6D0-9-11 Hyoshi 7/31/03 5:01 PM Page 1 Z300C LZ300C OWNER’S MANUAL Printed in Japan August 2003 - 1.4 × 1 ! Printed on recycled paper U.S.A.
6D0-9-11 Hyoshi 7/31/03 5:01 PM Page 2 EMU25071 ZMU01690 Read this owner’s manual carefully before operating your outboard motor.
Important manual information EMU25100 To the owner Thank you for choosing a Yamaha outboard motor. This Owner’s Manual contains information needed for proper operation, maintenance and care. A thorough understanding of these simple instructions will help you obtain maximum enjoyment from your new Yamaha. If you have any question about the operation or maintenance of your outboard motor, please consult a Yamaha dealer.
Table of contents General information .......................... 1 Identification numbers record.......... 1 Gasoline ............................................ 9 Engine oil .......................................... 9 Flushing device ............................... 19 Digital tachometer ........................... 19 Oil level indicator (digital type) ........ 19 Overheat warning indicator (digital type) .............................................. 20 Speedometer (digital type) ..............
Table of contents models .......................................... 37 Shifting .......................................... 37 Forward (tiller handle and remote control models) ............................. 37 Reverse........................................... 38 Stopping engine ............................ 38 Procedure ....................................... 38 Trimming outboard motor.............. 39 Adjusting trim angle ........................ 39 Adjusting boat trim ..........................
General information EMU25170 Identification numbers record reference in case you need a new key. EMU25180 Outboard motor serial number The outboard motor serial number is stamped on the label attached to the port side of the clamp bracket or the upper part of the swivel bracket. Record your outboard motor serial number in the spaces provided to assist you in ordering spare parts from your Yamaha dealer or for reference in case your outboard motor is stolen. 1.
General information ZMU01946 ZMU01856 EMU25260 EMU25280 Manufactured date label This label is attached to the clamp bracket or the swivel bracket. One Star—Low Emission The one-star label identifies engines that meet the Air Resources Board’s 2001 exhaust emission standards. Engines meeting these standards have 75% lower emissions than conventional carbureted two-stroke engines. These engines are equivalent to the U.S. EPA’s 2006 standards for marine engines.
General information ● ZMU01703 ● EMU25300 Three Stars—Ultra Low Emission The three-star label identifies engines that meet the Air Resources Board’s 2008 exhaust emission standards. Engines meeting these standards have 65% lower emissions than One Star-Low-Emission engines. ● ● ● ZMU01704 EMU25360 Safety information ● ● ● 3 Before mounting or operating the outboard motor, read this entire manual.
General information of the road” on page 5. ● Stay informed about the weather. Check weather forecasts before boating. Avoid boating in hazardous weather. ● Tell someone where you are going: leave a Float Plan with a responsible person. Be sure to cancel the Float Plan when you return. ● Use common sense and good judgment when boating. Know your abilities, and be sure you understand how your boat handles under the different boating conditions you may encounter.
General information ● ● propeller with this engine. Counterclockwise propellers are marked with a letter “L” after the size indication. The wrong type of propeller could cause the boat to go in an unexpected direction, which could lead to accident. EMU25451 Label ENGINE OIL ONLY ● Pour the engine oil into this oil tank, not gasoline. RECOMMENDED OIL: YAMALUBE 2 STROKE OUTBOARD OIL or an equivalent TC-W3 certified ouboard oil. EWM01270 WARNING Do not add gasoline to the oil tank.
General information Give-way vessel The vessel which does not have the right-ofway has the duty to take positive and timely action to stay out of the way of the Stand-On vessel. Normally, you should not cross in front of the vessel with the right-of-way. You should slow down or change directions briefly and pass behind the other vessel. You should always move in such a way that the operator of the other vessel can see what you are doing.
General information tion, provided the other vessel gives you the right-of-way as it should. Overtaking If you are passing another vessel, you are the “Give-Way” vessel. This means that the other vessel is expected to maintain its course and speed. You must stay out of its way until you are clear of it. Likewise, if another vessel is passing you, you should maintain your speed and direction so that the other vessel can steer itself around you.
General information state. The Uniform State Waterway Marking System has been devised for these waters. This system uses buoys and signs with distinctive shapes and colors to show regulatory or advisory information. These markers are white with black letters and orange boarders. They signify speed zones, restrict- ed areas, danger areas, and general information. Remember, markings may vary by geographic location. Always consult local boating authorities before driving your boat in unfamiliar waters.
