Related Manuals for Yamaha 25
Summary of Contents for Yamaha 25
- Page 1 OWNER’S MANUAL U.S.A.Edition q Read this manual carefully before operating this LIT-18626-08-35 outboard motor. 6L2-28199-1V...
- Page 2 EMU25062 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.
-
Page 3: Important Manual Information
Therefore some items may not apply to ev- tain maximum enjoyment from your new ery model. Yamaha. If you have any question about the EMU25111 operation or maintenance of your outboard motor, please consult a Yamaha dealer. -
Page 4: Table Of Contents
Steering friction adjuster ....24 Boat horsepower rating ....14 Trim tab with anode......25 Mounting motor ....... 14 Trim rod (tilt pin) ......25 Remote control requirements..14 Shallow water lever ......25 Battery requirements..... 14 Tilt lock mechanism......26... - Page 5 Table of contents Tilt support bar ........ 26 tilt models)........50 Cowling lock lever(s) (turn type)..26 Shallow water........ 50 Installation ........27 Cruising in shallow water (manual tilt models)........50 Installation ........27 Cruising in other conditions... 52 Mounting the outboard motor ..27 Maintenance ........
- Page 6 Emergency starting 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: Safety Information
Safety information EMU33622 engine stops if the operator falls overboard Outboard motor safety or leaves the helm. This prevents the boat Observe these precautions at all times. from running away under power and leaving EMU36501 people stranded, or running over people or Propeller objects. -
Page 8: Modifications
Have an approved personal flotation device tions. Overloading or incorrect weight (PFD) on board for every occupant. Yamaha distribution can compromise the boats han- recommends that you must wear a PFD dling and lead to an accident, capsizing or whenever boating. -
Page 9: Weather
Safety information Operate defensively at safe speeds and EMU33870 Boat education and training keep a safe distance away from people, ob- Operators should take a boating safety jects, and other boats. course. This may be required in your state. Do not follow directly behind other boats or Many of the organizations listed in the next waterskiers. -
Page 10: Boating Organizations
Safety information location, but all are basically the same as the National Marine Manufacturers Associa- International Rules of the Road. The rules tion (NMMA) presented in the following section are con- 200 East Randolph Drive densed- and have been provided for your Suite 5100 convenience only. -
Page 11: Rules When Encountering Vessels
Safety information vessel will be able to determine how best to any vessels shown in white area (you are the avoid you. Give-Way vessel). Any vessels in the shad- ed area must yield to you (they are the Give- Give-way vessel Way vessels). -
Page 12: Other Special Situations
Safety information you are the Give-Way vessel. If the other navigate such waters with your boat, you will vessel is on your port (left) side, remember need to carry a portable air horn, available that you should maintain course and direc- from local marine supply stores. - Page 13 Safety information black buoys to starboard. Many bodies of water used by boaters are entirely within the boundaries of a particular state. The Uniform State Waterway Marking System has been devised for these waters. This system uses buoys and signs with dis- tinctive shapes and colors to show regulato- ry or advisory information.
- Page 14 Safety information ZMU01708...
-
Page 15: General Information
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 sto- len. 1. Key number 1. -
Page 16: Read Manuals And Labels
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. ZMU06146... - Page 17 General information ZMU05670...
- Page 18 General information EMU33843 Electrical hazard Symbols The following symbols mean as follows. Notice/Warning ZMU05666 Remote control lever/gear shift lever operat- ing direction, dual direction ZMU05696 Read Owner’s Manual ZMU05667 Engine start/ Engine cranking ZMU05664 Hazard caused by continuous rotation ZMU05668 ZMU05665...
