912* yamaha motor corporation, u.S.A. Outboard motor two year limited warranty yamaha motor corporation, u.S.A. Is proud of its heritage and reputation for producing products with high standards of quality and workmanship. Product excellence provides the cornerstone for our commitment to custom...

  • Page 101

    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 102

    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 103

    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 ...

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    63d-9-15-6 4/18/01 10:41 am page 10

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    63d-9-15 hyoshi 01.4.18 2:09 pm y [ w 2 (2,1).

  • Page 106: Own

    C40a/c50a printed in japan april 2001—0.5 × 1 ! 63d-28199-15 (40vet/50het) (e) printed on recycled paper own 63d-9-15 hyoshi 01.4.18 2:09 pm y [ w 1 (1,1).

  • Page 107: Lit-18626-04-75

    C40a/c50a lit-18626-04-75 c40a c50a owner’s manual u.S.A.Edition 63d-9-15 hyoshi 01.4.18 2:09 pm y [ w 1 (2,1).