Yamaha 25 Owner'S Manual Download

Page: 57 / 86

Operation

shift lever in neutral.

Push the tilt lock lever down to release it.

Pull up the shallow water lever.

Slightly tilt the outboard motor up. The
tilt support bar will lock automatically,
supporting the outboard motor in a par-
tially raised position. This outboard mo-
tor has 2 positions for shallow water
cruising.

To return the outboard motor to the nor-
mal running position, place the tilt lock
lever and shallow water lever to the lock
position.

ZMU03745

ZMU03525

ZMU03746

ZMU03728

ZMU03729

ZMU03731

Summary of Contents for 25

Page 1: ...n Japan April 2009 0 1 1 Printed on recycled paper 25 OWNER S MANUAL 6L2 28199 1V U S A Edition LIT 18626 08 35 q Read this manual carefully before operating this outboard motor 6L2 9 1V Hyoshi 09 2 5 9 54 ページ 1 ...

Page 2: ... ZMU01690 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 6L2 9 1V Hyoshi 09 2 5 9 54 ページ 2 ...

Page 3: ...h or serious injury NOTICE ECM00701 A NOTICE indicates special precautions that must be taken to avoid damage to the outboard motor or other property TIP A TIP provides key information to make pro cedures easier or clearer Yamaha continually seeks advancements in product design and quality Therefore while this manual contains the most current prod uct information available at the time of print ing...

Page 4: ...power rating 14 Mounting motor 14 Remote control requirements 14 Battery requirements 14 Specifications of Battery 14 Mounting battery 15 Multiple batteries 15 Without a rectifier or Rectifier Regulator 15 Propeller selection 15 Start in gear protection 16 Engine oil requirements 16 Fuel requirements 16 Gasoline 16 Ring Free Fuel Additive 17 Muddy or acidic water 17 Anti fouling paint 17 Motor dis...

Page 5: ...lting up and down 48 Procedure for tilting up manual tilt models 49 Procedure for tilting down manual tilt models 50 Shallow water 50 Cruising in shallow water manual tilt models 50 Cruising in other conditions 52 Maintenance 53 Transporting and storing outboard motor 53 Clamp screw mounting models 53 Storing outboard motor 53 Procedure 54 Lubrication 55 Cleaning and anticorrosion measures 55 Clea...

Page 6: ...tarting engine 72 Treatment of submerged motor 74 Consumer information 75 YAMAHA MOTOR CORPORATION U S A OUTBOARD MOTOR TWO YEAR LIMITED WARRANTY 75 IMPORTANT WARRANTY INFORMATION IF YOU USE YOUR YAMAHA OUTSIDE THE USA OR CANADA 78 ...

Page 7: ...f cord so that the engine stops if the operator falls overboard or leaves the helm This prevents the boat from running away under power and leaving people stranded or running over people or objects Always attach the engine shut off cord to a secure place on your clothing or your arm or leg while operating Do not remove it to leave the helm while the boat is moving Do not at tach the cord to clothi...

Page 8: ... in the water near the boat shift into neutral and stop the engine Stay away from swimming areas Swimmers can be hard to see The propeller can keep moving even when the motor is in neutral Stop the engine when a person is in the water near you EMU33751 Passengers Consult your boat manufacturer s instruc tions for details about appropriate passenger locations in your boat and be sure all pas senger...

Page 9: ...enforcement personnel if a report is necessary EMU33870 Boat education and training Operators should take a boating safety course This may be required in your state Many of the organizations listed in the next section can provide information about cours es in your area You may also want to consider an Internet based program for basic boater education The Online Boating Safety Course provided by th...

Page 10: ...d Suite 330 Lexington KY 40511 859 225 9497 www nasbla org National Marine Manufacturers Associa tion NMMA 200 East Randolph Drive Suite 5100 Chicago IL 60601 www nmma org Marine Retailers Association of America 155 N Michigan Ave Chicago IL 60304 www mraa com EMU33690 Basic boating rules Rules of the road Just as there are rules that apply when you are driving on streets and highways there are wa...

Page 11: ...re three main situations that you may encounter with other vessels which could lead to a collision unless the Steering Rules are followed Meeting you are approaching another ves sel head on Crossing you are traveling across the oth er vessel s path Overtaking you are passing or being passed by another vessel In the following illustration your boat is in the center You should give the right of way ...