-
Page 19: Specifications And Requirements
25ER 52 minutes 25MH 49.5 kg (109 lb) Alternator output: Performance: 25MH 80 W Full throttle operating range: Maximum generator output: 5000–6000 r/min 25EH 6 A Maximum output: 25ER 6 A 18.4 kW@5500 r/min (25 HP@5500 Drive unit: r/min) Gear positions:... -
Page 20: Installation Requirements
Because the motor is very heavy, spe- cial equipment and training is required Fuel tank capacity: to mount it safely. 25 L (6.60 US gal, 5.50 Imp.gal) Recommended engine oil: Your dealer or other person experienced in YAMALUBE 2-stroke outboard motor... -
Page 21: Mounting Battery
To connect multiple batteries, such as for appropriate. multiple engine configurations or for an ac- Your Yamaha dealer can help you select the cessory battery, consult your Yamaha dealer right propeller for your boating needs. Select about battery selection and correct wiring. -
Page 22: Start-In-Gear Protection
Yamaha re- speed range when carrying lighter loads. comends that you use alcohol-free (see For instructions on propeller removal and in- Gasohol) gasoline whenever possible. -
Page 23: Ring Free Fuel Additive
Ring Free Fuel Additive, available from EMU36351 Emergency equipment your Yamaha dealer. Ring Free Fuel Addi- tive has repeatedly proven its ability to clean Keep the following items onboard in case combustion deposits from inside the engine, there is trouble with the motor. -
Page 24: Emission Control Information
Specifications and requirements plugs. Consult your Yamaha dealer for details. EMU25221 Emission control information EMU25230 North American models This engine conforms to U.S. Environmental Protection Agency (EPA) regulations for ma- rine SI engines. See the label affixed to your engine for details. -
Page 25: Components
Components EMU2579M Components diagram TIP: * May not be exactly as shown; also may not be included as standard equipment on all mod- els. ZMU06147 1. Manual starter handle 16. Restraint cable attachment 2. Choke knob 17. Shallow water lever 3. -
Page 26: Fuel Joint
Components be used as a fuel storage container. Com- mercial users should conform to relevant licensing or approval authority regula- tions. 1. Remote control lever 2. Neutral interlock trigger 3. Neutral throttle lever 4. Main switch / choke switch ZMU03157 5. -
Page 27: Neutral Interlock Trigger
Components 7. Fully open 2. Fully closed EMU26201 EMU26221 Neutral interlock trigger Choke switch To shift out of neutral, first pull the neutral in- To activate the choke system, press in the terlock trigger up. main switch while the key is turned to the “... -
Page 28: Throttle Grip
Components ZMU02849 ZMU03687 1. Throttle indicator 1. Forward “ ” 2. Neutral “ ” EMU25975 3. Reverse “ ” Throttle friction adjuster A friction device provides adjustable resis- EMU25941 tance to movement of the throttle grip or the Throttle grip remote control lever, and can be set accord- The throttle grip is on the tiller handle. -
Page 29: Engine Shut-Off Cord (Lanyard) And Clip
Components EMU25993 Engine shut-off cord (lanyard) and clip The clip must be attached to the engine shut- off switch for the engine to run. The cord should be attached to a secure place on the operator’s clothing, or arm or leg. Should the operator fall overboard or leave the helm, the cord will pull out the clip, stopping ignition to ZMU03689... -
Page 30: Manual Starter Handle
Components EMU26090 Main switch The main switch controls the ignition system; its operation is described below. “ ” (off) With the main switch in the “ ” (off) posi- tion, the electrical circuits are off, and the key can be removed. “... -
Page 31: Trim Tab With Anode
Components the starboard side “B” in the figure. ECM00840 NOTICE The trim tab also serves as an anode to protect the engine from electrochemical corrosion. Never paint the trim tab as it will become ineffective as an anode. ZMU02908 To increase resistance, turn the adjuster clockwise. -
Page 32: Tilt Lock Mechanism
Components to provide more clearance when operating in shallow water. ZMU03699 ECM01660 ZMU04111 NOTICE Do not use the tilt support bar when EMU30530 Tilt lock mechanism trailering the boat. The outboard motor The tilt lock mechanism is used to prevent could shake loose from the tilt support the outboard motor from lifting out of the wa- and fall. -
Page 33: Installation
EWM01720 plate is between the bottom of the boat and WARNING a level 25 mm (1 in) below it. Your dealer or other person experienced in proper outboard motor mounting should show you how to mount your out- board motor. -
Page 34: Clamping The Outboard Motor
Consult your Yamaha dealer or boat man- ufacturer for further information on deter- mining the proper mounting height. For instructions on setting the trim angle of... - Page 35 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...