General information EMU25540 Fueling instructions EWM00010 WARNING GASOLINE AND ITS VAPORS ARE HIGHLY FLAMMABLE AND EXPLOSIVE! ● Do not smoke when refueling, and keep away from sparks, flames, or other sources of ignition. ● Stop engine before refueling. ● Refuel in a well-ventilated area. Refuel portable fuel tanks off the boat. ● Take care not to spill gasoline. If gasoline spills, wipe it up immediately with dry rags. ● Do not overfill the fuel tank. ● Tighten the filler cap securely after refueling.
General information the specified capacity. If a battery which does not meet specifications is used, the electric system could perform poorly or be overloaded, causing electric system damage. For electric start models, choose a battery which meets the following specifications. propeller is more suitable for a smaller operating load. Yamaha dealers stock a range of propellers, and can advise you and install a propeller on your outboard that is best suited to your application.
General information range, reduce the throttle setting to maintain the engine in the proper operating range. For instructions on propeller removal and installation, see page 58. EMU25770 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 in neutral. Always select neutral before starting the engine.
Basic components EMU25792 Main components NOTE: * May not be exactly as shown; also may not be included as standard equipment on all models. Z300C, LZ300C 19 1 12 10 2 11 2 13 14 16 17 15 9 8 7 6 5 18 YAMAHA YAMAHA FUEL MANAGEMENT SPEED 3 Km/h knot mph km mile TRIP TIME set BATT mode 4 1. Top cowling 2. Top cowling lock lever(s) 3. Trim tab (anode) 4. Propeller* 5. Cooling water inlet 6. Anti-cavitation plate 7. Anode 8. Clamp bracket 9. Tilt support lever 10. Flushing device 11.
Basic components 1. Power trim and tilt switch 2. Remote control lever 3. Neutral interlock trigger 4. Neutral throttle lever 5. Main switch / choke switch 6. Engine stop lanyard switch 7. Throttle friction adjuster 1. Remote control lever 2. Power trim and tilt switch 3. Free accelerator 4. Throttle friction adjuster EMU26190 Remote control lever Moving the lever forward from the neutral position engages forward gear. Pulling the lever back from neutral engages reverse.
Basic components erator button and move the remote control lever. 1. Neutral interlock trigger EMU26210 Neutral throttle lever To open the throttle without shifting into either forward or reverse, put the remote control lever in the neutral position and lift the neutral throttle lever. 1. Fully open 2. Fully closed 3. Free accelerator NOTE: ● NOTE: The neutral throttle lever will operate only when the remote control lever is in neutral.
Basic components there is too much resistance, it could be difficult to move throttle lever or grip, which could result in an accident. ● ● your arm or leg while operating. Do not attach the lanyard to clothing that could tear loose. Do not route the lanyard where it could become entangled, preventing it from functioning. Avoid accidentally pulling the lanyard during normal operation. Loss of engine power means the loss of most steering control. Also, without engine power, the boat could slow rapidly.
Basic components EMU26090 Main switch The main switch controls the ignition system; its operation is described below. ● “ ” (off) With the main switch in the “ ” (off) position, the electrical circuits are off, and the key can be removed. ● “ ” (on) With the main switch in the “ ” (on) position, the electrical circuits are on, and the key cannot be removed. ” (start) ● “ With the main switch in the “ ” (start) position, the starter motor turns to start the engine.
Basic components UP DN ZMU01862 EMU26150 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. Pressing the switch “ ” (up) trims the outboard motor up, then tilts it up. Pressing the switch “ ” (down) tilts the outboard motor down and trims it down. When the switch is released, the outboard motor will stop in its current position.
Basic components EMU26240 Trim tab with anode The trim tab should be adjusted so that the steering control can be turned to either the right or left by applying the same amount of force. EWM00840 WARNING An improperly adjusted trim tab could cause difficult steering. Always test run after the trim tab has been installed or replaced to be sure steering is correct. Be sure you have tightened the bolt after adjusting the trim tab.
Basic components EMU26490 Digital tachometer The tachometer shows the engine speed and has the following functions. NOTE: All segments of the display will light momentarily after the main switch is turned on and will return to normal thereafter. ZMU01951 1 2 3 4 5 6 ZMU01865 EMU26460 Flushing device This device is used to clean the cooling water passages of the motor using a garden hose and tap water. NOTE: 7 ZMU01891 1. Tachometer 2. Trim meter 3. Hour meter 4. Oil level indicator 5.