Page 12: ...upply stores Fishing vessel right of way All vessels that are fishing with nets lines or trawls are considered to be fishing vessels under the International Rules Vessels with trolling lines are not considered fishing ves sels Fishing vessels have the right of way regardless of position Fishing vessels can not however impede the passage of other vessels in narrow channels Sailing vessel right of w...

Page 13: ...ese waters This system uses buoys and signs with dis tinctive shapes and colors to show regulato ry or advisory information These markers are white with black letters and orange boarders They signify speed zones restrict ed areas danger areas and general infor mation Remember markings may vary by geo graphic location Always consult local boat ing authorities before driving your boat in unfamiliar ...

Page 14: ...Safety information 8 ZMU01708 ...

Page 15: ...al 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 sto len EMU25190 Key number If a main key switch is equipped with the mo tor the key identification number is stamped on your key as shown in the illustration Record this number in the space provided for reference in case you need a new key 1 Outboard motor...

Page 16: ... 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 labels If these labels are damaged or missing contact your Yamaha dealer for replacements 25 ZMU06146 1 2 3 ...

Page 17: ...General information 11 1 2 3 ZMU05670 ...

Page 18: ... 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 ZMU05666 ZMU05667 ZMU05668 ...

Page 19: ... Weight AL L 25EH 52 0 kg 115 lb 25ER 51 0 kg 112 lb 25MH 49 5 kg 109 lb Performance Full throttle operating range 5000 6000 r min Maximum output 18 4 kW 5500 r min 25 HP 5500 r min Idling speed in neutral 750 50 r min Engine Type 2 stroke L Displacement 395 0 cm3 Bore stroke 67 0 56 0 mm 2 64 2 20 in Ignition system CDI Spark plug NGK B7HS 10 Spark plug gap 0 9 1 0 mm 0 035 0 039 in Control syste...

Page 20: ...plate or contact the manufacturer EMU33571 Mounting motor WARNING EWM01570 Improper mounting of the outboard mo tor could result in hazardous condi tions such as poor handling loss of control or fire hazards Because the motor is very heavy spe cial equipment and training is required to mount it safely Your dealer or other person experienced in proper rigging should mount the motor using correct eq...

Page 21: ... maintenance free battery with the above models can shorten the life of the bat tery significantly Install an optional Rectifier Regulator or use accessories rated to withstand 18 volts or higher with the above models Consult your Yamaha dealer for details on installing an optional Rectifier Regulator EMU34192 Propeller selection Next to selecting an outboard choosing the right propeller is one of...

Page 22: ...aded fuel Yamaha re comends that you use alcohol free see Gasohol gasoline whenever possible NOTICE ECM01981 Do not use leaded gasoline Leaded gasoline can seriously damage the en gine Avoid getting water and contaminants in the fuel tank Contaminated fuel can cause poor performance or engine damage Use only fresh gasoline that has been stored in clean containers Gasohol There are two types of gas...

Page 23: ...e Fuel Additive available from your Yamaha dealer Ring Free Fuel Addi tive 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 la beling for use instructions EMU36880 Muddy or acidic water Yamaha strongly recommends that you have your dealer install the optional chromium plated wa...

Page 24: ...ed to the bottom cowling Existing Technology N A EMU25262 Manufactured date label This label is attached to the clamp bracket or the swivel bracket 1 Approval label location 1 ZMU06143 EMISSION CONTROL INFORMATION ENGINE FAMILY THIS ENGINE CONFORMS TO 2001 U S EPA REGULATIONS FOR MARINE SI ENGINES REFER TO THE OWNERS MANUAL FOR MAINTENANCE SPECIFICATIONS AND ADJUSTMENTS FELs SPARK PLUG DISPLACEMEN...

Page 25: ...voir and must not 4 1 2 3 1 2 5 6 7 8 8 9 17 18 15 16 13 12 10 11 14 20 19 21 ZMU06147 1 Manual starter handle 2 Choke knob 3 Starter button 4 Gear shift lever 5 Tiller handle 6 Throttle friction adjuster 7 Engine stop button Engine shut off switch 8 Transom clamp handle 9 Tilt lock lever 10 Trim rod 11 Cooling water inlet 12 Propeller 13 Trim tab anode 14 Anti cavitation plate 15 Clamp bracket 16...

