Yamaha 250G Owner's Manual
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Yamaha 250G Owner's Manual

Yamaha 250G Owner's Manual

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250G
L250G
OWNER'S MANUAL
6S3-28199-70-E0

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Summary of Contents for Yamaha 250G

  • Page 1 250G L250G OWNER’S MANUAL 6S3-28199-70-E0...
  • Page 2 EMU25050 Read this owner’s manual carefully before operating your outboard motor.

  • Page 3: Important Manual Information

    Yamaha. If you have any question about the also be voided. operation or maintenance of your outboard Some countries have laws or regulations re- motor, please consult a Yamaha dealer.

  • Page 4: Table Of Contents

    Table of contents General information ......1 Trip meter ........16 Clock ..........16 Identification numbers record..1 Fuel gauge ........17 Outboard motor serial number ..1 Fuel warning indicator ..... 17 Key number........1 Low battery voltage warning EC label...........
  • Page 5 Table of contents Procedure ........33 Checking battery (for electric start Trimming outboard motor....34 models) ......... 58 Adjusting trim angle ......34 Connecting the Battery....58 Adjusting boat trim ......35 Disconnecting the battery....59 Tilting up and down ....... 36 Checking top cowling ......

  • Page 6: 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...

  • Page 7: Safety Information

    General information is a good idea to wear a PFD whenever boating. At a minimum, children and non- swimmers should always wear PFDs, and everyone should wear PFDs when there are potentially hazardous boating condi- tions. Gasoline is highly flammable, and its va- pors are flammable and explosive.

  • Page 8: Important Labels

    EMU25451 procedure with the dealer. Label ENGINE OIL ONLY Never illegally discard (dump) the product. Yamaha recommends consulting the deal- Pour the engine oil into this oil tank, not gasoline. er on discarding the product. RECOMMENDED OIL: EMU25382...

  • Page 9: Gasoline

    EMU25650 Yamaha outboard motors are fitted with pro- Engine oil pellers chosen to perform well over a range Recommended engine oil: of applications, but there may be uses where...

  • Page 10: Start-In-Gear Protection

    For instructions on propeller removal and in- stallation, see page 54. EMU25760 Start-in-gear protection Yamaha outboard motors affixed with the pictured label 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.

  • Page 11: Basic Components

    Basic components EMU25797 Main components NOTE: * May not be exactly as shown; also may not be included as standard equipment on all mod- els. 250G, L250G YAMAHA YAMAHA SPEED FUEL MANAGEMENT Km/h knot mile Km/L TRIP TIME BATT ECON SYNC...

  • Page 12: Remote Control Lever

    Basic components 1. Power trim and tilt switch 1. Neutral “ ” 2. Remote control lever 2. Forward “ ” 3. Neutral interlock trigger 3. Reverse “ ” 4. Neutral throttle lever 4. Shift 5. Main switch / choke switch 5.

  • Page 13: Neutral Throttle Lever

    Basic components “ ” (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. 1. Neutral interlock trigger EMU26211 Neutral throttle lever ZMU03160...

  • Page 14: Throttle Friction Adjuster

    Basic components which could result in an accident. ZMU04575 1. Fully open 2. Fully closed 3. Free accelerator NOTE: The free accelerator button can only be used when the remote control lever is in the neutral position. After the button is pushed, the throttle be- gins to open after the remote control lever is moved at least 35°.

  • Page 15: Main Switch

    Basic components your arm or leg while operating. EMU26090 Main switch Do not attach the lanyard to clothing The main switch controls the ignition system; that could tear loose. Do not route the its operation is described below. lanyard where it could become entan- “...

  • Page 16: Power Trim And Tilt Switch On Bottom Engine Cowling

    Basic components outboard motor angle in relation to the tran- cle. som. Pressing the switch “ ” (up) trims the outboard motor up, then tilts it up. Pressing the switch “ ” (down) tilts the outboard mo- tor down and trims it down. When the switch is released, the outboard motor will stop in its current position.

