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- Outboard Motor
- F40
- Owner's Manual
Yamaha F40 Owner's Manual
Summary of F40
Page 1
F40 owner’s manual 67c-28199-18 u.S.A.Edition lit-18626-07-10 67c-9-18-hyoshi 06.3.3 10:15 am ページ 1.
Page 2
Emu25060 zmu01690 read this owner’s manual carefully before operating your outboard motor. 67c-9-18-hyoshi 06.3.3 10:15 am ページ 2.
Page 3: Important Manual Information
Important manual information emu31280 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 general information .......................... 1 identification numbers record .......... 1 outboard motor serial number .......... 1 key number....................................... 1 emission control information ........... 1 north american models..................... 1 star lab...
Page 5: Table of Contents
Table of contents manual start and electric start models .......................................... 35 shifting .......................................... 35 forward (tiller handle and remote control models) ............................. 35 reverse (automatic reverse lock and power trim and tilt mod...
Page 6: Table of Contents
Table of contents yamaha motor corporation, u.S.A. Four-stroke outboard motor three-year limited warranty ................................ 79 important warranty information if you use your yamaha outside the usa or canada ...................... 81.
Page 7: General Information
1 general information emu25170 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 8: General Information
General information 2 emu25262 manufactured date label this label is attached to the clamp bracket or the swivel bracket. Emu25272 star labels your outboard motor is labeled with a cali- fornia air resources board (carb) star la- bel. See below for a description of your particular label. Emu25280 on...
Page 9: General Information
General information 3 emu25300 three stars—ultra low emission the three-star label identifies engines that meet the air resources board’s 2008 ex- haust emission standards. Engines meeting these standards have 65% lower emissions than one star-low-emission engines. Emu25362 safety information ● befo...
Page 10: General Information
General information 4 the switch, stopping the engine. ● know the marine laws and regulations where you will be boating—and obey them. For basic boating rules, see “rules of the road” on page 5. ● stay informed about the weather. Check weather forecasts before boating. Avoid boating in hazardous wea...
Page 11: General Information
General information 5 emu25401 label warning ewm01260 ● 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 rotating parts while engine is ru...
Page 12: General Information
General information 6 stand-on vessel the vessel with the right-of-way has the duty to continue its course and speed, except to avoid an immediate collision. When you maintain your direction and speed, the other vessel will be able to determine how best to avoid you. Give-way vessel the vessel which...
Page 13: General Information
General information 7 risk of collision, the vessel which has the oth- er on the starboard (right) side must keep out of the way of the other. If the other vessel is on your right, you must keep out of its way; you are the give-way vessel. If the other vessel is on your port (left) side, remember th...
Page 14: General Information
General information 8 ter into port, and black buoys are to port (left) side. When navigating out of port, your posi- tion with respect to the buoys should be re- versed; red buoys should be to port and black buoys to starboard. Many bodies of water used by boaters are entirely within the boundaries...
Page 15: General Information
General information 9 emu25540 fueling instructions warning ewm00010 gasoline and its vapors are high- ly 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. Refue...
Page 16: General Information
General information 10 dry rags. ● do not overfill the fuel tank. ● tighten the filler cap securely after re- fueling. ● if you should swallow some gasoline, inhale a lot of gasoline vapor, or get gasoline in your eyes, get immediate medical attention. ● if any gasoline spills onto your skin, im- me...
Page 17: General Information
General information 11 emu25690 battery requirement caution: ecm01060 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...
Page 18: General Information
General information 12 note: select a propeller which will allow the engine to reach the middle or upper half of the oper- ating range at full throttle with the maximum boat load. If operating conditions such as light boat loads then allow the engine r/min to rise above the maximum recommended range...
Page 19: Basic Components
13 basic components emu25799 main components note: * may not be exactly as shown; also may not be included as standard equipment on all mod- els. F40 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...
Page 20: Basic Components
Basic components 14 its dedicated fuel reservoir and must not be used as a fuel storage container. Com- mercial users should conform to relevant licensing or approval authority regula- tions. Emu25830 fuel joint this joint is used to connect the fuel line. Emu25841 fuel gauge this gauge is located o...
