Yamaha F250B Owner's Manual
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Yamaha F250B Owner's Manual

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F250B
FL250B
F250B1
FL250B1
OWNER'S MANUAL
Read this manual carefully before operating this
outboard motor.
6BR-28199-72-E0

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Summary of Contents for Yamaha F250B

  • Page 1 F250B FL250B F250B1 FL250B1 OWNER’S MANUAL Read this manual carefully before operating this outboard motor. 6BR-28199-72-E0...
  • Page 2 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 If there is any To the owner question concerning this manual, please con- Thank you for choosing a Yamaha outboard sult your Yamaha dealer. motor. This Owner’s Manual contains infor- To ensure long product life, Yamaha recom-...

  • Page 4: Table Of Contents

    Table of contents Safety information......1 Mounting battery....... 12 Multiple batteries ......12 Outboard motor safety ....1 Propeller selection ......12 Propeller ..........1 Counter rotation models ....13 Rotating parts ........1 Start-in-gear protection ....13 Hot parts..........1 Electric shock ........
  • Page 5 Table of contents Instruments and indicators .... 36 Filling fuel........54 6Y8 Multifunction meters....36 Operating engine ......54 6Y8 Multifunction tachometers ..36 Sending fuel ........54 Change of station ......54 Start-up checks ........ 37 Starting engine ......... 55 Adjusting trolling speed ....
  • Page 6 Table of contents Lubrication........79 Flushing power unit ......79 Checking painted surface of motor... 80 Periodic maintenance....80 Replacement parts ......81 Severe operating conditions..... 81 Maintenance chart 1......82 Maintenance chart 2......84 Greasing........... 85 Cleaning and adjusting spark plug ... 86 Inspecting idling speed.....

  • Page 7: Safety Information

    Safety information EMU33622 area at all times. Be sure no one is in this area Outboard motor safety before operating the power trim and tilt mech- Observe these precautions at all times. anism. EMU36501 The power trim and tilt switches operate even Propeller when the main switch is off.

  • Page 8: Carbon Monoxide

    Have an approved personal flotation device tions. Overloading 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. At a minimum, children swamping.

  • Page 9: Weather

    Safety information EMU33890 Boating safety publications Be informed about boating safety. Additional publications and information can be obtained from many boating organizations. EMU33600 Laws and regulations Know the marine laws and regulations where you will be boating- and obey them. Several sets of rules prevail according to geographic ZMU06025 location, but all are basically the same as the...

  • Page 10: General Information

    General information EMU25171 TIP: Identification numbers record Consult your Yamaha dealer if you have any EMU25183 Outboard motor serial number questions concerning the digital electronic The outboard motor serial number is stamped control serial number. on the label attached to the port side of the clamp bracket.

  • Page 11: Key Number

    General information ZMU05958 1. Key number 1. Digital electronic control serial number loca- tion EMU37290 EC Declaration of Conformity (DoC) This outboard motor conforms to certain por- tions of the European Parliament directive re- lating to machinery. Each conformed outboard motor accompa- nied with EC DoC.EC DoC contains the fol- lowing information;...
  • Page 12 General information ZMU06040...

  • Page 13: Read Manuals And Labels

    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. F250B, FL250B, F250B1, FL250B1...
  • Page 14 General information ZMU06191 Attach engine shut-off cord (lanyard) to EMU34651 Contents of labels your PFD, arm, or leg so the engine The above warning labels mean as follows. stops if you accidentally leave the helm, which could prevent a runaway boat. EWM01681 WARNING EMU33850...
  • Page 15 General information EMU35132 Electrical hazard Symbols The following symbols mean as follows. Notice/Warning ZMU05666 ZMU05696 Read Owner’s Manual ZMU05664 Hazard caused by continuous rotation ZMU05665...

