- DL manuals
- Yamaha
- Outboard Motor
- 40V
- Owner's Manual
Yamaha 40V Owner's Manual
Summary of 40V
Page 1
Q q q q read this manual carefully before operating this outboard motor. Owner’s manual 40v 50h 63b-28199-2g-e0
Page 2
Emu25052 read this manual carefully before operating this outboard motor. Keep this manual onboard in a waterproof bag when boating. This manual should stay with the outboard motor if it is sold..
Page 3: Important Manual Information
Important manual information emu25105 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 ob- tain maximum enjoyment from your ...
Page 4: Table of Contents
Table of contents safety information............................. 1 outboard motor safety .................... 1 propeller............................................ 1 rotating parts.................................... 1 hot parts ........................................... 1 electric shock ..........
Page 5: Table of Contents
Table of contents hour meter ...................................... 25 overheat-alert indicator .................. 25 digital speedometer ...................... 25 speedometer .................................. 26 fuel gauge ...................................... 26 trip meter / clock / voltmeter .....
Page 6: Table of Contents
Table of contents checking fuel filter .......................... 64 inspecting idling speed ................... 64 checking wiring and connectors ..... 65 checking propeller .......................... 65 removing propeller ......................... 65 installing propeller .............................
Page 7: Safety Information
1 safety information emu33622 outboard motor safety observe these precautions at all times. Emu36501 propeller people can be injured or killed if they come in contact with the propeller. The propeller can keep moving even when the motor is in neutral, and sharp edges of the propeller can cut even wh...
Page 8: Safety Information
Safety information 2 emu33820 gasoline exposure and spills take care not to spill gasoline. If gasoline spills, wipe it up immediately with dry rags. Dispose of rags properly. If any gasoline spills onto your skin, immedi- ately wash with soap and water. Change clothing if gasoline spills on it. If ...
Page 9: Safety Information
Safety information 3 dling and lead to an accident, capsizing or swamping. Emu33772 avoid collisions scan constantly for people, objects, and oth- er boats. Be alert for conditions that limit your visibility or block your vision of others. Operate defensively at safe speeds and keep a safe distance ...
Page 10: General Information
4 general information emu25171 identification numbers record emu25183 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 ...
Page 11: General Information
General information 5 zmu01697.
Page 12: General Information
General information 6 emu33520 read manuals and labels before operating or working on this motor: ● read this manual. ● read any manuals supplied with the boat. ● read all labels on the outboard motor and the boat. If you need any additional information, contact your yamaha dealer. Emu33831 warning ...
Page 13: General Information
General information 7 emu33912 contents of labels the above warning labels mean as follows. 1 warning ewm01691 emergency starting does not have start- in-gear protection. Ensure shift control is in neutral before starting engine. 2 warning ewm01681 ● keep hands, hair, and clothing away from rotating...
Page 14: General Information
General information 8 emu33843 symbols the following symbols mean as follows. Notice/warning read owner’s manual hazard caused by continuous rotation electrical hazard remote control lever/gear shift lever operat- ing direction, dual direction engine start/ engine cranking zmu05696 zmu05664 zmu05665...
Page 15: Specifications
9 specifications and requirements emu31480 specifications tip: “(al)” stated in the specification data below represents the numerical value for the alumi- num propeller installed. Likewise, “(sus)” represents the value for stainless steel propeller installed and “(pl)” for plastic propeller installe...
Page 16: Installation Requirements
Specifications and requirements 10 1.85 (24/13) trim and tilt system: 40vmhd hydro tilt 50het power trim and tilt 50hmhd hydro tilt propeller mark: g fuel and oil: recommended fuel: regular unleaded gasoline fuel tank capacity: 24 l (6.34 us gal, 5.28 imp.Gal) recommended engine oil: yamalube 2-stro...
Page 17: Battery Requirements
Specifications and requirements 11 emu25694 battery requirements emu25721 battery specifications the engine cannot be started if battery volt- age is too low. Emu36290 mounting battery mount the battery holder securely in a dry, well-ventilated, vibration-free location in the boat. Warning! Do not p...