Basic components 1 ZMU01867 1. Oil level indicator EMU26581 Overheat warning indicator (digital type) If the engine temperature rises too high, the warning indicator will start to blink. For further information on reading the indicator, see page 26. ECM00050 CAUTION: Do not continue to run the engine if the overheat warning indicator is on. Serious engine damage will occur. 1. Speedometer 2. Fuel gauge 3. Trip meter/clock/voltmeter 4.
Basic components ● 3. Selector switch (for fuel sensor) ● EMU26620 Trim meter (digital type) This meter shows the trim angle of your outboard motor. NOTE: ● ● ● ● ● Memorize the trim angles that work best for your boat under different conditions. Adjust the trim angle to the desired using the power trim and tilt switch. If the trim angle of your motor exceeds the trim operating range, the top segment on the trim meter display will blink.
Basic components EMU26700 Clock Press the “ ” (mode) button repeatedly until the indicator on the face of the gauge points to “ ” (time). To set the clock, be sure the gauge is in the “ ” (time) mode. Press the “ ” (set) button; the hour display will begin blinking. Press the “ ” (mode) button until the desired hour is displayed. Press the “ ” (set) button again, the minute display will begin blinking. Press the “ ” (mode) button until the desired minute is displayed.
Basic components EMU26730 3. Water separator warning indicator (operates only if the sensor has been installed) Low battery voltage warning indicator If battery voltage drops, the display will automatically turn on and begin to blink. ECM00870 CAUTION: Get back to the port soon if a warning device has activated. For charging the battery, consult your Yamaha dealer. NOTE: After the main switch is first turned on, all segments of the display come on as a test.
Basic components port and starboard engines. NOTE: ● The fuel flow meter displays gallons/hour or liters/hour according to operator preference. Select the desired unit of measurement by setting the selector switch on the back of the gauge during installation. ZMU01751 EMU26770 Fuel economy 1. Selector switch ● This gauge displays the distance per liter or gallon when cruising, and is only for reference use by the operator.
Basic components ● ● bottom, engine mounting height, skill of the operator, and individual gasoline formulation (winter or summer fuel and amount of additives). The Yamaha digital speedometer and fuel management meter calculates speed, miles traveled, and fuel economy by water movement at the stern of the boat. This distance can vary greatly from the actual distance traveled because of water currents, sea swells, and the condition of the water speed sensor (partially plugged or damaged).
Basic components EMU26800 Warning system ECM00090 CAUTION: Do not continue to operate the engine if a warning device has activated. Consult your Yamaha dealer if the problem cannot be located and corrected. EMU26821 Overheat warning (twin engines) This engine has an overheat warning device. If the engine temperature rises too high, the warning device will activate. Activation of warning device ● The engine speed will automatically decrease to about 2000 r/min. ● The overheat warning indicator will light.
Basic components 1 ZMU01871 The oil level warning indicator will light. The buzzer will sound. If the warning system has been activated, stop the engine and check for the cause. ● ● NOTE: The warning for oil filter clogging is similar to the warnings for low oil level and overheating. To make troubleshooting easier, check for engine overheating first, then oil level, and finally oil filter clogging. 1 ZMU01872 1. Oil filter 27 1.
Operation EMU26900 Installation ECM00110 CAUTION: Incorrect engine height or obstructions to smooth water flow (such as the design or condition of the boat, or accessories such as transom ladders or depth finder transducers) can create airborne water spray while the boat is cruising. Severe engine damage may result if the motor is operated continuously in the presence of airborne water spray. NOTE: During water testing check the buoyancy of the boat, at rest, with its maximum load.
Operation ● board motor is affected by the boat/motor combination and the desired use. Test runs at different heights can help determine the optimum mounting height. Consult your Yamaha dealer or boat manufacturer for further information on determining the proper mounting height. For instructions on setting the trim angle of the outboard motor, see page 39. EMU27041 Breaking in engine 1.
Operation quarter throttle or less to let the engine cool. Third through tenth hours: Avoid operating at full throttle for more than 5 minutes at a time. Let the engine cool between full-throttle runs. Vary engine speed occasionally. After the first 10 hours: Operate the engine normally. 4. 5. EMU27100 Preoperation checks EWM00080 WARNING If any item in the preoperation check is not working properly, have it inspected and repaired before operating the outboard motor. Otherwise an accident could occur.
