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Yamaha 30DMH Owner's Manual

Summary of 30DMH

  • Page 1

    Q q q q read this manual carefully before operating this outboard motor. Owner’s manual 30d 6j8-28199-2g-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 engine shut-off cord (lanyard)......... 25 oil.................................................... 26 engine ............................................. 26 install cowling.................................. 26 filling fuel and engine oil............... 26 filling fuel for portable...

  • Page 6: Safety Information

    1 safety information emu33622 outboard motor safety observe these precautions at all times. Emu36500 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 7: Safety Information

    Safety information 2 death when inhaled. Symptoms include nau- sea, dizziness, and drowsiness. Keep cock- pit and cabin areas well ventilated. Avoid blocking exhaust outlets. Emu33780 modifications do not attempt to modify this outboard mo- tor. Modifications to your outboard motor may reduce safety...

  • Page 8: Safety Information

    Safety information 3 operate defensively at safe speeds and keep a safe distance away from people, ob- jects, and other boats. ● do not follow directly behind other boats or waterskiers. ● avoid sharp turns or other maneuvers that make it hard for others to avoid you or un- derstand where you are go...

  • Page 9: 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 10: General Information

    General information 5 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 11: General Information

    General information 6 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 12: General Information

    General information 7 emu35132 symbols the following symbols mean as follows. Notice/warning read owner’s manual hazard caused by continuous rotation electrical hazard zmu05696 zmu05664 zmu05665 zmu05666.

  • Page 13: Specifications

    8 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 14: Installation Requirements

    Specifications and requirements 9 0.200 l (0.211 us qt, 0.176 imp.Qt) tightening torque for engine: spark plug: 25.0 nm (2.55 kgf-m, 18.4 ft-lb) propeller nut: 35.0 nm (3.57 kgf-m, 25.8 ft-lb) emu33553 installation requirements emu33563 boat horsepower rating warning ewm01560 overpowering a boat can...

  • Page 15: Start-In-Gear Protection

    Specifications and requirements 10 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 16: Motor Disposal Requirements

    Specifications and requirements 11 emu36340 motor disposal requirements never illegally discard (dump) the motor yamaha recommends consulting the dealer about discarding the motor. Emu36351 emergency equipment keep the following items onboard in case there is trouble with the motor. ● a tool kit wit...

  • Page 17: Components

    12 components emu2579h components diagram tip: * may not be exactly as shown; also may not be included as standard equipment on all mod- els. 30dmh 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 e...

  • Page 18: Components

    Components 13 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 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 fue...

  • Page 19: Components

    Components 14 emu25961 throttle indicator the fuel consumption curve on the throttle indicator shows the relative amount of fuel consumed for each throttle position. Choose the setting that offers the best performance and fuel economy for the desired operation. Emu25973 throttle friction adjuster a ...

  • Page 20: Components

    Components 15 emu26001 engine stop button to open the ignition circuit and stop the en- gine, push this button. 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 ...

  • Page 21: Components

    Components 16 to increase resistance, turn the adjuster clockwise. To decrease resistance, turn the adjuster counterclockwise. Warning ewm00040 do not overtighten the friction adjuster. If there is too much resistance, it could be difficult to steer, which could result in an accident. Emu26244 trim ...

  • Page 22: Components

    Components 17 partially to provide more clearance when op- erating in shallow water. Emu30530 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 po- sition. To release...

  • Page 23: Components

    Components 18 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 20. Zmu04911.

  • Page 24: Instruments and Indicators

    19 instruments and indicators emu36013 indicators emu36032 overheat-alert indicator if the engine temperature rises too high, this indicator will light up. For further information on reading the indicator, see page 20. Notice ecm00052 do not continue to run the engine if the overheat-alert indicator...

  • Page 25: Engine Control System

    20 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 26: Installation

    21 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 27: Installation

    Installation 22 notice ecm01630 ● during water testing, check the buoy- ancy of the boat, at rest, with its maxi- mum load. Check that the static water level on the exhaust housing is low enough to prevent water entry into the power head when water rises due to waves when the outboard is not run- ni...