  • Page 16: Specifications And Requirements

    Specifications and requirements EMU34520 Idling speed (in neutral): Specifications 650 ±50 r/min TIP: Engine: “(AL)” stated in the specification data below Type: represents the numerical value for the alumi- 4-stroke V num propeller installed. Displacement: Likewise, “(SUS)” represents the value for 3352.0 cm³...

  • Page 17: Installation Requirements

    Specifications and requirements Propeller mark: Engine oil drain bolt: F250BET T / M 28.0 Nm (2.86 kgf-m, 20.7 ft-lb) F250BET1 T / M Engine oil filter: FL250BET TL / ML 18.0 Nm (1.84 kgf-m, 13.3 ft-lb) FL250BET1 TL / ML Noise and vibration level: Fuel and oil: Operator sound pressure level (ICOMIA...

  • Page 18: Digital Electronic Control Requirements

    If the digital electronic control unit is re- a direct impact on acceleration, top speed, placed fuel economy, and even engine life. Yamaha If the ECM (Electronic control module) of designs and manufactures propellers for ev- the used outboard motor is replaced...

  • Page 19: Counter Rotation Models

    Specifications and requirements Your Yamaha dealer can help you select the propeller with a counter rotation motor, or right propeller for your boating needs. Select a counter rotation propeller with a stan- a propeller that will allow the engine to reach dard motor.

  • Page 20: Fuel Requirements

    EMU36880 Muddy or acidic water Waterproof flashlight with extra batteries. Yamaha strongly recommends that you have An extra engine shut-off cord (lanyard) with clip. your dealer install the optional chromium-plat- Spare parts, such as an extra set of spark ed water pump kit if you use the outboard mo- plugs.

  • Page 21: Emission Control Information

    Specifications and requirements EMU39000 Emission control information The following labels are affixed to outboard motors that conform to US regulations. 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 22 Specifications and requirements EMU25280 EMU25300 One Star—Low Emission Three Stars—Ultra Low Emission The one-star label identifies engines that The three-star label identifies engines that meet the Air Resources Board’s 2001 ex- meet the Air Resources Board’s 2008 ex- haust emission standards. Engines meeting haust emission standards.

  • Page 23: Components

    Components EMU2579M Components diagram TIP: * May not be exactly as shown; also may not be included as standard equipment on all models. F250B, FL250B, F250B1, FL250B1 ZMU06243 1. Top cowling 2. Anti-cavitation plate 3. Trim tab (anode) 4. Propeller* 5.
  • Page 24 Components Single station models ZMU06244 1. Digital electronic control (side-mount type)* 2. Clip 3. Engine shut-off switch 4. Switch panel (for use with side-mount type)* 5. Digital electronic control (single type)* 6. Switch panel (for use with single type)* 7. Digital electronic control (twin type)* 8.
  • Page 25 Components Dual station models / main station ZMU05974 1. Digital electronic control (single type)* 2. Switch panel (for use with single type)* 3. Digital electronic control (twin type)* 4. Switch panel (for use with twin type)* 5. Clip 6. Engine shut-off switch 7.
  • Page 26 Components Dual station models / sub station ZMU05975 1. Digital electronic control (single type)* 2. Switch panel (for use with single type)* 3. Digital electronic control (twin type)* 4. Switch panel (for use with twin type)* 5. Clip 6. Engine shut-off switch 7.

  • Page 27: Digital Electronic Control

    Components ZMU05429 1. Tachometer unit (Square type)* 2. Tachometer unit (Round type)* 3. Speedometer unit (Square type)* 4. Speed & fuel meter unit (Square type)* 5. Speed & fuel meter unit (Round type)* 6. Fuel management meter (Square type)* EMU35942 Digital electronic control The digital electronic control actuates the shifter, the throttle and remote electrical oper-...

  • Page 28: Digital Electronic Control-Active Indicator

    Components ZMU05850 ZMU05959 1. Control lever 1. Control lever 2. Digital electronic control-active indicator 2. Digital electronic control-active indicator 3. Digital electronic control-alert indicator 3. Digital electronic control-alert indicator 4. Free throttle switch 4. Free throttle switch 5. Throttle friction adjuster 5.