Operation EMU27130 Controls ● ● ● ● Check throttle, shift, and steering for proper operation before starting the engine. The controls should work smoothly, without binding or unusual free play. Look for loose or damaged connections. Check operation of the starter and stop switches when the outboard motor is in the water. ● of storage. Otherwise engine seizure could occur. Use straight gasoline only. If premix fuel is used, the fuel injector could be damaged.
Operation While many additives available may reduce deposits, Yamaha recommends the use of Ring Free Fuel Additive, available from your Yamaha dealer. Ring Free Fuel Additive has repeatedly proven its ability to clean combustion deposits from inside the engine, notably the critical piston-ring-land area, and fuel system components. Follow product labeling for use instructions. EMU27290 Filling oil for oil injection models EWM00530 WARNING Do not add gasoline into the oil tank.
Operation 3. feed oil from the remote oil tank to the engine oil tank. Operate the engine normally. ECM00570 CAUTION: When the engine is operated for the first time or stored for a period of time, a minimum of 5 liters (5.3 US qt, 4.4 Imp qt) of oil should be kept in the remote oil tank. Otherwise the oil-feed pump chamber will not be filled with oil, and no oil will be supplied.
Operation EMU27321 Oil level indicator operation The various functions of the oil level system are as follows: EMU27381 Oil level indicator Electric start models Oil level warning indicator (digital tachometer) Oil level warning indicator (analog tachometer) Green Engine oil tank more than 300 more than cm3 (0.32 US qt, 0.26 Imp qt) 1500 cm3 (1.6 US qt, 1.31 Imp qt) more than 300 Yellow Red–Yellow– Green Remote oil tank cm3 (0.32 US qt, 0.26 Imp qt) 300 cm3 (0.32 US qt, 0.
Operation EMU27450 Operating engine EMU27480 Feeding fuel EWM00420 WARNING ● ● ● 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. When the air vent screw is loosened, gasoline vapor will be released. Gasoline is highly flammable, and its vapors are flammable and explosive. Refrain from smoking, and keep away from open flames and sparks while loosening the air vent screw.
Operation a secure place on your clothing, or your arm or leg. Then install the lock plate on the other end of the lanyard into the engine stop switch. EWM00120 WARNING ● ● ● 3. Turn the main switch to “ ” (on). NOTE: Dual engine users: When the main switch is turned on, the buzzer operates for a few seconds then stops automatically. The buzzer also operates if one of the engines stalls. Attach the engine stop switch lanyard to a secure place on your clothing, or your arm or leg while operating.
Operation 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. OFF ON hole at all times while the engine is running, overheating and serious damage could occur. Stop the engine and check whether the cooling water inlet on the lower case or the cooling water pilot hole is blocked. Consult your Yamaha dealer if the problem cannot be located and corrected.
Operation Pull up the neutral interlock trigger (if equipped) and move the remote control lever quickly and firmly from neutral to forward. EMU27820 Stopping engine EMU27781 Reverse EWM00190 WARNING When operating in reverse, go slowly. Do not open the throttle more than half. Otherwise the boat could become unstable, which could result in loss of control and an accident. Before stopping the engine, first let it cool off for a few minutes at idle or low speed.
Operation the boat begins to feel unstable or is hard to steer, slow down and/or readjust the trim angle. 2. 3. 4. After stopping the engine, disconnect the fuel line or close the fuel cock if there is a fuel joint or a fuel cock on the boat. Tighten the air vent screw on the fuel tank cap (if equipped). Remove the key if the boat will be left unattended.
Operation bottom engine cowling (if equipped) only when the boat is at a complete stop with the engine off. Adjust the outboard motor trim angle using the power trim and tilt switch. To raise the bow (trim-out), press the switch “ ” (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.
Operation boat is pushing the water and there is more air drag. Excessive trim-out can also cause the propeller to ventilate, which reduces performance further, and the boat may “porpoise” (hop in the water), which could throw the operator and passengers overboard. motor trim angle may have little effect on the trim of the boat when operating.