  • Page 28: Installation

    Installation 23 3. Secure the clamp bracket to the transom using the bolts provided with the out- board (if packed). For details, consult your yamaha dealer. Warning! Avoid using bolts, nuts or washers other than those contained in the engine packaging. If used, they must be of at least the same qua...

  • Page 29: Operation

    24 operation emu36380 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 30: Operation

    Operation 25 emu37141 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, check the fuel level. For fuel filling instruct...

  • Page 31: Operation

    Operation 26 emu27120 oil ● check to be sure you have plenty of oil for your trip. Emu27140 engine ● check the engine and engine mounting. ● look for loose or damaged fasteners. ● check the propeller for damage. Emu36952 install cowling 1. Be sure that a cowling lock lever is re- leased. 2. Be sure ...

  • Page 32: Operation

    Operation 27 on your skin, wash with soap and wa- ter. If gasoline spills on your clothing, change your clothes. 1. Stop the engine. 2. Remove the portable tank from the boat. 3. Be sure you are in a well-ventilated out- door area, either securely moored or trailered. 4. Do not smoke and keep away f...

  • Page 33: Operation

    Operation 28 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 tank 1. Pour oil into a clean fuel can, and then add gasoline. 2. Replace the fuel can cap and close ti...

  • Page 34: Operation

    Operation 29 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. Squeeze the primer pump, with the ar- row pointing up, until you feel it become firm. During engine operation place the tank horizontally, otherwise fuel cannot be dr...

  • Page 35: Operation

    Operation 30 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. Place ...

  • Page 36: Operation

    Operation 31 tip: ● when the engine is cold, it needs to be warmed up. For further information, see page 31. ● if the engine does not start on the first try, repeat the procedure. If the engine fails to start after 4 or 5 tries, open the throttle a small amount (between 1/8 and 1/4) and try again. A...

  • Page 37: Operation

    Operation 32 shut-off switch. Emu34550 shifting warning ewm00180 before shifting, make sure there are no swimmers or obstacles in the water near you. Notice ecm01610 warm up the engine before shifting into gear. Until the engine is warm, the idle speed may be higher than normal. High idle speed can ...

  • Page 38: Operation

    Operation 33 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 39: Operation

    Operation 34 clip from the engine shut-off switch. Emu27862 trimming outboard motor warning ewm00740 excessive trim for the operating condi- tions (either trim up or trim down) can cause boat instability and can make steering the boat more difficult. This in- creases the possibility of an accident. ...

  • Page 40: Operation

    Operation 35 3. Reposition the rod in the desired hole. To raise the bow (“trim-out”), move the rod away from the transom. To lower the bow (“trim-in”), move the rod to- ward the transom. Make test runs with the trim set to different angles to find the position that works best for your boat and oper...

  • Page 41: Operation

    Operation 36 ating with excessive trim-in at higher speeds also makes the boat unstable. Resistance at the bow is greatly increased, heightening the danger of “bow steering” and making opera- tion difficult and dangerous. Tip: depending on the type of boat, the outboard motor trim angle may have lit...

  • Page 42: Operation

    Operation 37 support the engine. Notice: do not use the tilt support lever or knob when trailering the boat. The out- board motor could shake loose from the tilt support and fall. If the motor cannot be trailered in the normal run- ning position, use an additional sup- port device to secure it in th...

  • Page 43: Operation

    Operation 38 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 44: Operation

    Operation 39 the optional chromium-plated water pump kit (see page 10) if you use the outboard motor in acidic water or water with a lot of sediment in it, such as muddy or turbid (cloudy) water. After operating in such water, flush the cool- ing passages with fresh water to prevent cor- rosion. Als...

  • Page 45: Maintenance

    40 maintenance emu28226 transporting and storing outboard motor warning ewm00692 ● 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 46: Maintenance

    Maintenance 41 water may enter the cylinder through the exhaust port and cause engine trou- ble. ● store the outboard motor in a dry, well- ventilated place, not in direct sunlight. Emu28303 procedure emu28334 flushing in a test tank notice ecm00300 do not run the engine without supplying it with co...