  • Page 29: Digital Electronic Control-Alert Indicator

    EMU34983 Digital electronic control-alert indica- The digital electronic control-alert indicator lights when trouble occurs in the connection between the digital electronic control and out- board motor. Consult your Yamaha dealer for details. ZMU05888 1. Digital electronic control-active indicator ZMU06227 1. Digital electronic control-alert indicator ZMU05890 1.

  • Page 30: Control Lever

    Components ZMU05960 ZMU06228 1. Neutral “ ” 1. Digital electronic control-alert indicator 2. Forward “ ” EMU35821 Control lever 3. Reverse “ ” 4. Shift Moving the lever forward from the neutral po- 5. Fully closed sition engages forward gear. Pulling the lever 6.

  • Page 31: Free Throttle Switch

    Components 2. Fully closed 3. Free accelerator Single type ZMU06285 1. Neutral interlock trigger EMU35831 ZMU05880 Free throttle switch In neutral, keep this switch pressed, move the control lever forward, and release the switch 22.5 after the digital electronic control-active indi- cator starts blinking.

  • Page 32: Throttle Friction Adjuster

    Components During operation the digital electronic control- active indicator changes from continuously lit 22.5 to blinking. When the indicator starts blinking, the throttle begins to open after the control le- ver is moved at least 22.5°. After using the free throttle switch, return the control lever to the neutral position.

  • Page 33: Station Selector Switch

    Components Single type tion and sub station have the same functions. You can change the station when the main switch is turned to “ ” (on) and all control le- vers are in Neutral. The switch panel can be operated at both the main station and sub station when the main switch is set to “...
  • Page 34 Components operator fall overboard or leave the helm, the cord will pull out the clip, stopping ignition to the engine. This will prevent the boat from running away under power. EWM01790 WARNING Attach the engine shut-off cord to a se- cure place on your clothing, or your arm or leg while operating.

  • Page 35: Main Switch

    Components Sub station EMU35781 Main switch The main switch controls the ignition system; its operation is described below. Only equipped with the main station. “ ” (off) With the main switch in the “ ” (off) posi- tion, the electrical circuits are off, and the key can be removed.

  • Page 36: Starter Button

    Components Twin type Twin type START START ZMU05821 ZMU05984 Triple type Triple type START START START ZMU05982 ZMU05985 EMU35730 EMU35740 Starter button Engine stop button To start the engine with the electric starter, To stop the engine, push the red button. Only push the black button.

  • Page 37: Power Trim And Tilt Switch On Digital Electronic Control

    Components Twin type ZMU06234 ZMU05987 Triple type ZMU05822 ZMU05988 EMU26153 Power trim and tilt switch on bottom EMU35152 engine cowling Power trim and tilt switch on digital The power trim and tilt switch is located on the electronic control side of the bottom engine cowling. Pressing The power trim and tilt system adjusts the out- the switch “...

  • Page 38: Power Trim And Tilt Switches

    Components the risk of falling overboard and could dis- tract the operator, increasing the risk of collision with another boat or an obstacle. ZMU05964 1. Power trim and tilt switch On the twin engine control, the switch on the control grip controls both outboard motors at the same time.

  • Page 39: Tilt Support Lever For Power Trim And Tilt Model

    Components ECM00840 EMU26341 Tilt support lever for power trim and NOTICE tilt model The trim tab also serves as an anode to To keep the outboard motor in the tilted up po- protect the engine from electrochemical sition, lock the tilt support lever to the clamp corrosion.

  • Page 40: Flushing Device

    Components TIP: When installing the cowling, check to be sure it fits properly in the rubber seal. Be sure to check that the gap between the top cowling and the bottom cowling is even all around the cowling. If the top cowling is loose or the gap is not even, reinstall the cowling.
  • Page 41 Components The buzzer will sound intermittently only when the gear shift is in neutral. If the alert system has activated, stop the engine and consult a Yamaha dealer imme- diately.