Operation 3. board motor or close the fuel cock. Press the power trim and tilt switch/ power tilt switch “ ” (up) until the outboard motor has tilted up completely. ZMU01886 EWM00260 WARNING After tilting the outboard motor, be sure to support it with the tilt support knob or tilt support lever. Otherwise the outboard motor could fall back down suddenly if oil in the power trim and tilt unit loses pressure. 5.
Operation EMU28051 Procedure for tilting down (power trim and tilt/power tilt models) DN Power trim and tilt model / power tilt model 1. Push the power tilt / power trim and tilt switch “ ” (up) until the outboard motor is supported by the tilt rod and the tilt support lever / tilt support knob becomes free. 2. Release the tilt support lever or pull out the tilt support knob. ZMU01980 DN ZMU01979 ZMU01885 EMU28060 3.
Operation ting up for and cruising in shallow water. Otherwise severe damage from overheating can result. UP EMU28182 Procedure for power trim and tilt/power tilt models 1. Place the gear shift lever in neutral. ZMU01888 UP ZMU01954 3. To return the outboard motor to the normal running position, press the power trim / tilt switch and slowly tilt the outboard motor down. EMU28190 Cruising in other conditions 2.
Maintenance EMU28211 Specifications Dimension: Overall length: 868 mm (34.2 in) Overall width: 568 mm (22.4 in) Overall height X: 1830 mm (72.0 in) Overall height U: 1957 mm (77.0 in) Transom height X: 641 mm (25.2 in) Transom height U: 768 mm (30.2 in) Weight (without propeller) X: 247.0 kg (545 lb) Weight (without propeller) U: 252.0 kg (556 lb) Performance: Full throttle operating range: 4500–5500 r/min Maximum output: 220.
Maintenance (35.27 Imp.oz) Z300TR 1150.0 cm3 (38.88 US oz) (40.56 Imp.oz) Tightening torque for engine: Spark plug: 25.0 Nm (18.4 ft-lb) (2.55 kgf-m) Propeller nut: 54.0 Nm (39.8 ft-lb) (5.51 kgf-m) EMU28220 Transporting and storing outboard motor EWM00690 WARNING ● ● ● Leaking fuel is a fire hazard. When transporting and storing the outboard motor, close the air vent screw and fuel cock to prevent fuel from leaking. USE CARE when transporting fuel tank, whether in a boat or car.
Maintenance Stabilizer” eliminates the need to drain the fuel system. Consult your Yamaha dealer or other qualified mechanic if the fuel system is to be drained instead. 3. 4. Remove the top cowling and propeller. Install the flushing attachment over the cooling water inlet. ing and fogging at the same time. EWM00090 WARNING ● ● ECM00300 CAUTION: Do not run the engine without supplying it with cooling water. Either the engine water pump will be damaged or the engine will be damaged from overheating.
Maintenance 3. 4. a remote oil tank, it may be necessary to manually override the control unit to completely fill the engine oil tank. Change the gear oil. For instructions, see page 60. Inspect the oil for the presence of water which indicates a leaky seal. Seal replacement should be performed by an authorized Yamaha dealer prior to use. Grease all grease fittings. For further details, see page 53. EMU28420 Cleaning and anticorrosion measures 1. 2.
Maintenance 4. cool, dry, well-ventilated place out of direct sunlight. Once a month, check the specific gravity of the electrolyte and recharge as required to prolong battery life. 4. EMU28440 Flushing power unit off the water and disconnect the garden hose. When flushing is complete, reinstall the garden hose connector on the fitting on the bottom cowling. Tighten the connector securely. ECM00540 Perform this procedure right after operation for the most thorough flushing. 1.
Maintenance page 46. EMU28460 Checking painted surface of motor Check the motor for scratches, nicks, or flaking paint. Areas with damaged paint are more likely to corrode. If necessary, clean and paint the areas. A touch-up paint is available from your Yamaha dealer. EMU28480 Periodic maintenance EWM01070 WARNING Be sure to turn off the engine when you perform maintenance unless otherwise specified.
Maintenance EMU28521 Maintenance chart Frequency of maintenance operations may be adjusted according to the operating conditions, but the following table gives general guidelines. Refer to the sections in this chapter for explanations of each owner-specific action. The “ ” symbol indicates the check-ups which you may carry out yourself. The “ ” symbol indicates work to be carried out by your Yamaha dealer.