  • Page 17: Trim Tab With Anode

    Basic components NOTE: On the dual engine control, the switch on the remote control grip controls both out- board motors at the same time. For instructions on using the power trim and tilt switches, see pages 34 and 36. EMU26241 Trim tab with anode The trim tab should be adjusted so that the ZMU02525...

  • Page 18: Top Cowling Lock Levers

    Basic components EMU31320 Top cowling lock levers To remove the top cowling, raise the lower part of the front lock lever to release the lock. Next, turn the rear lock levers to release them, allowing the top cowling to be re- moved.

  • Page 19: Oil Level Indicator (Digital Type)

    Basic components NOTE: The water separator and engine trouble warning indicators only operate when the en- gine is equipped with the appropriate func- tions. EMU26550 Oil level indicator (digital type) This indicator shows the engine oil level. If the oil level falls below the lower limit, the ZMU04632 warning indicator will start to blink.

  • Page 20: Trim Meter (Digital Type)

    Basic components lect the desired unit of measurement by set- EMU26640 Hour meter ting the selector switch on the back of the The digital hour meter is mounted on the en- gauge. See the illustration for settings. gine inside the top cowling. It measures the total number of hours the engine has been run since manufacture.

  • Page 21: Trip Meter

    Basic components ZMU04633 NOTE: Changing the display format The trip distance is shown in kilometers or Pressing the “ ” (mode) button chang- miles depending upon the unit of measure- es the display format in the following pat- ment selected for the speedometer. tern: The trip distance is kept in memory by bat- Total hours→Trip hours→Display off...

  • Page 22: Fuel Gauge

    When all segments are showing, the fuel tank is full. ECM00860 CAUTION: The Yamaha fuel tank sensor differs from conventional sensors. Incorrectly setting the selector switch on the gauge will give false readings. Consult your Yamaha dealer on how to correctly set the selec- tor switch.

  • Page 23: Fuel Management Meter

    Basic components EMU26740 Fuel management meter The fuel management meter shows the state of the fuel consumption while the engine is running. ZMU01749 Use the “ ” (set) button to rotate the fuel flow display in the following order: Press the “ ”...

  • Page 24: Fuel Consumption Meter

    (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...

  • Page 25: Warning System

    If the warning system has activated, stop the EMU26801 engine and check the cooling water inlet for Warning system clogging. ECM00090 CAUTION: Do not continue to operate the engine if a warning device has activated. Consult your Yamaha dealer if the problem can-...

  • Page 26: Oil Level Warning And Oil Filter Clogging Warning

    Basic components The buzzer will sound (if equipped on the tiller handle, remote control box, or main switch panel). START START ZMU03858 NOTE: Dual engine drive users: ZMU05017 Should the overheat warning system of one If the warning system has been activated, engine activate, the engine will slow down stop the engine and check for the cause.
  • Page 27 Basic components ZMU01952 1. Oil filter...

  • Page 28: Operation

    Operation EMU26901 specific boat and motor combination. Installation EWM00830 ECM00110 WARNING CAUTION: Improper mounting of the outboard mo- Incorrect engine height or obstructions tor could result in hazardous conditions to smooth water flow (such as the design such as poor handling, loss of control, or or condition of the boat, or accessories fire hazards.

  • Page 29: Breaking In Engine

    Test runs at different heights can help deter- mine the optimum mounting height. Con- sult your Yamaha dealer boat manufacturer for further information on de- termining the proper mounting height. For instructions on setting the trim angle of the outboard motor, see page 34.

  • Page 30: Gasoline And Engine Oil Mixing Chart (50:1)

    Check fuel line connections to be sure they throttle to 3000 r/min or less. are tight (if equipped Yamaha fuel tank or Second hour: boat tank). Accelerate at full throttle onto plane, Be sure the fuel tank is positioned on a se-...