Page 26: ...lockwise EMU26181 Remote control box The remote control lever actuates both the shifter and the throttle The electrical switch es are mounted on the remote control box EMU26190 Remote control lever Moving the lever forward from the neutral po sition engages forward gear Pulling the le ver back from neutral engages reverse The engine will continue to run at idle until the le ver is moved about 35 a...

Page 27: ...osed position EMU26221 Choke switch To activate the choke system press in the main switch while the key is turned to the on or start position The choke system will then supply the rich fuel mixture required to start the engine When the key is released the choke will switch off automatically EMU25911 Tiller handle To change direction move the tiller handle to the left or right as necessary EMU25922...

Page 28: ...on device provides adjustable resis tance to movement of the throttle grip or the remote control lever and can be set accord ing to operator preference To increase resistance turn the adjuster clockwise To decrease resistance turn the adjuster counterclockwise WARNING Do not overtighten the friction adjuster If there is too much resistance it could be difficult to move the remote control lever or ...

Page 29: ...Do not attach the cord to clothing that could tear loose Do not route the cord where it could become en tangled preventing 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 in the boat to be thrown forward EWM00122 EMU...

Page 30: ...th the main switch in the off posi tion the electrical circuits are off and the key can be removed on With the main switch in the on posi tion the electrical circuits are on and the key cannot be removed start With the main switch in the start po sition the starter motor turns to start the en gine When the key is released it returns automatically to the on position EMU26122 Steering friction adjus...

Page 31: ... control can be turned to either the right or left by applying the same amount of force If the boat tends to veer to the left port side turn the trim tab rear end to the port side A in the figure If the boat tends to veer to the right starboard side turn the trim tab end to the starboard side B in the figure NOTICE ECM00840 The trim tab also serves as an anode to protect the engine from electroche...

Page 32: ...M01660 Do not use the tilt support bar when trailering the boat The outboard motor could shake loose from the tilt support and fall If the motor cannot be trailered in the normal running position use an addi tional support device to secure it in the tilt position EMU26373 Cowling lock lever s turn type To remove the engine top cowling turn the cowling lock lever s and lift off the cowling When ins...

Page 33: ...NING EWM01720 Your dealer or other person experienced in proper outboard motor mounting should show you how to mount your out board motor The outboard motor should be mounted so that the boat is well balanced Otherwise the boat could be hard to steer For single en gine boats mount the outboard motor on the centerline keel line of the boat EMU26923 Mounting height To run your boat at optimum effici...

Page 34: ...turer for further information on deter mining the proper mounting height For instructions on setting the trim angle of the outboard motor see page 46 EMU26972 Clamping the outboard motor 1 Place the outboard motor on the tran som so that it is positioned as close to the center as possible Tighten the tran som clamp screws evenly and securely Occasionally check the clamp screws for tightness during...

Page 35: ...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 quality of material and strength and must be tightened se curely After tightening test run the engine and check their tightness EWM00651 1 Bolts ZMU02013 ZMU02637 1 ...

Page 36: ...e to 3000 r min or less 3 Next two hours Accelerate at full throttle onto plane then reduce engine speed to three quar ter throttle approximately 4000 r min Vary engine speed occasionally Run at full throttle for one minute then allow about 10 minutes of operation at three quarter throttle or less to let the engine cool 4 Remaining seven hours Run the engine at any speed However avoid operating at...

Page 37: ...ed mechanic Improper repairs can make the outboard unsafe to operate EMU36451 Check for fuel leaks Check for fuel leaks or gasoline fumes in the boat Check for fuel leakage from the fuel sys tem Check the fuel tank and fuel lines for cracks swellings or other damages EMU37320 Check the fuel filter Check that the fuel filter is clean and free of water If any water is found in the fuel or if a signi...

Page 38: ...loose or damaged fasteners Check the propeller for damage EMU36953 Install cowling 1 Be sure that a cowling lock lever is re leased 2 Be sure that the rubber seal is seated all the way around the top cowling 3 Place the top cowling on bottom cowl ing 4 Check to be sure the rubber seal fits cor rectly all the way around the engine 5 Move the lever to lock the cowling as shown NOTICE If the cowling ...

Page 39: ...line by mouth If you should swallow some gasoline or inhale a lot of gasoline vapor or get some gasoline in your eyes see your doctor immediately If gasoline spills on your skin wash with soap and wa ter If gasoline spills on your clothing change your clothes 1 Be sure the engine is stopped 2 Disconnect the fuel line from the fuel tank and tighten the air vent screw on the fuel tank cap 3 Remove t...