Maintenance Initial Item Actions High pressure fuel pump oil level Inspection / filling Oil pump Inspection / adjustment Oil tank water drain Inspection / cleaning Spark plug(s) Cleaning / adjustment / replacement 10 hours (1 month) Every 50 hours (3 months) 100 hours (6 months) 200 hours (1 year) NOTE: When operating in salt water, turbid or muddy water, the engine should be flushed with clean water after each use. EMU28871 Maintenance chart (additional) Every Item Actions 500 hours (2.
Maintenance EMU28931 Greasing Yamaha marine grease (Water resistant grease) Z300C, LZ300C ZMU01939 EMU28950 Cleaning and adjusting spark plug sparks, which could lead to explosion or fire. EWM00560 WARNING When removing or installing a spark plug, be careful not to damage the insulator. A damaged insulator could allow external 53 The spark plug is an important engine component and is easy to inspect. The condition of the spark plug can indicate something about the condition of the engine.
Maintenance ple, if the center electrode porcelain is very white, this could indicate an intake air leak or carburetion problem in that cylinder. Do not attempt to diagnose any problems yourself. Instead, take the outboard motor to a Yamaha dealer. You should periodically remove and inspect the spark plug because heat and deposits will cause the spark plug to slowly break down and erode.
Maintenance ● ● ● Fuel line joint leakage Fuel line cracks or other damage Fuel connector leakage EMU28980 Inspecting fuel filter EWM00310 WARNING ZMU01853 Gasoline is highly flammable, and its vapors are flammable and explosive. ● If you have any question about properly doing this procedure, consult your Yamaha dealer. ● Do not perform this procedure on a hot or running engine. Allow the engine to cool. ● There will be fuel in the fuel filter.
Maintenance EMU29040 2. Filter cup ring nut 2. 3. Inspecting idling speed Remove the filter cup, catching any spilled fuel in a rag. Remove the filter element, and inspect it and the O-ring to make sure they are in good condition. Replace them if necessary. If any water is found in the fuel, the Yamaha portable fuel tank or other fuel tanks should be checked and cleaned. 6 4 1 3 5 EWM00450 WARNING ● ● ● Do not touch or remove electrical parts when starting or during operation.
Maintenance or other qualified mechanic. EMU29150 2. EWM00430 Checking power trim and tilt system Verify whether the idle speed is set to specification. For idle speed specifications, see page 45. WARNING ● EMU29050 Checking water in engine oil tank Oil injection models There is a water trap at the bottom of the engine oil tank. If water or foreign matter is visible in this trap, consult your Yamaha dealer. ● 1. 2. 2 3.
Maintenance cylinders. turning. ZMU01941 ZMU01896 7. 8. Activate the trim-up switch until the tilt rod is fully extended. Unlock the tilt support lever. Tilt the outboard motor down. Check that the tilt rod and trim rods operate smoothly. NOTE: Consult your Yamaha dealer if any operation is abnormal. EMU29171 Checking propeller EWM00321 WARNING You could be seriously injured if the engine accidentally starts when you are near the propeller.
Maintenance ● Check the propeller shaft oil seal for damage. 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 pin must be replaced. identified with the letter “L” after the size indication on the propeller. Otherwise the boat could move in the opposite direction from that expected.
Maintenance to drain completely. EMU29280 Changing gear oil ECM00710 CAUTION: EWM00800 WARNING ● ● 1. 2. 3. Be sure the outboard motor is securely fastened to the transom or a stable stand. You could be severely injured if the outboard motor falls on you. Never get under the lower unit while it is tilted, even when the tilt support lever or knob is locked. Severe injury could occur if the outboard motor accidentally falls. Inspect the used oil after it has been drained.
Maintenance EMU29310 EMU29320 Inspecting and replacing anode(s) Checking battery (for electric start models) Yamaha outboard motors are protected from corrosion by sacrificial anodes. Inspect the external anodes periodically. Remove scales from the surfaces of the anodes. Consult a Yamaha dealer for replacement of external anodes. ECM00720 CAUTION: Do not paint anodes, as this would render them ineffective. NOTE: Inspect ground leads attached to external anodes on equipped models.
Maintenance ● 1. deteriorate. Ordinary tap water contains minerals harmful to a battery, and should not be used for topping up. Check the electrolyte level at least once a month. Fill to the manufacturer’s recommended level when necessary. Top up only with distilled water (or pure deionized water suitable to use in batteries). tion in the boat. Install a fully charged battery in the holder. ECM01121 CAUTION: ● ● ● ● 2. 3. Always keep the battery in a good state of charge.