  • Page 42: Instruments And Indicators

    7. Battery voltage 8. Oil pressure (4-stroke models) For the optional sensor, consult your Yamaha dealer. The tachometer unit is available in round or square types. Check your tachome- ter unit type.

  • Page 43: Start-Up Checks

    The default engine idle speed is reset auto- alert indicator blinks, consult your Yamaha matically when the display is switched to dealer immediately. the normal display. The default engine idle...

  • Page 44: Overheat Alert

    Do not continue to operate the engine if low oil pressure alert device has activated. a alert device has activated. Consult Serious engine damage will occur. your Yamaha dealer if the problem can- not be located and corrected. EMU36221 Overheat alert...

  • Page 45: Engine Trouble Alert

    Instruments and indicators drain the water from the fuel filter. Get back to the port soon and consult a Yamaha dealer immediately. ZMU05425 ZMU05423 ZMU05426 ECM00920 NOTICE ZMU05424 In such an event, the engine will not oper- ECM00910 ate properly. Consult a Yamaha dealer im- NOTICE mediately.

  • Page 46: 6Y8 Multifunction Speed & Fuel Meters

    3. Multifunction display connecting an optional sensor to the unit. In addition, if optional sensors are connected to the unit, water surface temperature display, depth display, and clock will also be available. For the optional sensors, consult your Yamaha dealer.

  • Page 47: 6Y8 Multifunction Speedometers

    Instruments and indicators temperature display, depth display, and clock will also be available. For the optional sen- sors, consult your Yamaha dealer. After the main switch is first turned on, all the displays come on as a test. After a few sec- onds, the gauge will change to normal opera- tion.
  • Page 48 Instruments and indicators buttons as described in this section. For more information, see the operation manual origi- nally supplied with the meter. After the main switch is first turned on, all the displays come on as a test. After a few sec- onds, the gauge will change to normal opera- tion.

  • Page 49: Engine Control System

    Even if there is no symptom of trouble on shifting or throttle, get back to the port soon and have a Yamaha dealer inspect or repair the outboard motor. ZMU05960 1.
  • Page 50 Engine control system START START ZMU05422 ZMU05827 The buzzer will sound. Main station START START START ZMU05989 Sub station ZMU06297 ZMU05990 ZMU04583 ZMU05991...

  • Page 51: Low Oil Pressure Alert

    Yamaha dealer. ed by overheating, turn off the main switch of Twin engine drive or triple engine drive users: the engine overheating.

  • Page 52: Installation

    If it is tor. mounted too high, propeller ventilation may Consult your Yamaha dealer or boat manu- occur, which will reduce propulsion due to ex- facturer for further information on determining cessive propeller slip, and the water intakes the proper mounting location.
  • Page 53 Test runs at different heights can help determine the optimum mounting height. Consult your Yamaha dealer or boat manufacturer for further information on deter- mining the proper mounting height. ZMU01762...

  • Page 54: Operation

    Operation EMU36381 For the first hour of operation: First-time operation Run the engine at varying speeds up to EMU36391 2000 r/min or approximately half throttle. Fill engine oil For the second hour of operation: The engine is shipped from the factory without Increase engine speed as much as nec- engine oil.

  • Page 55: Remove Cowling

    Check that the fuel filter is clean and free of water. If any water is found in the fuel, or if a significant amount of debris is found, the fuel tank should be checked and cleaned by a Yamaha dealer. ZMU06106 ZMU06108 EMU37670...

  • Page 56: Engine Shut-Off Cord (Lanyard)

    Operation EMU36922 2. Clip Engine shut-off cord (lanyard) 3. Engine shut-off switch Inspect the engine shut-off cord for damage, Twin type such as cuts, breaks, and wear. Single type START START ZMU05818 1. Cord ZMU06235 2. Clip 1. Cord 3. Engine shut-off switch 2.