-
Page 36: Operation
Operation EMU36381 plane, then immediately reduce the First-time operation throttle to 3000 r/min or less. EMU30174 Next two hours: Breaking in engine Accelerate at full throttle onto plane, Your new engine requires a period of break- then reduce engine speed to three-quar- in to allow mating surfaces of moving parts to ter throttle (approximately 4000 r/min). -
Page 37: Fuel Level
If any water is found in the fuel, or if a gine top cowling, release the lock lever and significant amount of debris is found, the fuel lift off the cowling. tank should be checked and cleaned by a Yamaha dealer. ZMU06092 ZMU06140 EMU36442 Fuel system... -
Page 38: Engine Shut-Off Cord (Lanyard)
3. Engine shut-off switch ZMU06117 After installing, check the fitting of the top ZMU03689 cowling by pushing it with both hands. If the top cowling is loose, have it repaired by your 1. Cord Yamaha dealer. 2. Clip 3. Engine shut-off switch... -
Page 39: Battery
Operation Be sure the engine is stopped. Disconnect the fuel line from the fuel tank and tighten the air vent screw on the fuel tank cap. ZMU04677 EMU36582 Battery Check that the battery is in good condition, ZMU06621 and fully charged. Check that the battery connections are clean, secure and covered by insulating covers. -
Page 40: Gasoline And Oil Mixing (100:1)
Pour oil into the portable fuel tank, and then add gasoline. Fuel tank capacity: 25 L (6.60 US gal, 5.50 Imp.gal) ZMU03012 Tighten the filler cap securely. 10. Wipe up any spilled gasoline immediate- ly with dry rags. Dispose rags properly according to local laws or regulations. -
Page 41: Operating Engine
Operation TIP: If using a permanently installed tank, pour the oil gradually as the gasoline is being add- ed to the tank. EMU27451 Operating engine EMU27466 Sending fuel (portable tank) EWM00420 WARNING ZMU02022 Before starting the engine, make sure If there is a fuel joint on the motor, firmly that the boat is tightly moored and that connect the fuel line to the joint. -
Page 42: Starting Engine
Operation firm. During engine operation place the the boat could slow rapidly. This could tank horizontally, otherwise fuel cannot cause people and objects in the boat to be drawn from the fuel tank. be thrown forward. Place the gear shift lever in neutral. ZMU03714 1. - Page 43 Operation ZMU02954 After the engine starts, slowly return the Pull out / turn the choke knob fully. After manual starter handle to its original po- the engine starts, replace / return the sition before releasing it. knob to the home position. Slowly return the throttle grip to the fully closed position.
- Page 44 Operation EMU27565 Electric start models EWM01840 WARNING Failure to attached engine shut-off cord could result in a runaway boat 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 ZMU03744 could tear loose.
- Page 45 Operation If the choke knob is left in the “ ” (start) position while the engine is running, the engine will run poorly or stall. Push the starter button to start the mo- tor. (Repeat if necessary.) ZMU02962 TIP: When the engine is cold, it needs to be warmed up.
- Page 46 Operation be thrown forward. Place the remote control lever in neutral. ZMU03200 TIP: ZMU03087 As a starting point, lift the lever just until you feel resistance, then lift slightly more. TIP: The neutral throttle lever can only be used The start-in-gear protection device prevents when the remote control lever is in neutral.
- Page 47 Operation control. Also, without engine power, the boat could slow rapidly. This could cause people and objects in the boat to be thrown forward. Place the remote control lever in neutral. ZMU03008 After the engine starts, slowly return the manual starter handle to its original po- sition before releasing it.
- Page 48 Operation pressed in. START ZMU01880 ZMU02315 Open the throttle slightly without shifting TIP: using the neutral throttle lever or free ac- celerator. You may need to change the It is not necessary to use the choke when throttle opening slightly depending on starting a warm engine.
-
Page 49: Checks After Starting Engine
Confirm that removing the clip from the en- blocked. Consult your Yamaha dealer if gine shut-off switch stops the engine. the problem cannot be located and cor- Confirm that the engine cannot be started rected. - Page 50 Operation engine and allow it to warm up. To shift out of neutral Pull the neutral interlock trigger up (if equipped). 1. Neutral interlock trigger Move the remote control lever / gear shift lever firmly and crisply forward (for forward gear) or backward (for reverse ZMU05678 gear) [about 35°...