Page 18: Start-In-Gear Protection
Specifications and requirements 12 emu25770 start-in-gear protection yamaha outboard motors or yamaha-ap- proved remote control units are equipped with start-in-gear protection device(s). This feature permits the engine to be started only when it is in neutral. Always select neutral before starting ...
Page 19: Motor Disposal Requirements
Specifications and requirements 13 boat bottom can be coated with an anti-foul- ing paint approved for your area to inhibit marine growth. Do not use anti-fouling paint which includes copper or graphite. These paints can cause more rapid engine corrosion. Emu36341 motor disposal requirements never i...
Page 20: Components
14 components emu2579m components diagram tip: * may not be exactly as shown; also may not be included as standard equipment on all mod- els. 40vmhd, 50hmhd trip time batt km/h knot mph km mile speed yamaha set mode 1 2 3 4 5 6 7 16 17 18 19 20 22 21 8 9 10 11 12 13 14 15 zmu04999 1. Manual starter ...
Page 21: Components
Components 15 50het emu25802 fuel tank if your model was equipped with a portable fuel tank, its function is as follows. Warning ewm00020 the fuel tank supplied with this engine is its dedicated fuel reservoir and must not be used as a fuel storage container. Com- mercial users should conform to rel...
Page 22: Components
Components 16 emu25830 fuel joint this joint is used to connect the fuel line. Emu25841 fuel gauge this gauge is located on either the fuel tank cap or on the fuel joint base. It shows the ap- proximate amount of fuel remaining in the tank. Emu25850 fuel tank cap this cap seals the fuel tank. When r...
Page 23: Components
Components 17 emu26201 neutral interlock trigger to shift out of neutral, first pull the neutral in- terlock trigger up. Emu26211 neutral throttle lever to open the throttle without shifting into ei- ther forward or reverse, put the remote con- trol lever in the neutral position and lift the neutral...
Page 24: Components
Components 18 emu25941 throttle grip the throttle grip is on the tiller handle. Turn the grip counterclockwise to increase speed and clockwise to decrease speed. Emu25961 throttle indicator the fuel consumption curve on the throttle indicator shows the relative amount of fuel consumed for each throt...
Page 25: Components
Components 19 when constant speed is desired, tighten the adjuster to maintain the desired throttle set- ting. Emu25993 engine shut-off cord (lanyard) and clip the clip must be attached to the engine shut- off switch for the engine to run. The cord should be attached to a secure place on the operato...
Page 26: Components
Components 20 emu26011 choke knob for pull type to supply the engine with the rich fuel mix- ture required to start, pull out this knob. Emu26070 manual starter handle to start the engine, first gently pull the han- dle out until resistance is felt. From that posi- tion, then pull the handle straigh...
Page 27: Components
Components 21 tip: ● check the tiller handle for smooth move- ment when the lever is turned to the star- board side “b”. ● do not apply lubricants such as grease to the friction areas of the steering friction ad- juster. Emu26143 power trim and tilt switch on remote control or tiller handle the powe...
Page 28: Components
Components 22 emu26261 trim rod (tilt pin) the position of the trim rod determines the minimum trim angle of the outboard motor in relation to the transom. Emu26312 tilt lock mechanism the tilt lock mechanism is used to prevent the outboard motor from lifting out of the wa- ter when in reverse gear....
Page 29: Components
Components 23 emu26303 alert indicator if the engine develops a condition which is cause for alert, the indicator lights up. For details on how to read the alert indicator, see page 29. 1. Alert indicator 1 zmu04922.
Page 30: Instruments and Indicators
24 instruments and indicators emu36014 indicators emu36033 overheat-alert indicator if the engine temperature rises too high, this indicator will light up. For further information on reading the indicator, see page 29. Notice ecm00052 do not continue to run the engine if the overheat-alert indicator...