  • Page 57: Engine Oil

    Check the propeller for damage. el mark and lower level mark. Consult Check for engine oil leaks. your Yamaha dealer if the oil level is out EMU36490 of specified level or if it appears milky or Flushing device dirty.

  • Page 58: Install Cowling

    EMU36940 Install cowling top cowling is loose, have it repaired by your Be sure that all cowling lock levers are re- Yamaha dealer. leased. Be sure that the rubber seal is seated all the way around the engine. Place the cowling on top of the seal.

  • Page 59: Checking Power Trim And Tilt System

    Operation EMU35243 Checking power trim and tilt system EWM01930 WARNING Never get under the lower unit while it is tilted, even when the tilt support lever is locked. Severe injury could occur if the outboard motor accidentally falls. Body parts can be crushed between the motor and the clamp bracket when the motor is trimmed or tilted.

  • Page 60: Battery

    Operation Tilt the outboard motor down. Check that If you use a portable container to store the tilt rod and trim rods operate smooth- and dispense fuel, only use a locally ap- proved GASOLINE container. EMU36582 Touch the fuel nozzle to the filler opening Battery or funnel to help prevent electrostatic Check that the battery is in good condition,...

  • Page 61: Starting Engine

    Operation Turn the main switch to “ ” (on). boat could slow rapidly. This could Push the station selector switch to select cause people and objects in the boat to the station for operating the boat. be thrown forward. Place the control lever in “ ” (neutral). TIP: The start-in-gear protection device prevents the engine from starting except when in neu-...
  • Page 62 Operation Turn the main switch to “ ” (on) to make sure that the digital electronic control-ac- tive indicator lights. The engine can not be started when the digital electronic con- trol-alert indicator lights. TIP: When the main switch is turned to “ ”...
  • Page 63 Operation TIP: The start-in-gear protection device prevents the engine from starting except when in neu- START tral. ZMU05830 START ZMU05829 Turn the main switch “ ” (on) to make sure that the digital electronic control-ac- tive indicator lights. The engine can not be started when the digital electronic con- trol-alert indicator lights.
  • Page 64 Operation after 5 seconds of cranking, return the to “ ” (neutral). Make sure that the digital main switch to “ ” (on), wait 10 sec- electronic control-active indicator of the onds, then crank the engine again. sub station lights. [ECM00192] TIP: The sub station can start and stop the engine.

  • Page 65: Checks After Starting Engine

    Operation ZMU05997 ZMU05984 Push the starter button to start the motor. NOTICE: Never push the starter but- ton while the engine is running. Do not keep the starter motor turning for more than 5 seconds. If the starter mo- tor is turned continuously for more than 5 seconds, the battery will be quickly discharged, thus making it im- possible to start the engine.

  • Page 66: Warming Up Engine

    Selecting outboard motor (tri- the cooling water pilot hole is blocked. ple engine) Consult your Yamaha dealer if the prob- After all engines have started, set all control lem cannot be located and corrected. levers to Neutral. Push the engine selector...
  • Page 67 Operation Operate the port side engine using the port side control lever. The center engine runs at the idling speed. Operate the starboard side engine us- ing the starboard side control lever. Push the engine selector switch twice to operate the center engine. ZMU05999 Operate the port side engine using the port side control lever.

  • Page 68: Shifting

    Operation ZMU06300 ZMU06285 1. Neutral interlock trigger Move the control lever firmly and crisply forward (for forward gear) or backward (for reverse gear) 22.5° (a detent can felt). 22.5˚ 22.5˚ ZMU06301 EMU35124 Shifting EWM00180 WARNING Before shifting, make sure there are no ZMU06238 swimmers or obstacles in the water near 22.5...