-
Page 51: Stopping Boat
Operation pact the steering wheel or other parts of the boat. This could increase the risk of serious injury. It could also damage the shift mechanism. Do not shift into reverse while traveling at planing speeds. Loss of control, boat swamping, or damage to the boat could occur. -
Page 52: Trimming Outboard Motor
Operation gine shut-off switch, then turning the main switch to “ ” (off). EMU27862 Trimming outboard motor EWM00740 WARNING 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 53: Adjusting Trim Angle For Manual Tilt Models
Operation ZMU02909 1. Trim rod 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 ZMU02858 your boat and operating conditions. -
Page 54: Tilting Up And Down
Operation bow up, the boat may have a greater tenden- ating with excessive trim-in at higher speeds cy to steer to one side or the other. Compen- also makes the boat unstable. Resistance at sate for this as you steer. The trim tab can the bow is greatly increased, heightening the also be adjusted to help offset this effect. -
Page 55: Procedure For Tilting Up (Manual Tilt Models)
Operation few minutes. Otherwise fuel may leak. ECM00241 NOTICE Before tilting the outboard motor, stop the engine by following the procedure on page 45. Never tilt the outboard mo- tor while the engine is running. Severe damage from overheating can result. Do not tilt up the engine by pushing the ZMU04121 tiller handle (if equipped) because this... -
Page 56: Procedure For Tilting Down
Operation lever or knob when trailering the EMU28061 Shallow water boat. The outboard motor could EMU28073 shake loose from the tilt support and Cruising in shallow water (manual tilt fall. If the motor cannot be trailered in models) the normal running position, use an EWM01781 additional support device to secure it WARNING... - Page 57 Operation shift lever in neutral. ZMU03728 ZMU03745 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.
-
Page 58: Cruising In Other Conditions
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. -
Page 59: Maintenance
Yamaha dealer sition using a motor support device such as prior to storage. However, you, the owner, a transom saver bar. Consult your Yamaha with a minimum of tools, can perform the fol- dealer for further details. -
Page 60: Procedure
Stabilizer” to each gallon of fuel. tating parts while the engine is run- TIP: ning. The use of “Yamaha Fuel Conditioner and [EWM00091] Run the engine at a fast idle for 10–15 Stabilizer” eliminates the need to drain the minutes in neutral position. -
Page 61: Lubrication
If necessary, clean Seal replacement should be performed and paint the areas. A touch-up paint is avail- by an authorized Yamaha dealer prior to able from your Yamaha dealer. use. EMU37160 Periodic maintenance Grease all grease fittings. -
Page 62: Replacement Parts
Yamaha marine dealership. A service manual is available for purchase through your Yamaha dealer for owners who have the mechanical skills, tools, and other equipment necessary to perform mainte- nance not covered by this owner’s manual. -
Page 63: Maintenance Chart 1
The “ ” symbol indicates the check-ups which you may carry out yourself. The “ ” symbol indicates work to be carried out by your Yamaha dealer. Initial Every 20 hours Item... - Page 64 Inspection or replace- Thermostat ment as necessary Main switch/stop Inspection or replace- switch/choke switch ment as necessary Wire harness connec- Inspection or replace- tions/wire coupler con- ment as necessary nections Inspection and clean- (Yamaha) Fuel tank ing as necessary...
-
Page 65: Maintenance Chart 2
Maintenance EMU34451 Maintenance chart 2 Every Item Actions 1000 hours Exhaust guide/exhaust Inspection or replace- manifold ment as necessary... -
Page 66: Greasing
Maintenance EMU28932 Greasing Yamaha marine grease (Water resistant grease) ZMU03734 EMU28956 white, this could indicate an intake air leak or Cleaning and adjusting spark plug carburetion problem in that cylinder. Do not The spark plug is an important engine com- attempt to diagnose any problems yourself. -
Page 67: Checking Fuel Filter
Remove the spark plug caps from the Spark plug torque: spark plugs. 25.0 Nm (2.55 kgf-m, 18.4 ft-lb) Remove the spark plug. If electrode ero- sion becomes excessive, or if carbon TIP: and other deposits are excessive, you... -
Page 68: Checking Wiring And Connectors
For idle speed specifications, see page 13. If you have difficulty verify- ing the idle speed, or the idle speed re- quires adjustment, consult a Yamaha dealer or other qualified mechanic. EMU29113 Checking wiring and connectors... -
Page 69: Removing Propeller
Tighten the propeller nut to the [EWM01890] specified torque. Propeller nut tightening torque: 35.0 Nm (3.57 kgf-m, 25.8 ft-lb) Align the propeller nut with the propeller shaft hole. Insert a new cotter pin in the hole and bend the cotter pin ends. - Page 70 Never get under the lower unit while it which can cause gear damage. Con- is tilted, even when the tilt support lever sult a Yamaha dealer for repair of the or knob is locked. Severe injury could lower unit seals.
