Yamaha 90 Owner's Manual
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Yamaha 90 Owner's Manual

Yamaha 90 Owner's Manual

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90
OWNER'S MANUAL
U.S.A.Edition
LIT-18626-06-60
6H1-28199-16

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Summary of Contents for Yamaha 90

  • Page 1 OWNER’S MANUAL U.S.A.Edition LIT-18626-06-60 6H1-28199-16...
  • Page 2 EMU25060 ZMU01690 Read this owner’s manual carefully before operating your outboard motor.
  • Page 3 EMU25110 tain maximum enjoyment from your new Yamaha. If you have any question about the operation or maintenance of your outboard motor, please consult a Yamaha dealer. In this Owner’s Manual particularly important OWNER’S MANUAL...

  • Page 4: Table Of Contents

    Table of contents General information ......1 Trim tab with anode......16 Trim rod (tilt pin) ......17 Identification numbers record..1 Tilt support lever for power trim and Outboard motor serial number ..1 tilt or hydro tilt model..... 17 Key number........
  • Page 5 Cleaning and adjusting spark IMPORTANT WARRANTY plug ..........50 INFORMATION IF YOU USE Checking fuel system ...... 50 YOUR YAMAHA OUTSIDE THE Inspecting fuel filter ......51 USA OR CANADA ...... 75 Cleaning fuel filter ......51 Inspecting idling speed ....52 Checking water in engine oil tank ...

  • 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 should give you an understanding of the motor and its operation. Before operating the boat, read any own- EMISSION CONTROL INFORMATION er’s or operator’s manuals supplied with it 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.

  • Page 8: Important Labels

    Never illegally discard (dump) the product. Attach the engine stop switch lanyard cord Yamaha recommends consulting the deal- to a secure place on your clothing, or your er on discarding the product. arm or leg while operating. If you acciden- Be informed about boating safety.

  • Page 9: Basic Boating Rules (Rules Of The Road)

    General information EMU25401 These rules determine which vessel has the Label right-of-way, and what each vessel should EWM01260 WARNING Stand-on vessel Be sure shift control is in neutral before The vessel with the right-of-way has the duty starting engine. (except 2HP) to continue its course and speed, except to Do not touch or remove electrical parts avoid an immediate collision.

  • Page 10: Other Special Situations

    General information sel head-on) Crossing When two power driven vessels are crossing Crossing: (you are traveling across the oth- each other’s path close enough to run the er vessel’s path) risk of collision, the vessel which has the oth- Overtaking: (you are passing or being er on the starboard (right) side must keep out passed by another vessel) of the way of the other.
  • Page 11 General information bend that may obstruct the view of other wa- er is going towards the port). This means that ter vessels, the operator should sound a pro- red buoys are passed on the starboard (right) side when proceeding from open wa- longed blast on the whistle (4 to 6 seconds).

  • Page 12: Fueling Instructions

    General information ZMU01708 away from sparks, flames, or other EMU25540 Fueling instructions sources of ignition. EWM00010 Stop engine before refueling. WARNING Refuel in a well-ventilated area. Refuel GASOLINE AND ITS VAPORS ARE HIGH- portable fuel tanks off the boat. LY FLAMMABLE AND EXPLOSIVE! Take care not to spill gasoline.

  • Page 13: Gasoline

    The performance of your outboard motor will the fuel meets minimum octane ratings. be critically affected by your choice of propel- Yamaha does not recommended gasohol ler, as an incorrect choice could adversely containing methanol because it can cause affect performance and could also seriously fuel system damage or engine performance damage the motor.

  • Page 14: Start-In-Gear Protection

    54. on the engine. EMU25770 Start-in-gear protection Yamaha outboard motors are fitted with pro- Yamaha outboard motors or Yamaha-ap- pellers chosen to perform well over a range proved remote control units are equipped of applications, but there may be uses where with start-in-gear protection device(s).

  • Page 15: Basic Components

    Basic components EMU25796 Main components NOTE: * May not be exactly as shown; also may not be included as standard equipment on all mod- els. ZMU05244 1. Top cowling 15. Tachometer* 2. Top cowling lock lever 16. Trim meter* 3. Anti-cavitation plate 17.

  • Page 16: Fuel Joint

    Basic components licensing or approval authority regula- tions. 1. Power trim and tilt switch ZMU02284 2. Remote control lever 3. Neutral interlock trigger 1. Fuel joint 4. Neutral throttle lever 2. Fuel gauge 5. Main switch / choke switch 3. Fuel tank cap 6.