Page 31: Instruments and Indicators
Instruments and indicators 25 emu26651 hour meter this meter shows the number of hours the engine has been run. It can be set to show the total number of hours or the number of hours for the current trip. The display can also be turned on and off. To change the display format, press the “ ” (mode) b...
Page 32: Instruments and Indicators
Instruments and indicators 26 emu36061 speedometer the speedometer displays km/h, mph, or knots, according to operator preference. Se- lect the desired units of measurement by set- ting the selector switch on the back of the gauge. See the illustration for settings. Emu26712 fuel gauge eight segment...
Page 33: Instruments and Indicators
Instruments and indicators 27 play will begin blinking. 3. Press the “ ” (mode) button until the desired hour is displayed. 4. Press the “ ” (set) button again, the minute display will begin blinking. 5. Press the “ ” (mode) button until the desired minute is displayed. 6. Press the “ ” (set) button...
Page 34: Instruments and Indicators
Instruments and indicators 28 emu26591 analog speedometer this gauge shows the boat speed in km/h and mph. Emu26611 analog trim meter this gauge shows the trim angle of your out- board motor. Memorize the trim angles that work best for your boat under different conditions. Adjust the trim angle to t...
Page 35: Engine Control System
29 engine control system emu26803 alert system notice ecm00091 do not continue to operate the engine if a alert device has activated. Consult your yamaha dealer if the problem cannot be located and corrected. Emu2681a overheat alert this engine has an overheat-alert device. If the engine temperature...
Page 36: Installation
30 installation emu26902 installation the information presented in this section is intended as reference only. It is not possible to provide complete instructions for every possible boat and motor combination. Prop- er mounting depends in part on experience and the specific boat and motor combinatio...
Page 37: Installation
Installation 31 notice ecm01631 ● check that the idle hole stays high enough to keep out water getting inside engine even if the boat is in stationary with maximum load. ● incorrect engine height or obstructions to the smooth flow of water (such as the design or condition of the boat, or ac- cessori...
Page 38: Installation
Installation 32 least the same quality of material and strength and must be tightened se- curely. After tightening, test run the engine and check their tightness. [ewm00651] 1. Bolts zmu03185 1 1.
Page 39: Operation
33 operation emu36381 first-time operation emu30174 breaking in engine your new engine requires a period of break- in to allow mating surfaces of moving parts to wear in evenly. Correct break-in will help en- sure proper performance and longer engine life. Notice: failure to follow the break-in proc...
Page 40: Operation
Operation 34 emu37151 fuel level be sure you have plenty of fuel for your trip. A good rule is to use 1/3 of your fuel to get to the destination, 1/3 to return, and to keep 1/ 3 as an emergency reserve. With the boat level on a trailer or in the water, turn the key to “ ” (on) and check the fuel lev...
Page 41: Operation
Operation 35 with no binding or excessive free play. ● operate the throttle levers several times to make sure there is no hesitation in their travel. Operation should be smooth over the complete range of motion, and each le- ver should return completely to the idle po- sition. ● look for loose or da...
Page 42: Operation
Operation 36 emu34581 power trim and tilt system warning ewm01930 ● 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 motor accidentally falls. ● body parts can be crushed between the motor and the clamp bracket w...
Page 43: Operation
Operation 37 the fuel tank cap. 3. Remove the portable tank from the boat. 4. Be sure you are in a well-ventilated out- door area, either securely moored or trailered. 5. Do not smoke and keep away from sparks, flames, static electric discharge, or other sources of ignition. 6. If you use a portable...
Page 44: Operation
Operation 38 if equipped with a portable fuel tank 1. Pour oil into the portable fuel tank, and then add gasoline. 2. Replace the fuel tank cap and close tightly. 3. Shake the fuel tank to mix the fuel thor- oughly. 4. Make sure that the oil and gasoline are mixed. If equipped with a built-in fuel t...