Page 40: ...e fouled spark plugs smoky exhaust and heavy carbon deposits 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 tank 1 Pour oil into a clean fuel can and then add gasoline 2 R...

Page 41: ...rks while loosen ing the air vent screw This product emits exhaust gases which contain carbon monoxide a col orless odorless gas which could cause brain damage or death when inhaled 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 ...

Page 42: ... operating Do not attach the cord to clothing that could tear loose Do not route the cord 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 in the boat to be thrown forward 1...

Page 43: ...f necessary 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 43 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 ...

Page 44: ...power the boat could slow rapidly This could cause people and objects in the boat to be thrown forward 1 Place the gear shift lever in neutral 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 shu...

Page 45: ...e engine is cold it needs to be warmed up For further information see page 43 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 Also if the engine is warm and fails to start open the throttle a same amount and try to start the engine again If the engine still fails to...

Page 46: ...engine starts return the throttle to the original position TIP As a starting point lift the lever just until you feel resistance then lift slightly more The neutral throttle lever can only be used when the remote control lever is in neutral 4 Pull out turn the choke knob fully After the engine starts replace return the knob to the home position TIP It is not necessary to use the choke when startin...

Page 47: ...oat if opera tor is ejected Attach the engine shut off cord to a secure place on your cloth ing or your arm or leg while operating Do not attach the cord to clothing that could tear loose Do not route the cord 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...

Page 48: ...tically returns to its normal position when you release your hand Therefore keep the switch pressed in TIP It is not necessary to use the choke when starting a warm engine Push in the main switch fully or the remote choke system will not operate 6 Turn the main switch to start and hold it for a maximum of 5 seconds 7 Immediately after the engine starts re lease the main switch and allow it to re t...

Page 49: ... EMU27670 Warming up engine EMU27683 Choke start models After starting the engine allow it to idle for 3 minutes to warm up Failure to do so will shorten engine life Gradually return the choke knob to its home position as the en gine warms up EMU36530 Checks after engine warm up EMU36540 Shifting While tightly moored and without applying throttle confirm that the engine shifts smoothly into forwar...

Page 50: ...sply 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 operating in reverse To shift from in gear forward reverse to neutral 1 Close the throttle so that the engine slows to idle speed 1 Neutral interlock trigger ZMU03721 R N F ZMU05678 ...

Page 51: ...ift into reverse while traveling at planing speeds Loss of control boat swamping or damage to the boat could occur The boat is not equipped with a separate braking system Water resistance stops it af ter the throttle lever is moved back to idle The stopping distance varies depending on gross weight water surface conditions and wind direction EMU27821 Stopping engine Before stopping the engine firs...

Page 52: ...ondi 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 If the boat begins to feel unstable or is hard to steer slow down and or readjust the trim angle The trim angle of the outboard motor helps determine the position of the bow of the boat in the water Correct trim angle will help im prove perf...

Page 53: ... and operating conditions WARNING EWM00400 Stop the engine before adjusting the trim angle Use care to avoid being pinched when removing or installing the rod 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 TIP The outboard motor trim angle can be changed a...

Page 54: ...eed 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 bow steering and making opera tion difficult and dangerous TIP Depending on the type of boat the outboard motor trim angle may have little effect on the trim of the boat when operating EMU27934 Tilting up and down If the engine will be stopped for...

Page 55: ...dle EMU2797B Procedure for tilting up manual tilt models 1 Place the remote control lever gear shift lever in neutral 2 Disconnect the fuel line from the out board motor 3 Place the tilt lock lever if equipped in the release up position 4 Pull up the shallow water lever if equipped 5 Hold the rear of the top cowling with one hand and tilt the engine up fully 6 Push the tilt support knob into the c...

Page 56: ...low water manual tilt models WARNING EWM01781 Run the boat at the lowest possible speed when using the shallow water cruising system The tilt lock mecha nism does not work while the shallow water cruising system is being used Hitting an underwater obstacle could cause the outboard motor to lift out of the water resulting in loss of control Use extra care when operating in re verse Too much reverse...

Page 57: ... tilt support bar will lock automatically supporting the outboard motor in a par tially raised position This outboard mo tor has 2 positions for shallow water cruising 5 To return the outboard motor to the nor mal running position place the tilt lock lever and shallow water lever to the lock position N ZMU03745 N ZMU03525 ZMU03746 ZMU03728 ZMU03729 ZMU03731 ...