  • Page 17: Neutral Interlock Trigger

    Basic components 6. Throttle 7. Fully open EMU26201 Neutral interlock trigger To shift out of neutral, first pull the neutral in- terlock trigger up. 1. Fully open 2. Fully closed EMU25911 Tiller handle To change direction, move the tiller handle to the left or right as necessary.

  • Page 18: Throttle Grip

    Basic components 1. Throttle indicator 1. Forward “ ” 2. Neutral “ ” EMU25970 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 19: Engine Stop Lanyard Switch

    Basic components NOTE: The engine cannot be started with the lock plate removed. When constant speed is desired, tighten the adjuster to maintain the desired throttle set- ting. EMU25990 Engine stop lanyard switch 1. Lanyard 2. Lock plate The lock plate must be attached to the en- gine stop switch for the engine to run.

  • Page 20: Main Switch

    Basic components EMU26090 EMU26141 Main switch Power trim and tilt switch on remote The main switch controls the ignition system; control or tiller handle its operation is described below. The power trim and tilt system adjusts the “ ” (off) outboard motor angle in relation to the tran- With the main switch in the “...

  • Page 21: Power Trim And Tilt Switch On Bottom Engine Cowling

    Basic components ZMU03851 EMU26151 NOTE: Power trim and tilt switch on bottom For instructions on using the power trim and engine cowling tilt switch, see page 37. The power trim and tilt switch is located on EMU26241 the side of the bottom engine cowling. Press- Trim tab with anode ing the switch “...

  • Page 22: Trim Rod (Tilt Pin)

    Basic components ZMU03853 1. Trim tab EMU26372 Top cowling lock lever(s) (turn type) 2. Bolt To remove the engine top cowling, turn the 3. Cap lock lever(s) and lift off the cowling. When in- EMU26261 stalling the cowling, check to be sure it fits Trim rod (tilt pin) properly in the rubber seal.

  • Page 23: Flushing Device

    Basic components EMU26460 Flushing device This device is used to clean the cooling wa- ter passages of the motor using a garden hose and tap water. NOTE: For details on usage, see page 45. ZMU04577 1. Tachometer 2. Oil level indicator EMU26491 Digital tachometer The tachometer shows the engine speed...

  • Page 24: Oil Level Indicators (Three Indicators)

    Basic components warning indicators only operate when the en- gine is equipped with the appropriate func- tions. EMU26540 Oil level indicators (three indicators) The indicators on the gauge show the status of the oil level. For details on how to read the indicators, see page 28.

  • Page 25: Trim Meter (Digital Type)

    Warning system ECM00090 CAUTION: Do not continue to operate the engine if a warning device has activated. Consult your Yamaha dealer if the problem can- not be located and corrected. EMU26814 Overheat warning ZMU01869 This engine has an overheat warning device.

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

    Basic components Activation of warning device The engine speed will automatically de- crease to about 2000 r/min. If equipped with an overheat warning indi- cator, it will light. ZMU03858 EMU26845 Oil level warning and oil filter clogging warning Oil injection models ZMU01757 This engine has an oil level warning system.
  • Page 27 Basic components The buzzer will sound (if equipped on the tiller handle, remote control box, or main switch panel). ZMU03025 If the warning system has been activated, stop the engine and check for the cause. NOTE: The warning for oil filter clogging is similar to the warnings for low oil level and overheat- ing.

  • 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

    Be sure to mix gasoline and oil complete- mine the optimum mounting height. Con- ly, otherwise the engine may be dam- sult your Yamaha dealer boat aged. manufacturer for further information on de- EMU30310 termining the proper mounting height.

  • Page 30: Preoperation Checks

    Operation 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- then reduce engine speed to three-quar- cure, flat surface, and that the fuel line is ter throttle (approximately 4000 r/min).

  • Page 31: Filling Fuel And Engine Oil

    Yamaha recommends the use of occur. Ring Free Fuel Additive, available from EMU27233 your Yamaha dealer. Ring Free Fuel Addi- Filling fuel and engine oil tive has repeatedly proven its ability to clean EMU27242 combustion deposits from inside the engine,...
  • Page 32 For details on reading the indicator seg- ments, see page 28. To fill the engine oil tank, proceed as follows: Engine oil tank capacity: 3.3 L (3.49 US qt) (2.90 Imp.qt) Turn the oil filler access cap on the top cowling counterclockwise and open it. ZMU03371 1.