Page 45: Operation
Operation 39 symptoms include nausea, dizziness, and drowsiness. Keep cockpit and cab- in areas well ventilated. Avoid blocking exhaust outlets. 1. If there is an air vent screw on the fuel tank cap, loosen it 2 or 3 turns. 2. If there is a fuel joint on the motor, firmly connect the fuel line to th...
Page 46: Operation
Operation 40 where it could become entangled, pre- venting it from functioning. ● avoid accidentally pulling the cord dur- ing normal operation. Loss of engine power means the loss of most steering control. Also, without engine power, the boat could slow rapidly. This could cause people and objects ...
Page 47: Operation
Operation 41 6. After the engine starts, slowly return the manual starter handle to its original po- sition before releasing it. 7. Slowly return the throttle grip to the fully closed position. Tip: ● when the engine is cold, it needs to be warmed up. For further information, see page 44. ● if the e...
Page 48: Operation
Operation 42 3. Place the throttle grip in the “ ” (start) position. After the engine starts, return the throttle to the fully closed po- sition. 4. Turn the main switch to “ ” (start), and hold it for a maximum of 5 seconds. 5. Immediately after the engine starts, re- lease the main switch and allo...
Page 49: Operation
Operation 43 tip: the start-in-gear protection device prevents the engine from starting except when in neu- tral. 2. Attach the engine shut-off cord to a se- cure place on your clothing, or your arm or leg. Then install the clip on the other end of the cord into the engine shut-off switch. 3. Turn t...
Page 50: Operation
Operation 44 ter pump is pumping water through the cool- ing passages. If the cooling passages are frozen, it may take a while for water to start flowing out of the pilot hole. Notice ecm01810 if water is not flowing out of the pilot hole at all times while the engine is running, overheating and ser...
Page 51: Operation
Operation 45 2. Move the remote control lever / gear shift lever firmly and crisply forward (for forward gear) or backward (for reverse gear) [about 35° (a detent can felt) for re- mote control models]. Be sure to check that the tilt lock lever is in the lock/down position (if equipped) before opera...
Page 52: Operation
Operation 46 emu31742 stopping boat warning ewm01510 ● do not use the reverse function to slow down or stop the boat as it could cause you to lose control, be ejected, or im- pact the steering wheel or other parts of the boat. This could increase the risk of serious injury. It could also damage the ...
Page 53: Operation
Operation 47 3. Tighten the air vent screw on the fuel tank cap (if equipped). 4. Remove the key if the boat will be left unattended. Tip: the engine can also be stopped by pulling the cord and removing the clip from the en- gine shut-off switch, then turning the main switch to “ ” (off). Emu27862 t...
Page 54: Operation
Operation 48 when the motor is trimmed or tilted. ● use caution when trying a trim position for the first time. Increase speed gradu- ally and watch for any signs of instabil- ity or control problems. Improper trim angle can cause loss of control. ● if equipped with a power trim and tilt switch loca...
Page 55: Operation
Operation 49 cy to steer to one side or the other. Compen- sate for this as you steer. The trim tab can also be adjusted to help offset this effect. When the bow of the boat is down, it is easier to accelerate from a standing start onto plane. Bow up too much trim-out puts the bow of the boat too hi...
Page 56: Operation
Operation 50 few minutes. Otherwise fuel may leak. Notice ecm00241 ● before tilting the outboard motor, stop the engine by following the procedure on page 46. Never tilt the outboard mo- tor while the engine is running. Severe damage from overheating can result. ● do not tilt up the engine by pushin...
Page 57: Operation
Operation 51 2. Press the power trim and tilt switch “ ” (up) until the outboard motor has tilted up completely. 3. Pull the tilt support lever toward you to support the engine. Warning! After tilting the outboard motor, be sure to support it with the tilt support knob or tilt support lever. Otherwi...
Page 58: Operation
Operation 52 2. Hold the rear of the top cowling with one hand, tilt the outboard motor up slightly and pull out the tilt support knob or re- turn the tilt support lever. 3. Slowly tilt the outboard motor down. 4. Place the tilt lock lever in the lock posi- tion. Emu33120 procedure for tilting down ...