Page 21: Basic Components
Basic components 15 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 n...
Page 22: Basic Components
Basic components 16 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...
Page 23: Basic Components
Basic components 17 when constant speed is desired, tighten the adjuster to maintain the desired throttle set- ting. Emu25990 engine stop lanyard switch the lock plate must be attached to the en- gine stop switch for the engine to run. The lanyard should be attached to a secure place on the operator...
Page 24: Basic Components
Basic components 18 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 straight out quickly to crank the engine. Emu26090 main switch the main switch controls the ignition system; its operation i...
Page 25: Basic Components
Basic components 19 if the resistance does not increase even when the lever is turned to the port side “a”, make sure that the nut is tightened to the specified torque. Note: ● check the tiller handle for smooth move- ment when the lever is turned to the star- board side “b”. ● do not apply lubrican...
Page 26: Basic Components
Basic components 20 emu26151 power trim and tilt switch on bottom engine cowling the power trim and tilt switch is located on the side of the bottom engine cowling. Press- ing the switch “ ” (up) trims the outboard motor up, then tilts it up. Pressing the switch “ ” (down) tilts the outboard motor d...
Page 27: Basic Components
Basic components 21 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. To lock it, set the tilt lock lever in the “ ” (lock) position. To release, push the tilt lock lever in the “ ” (release) position. Emu...
Page 28: Basic Components
Basic components 22 emu26302 warning indicator if the engine develops a condition which is cause for warning, the indicator lights up. For details on how to read the warning indicator, see page 25. Emu26470 tachometer this gauge shows the engine speed and has the following functions. Emu26491 digita...
Page 29: Basic Components
Basic components 23 note: the water separator and engine trouble warning indicators only operate when the en- gine is equipped with the appropriate func- tions. Emu26503 low oil pressure warning indicator if oil pressure drops too low, this indicator will flash. For further information, see page 25....
Page 30: Basic Components
Basic components 24 emu26581 overheat warning indicator (digital type) if the engine temperature rises too high, the warning indicator will start to blink. For fur- ther information on reading the indicator, see page 25. Caution: ecm00050 do not continue to run the engine if the overheat warning ind...
Page 31: Basic Components
Basic components 25 ● changing the display format ● pressing the “ ” (mode) button chang- es the display format in the following pat- tern: ● total hours → trip hours → display off ● resetting the trip hours ● simultaneously pressing the “ ” (set) and “ ” (mode) buttons for more than 1 second while ...
Page 32: Basic Components
Basic components 26 emu30167 low oil pressure warning if the oil pressure drops too low, the warning device will activate. Activation of warning device ● the engine speed will automatically de- crease to about 2000 r/min. ● if equipped with a low oil pressure warning indicator, it will light or blin...
Page 33: Operation
27 operation emu26901 installation caution: ecm00110 incorrect engine height or obstructions to smooth water flow (such as the design or condition of the boat, or accessories such as transom ladders or depth finder transducers) can create airborne water spray while the boat is cruising. Severe engin...
Page 34: Operation
Operation 28 motor greatly affects the water resistance. If the mounting height is too high, cavitation tends to occur, thus reducing the propulsion; and if the propeller tips cut the air, the engine speed will rise abnormally and cause the en- gine to overheat. If the mounting height is too low, th...
Page 35: Operation
Operation 29 line fumes. ● check fuel line connections to be sure they are tight (if equipped yamaha fuel tank or boat tank). ● be sure the fuel tank is positioned on a se- cure, flat surface, and that the fuel line is not twisted or flattened, or likely to contact sharp objects (if equipped yamaha ...
Page 36: Operation
Operation 30 tank. Wipe up any spilled fuel. Emu27270 ring free fuel additive gasoline is a precise blend of many different substances, each chosen to give certain characteristics. Gasoline blends have been changing in recent years in response to con- cerns about pollution and resulting emis- sions ...
Page 37: Operation
Operation 31 connect the fuel line to the joint. Then firmly connect the other end of the fuel line to the joint on the fuel tank. 3. If a steering friction adjuster is provided on your outboard motor, securely attach the fuel line to the fuel line clamp. Note: during engine operation place the tank...