  • Page 69: Stopping Boat

    Operation ZMU05829 ZMU06239 EMU31742 Stopping boat EWM01510 WARNING Do not use the reverse function to slow down or stop the boat as it could cause you to lose control, be ejected, or impact the steering wheel or other parts of the boat.
  • Page 70 Operation ECM01740 NOTICE Be sure to tilt the unoperated motor up. Otherwise water could enter the exhaust pipe due to the wave action, causing en- gine trouble. ZMU06004 Operate the port side engine using the port side control lever. When all engines have started, the center engine will run at the average speed of port side and starboard side engines’...
  • Page 71 Operation Operate the starboard side engine using the starboard side control lever. Operating the port side engine and center engine ZMU06009 Operate the center engine using the port side control lever. Operate the starboard side engine using ZMU06006 the starboard side control lever. Operating the center engine ZMU06007 ZMU06002...

  • Page 72: Boat Direction

    Operation EMU35901 Boat direction The illustrations below indicate the boat direction when operating the three outboard motors. When using the port side engine, center engine and starboard side engine ZMU06011 :Boat direction and turning force The size of the arrow is proportional to the turning force. :Propulsion...
  • Page 73 Operation When using the port side engine and starboard side engine ZMU06012 :Boat direction and turning force The size of the arrow is proportional to the turning force. :Propulsion...

  • Page 74: Stopping Engine

    Operation When using the center engine ZMU06013 :Boat direction and turning force The size of the arrow is proportional to the turning force. :Propulsion EMU27821 Stopping engine Before stopping the engine, first let it cool off START for a few minutes at idle or low speed. Stop- ping the engine immediately after operating at high speed is not recommended.

  • Page 75: Procedure For Dual Station Models (Main Station)

    Operation ZMU06014 ZMU05986 Remove the key if the boat will be left un- attended. TIP: The engine can also be stopped by pulling the cord and removing the clip from the engine shut-off switch, then turning the main switch to “ ”...

  • Page 76: Adjusting Trim Angle (Power Trim And Tilt)

    Operation ing the boat more difficult. This increases If equipped with a power trim and tilt the possibility of an accident. If the boat switch located on the bottom cowling, begins to feel unstable or is hard to steer, use the switch only when the boat is at a slow down and/or readjust the trim angle.

  • Page 77: Adjusting Boat Trim

    Operation EMU27912 Adjusting boat trim When the boat is on plane, a bow-up attitude results in less drag, greater stability and effi- ciency. This is generally when the keel line of the boat is up about 3 to 5 degrees. With the bow up, the boat may have a greater tenden- cy to steer to one side or the other.

  • Page 78: Tilting Up And Down

    Operation Bow Down ECM00991 NOTICE Too much trim-in causes the boat to “plow” through the water, decreasing fuel economy Before tilting the outboard motor, follow and making it hard to increase speed. Operat- the procedure under “Stopping engine” ing with excessive trim-in at higher speeds in this chapter.
  • Page 79 Operation Press the power trim and tilt switch “ ” (up) until the outboard motor has tilted up completely. ZMU06020 ZMU06280 Set the tilt support lever to support the en- gine. WARNING! After tilting the out- ZMU05837 board motor, be sure to support it with the tilt support knob or tilt support le- ver.

  • Page 80: Procedure For Tilting Down (Power Trim And Tilt Models)

    Operation EMU35513 Procedure for tilting down (power trim and tilt models) The main switch must be “ ” (on) for the power trim and tilt switch on the digital electronic control to operate. Push the power trim and tilt switch “ ”...

  • Page 81: Shallow Water

    Operation EMU28061 Shallow water EMU32871 Power trim and tilt models The outboard motor can be tilted up partially to allow operation in shallow water. ECM01490 NOTICE If the engine speed is suddenly in- creased when the outboard motor is par- ZMU05840 tially tilted up, the power trim and tilt unit could be damaged.
  • Page 82 Operation Slightly tilt the outboard motor up to the desired position using the power trim and tilt switch. WARNING! Using the power trim and tilt switch on the bottom cowling while the boat is moving or engine is on could increase the risk of falling overboard and could distract the operator, increasing the risk of collision with another boat or an ob-...