  • Page 33: Oil Level Indicator Operation

    Operation EMU27321 Oil level indicator operation The various functions of the oil level system are as follows: EMU27370 Electric start models Oil level Oil level warning warning indicator indicator (analog Engine oil tank Remarks (digital tachometer/ tachometer) bottom cowling) Green more than 1130 No refilling necessary.

  • Page 34: Starting Engine

    Operation tank cap, loosen it 2 or 3 turns. zontally, otherwise fuel cannot be drawn from the fuel tank. Squeeze the primer pump with the outlet end up until you feel it become firm. ZMU02295 If there is a fuel joint on the motor, firmly connect the fuel line to the joint.
  • Page 35 Operation gine stop switch. Turn the main switch to “ ” (start), and hold it for a maximum of 5 seconds. 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 EMU27662 Electric start and remote control models Place the remote control lever in neutral. Turn the main switch to “ ” (on). Turn the main switch to “ ” (start), and hold it for a maximum of 5 seconds. NOTE: The start-in-gear protection device prevents the engine from starting except when in neu-...

  • Page 37: Warming Up Engine

    Place the throttle grip in the fully closed the lower case or the cooling water pilot position. hole is blocked. Consult your Yamaha dealer if the problem cannot be located and corrected. Move the gear shift lever quickly and...

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

    Operation firmly from neutral to forward. Move the gear shift lever quickly and firmly from neutral to reverse. Remote control models Pull up the neutral interlock trigger (if equipped) and move the remote control lever quickly and firmly from neutral to forward.

  • Page 39: Procedure

    Operation ping the engine immediately after operating at high speed is not recommended. EMU27844 Procedure Push and hold the engine stop button or turn the main switch to “ ” (off). ZMU03870 Tighten the air vent screw on the fuel tank cap (if equipped).

  • Page 40: Adjusting Trim Angle

    Operation the boat, sea conditions, and running speed. clamp bracket. Use caution when trying a trim position EWM00740 WARNING for the first time. Increase speed gradu- Excessive trim for the operating condi- ally and watch for any signs of instabil- tions (either trim up or trim down) can ity or control problems.

  • Page 41: Adjusting Boat Trim

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

  • Page 42: 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 43 Operation ZMU03873 Push the tilt support knob into the clamp Press the power trim and tilt switch / bracket or pull the tilt support lever to- power tilt switch “ ” (up) until the out- ward you to support the engine. board motor has tilted up completely.

  • Page 44: Procedure For Tilting Down

    Operation from marine growth and corrosion which could damage the power trim and tilt mechanism. ZMU01936 ZMU03874 EMU28053 Procedure for tilting down Power trim and tilt models / power tilt models Push the power tilt / power trim and tilt switch “...

  • Page 45: Cruising In Other Conditions

    Operation to allow operation in shallow water. desired position using the power trim / tilt switch. EWM00660 WARNING Place the gear shift in neutral before setting up for shallow water cruising. Return the outboard motor to its normal position as soon as the boat is back in deeper water.
  • Page 46 NOTE: For cooling system flushing instructions, see page 43. 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 47: Maintenance

    82.0 × 72.0 mm (3.23 × 2.83 in) Oil injection Ignition system: Engine oil tank capacity: CDI (micro computer) 3.3 L (3.49 US qt) (2.90 Imp.qt) Spark plug (NGK): Recommended gear oil: B8HS-10 Hypoid gear oil SAE#90 Spark plug gap: Gear oil quantity: 0.9–1.0 mm (0.035–0.039 in)

  • Page 48: Transporting And Storing Outboard Motor

    Maintenance 25.0 Nm (18.4 ft-lb) (2.55 kgf-m) a transom saver bar. Consult your Yamaha Propeller nut: dealer for further details. 35.0 Nm (25.8 ft-lb) (3.57 kgf-m) EMU30272 Storing outboard motor EMU28222 Transporting and storing When storing your Yamaha outboard motor...