Page 38: Operation
Operation 32 lanyard where it could become entan- gled, preventing it from functioning. ● avoid accidentally pulling the lanyard during normal operation. Loss of en- gine power means the loss of most steering control. Also, without engine power, the boat could slow rapidly. This could cause people a...
Page 39: Operation
Operation 33 arm or leg. Then install the lock plate on the other end of the lanyard into the en- gine stop switch. Warning ewm00120 ● attach the engine stop switch lanyard to a secure place on your clothing, or your arm or leg while operating. ● do not attach the lanyard to clothing that could tear...
Page 40: Operation
Operation 34 note: ● when the engine is cold, it needs to be warmed up. For further information, see page 35. ● if the engine is warm and fails to start, open the throttle slightly and try to start the engine again. If the engine still fails to start, see page 70. Emu27662 electric start and remote ...
Page 41: Operation
Operation 35 quickly discharged, thus making it im- possible to start the engine. The starter can also be damaged. If the engine will not start after 5 seconds of cranking, return the main switch to “ ” (on), wait 10 seconds, then crank the engine again. Note: ● when the engine is cold, it needs to ...
Page 42: Operation
Operation 36 2. Move the gear shift lever quickly and firmly from neutral to forward. Remote control models 1. Pull up the neutral interlock trigger (if equipped) and move the remote control lever quickly and firmly from neutral to forward. Emu27785 reverse (automatic reverse lock and power trim and...
Page 43: Operation
Operation 37 remote control models 1. Pull up the neutral interlock trigger (if equipped) and move the remote control lever quickly and firmly from neutral to reverse. Emu27796 reverse (manual tilt and hydro tilt models) warning ewm00190 when operating in reverse, go slowly. Do not open the throttle...
Page 44: Operation
Operation 38 remote control models 1. Check that the tilt lock lever is in the lock position. 2. Pull up the neutral interlock trigger (if equipped) and move the remote control lever quickly and firmly from neutral to reverse. Emu27820 stopping engine before stopping the engine, first let it cool of...
Page 45: Operation
Operation 39 2. After stopping the engine, disconnect the fuel line if there is a fuel joint on the outboard motor. 3. Tighten the air vent screw on the fuel tank cap (if equipped). 4. Remove the key if the boat will be left unattended. Note: the engine can also be stopped by pulling the lanyard and...
Page 46: Operation
Operation 40 emu27882 adjusting trim angle power trim and tilt models warning ewm00751 ● be sure all people are clear of the out- board motor when adjusting the tilt an- gle, also be careful not to pinch any body parts between the drive unit and clamp bracket. ● use caution when trying a trim positi...
Page 47: Operation
Operation 41 “ ” (up). To lower the bow (trim-in), press the switch “ ” (down). Make test runs with the trim set to different angles to find the position that works best for your boat and operating conditions. Emu27891 adjusting trim angle for hydro tilt models warning ewm00490 ● stop the engine bef...
Page 48: Operation
Operation 42 bow down too much trim-in causes the boat to “plow” through the water, decreasing fuel economy and making it hard to increase speed. Oper- ating with excessive trim-in at higher speeds also makes the boat unstable. Resistance at the bow is greatly increased, heightening the danger of “b...
Page 49: Operation
Operation 43 2. Disconnect the fuel line from the out- board motor. 3. Place the tilt lock lever in the release po- sition. 4. Hold the rear of the top cowling with one hand, tilt the engine up, and turn the tilt support lever toward you or tilt support knob into the clamp bracket, and then place th...
Page 50: Operation
Operation 44 3. Press the power trim and tilt switch / power tilt switch “ ” (up) until the out- board motor has tilted up completely. 4. Push the tilt support knob into the clamp bracket or pull the tilt support lever to- ward you to support the engine. Warning ewm00260 after tilting the outboard m...
Page 51: Operation
Operation 45 from marine growth and corrosion which could damage the power trim and tilt mechanism. Emu28041 procedure for tilting down (manual and hydro tilt models) 1. Release the tilt lock lever. 2. Hold the rear of the top cowling with one hand, tilt the outboard motor up slightly and pull out t...