Maintenance lead (option). Use a connecting cable between the (-) terminals of the starting battery and accessory battery. See the illustrations of the wiring connections. This cable must be made from wire thicker than the starting battery cable. EWM00600 WARNING Use of smaller wire could lead to a fire. 7 3 4 EMU29400 5 2 1 6 ZMU01942 1. Battery for accessories 2. Battery for starting 3. Large black lead 4. Large red lead for starting battery 5. Negative connecting cable 6. Power for accessories 7.
Trouble Recovery EMU29421 Troubleshooting A problem in the fuel, compression, or ignition systems can cause poor starting, loss of power, or other problems. This section describes basic checks and possible remedies, and covers all Yamaha outboard motors. Therefore some items may not apply to your model. If your outboard motor requires repair, bring it to your Yamaha dealer. If the engine trouble warning indicator is flashing, consult your Yamaha dealer. Starter will not operate. Q.
Trouble Recovery 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 serviced by a Yamaha dealer. Q. Has warning system activated? A. Find and correct cause of warning. Q. Is spark plug gap incorrect? A. Inspect and adjust as specified. Q. Is ignition wiring damaged or poorly connected? A.
Trouble Recovery 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. Are weeds or other foreign matter tangled on gear housing? A. Remove foreign matter and clean lower unit. Q. Is water pump or thermostat faulty? A. Have serviced by a Yamaha dealer. Q. Is fuel system obstructed? A. Check for pinched or kinked fuel line or other obstructions in fuel system. Q. Is there excess water in fuel filter cup? A. Drain filter cup.
Trouble Recovery board motor unsafe to operate. Q. Is heat range of spark plug incorrect? A. Inspect spark plug and replace it with recommended type. If the outboard motor hits an object in the water, follow the procedure below. Q. Is high pressure fuel pump drive belt broken? A. Have serviced by a Yamaha dealer. Q. Is engine not responding properly to shift lever position? A. Have serviced by a Yamaha dealer. Engine vibrates excessively. Q. Is propeller damaged? A. Have propeller repaired or replaced.
Trouble Recovery 1 2 ZMU01904 EMU29471 Replacing fuse If a fuse has blown, remove the electrical cover, open the fuse holder and remove the fuse with a fuse puller (if equipped). Replace it with a spare one of the proper amperage. EWM00630 WARNING Be sure to use the specified fuse. An incorrect fuse or a piece of wire could allow excessive current flow. This could cause electric system damage and a fire hazard. 1. Fuse (20A, 30A, 100A) 2.
Trouble Recovery EMU29670 Engine fails to operate 1 EMU29740 Low oil level warning activates If the oil level is allowed to drop too low, the red segment will appear on the oil level indicator, the buzzer will sound, and engine speed will be limited to about 2000 r/min. If this happens, a reserve amount of oil can be pumped from the remote oil tank to the engine oil tank using the emergency switch. ZMU01907 1.
Trouble Recovery plug holes while rotating the flywheel manually. EMU29760 Treatment of submerged motor If the outboard motor is submerged, immediately take it to a Yamaha dealer. Otherwise some corrosion may begin almost immediately. If you cannot immediately take the outboard motor to a Yamaha dealer, follow the procedure below in order to minimize engine damage. EMU29970 Procedure 1. ZMU01911 Thoroughly wash away mud, salt, seaweed, and so on, with fresh water. 5.
Consumer information EMU29811 Important warranty information for U.S.A.
Consumer information 72
Consumer information EMU29820 YAMAHA MOTOR CORPORATION, U.S.A.
Consumer information 74
Consumer information 75
Consumer information EMU29840 IMPORTANT WARRANTY INFORMATION IF YOU USE YOUR YAMAHA OUTSIDE U.S.A.
6D0-9-11 Hyoshi 7/31/03 5:01 PM Page 1 Z300C LZ300C OWNER’S MANUAL Printed in Japan August 2003 - 1.4 × 1 ! Printed on recycled paper U.S.A.
Warranty card 2/27/02 11:47 AM Page 1 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 que le montage et l’inspection ont été faits dans le respect des directives d’inspection et que la marche à suivre pour la garantie et l’entretien a été expliquée à l’acheteur au détail.
Warranty card 2/27/02 11:47 AM Page 2 PLACE POSTAGE HERE ATTN: WARRANTY DEPARTMENT