-
Page 71: Cleaning Fuel Tank
Remove the fuel tank from the boat be- EMU29312 Inspecting and replacing anode(s) fore cleaning it. Work only outdoors in Yamaha outboard motors are protected from an area with good ventilation. corrosion by sacrificial anodes. Inspect the Wipe up any spilled fuel immediately. -
Page 72: Checking Battery (For Electric Start Models)
WARNING tery’s charge. If the battery needs charg- Battery electrolytic fluid is poisonous ing, consult your Yamaha dealer. and caustic, and batteries generate ex- Check the battery connections. They plosive hydrogen gas. When working... -
Page 73: Disconnecting The Battery
Maintenance ATIVE (-) terminal. 1. Red cable 2. Black cable 3. Battery The electrical contacts of the battery and cables must be clean and properly con- nected, or the battery will not start the engine. EMU29371 Disconnecting the battery Turn off the battery cut-off switch (if equipped) and main switch. -
Page 74: Trouble Recovery
Q. Has fuel pump malfunctioned? If your outboard motor requires repair, bring A. Have serviced by a Yamaha dealer. it to your Yamaha dealer. If the engine trouble-alert indicator is flash- Q. Are spark plug(s) fouled or of incorrect ing, consult your Yamaha dealer. - Page 75 Q. Is fuel contaminated or stale? A. Fill tank with clean, fresh fuel. Q. Is carburetor clogged? A. Have serviced by a Yamaha dealer. Q. Is fuel filter clogged? A. Clean or replace filter. Q. Is fuel joint connection incorrect? A.
- Page 76 Q. Is fuel system obstructed? Q. Is water pump or thermostat faulty? A. Check for pinched or kinked fuel line or A. Have serviced by a Yamaha dealer. other obstructions in fuel system. Q. Is there excess water in fuel filter cup? Q.
-
Page 77: Temporary Action In Emergency
EWM00631 Q. Is steering pivot loose or damaged? WARNING A. Tighten or have serviced by a Yamaha Substituting an incorrect fuse or a piece dealer. of wire could allow excessive current EMU29433 flow. -
Page 78: Starter Will Not Operate
2. Fuse (10 A) other objects away when starting the engine. Use the emergency starter rope Consult your Yamaha dealer if the new fuse only as instructed. Do not touch the fly- immediately blows again. wheel or other moving parts when the EMU29533 engine is running. - Page 79 Trouble Recovery ZMU03740 ZMU02334 1. Start-in-gear protection cable Remove the starter/flywheel cover after ON START removing the bolt(s). ZMU01906 If equipped the choke knob, pull out it when the engine is cold. After the engine starts, gradually return the choke knob ZMU03741 to its home position as the engine warms Prepare the engine for starting.
-
Page 80: Treatment Of Submerged Motor
EMU33501 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. -
Page 81: Consumer Information
Consumer information EMU29820 YAMAHA MOTOR CORPORATION, U.S.A. OUTBOARD MOTOR TWO YEAR LIMITED WARRANTY... - Page 82 Consumer information...
- Page 83 Consumer information...
-
Page 84: Important Warranty Information If You Use Your Yamaha Outside The Usa Or Canada
Consumer information EMU29841 IMPORTANT WARRANTY INFORMATION IF YOU USE YOUR YAMAHA OUTSIDE THE USA OR CANADA... - Page 86 Printed in Japan April 2009–0.1 × 1 ! Printed on recycled paper...
Need help?
Do you have a question about the 25 and is the answer not in the manual?
Questions and answers