Page 52: Operation
Operation 46 emu28060 cruising in shallow water the outboard motor can be tilted up partially to allow operation in shallow water. Emu28080 hydro tilt models the outboard motor can be tilted up partially to allow operation in shallow water. Warning ewm00270 ● place the gear shift in neutral before u...
Page 53: Operation
Operation 47 2. Pull the tilt lock lever up to the release position. 3. Slightly tilt the outboard motor up to the desired position and push the tilt lock le- ver down to the lock position. 4. To return the outboard motor to the nor- mal running position, pull the tilt lock le- ver up to the release...
Page 54: Operation
Operation 48 2. Slightly tilt the outboard motor up to the desired position using the power trim and tilt switch / power tilt switch. 3. To return the outboard motor to the nor- mal running position, press the power trim and tilt switch / power tilt switch and slowly tilt the outboard motor down. Em...
Page 55: Maintenance
49 maintenance emu31480 specifications note: “(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 installed. Emu28218 dimens...
Page 56: Maintenance
Maintenance 50 recommended fuel: regular unleaded gasoline min. Pump octane: 86 fuel tank capacity: 25 l (6.60 us gal) (5.50 imp.Gal) recommended engine oil: 4-stroke outboard motor oil engine oil grade api: api se, sf, sg, sh, sj, sl engine oil type sae: sae10w30 or sae10w40 lubrication: wet sump e...
Page 57: Maintenance
Maintenance 51 lowing procedures. Caution: ecm01080 ● to prevent problems which can be caused by oil entering the cylinder from the sump, keep the outboard motor in the attitude shown when transporting and storing it. If storing or transporting the outboard motor on its side (not up- right), put it ...
Page 58: Maintenance
Maintenance 52 gine will be damaged from overheating. Before starting the engine, be sure to supply water to the cooling water passag- es. Caution: ecm00290 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. 6. ...
Page 59: Maintenance
Maintenance 53 dling or working near batteries. Antidote (external): ● skin - flush with water. ● eyes - flush with water for 15 minutes and get immediate medical attention. Antidote (internal): ● drink large quantities of water or milk followed by milk of magnesia, beaten egg, or vegetable oil. Get...
Page 60: Maintenance
Maintenance 54 and let the water flush through the cool- ing passages for about 15 minutes. Turn off the water and disconnect the garden hose adapter from the garden hose con- nector. 4. Reinstall the garden hose connector onto the fitting on the bottom cowling. Tighten the connector securely. Cauti...
Page 61: Maintenance
Maintenance 55 yamaha genuine parts and accessories are available from your yamaha dealer..
Page 62: Maintenance
Maintenance 56 emu28522 maintenance chart frequency of maintenance operations may be adjusted according to the operating condi- tions, but the following table gives general guidelines. Refer to the sections in this chapter for explanations of each owner-specific action. Note: when operating in salt ...
Page 63: Maintenance
Maintenance 57 emu28874 maintenance chart (additional) emu28910 note: when using lead or high-sulfur gasoline, inspecting valve clearance may be required more frequently than every 500 hours. Water pump inspection / replace- ment engine oil inspection / change oil filter (cartridge) change spark plu...
Page 64: Maintenance
Maintenance 58 emu28931 greasing yamaha marine grease (water resistant grease) f40 emu28952 cleaning and adjusting spark plug warning ewm00560 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 explos...
Page 65: Maintenance
Maintenance 59 adjust the gap to specification if necessary. 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 plu...
Page 66: Maintenance
Maintenance 60 emu28990 checking fuel filter check the fuel filter periodically. The fuel fil- ter is a one piece, disposable type. If foreign matter is found in the filter, replace it. For re- placement of the fuel filter, consult your yamaha dealer. Emu29041 inspecting idling speed warning ewm0045...
Page 67: Maintenance
Maintenance 61 note: change the engine oil when the oil is still warm. 1. Put the outboard motor in an upright po- sition (not tilted). 2. Prepare a suitable container that holds a larger amount than the engine oil capac- ity. Loosen and remove the drain screw while holding the container under the d...