  • Page 31: Oil

    After any air in the oil lines has or explosion could result. been expelled, the oil injection system This engine uses the Yamaha oil injection should supply oil normally. If no oil is system, which provides superior lubrication flowing after 10 minutes of idling, consult by ensuring the proper oil ratio for all operat- your Yamaha dealer.
  • Page 32 Imp gal) can be added, and the bottom oil level line indicates approximately 3.8 L (1 US gal, 0.8 Imp gal) can be added. Turn on the main switch. The Yamaha oil injection system will automatically feed oil from the remote oil tank to the...

  • Page 33: Oil Level Indicator Operation

    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 Oil level warning Engine oil Remote oil indicator indicator (analog Remarks tank tank (digital tachometer) tachometer)

  • Page 34: Operating Engine

    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. EMU27490 When the air vent screw is loosened, Starting engine...
  • Page 35 Operation arm or leg. Then install the lock plate on the other end of the lanyard into the en- gine stop switch. EWM00120 WARNING Attach the engine stop switch lanyard to a secure place on your clothing, or your arm or leg while operating. Do not attach the lanyard to clothing that could tear loose.
  • Page 36 Operation START ZMU03753 ZMU04592 NOTE: On remote controls equipped with a neu- tral throttle lever, a good starting point is to START lift the lever just until you feel resistance, then lift slightly more. The neutral throttle lever or free accelera- tor can only be used when the remote con- trol lever is in neutral.

  • Page 37: Warming Up Engine

    Consult your Yamaha dealer if the problem cannot be located and corrected. EMU27740 Shifting...

  • Page 38: Reverse (Automatic Reverse Lock And Power Trim And Tilt Models)

    Operation EMU27784 EMU27820 Reverse (automatic reverse lock and Stopping engine power trim and tilt models) Before stopping the engine, first let it cool off EWM00190 for a few minutes at idle or low speed. Stop- WARNING ping the engine immediately after operating When operating in reverse, go slowly.

  • Page 39: Trimming Outboard Motor

    Operation switch to “ ” (off). gle, also be careful not to pinch any body parts between the drive unit and EMU27861 clamp bracket. Trimming outboard motor Use caution when trying a trim position The trim angle of the outboard motor helps for the first time.

  • Page 40: Adjusting Boat Trim

    Operation ZMU05304 Bow Up 1. Power trim and tilt switch Too much trim-out puts the bow of the boat too high in the water. Performance and econ- To raise the bow (trim-out), press the switch omy are decreased because the hull of the “...

  • Page 41: Tilting Up And Down

    Operation on page 33. 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 tiller handle (if equipped) because this could break the handle. EMU28005 Procedure for tilting up Power trim and tilt models / power tilt models...
  • Page 42 Operation ZMU05305 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 pres- sure.

  • Page 43: Procedure For Tilting Down

    Operation EMU28053 Procedure for tilting down Power trim and tilt models / power tilt models 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.

  • Page 44: Cruising In Other Conditions

    Operation ting up for and cruising in shallow water. Otherwise severe damage from overheat- ing can result. EMU28184 Procedure for power trim and tilt / power tilt models Place the gear shift lever in neutral. ZMU01935 ZMU03525 ZMU04602 ZMU04588 Slightly tilt the outboard motor up to the desired position using the power trim / tilt ZMU05316 switch.
  • Page 45 NOTE: For cooling system flushing instructions, see page 42. Cruising in turbid water Yamaha strongly recommends that you use the optional chromium-plated water pump kit (not available for some models) if you use the outboard motor in turbid (muddy) water...

  • Page 46: Maintenance

    Maintenance EMU28217 Min. cold cranking amps (CCA/EN): Specifications 711.0 A Dimension: Min. rated capacity (20HR/IEC): Overall length: 100.0 Ah 854 mm (33.6 in) Alternator output for battery DC: Overall width: 35.0 A 562 mm (22.1 in) Drive unit: Overall height X: Gear positions: 1785 mm (70.3 in) Forward-neutral-reverse...