  • Page 47: Maintenance

    Maintenance 42 stops. 11. Drain the cooling water completely out of the motor. Clean the body thoroughly. 12. If the “fogging oil” is not available, re- move the spark plug(s). Pour a tea- spoonful of clean engine oil into each cylinder. Crank several times manually. Replace the spark plug(s). 13. D...

  • Page 48: Maintenance

    Maintenance 43 tor before operation. Emu28511 replacement parts if replacement parts are necessary, use only genuine yamaha parts or parts of equivalent design and quality. Any part of inferior quality may malfunction, and the resulting loss of control could endanger the operator and passengers. Yam...

  • Page 49: Maintenance

    Maintenance 44 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 50: Maintenance

    Maintenance 45 fuel line(low pres- sure) inspection or replace- ment as necessary fuel pump inspection or replace- ment as necessary fuel/oil leakage inspection gear oil replacement greasing points greasing impeller/water pump housing inspection or replace- ment as necessary impeller/water pump hous...

  • Page 51: Maintenance

    Maintenance 46 emu34451 maintenance chart 2 item actions every 1000 hours guide exhaust/exhaust manifold inspection or replace- ment as necessary.

  • Page 52: Maintenance

    Maintenance 47 emu28941 greasing yamaha grease a (water resistant grease) yamaha grease d (corrosion resistant grease; for propeller shaft) 30dmh emu28955 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 i...

  • Page 53: Maintenance

    Maintenance 48 move and inspect the spark plug because heat and deposits will cause the spark plug to slowly break down and erode. If electrode erosion becomes excessive, or if carbon and other deposits are excessive, you should re- place the spark plug with another of the cor- rect type. 1. Remove ...

  • Page 54: Maintenance

    Maintenance 49 from the flywheel and other rotating parts while the engine is running. Notice ecm00490 this procedure must be performed while the outboard motor is in the water. A flushing attachment or test tank can be used. A diagnostic tachometer should be used for this procedure. Results may var...

  • Page 55: Maintenance

    Maintenance 50 ● check each of the propeller blades for wear, erosion from cavitation or ventila- tion, or other damage. ● check the propeller shaft for damage. ● check the splines for wear or damage. ● check for fish line tangled around the pro- peller shaft. ● check the propeller shaft oil seal fo...

  • Page 56: Maintenance

    Maintenance 51 tip: 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. Emu29287 changing gear oil warning ewm00800 ● be sure the outboard motor is securely fastened to the transom or a stable ...

  • Page 57: Maintenance

    Maintenance 52 6. Put a new gasket on the oil level plug. When the oil begins to flow out of the oil level plug hole, insert and tighten the oil 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 gaso...

  • Page 58: Maintenance

    Maintenance 53 them ineffective. Tip: inspect ground leads attached to external anodes on equipped models. Consult a yamaha dealer for inspection and replace- ment of internal anodes attached to the pow- er unit. Zmu02924.

  • Page 59: Trouble Recovery

    54 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 60: Trouble Recovery

    Trouble recovery 55 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 61: Trouble Recovery

    Trouble recovery 56 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 62: Trouble Recovery

    Trouble recovery 57 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 63: Trouble Recovery

    Trouble recovery 58 could result in an accident. ● attach the engine shut-off cord to a se- cure place on your clothing, or your arm or leg while operating the boat. ● do not attach the cord to clothing that could tear loose. Do not route the cord where it could become entangled, pre- venting it fro...

  • Page 64: Trouble Recovery

    Trouble recovery 59 6. 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. 7. Give a strong pull straight out to crank and start the engine. Repeat if neces- sary. Emu33501 treatment of submerged mot...

  • Page 66

    Yamaha motor co., ltd. Printed on recycled paper printed in japan april 2008–0.2 × 1 !.