Page 68: Maintenance
Maintenance 62 not be located and corrected. 6. Turn off the engine and wait 3 minutes. Recheck the oil level using the dipstick to be sure the level falls between the up- per and lower marks. Fill with oil if it is below the lower mark, or drain to the specified level if it is above the upper mark....
Page 69: Maintenance
Maintenance 63 2. Operate each of the power trim and tilt switches / power tilt switches to check that all switches work. 3. Tilt the outboard motor up and check that the trim and tilt rod / the tilt rod is pushed out completely. 4. Check that the trim and tilt rod / the tilt rod is free of corrosio...
Page 70: Maintenance
Maintenance 64 ● check the propeller shaft oil seal for dam- age. Note: if the shear pin equipped: it is designed to break if the propeller hits a hard underwater obstacle to help protect the propeller and drive mechanism. The propeller will then spin freely on the shaft. If this happens, the shear ...
Page 71: Maintenance
Maintenance 65 note: if the propeller nut does not align with the propeller shaft hole after tightening to the specified torque, tighten the nut further to align it with the hole. Emu29282 changing gear oil warning ewm00800 ● be sure the outboard motor is securely fastened to the transom or a stable...
Page 72: Maintenance
Maintenance 66 level plug. 7. Put a new gasket on the gear oil drain screw. Insert and tighten the gear oil drain screw. Emu29302 cleaning fuel tank warning ewm00920 gasoline is highly flammable, and its va- pors are flammable and explosive. ● if you have any question about properly doing this proce...
Page 73: Maintenance
Maintenance 67 emu29320 checking battery (for electric start models) warning ewm00330 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 ...
Page 74: Maintenance
Maintenance 68 of charge. Installing a voltmeter will help you monitor your battery. If you will not use the boat for a month or more, re- move the battery from the boat and store it in a cool, dark place. Completely re- charge the battery before using it. 3. If the battery will be stored for longer...
Page 75: Maintenance
Maintenance 69 marine growth. Do not use anti-fouling paint which includes copper or graphite. These paints can cause more rapid engine corrosion. Zmu01943.
Page 76: Trouble Recovery
70 trouble recovery emu29424 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 77: Trouble Recovery
Trouble recovery 71 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 78: Trouble Recovery
Trouble recovery 72 a. Have serviced by a yamaha dealer. 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 ...
Page 79: Trouble Recovery
Trouble recovery 73 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 80: Trouble Recovery
Trouble recovery 74 emu29511 power trim and tilt / power tilt will not operate if the engine cannot be tilted up or down with the power trim and tilt / the power tilt because of a discharged battery or a failure with the power trim and tilt unit / the power tilt unit, the engine can be tilted manual...
Page 81: Trouble Recovery
Trouble recovery 75 preventing it from functioning. ● avoid accidentally pulling the lanyard during normal operation. Loss of en- gine power means the loss of most steering control. Also, without engine power, the boat could slow rapidly. This could cause people and objects in the boat to be thrown ...
Page 82: Trouble Recovery
Trouble recovery 76 5. Insert the knotted end of the emergency starter rope into the notch in the flywheel rotor and wind the rope several turns around the flywheel clockwise. 6. Pull the rope slowly until resistance is felt. 7. Give a strong pull straight out to crank and start the engine. Repeat i...
Page 83: Consumer Information
77 consumer information emu29811 important warranty information for u.S.A. And canada.
Page 84: Consumer Information
Consumer information 78.
Page 85: Consumer Information
Consumer information 79 emu29830 yamaha motor corporation, u.S.A. Four-stroke outboard motor three-year limited warranty.
Page 86: Consumer Information
Consumer information 80
Page 87: Consumer Information
Consumer information 81 emu29841 important warranty information if you use your yamaha outside the usa or canada.
Page 89
67c-9-18-hyoshi 06.3.3 10:15 am ページ 3.
Page 90
Printed in japan april 2006–0.6 × 1 ! Printed on recycled paper 67c-9-18-hyoshi 06.3.3 10:15 am ページ 4.
Page 91
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 92: Attn: Warranty Department
Place postage here attn: warranty department warranty card-04 2/17/03 2:41 pm page 2.