Page 59: Operation
Operation 53 the water, increasing the chance of ac- cident and personal injury. Notice ecm00260 do not tilt the outboard motor up so that the cooling water inlet on the lower unit is above the surface of the water when set- ting up for and cruising in shallow water. Otherwise severe damage from ove...
Page 60: Operation
Operation 54 2. Slightly tilt the outboard motor up to the desired position using the power trim and tilt switch. Warning! Using the power trim and tilt switch on the bot- tom cowling while the boat is moving or engine is on could increase the risk of falling overboard and could distract the operato...
Page 61: Maintenance
55 maintenance emu28227 transporting and storing outboard motor warning ewm00693 ● use care when transporting fuel tank, whether in a boat or car. ● do not fill fuel container to maximum capacity. Gasoline will expand consid- erably as it warms up and can build up pressure in the fuel container. Thi...
Page 62: Maintenance
Maintenance 56 above the level of the anti-cavitation plate. Notice: if the fresh water level is below the level of the anti-cavita- tion plate, or if the water supply is in- sufficient, engine seizure may occur. [ecm00291] 5. Cooling system flushing is essential to prevent the cooling system from c...
Page 63: Maintenance
Maintenance 57 emu28460 checking painted surface of motor check the motor for scratches, nicks, or flak- ing paint. Areas with damaged paint are more likely to corrode. If necessary, clean and paint the areas. A touch-up paint is avail- able from your yamaha dealer. Emu2847c periodic maintenance war...
Page 64: Maintenance
Maintenance 58 at 50 hours, do it instead at 25 hours. This will help prevent more rapid deterioration of engine components..
Page 65: Maintenance
Maintenance 59 emu34445 maintenance chart 1 tip: ● refer to the sections in this chapter for explanations of each owner-specific action. ● the maintenance cycle on these charts assume usage of 100 hours per year and regular flushing of the cooling water passages. Maintenance frequency should be adju...
Page 66: Maintenance
Maintenance 60 fuel line(high pres- sure) inspection or replace- ment as necessary fuel line(low pres- sure) inspection fuel line(low pres- sure) inspection or replace- ment as necessary fuel pump inspection or replace- ment as necessary fuel/engine oil leakage inspection gear oil replacement greasi...
Page 67: Maintenance
Maintenance 61 emu34451 maintenance chart 2 (yamaha) meter/gauge inspection (yamaha) fuel tank inspection and clean- ing as necessary item actions every 1000 hours exhaust guide/exhaust manifold inspection or replace- ment as necessary item actions initial every 20 hours (3 months) 100 hours (1 year...
Page 68: Maintenance
Maintenance 62 emu28941 greasing yamaha grease a (water resistant grease) yamaha grease d (corrosion resistant grease; for propeller shaft) 40vmhd, 50hmhd zmu03415.
Page 69: Maintenance
Maintenance 63 50het emu28956 cleaning and adjusting spark plug the spark plug is an important engine com- ponent and is easy to inspect. The condition of the spark plug can indicate something about the condition of the engine. For exam- ple, if the center electrode porcelain is very white, this cou...
Page 70: Maintenance
Maintenance 64 sulator. A damaged insulator could allow external sparks, which could lead to explosion or fire. [ewm00561] 3. Be sure to use the specified spark plug, otherwise the engine may not operate properly. Before fitting the spark plug, measure the electrode gap with a wire thickness gauge; ...
Page 71: Maintenance
Maintenance 65 1. Start the engine and allow it to warm up fully in neutral until it is running smooth- ly. 2. Once the engine has warmed up, verify whether the idle speed is set to specifi- cation. For idle speed specifications, see page 9. If you have difficulty verify- ing the idle speed, or the ...
Page 72: Maintenance
Maintenance 66 not use your hand to hold the propel- ler when loosening the propeller nut. [ewm01890] 3. Remove the propeller, washer (if equipped), and thrust washer. Emu30672 installing propeller emu29233 spline models notice ecm00500 be sure to use a new cotter pin and bend the ends over securely...