  • Page 47: Transporting And Storing Outboard Motor

    Either the engine sition using a motor support device such as water pump will be damaged or the en- a transom saver bar. Consult your Yamaha gine will be damaged from overheating. dealer for further details.

  • Page 48: Lubrication (Oil Injection Models)

    Seal replacement should be per- parts while the engine is running. formed by an authorized Yamaha dealer Run the engine at a fast idle for a few prior to use. minutes in neutral position.

  • Page 49: Battery Care

    Maintenance EMU28430 Disconnect and remove the battery from Battery care the boat. Always disconnect the black EWM00330 negative cable first to prevent the risk of WARNING shorting. Battery electrolytic fluid is dangerous; it Clean the battery casing and terminals. contains sulfuric acid and therefore is Fill each cell to the upper level with dis- poisonous and highly caustic.

  • Page 50: Cleaning The Outboard Motor

    A touch-up paint is avail- ECM00540 CAUTION: able from your Yamaha dealer. Do not leave the garden hose connector loose on the bottom cowling fitting or let the hose hang free during normal opera-...

  • Page 51: Periodic Maintenance

    Be sure to turn off the engine when you perform maintenance unless otherwise specified. If you or the owner is not famil- iar with machine servicing, this work should be done by your Yamaha dealer or other qualified mechanic. EMU28510 Replacement parts...

  • Page 52: Maintenance Chart

    When operating in salt water, turbid or muddy 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 50 hours Item...
  • Page 53 Maintenance Initial Every 50 hours Item Actions 10 hours hours (6 hours (1 (1 month) months) months) year) Throttle position sen- Inspection / adjustment Inspection / replace- Water pump ment Oil pump Inspection / adjustment Oil tank water drain Inspection / cleaning Cleaning / adjustment / Spark plug(s) replacement...

  • Page 54: Greasing

    Maintenance EMU28940 Greasing Yamaha grease A (water resistant grease) Yamaha grease D (corrosion resistant grease; for propeller shaft) 250G, L250G ZMU05307 EMU28952 damaged insulator could allow external Cleaning and adjusting spark plug sparks, which could lead to explosion or EWM00560 fire.

  • Page 55: Checking Fuel System

    Improper repairs can make the outboard unsafe to operate. Check the fuel lines for leaks, crack, or mal- function. If a problem is found, your Yamaha dealer or other qualified mechanic should re- 1. Spark plug gap pair it immediately.

  • Page 56: Inspecting Fuel Filter

    If any water is found in the If you have any question about properly fuel, the Yamaha portable fuel tank or doing this procedure, consult your other fuel tanks should be checked and Yamaha dealer.

  • Page 57: Inspecting Idling Speed

    There is a water trap at the bottom of the en- fuel filter unit will float. If so, remove the cup gine oil tank. If water or foreign matter is vis- and drain the water. ible in this trap, consult your Yamaha dealer. EMU29041 Inspecting idling speed EWM00451...

  • Page 58: Checking Wiring And Connectors

    Maintenance EMU29120 Exhaust leakage Start the engine and check that no exhaust leaks from the joints between the exhaust cover, cylinder head, and body cylinder. EMU29130 Water leakage Start the engine and check that no water leaks from the joints between the exhaust cover, cylinder head, and body cylinder.

  • Page 59: Checking Propeller

    Activate the trim-up switch until the tilt rod is fully extended. Unlock the tilt sup- port 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.

  • Page 60: Removing The Propeller

    Maintenance EMU30660 Removing the propeller EMU29194 Spline models Straighten the cotter pin and pull it out using a pair of pliers. Remove the propeller nut, washer, and spacer (if equipped). ZMU01897 Checkpoints Check each of the propeller blades for wear, erosion from cavitation or ventila- tion, or other damage.