Page 58: ...r to prevent them from becoming clogged Also rinse the outside of the outboard motor with fresh wa ter Cruising in muddy turbid or acidic water Yamaha strongly recommends that you use the optional chromium plated water pump kit see page 17 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...

Page 59: ...unning position use an additional support device to secure it in the tilt position The outboard motor should be trailered and stored in the normal running position If there is insufficient road clearance in this position then trailer the outboard motor in the tilt po sition using a motor support device such as a transom saver bar Consult your Yamaha dealer for further details EMU28235 Clamp screw ...

Page 60: ...or other qualified mechanic if the fuel system is to be drained instead 3 Remove the engine top cowling and si lencer cover 4 Install the outboard motor on the test tank 5 Fill the tank with fresh water to above the level of the anti cavitation plate NOTICE If the fresh water level is be low the level of the anti cavitation plate or if the water supply is insuffi cient engine seizure may occur ECM...

Page 61: ...one Protectant 3 Wax the cowling with a non abrasive wax such as Yamaha Silicone Wax EMU28451 Cleaning the outboard motor After use wash the exterior of the outboard motor with fresh water Flush the cooling system with fresh water 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 a...

Page 62: ...arts and ac cessories are available from your Yamaha dealer EMU35520 Maintenance interval guidelines The service intervals provided in the Mainte nance Chart were developed based upon typical use that includes operating at varied speeds with sufficient time for engine warm up and cool down a medium to light load and an average cruising speed near the 3000 to 4000 rpm range As with any engine howev...

Page 63: ...lushed with clean water after each use The symbol indicates the check ups which you may carry out yourself The symbol indicates work to be carried out by your Yamaha dealer Item Actions Initial Every 20 hours 3 months 100 hours 1 year 300 hours 3 years 500 hours 5 years Anode s external Inspection or replace ment as necessary Anode s cylinder head thermostat cover Inspection or replace ment as nec...

Page 64: ... cable Inspection adjustment or replacement as nec essary Spark plug s Inspection or replace ment as necessary Spark plug caps spark plug wires Inspection or replace ment as necessary Water from the cooling water pilot hole Inspection Throttle link throttle cable throttle pick up timing Inspection adjustment or replacement as nec essary Thermostat Inspection or replace ment as necessary Main switc...

Page 65: ...Maintenance 59 EMU34451 Maintenance chart 2 Item Actions Every 1000 hours Exhaust guide exhaust manifold Inspection or replace ment as necessary ...

Page 66: ... plug can indicate something about the condition of the engine For exam 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 re move and inspect the spark plug because heat and deposits will cause t...

Page 67: ...TIP If a torque wrench is not available when you are fitting a spark plug a good estimate of the correct torque is 1 4 to 1 2 a turn past fin ger tight Have the spark plug adjusted to the correct torque as soon as possible with a torque wrench EMU37450 Checking fuel filter Check the fuel filter periodically If any water or foreign matter is found in the filter clean or replace it For cleaning or r...

Page 68: ...engaged se curely Check that each ground lead is properly secured EMU32112 Checking propeller WARNING EWM01881 You could be seriously injured if the en gine accidentally starts when you are near the propeller Before inspecting re moving or installing the propeller place the shift control in neutral turn the main switch to off and remove the key and remove the clip from the engine shut off switch T...

Page 69: ...ller on the propeller shaft NOTICE Be sure to install the thrust washer before installing the propeller other wise the lower case and propeller boss could be damaged ECM01880 3 Install the spacer if equipped and the washer Tighten the propeller nut to the specified torque 4 Align the propeller nut with the propeller shaft hole Insert a new cotter pin in the hole and bend the cotter pin ends NOTICE...

Page 70: ... Always use new gaskets Do not reuse the removed gaskets 4 Remove the oil level plug and gasket to allow the oil to drain completely NOTICE Inspect the used oil after it has been drained If the oil is milky water is getting into the gear case which can cause gear damage Con sult a Yamaha dealer for repair of the lower unit seals ECM00711 TIP For disposal of used oil consult your Yamaha dealer 5 Pu...