  • Page 83: 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 14) 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 84: Maintenance

    It EMU31380 is advisable to have your outboard motor ser- Draining the gasoline from the vapor sep- viced by an authorized Yamaha dealer prior to arator storage. However, you, the owner, with a min- TIP:...

  • Page 85: Lubrication

    91. Inspect the oil for the presence 3. Cap of water that indicates a leaky seal. Seal replacement should be performed by an authorized Yamaha dealer prior to use. Grease all grease fittings. For further de- tails, see page 85. TIP: For long-term storage, fogging the engine with oil is recommended.

  • Page 86: Checking Painted Surface Of Motor

    3. Garden hose adapter perform a maintenance procedure, have a Screw the garden hose adapter onto a Yamaha dealer or other qualified mechan- garden hose, which is connected to a ic do the work. fresh water supply, and then connect it to The procedures involve disassembling the garden hose connector.

  • Page 87: Replacement Parts

    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 pas- sengers.

  • Page 88: Maintenance Chart 1

    When operating in salt water, muddy, other turbid (cloudy), acidic water, the engine should be flushed 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. Initial Every Item Actions...
  • Page 89 Maintenance Initial Every Item Actions 20 hours 100 hours 300 hours 500 hours (3 months) (1 year) (3 years) (5 years) Fuel line(High pres- Inspection sure) Fuel line(High pres- Inspection or replace- sure) ment as necessary Fuel line(Low pres- Inspection sure) Fuel line(Low pres- Inspection or replace-...

  • Page 90: Maintenance Chart 2

    500 hours (3 months) (1 year) (3 years) (5 years) Wire harness connec- Inspection or replace- tions/wire coupler con- ment as necessary nections (Yamaha) Meter/gauge Inspection EMU34451 Maintenance chart 2 Every Item Actions 1000 hours Exhaust guide/exhaust Inspection or replace-...

  • Page 91: Greasing

    Maintenance EMU28941 Greasing Yamaha grease A (water resistant grease) Yamaha grease D (corrosion resistant grease; for propeller shaft) F250B, FL250B, F250B1, FL250B1 ZMU06248...

  • Page 92: Cleaning And Adjusting Spark Plug

    Do not attempt to di- agnose any problems yourself. Instead, take the outboard motor to a Yamaha dealer. You 1. Bolt should periodically remove and inspect the 2. Ignition coil spark plug because heat and deposits will Remove the spark plug.

  • Page 93: Inspecting Idling Speed

    Maintenance EMU35591 Inspecting idling speed ECM01690 NOTICE This procedure must be performed while the outboard motor is in the water. Perform this procedure using the 6Y8 Multi- function Tachometer. Results may vary de- pending on whether testing is conducted with the outboard motor in the water.
  • Page 94 [ECM01850] level measurement will be incorrect. 10. Recheck the oil level using the dipstick to be sure the level falls between the upper and lower marks. Consult your Yamaha dealer if the oil level is out of specified lev-...

  • Page 95: Checking Wiring And Connectors

    For more information on the disposal of switch to “ ” (off) and remove the key, used oil, consult your Yamaha dealer. and remove the clip from the engine shut- Change the oil more often when operating off switch. Turn off the battery cut-off the engine under adverse conditions such switch if your boat has one.

  • Page 96: Removing Propeller

    Remove the propeller nut, washer, and spacer (if equipped). WARNING! Do not Apply Yamaha marine grease or a corro- use your hand to hold the propeller sion resistant grease to the propeller when loosening the propeller nut.

  • Page 97: Changing Gear Oil

    NOTICE: If there is an excessive quantity of metal particles on the mag- netic gear oil drain screw, this can in- dicate lower unit problem. Consult your Yamaha dealer. [ECM01900] TIP: If the propeller nut does not align with the pro-...
  • Page 98 Tightening torque: which can cause gear damage. Con- 9.0 Nm (0.92 kgf-m, 6.6 ft-lb) sult a Yamaha dealer for repair of the lower unit seals. [ECM00711] Put a new gasket on the gear oil drain TIP: screw.