  • Page 61: Changing Gear Oil

    Severe injury could eration and be lost. occur if the outboard motor accidental- ly falls. Apply Yamaha marine grease or a cor- rosion resistant grease to the propeller Tilt the outboard motor so that the gear shaft.

  • Page 62: Inspecting And Replacing Anode(S)

    Consult a Yamaha dealer for re- anodes. pair of the lower unit seals. ECM00720 NOTE: CAUTION: For disposal of used oil consult your Yamaha Do not paint anodes, as this would render dealer. them ineffective. With the outboard motor in a vertical po- NOTE:...

  • Page 63: Checking Battery (For Electric Start Models)

    (for example: welding charge the battery when it is low. equipment, lighted cigarettes, and so NOTE: on.) Consult a Yamaha dealer when charging or DO NOT SMOKE when charging or han- re-charging batteries. dling batteries. KEEP BATTERIES AND ELECTROLYTIC EMU29351 FLUID OUT OF REACH OF CHILDREN.

  • Page 64: Disconnecting The Battery

    7. Small red lead for accessory battery charg- ing (optional part) NOTE: If a battery selector switch is desired, consult your YAMAHA dealer about correct wiring. EMU29370 Disconnecting the battery Disconnect the BLACK cable from the NEG- ATIVE (-) terminal first. Then disconnect the ZMU03546 RED cable from the POSITIVE (+) terminal.

  • Page 65: Coating The Boat Bottom

    Maintenance EMU29400 Coating the boat bottom A clean hull improves boat performance. The boat bottom should be kept as clean of ma- rine growth as possible. If necessary, the boat bottom can be coated with an anti-foul- ing paint approved for your area to inhibit marine growth.

  • Page 66: 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 warning indicator is Q. Are spark plug(s) fouled or of incorrect flashing, consult your Yamaha dealer.
  • Page 67 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 68 Trouble Recovery A. Have serviced by a Yamaha dealer. Q. Are weeds or other foreign matter tangled on gear housing? Q. Is load on boat improperly distributed? A. Remove foreign matter and clean lower A. Distribute load to place boat on an even unit.

  • Page 69: Temporary Action In Emergency

    ECM00370 Q. Is steering pivot loose or damaged? CAUTION: A. Tighten or have serviced by a Yamaha If the boat is operated with one engine in dealer. the water but not running, water may run...

  • Page 70: Replacing Fuse

    When the emergency starter rope is NOTE: used to start the engine, the start-in- Consult your Yamaha dealer if the new fuse gear protection device does not oper- immediately blows again. ate. Make sure the remote control lever is in neutral.

  • Page 71: Emergency Starting Engine

    Trouble Recovery could result in an accident. Attach the engine stop switch lanyard to a secure place on your clothing, or your arm or leg while operating. Do not attach the lanyard to clothing that could tear loose. Do not route the cord where it could become entangled, preventing it from functioning.

  • Page 72: Engine Fails To Operate

    Trouble Recovery Before using this procedure, see page 61 and eliminate causes such as low fuel or overheating. ON START EWM01200 WARNING When the emergency circuit is used, the engine could run faster than normal at idle and low speeds. Be prepared for slightly increased speeds when operat- ZMU01906 ing at low throttle settings.

  • Page 73: Treatment Of Submerged Motor

    EMU29760 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. If you cannot immediately take the outboard motor to a Yamaha dealer, follow the proce-...
  • Page 74 Feed fogging oil or engine oil through the carburetor(s) and spark plug holes while cranking with the manual starter or emergency starter rope. ZMU01911 Take the outboard motor to a Yamaha dealer as soon as possible. ECM00400 CAUTION: Do not attempt to run the outboard motor...
  • Page 76 YAMAHA MOTOR CO., LTD. Printed in Japan July 2005–0.1 × 1 ! Printed on recycled paper...

This manual is also suitable for:

L250g

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