Page 73: Maintenance
Maintenance 67 1. Tilt the outboard motor so that the gear oil drain screw is at the lowest point pos- sible. 2. Place a suitable container under the gear case. 3. Remove the gear oil drain screw and gasket. Notice: if there is an exces- sive quantity of metal particles on the magnetic gear oil drai...
Page 74: Maintenance
Maintenance 68 yamaha dealer. ● keep away from sparks, cigarettes, flames, or other sources of ignition when cleaning the fuel tank. ● remove the fuel tank from the boat be- fore cleaning it. Work only outdoors in an area with good ventilation. ● wipe up any spilled fuel immediately. ● reassemble th...
Page 75: Maintenance
Maintenance 69 emu29322 checking battery (for electric start models) warning ewm01900 battery electrolytic fluid is poisonous and caustic, and batteries generate ex- plosive hydrogen gas. When working near the battery: ● wear protective eye gear and rubber gloves. ● do not smoke or bring any other s...
Page 76: Maintenance
Maintenance 70 emu29333 connecting the battery warning ewm00570 mount the battery holder securely in a dry, well-ventilated, vibration-free loca- tion in the boat. Install a fully charged bat- tery in the holder. Notice ecm01123 reversal of the battery cables will dam- age the electrical parts. 1. M...
Page 77: Trouble Recovery
71 trouble recovery emu29427 troubleshooting a problem in the fuel, compression, or igni- tion systems can cause poor starting, loss of power, or other problems. This section de- scribes basic checks and possible remedies, and covers all yamaha outboard motors. Therefore some items may not apply to ...
Page 78: Trouble Recovery
Trouble recovery 72 q. Is fuel system obstructed? A. Check for pinched or kinked fuel line or other obstructions in fuel system. Q. Is fuel contaminated or stale? A. Fill tank with clean, fresh fuel. Q. Is fuel filter clogged? A. Clean or replace filter. Q. Have ignition parts failed? A. Have servic...
Page 79: Trouble Recovery
Trouble recovery 73 q. Is load on boat improperly distributed? A. Distribute load to place boat on an even plane. Q. Is water pump or thermostat faulty? A. Have serviced by a yamaha dealer. Q. Is there excess water in fuel filter cup? A. Drain filter cup. Engine power loss. Q. Is propeller damaged? ...
Page 80: Trouble Recovery
Trouble recovery 74 q. Is fuel joint connection incorrect? A. Connect correctly. Q. Is heat range of spark plug incorrect? A. Inspect spark plug and replace it with rec- ommended type. Q. Is high pressure fuel pump drive belt bro- ken? A. Have serviced by a yamaha dealer. Q. Is engine not responding...
Page 81: Trouble Recovery
Trouble recovery 75 consult your yamaha dealer if the new fuse immediately blows again. Emu29524 power trim and tilt will not operate if the engine cannot be tilted up or down with the power trim and tilt because of a dis- charged battery or a failure with the power trim and tilt unit, the engine ca...
Page 82: Trouble Recovery
Trouble recovery 76 wheel or other moving parts when the engine is running. Do not install the starter mechanism or top cowling after the engine is running. ● do not touch the ignition coil, spark plug wire, spark plug cap, or other elec- trical components when starting or op- erating the motor. You...
Page 83: Trouble Recovery
Trouble recovery 77 rotor and wind the rope several turns around the flywheel clockwise. 7. Give a strong pull straight out to crank and start the engine. Repeat if neces- sary. Emu29671 engine fails to operate emu29706 cold engine fails to start if the engine fails to start when it is cold, use the...
Page 84: Trouble Recovery
Trouble recovery 78 6. Turn the main switch to “ ” (start). Notice: never turn the main switch to “ ” (start) while the engine is running. Do not keep the starter mo- tor turning for more than 5 seconds. If the starter motor is turned continu- ously for more than 5 seconds, the battery will be quick...
Page 86
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