  • Page 99: Inspecting And Replacing Anode(S)

    TIP: Inspect ground leads attached to external an- EMU29322 Checking battery (for electric start odes on equipped models. Consult a Yamaha models) dealer for inspection and replacement of inter- EWM01900 nal anodes attached to the power unit. WARNING...

  • Page 100: Connecting The Battery

    Connecting an accessory battery (optional) connections can produce shorting or If connecting an accessory battery, consult arcing and cause an explosion. your Yamaha dealer about correct wiring. It is [EWM01910] EMU35603 recommendable to install the fuse to the isola- Connecting the battery tor lead as shown in the illustration.
  • Page 101 Maintenance Single engine Twin engines ZMU05939 ZMU05941 1. Isolator lead with circuit protection 1. Starboard side engine 2. Red cable 2. Port side engine 3. Black cable 3. Red cable 4. Fuse 4. Black cable 5. Battery for accessories 5. Isolator leads with circuit protection 6.

  • Page 102: Disconnecting The Battery

    Maintenance Triple engines Disconnect the positive cable(s) and re- move the battery from the boat. Clean, maintain, and store the battery ac- cording to the manufacturer’s instruc- tions. ZMU05956 1. Starboard side engine 2. Center engine 3. Port side engine 4.

  • Page 103: Trouble Recovery

    Yamaha outboard motors. Therefore Q. Has fuel pump malfunctioned? some items may not apply to your model. A. Have serviced by a Yamaha dealer. If your outboard motor requires repair, bring it to your Yamaha dealer. Q. Are spark plug(s) fouled or of incorrect...
  • Page 104 A. Return to normal operating position. A. Fill tank with clean, fresh fuel. Q. Is carburetor clogged? Q. Is fuel filter clogged? A. Have serviced by a Yamaha dealer. A. Clean or replace filter. Q. Is fuel joint connection incorrect? Q. Have ignition parts failed? A.
  • Page 105 Q. Is fuel system obstructed? Q. Is water pump or thermostat faulty? A. Check for pinched or kinked fuel line or oth- A. Have serviced by a Yamaha dealer. er obstructions in fuel system. Q. Is there excess water in fuel filter cup? Q.

  • Page 106: Temporary Action In Emergency

    Q. Is steering pivot loose or damaged? ECM01730 A. Tighten or have serviced by a Yamaha NOTICE dealer. If the boat is operated with only one or two...

  • Page 107: Replacing Fuse

    2. Fuse puller and a fire hazard. 3. Spare fuse (5 A, 10 A, 15 A, 20 A, 30 A, 60 Consult your Yamaha dealer if the new fuse immediately blows again. 1 2 3 4 5 6 7 8 9 ZMU06288 1.

  • Page 108: Power Trim And Tilt Will Not Operate

    Trouble Recovery The fuel filter must be reassembled 8. Engine main fuse (60 A) carefully with the O-ring, filter cup, and 9. Isolator fuse (60 A) hoses in place. Improper assembly or EMU29524 Power trim and tilt will not operate replacement could result in a fuel leak, If the engine cannot be tilted up or down with which could result in a fire or explosion...
  • Page 109 Trouble Recovery 1. Filter cup 2. Water detection switch lead Drain the water in the filter cup by soaking it up with a rag. Firmly screw the filter cup onto the filter housing. NOTICE: Be careful not to twist the water detection switch lead when screwing the filter cup onto the filter housing.

  • Page 110: 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 immediate- ly. NOTICE: Do not attempt to run the out- board motor until it has been completely inspected.
  • Page 112 YAMAHA MOTOR CO., LTD. Printed in Japan March 2009–0.2 × 1 CR Printed on recycled paper...

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