Page 71: ...lvent into the tank Install the cap and shake the tank Drain the solvent completely 3 Remove the screws holding the fuel joint assembly Pull the assembly out of the tank 4 Clean the filter located on the end of the suction pipe in a suitable cleaning sol vent Allow the filter to dry 5 Replace the gasket with a new one Re install the fuel joint assembly and tighten the screws firmly EMU29312 Inspec...

Page 72: ...el 2 Check the battery s charge If your boat is equipped with the digital speedome ter the voltmeter and low battery alert functions will help you monitor the bat tery s charge If the battery needs charg ing consult your Yamaha dealer 3 Check the battery connections They should be clean secure and covered by an insulating cover WARNING Bad connections can produce shorting or arcing and cause an ex...

Page 73: ...switch NOTICE If they are left on the electrical system can be damaged ECM01930 2 Disconnect the negative cable s from the negative terminal NOTICE Al ways disconnect all negative ca bles first to avoid a short circuit and damage to the electrical system ECM01940 3 Disconnect the positive cable s and re move the battery from the boat 4 Clean maintain and store the battery according to the manufact...

Page 74: ...A Have serviced by a Yamaha dealer Q Is shift lever in gear A Shift to neutral Engine will not start starter operates Q Is fuel tank empty A Fill tank with clean fresh fuel Q Is fuel contaminated or stale A Fill tank with clean fresh fuel Q Is fuel filter clogged A Clean or replace filter Q Is starting procedure incorrect A See page 36 Q Has fuel pump malfunctioned A Have serviced by a Yamaha deal...

Page 75: ...erviced by a Yamaha dealer Q Is air vent screw on fuel tank closed A Open air vent screw Q Is choke knob pulled out A Return to home position Q Is motor angle too high A Return to normal operating position Q Is carburetor clogged A Have serviced by a Yamaha dealer Q Is fuel joint connection incorrect A Connect correctly Q Is throttle valve adjustment incorrect A Have serviced by a Yamaha dealer Q ...

Page 76: ...type A Inspect spark plug s Clean or replace with recommended type Q Are weeds or other foreign matter tangled on gear housing A Remove foreign matter and clean lower unit Q Is fuel system obstructed A Check for pinched or kinked fuel line or other obstructions in fuel system Q Is fuel filter clogged A Clean or replace filter Q Is fuel contaminated or stale A Fill tank with clean fresh fuel Q Is s...

Page 77: ...amaha dealer EMU29433 Temporary action in emergency EMU29440 Impact damage WARNING EWM00870 The outboard motor can be seriously damaged by a collision while operating or trailering Damage could make the out board motor unsafe to operate If the outboard motor hits an object in the wa ter follow the procedure below 1 Stop the engine immediately 2 Inspect the control system and all com ponents for da...

Page 78: ...enting 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 in the boat to be thrown forward Make sure no one is standing behind you when pulling the starter rope It could whip behind you and injure someone An unguarded r...

Page 79: ...if equipped 5 If equipped the choke knob pull out it when the engine is cold After the engine starts gradually return the choke knob to its home position as the engine warms up 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 1 Start in gear protection...

Page 80: ...501 Treatment of submerged motor If the outboard motor is submerged immedi ately take it to a Yamaha dealer Otherwise some corrosion may begin almost immedi ately NOTICE Do not attempt to run the outboard motor until it has been com pletely inspected ECM00401 ZMU02928 ...

Page 81: ...75 Consumer information EMU29820 YAMAHA MOTOR CORPORATION U S A OUTBOARD MOTOR TWO YEAR LIMITED WARRANTY ...

Page 82: ...Consumer information 76 ...

Page 83: ...Consumer information 77 ...

Page 84: ...Consumer information 78 EMU29841 IMPORTANT WARRANTY INFORMATION IF YOU USE YOUR YAMAHA OUTSIDE THE USA OR CANADA ...

Page 85: ... ZMU01690 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 6L2 9 1V Hyoshi 09 2 5 9 54 ページ 2 ...

Page 86: ...n Japan April 2009 0 1 1 Printed on recycled paper 25 OWNER S MANUAL 6L2 28199 1V U S A Edition LIT 18626 08 35 q Read this manual carefully before operating this outboard motor 6L2 9 1V Hyoshi 09 2 5 9 54 ページ 1 ...

Search results

Summary of Contents for 25

Reviews:

Related manuals for 25

Brands by name

Popular brands

Yamaha 25, Owner'S Manual

Search results

Summary of Contents for 25

Reviews:

Related manuals for 25

Brands by name

Popular brands