  • Page 49: Lubrication (Oil Injection Models)

    Just prior to turning off the engine, quick- gine will be damaged from overheating. ly spray “Yamaha Stor-Rite Engine Fog- Before starting the engine, be sure to ging Oil” (Part No. LUB-STRRT-12-00)

  • Page 50: Cleaning And Anticorrosion Measures

    Consult your battery Wax the cowling with a non-abrasive manufacturer’s instructions. wax such as “Yamaha Silicone Wax” Procedure (Part No. ACC-11000-15-02). Disconnect and remove the battery from EMU28430 the boat. Always disconnect the black Battery care negative cable first to prevent the risk of...

  • Page 51: 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 52: Periodic Maintenance

    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. Maintenance, replacement, or repair of the emission control devices and sys- tems may be performed by any marine engine repair establishment or individual.

  • Page 53: 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 54: Greasing

    / throttle pick-up Inspection / adjustment timing Inspection / replace- Water pump ment Oil pump Inspection / adjustment Oil tank water drain Inspection / cleaning Cleaning / adjustment / Spark plug(s) replacement EMU28931 Greasing Yamaha marine grease (Water resistant grease) ZMU03879...

  • Page 55: Cleaning And Adjusting Spark Plug

    Wipe off Instead, take the outboard motor to a any dirt from the threads and screw in the Yamaha dealer. You should periodically re- spark plug to the correct torque. move and inspect the spark plug because...

  • Page 56: Inspecting Fuel Filter

    Check the fuel lines for leaks, crack, or mal- There will be fuel in the fuel filter. Keep function. If a problem is found, your Yamaha away from sparks, cigarettes, flames or dealer or other qualified mechanic should re- other sources of ignition.

  • Page 57: Inspecting Idling Speed

    A necessary. If any water is found in the flushing attachment or test tank can be fuel, the Yamaha portable fuel tank or used. other fuel tanks should be checked and A diagnostic tachometer should be used for cleaned.

  • Page 58: Checking Wiring And Connectors

    Maintenance EMU29153 Checking power trim and tilt system EWM00430 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. Make sure no one is under the outboard motor before performing this test.

  • Page 59: Checking Propeller

    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. EMU29171 Checking propeller ZMU01897 EWM00321...

  • Page 60: Removing The Propeller

    EMU29194 Spline models eration and be lost. Straighten the cotter pin and pull it out Apply Yamaha marine grease or a cor- using a pair of pliers. rosion resistant grease to the propeller Remove the propeller nut, washer, and shaft.

  • Page 61: Changing Gear Oil

    Never get under the lower unit while it NOTE: is tilted, even when the tilt support lever For disposal of used oil consult your Yamaha or knob is locked. Severe injury could dealer. occur if the outboard motor accidental- ly falls.

  • Page 62: Cleaning Fuel Tank

    Allow the filter to dry. Replace the gasket with a new one. Re- install the fuel joint assembly and tighten the screws firmly. EMU29312 Inspecting and replacing anode(s) Yamaha outboard motors are protected from...

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

    EMU29320 Checking battery (for electric start external anodes periodically. Remove scales models) from the surfaces of the anodes. Consult a EWM00330 Yamaha dealer for replacement of external WARNING anodes. Battery electrolytic fluid is dangerous; it ECM00720 CAUTION: contains sulfuric acid and therefore is poisonous and highly caustic.

  • Page 64: Connecting The Battery

    NOTE: Consult a Yamaha dealer when charging or 1. Red cable re-charging batteries. 2. Black cable 3.

  • Page 65: Checking Top Cowling

    EMU29390 Checking top cowling Check the fitting of the top cowling by push- ing it with both hands. If it is loose have it re- paired by your Yamaha dealer. ZMU04678 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.

  • 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

    EWM00630 Q. Is steering pivot loose or damaged? WARNING A. Tighten or have serviced by a Yamaha Be sure to use the specified fuse. An in- dealer. correct fuse or a piece of wire could allow EMU29432 excessive current flow.

  • Page 70: Power Trim And Tilt / Power Tilt Will Not Operate

    NOTE: ate. Make sure the remote control lever Consult your Yamaha dealer if the new fuse is in neutral. Otherwise the boat could immediately blows again. unexpectedly start to move, which EMU29511 could result in an accident.

  • Page 71: Emergency Starting Engine

    Trouble Recovery engine is running. Do not install the starter mechanism or top cowling after the engine is running. Do not touch the ignition coil, spark plug wire, spark plug cap, or other elec- trical components when starting or op- erating the motor.

  • Page 72: Engine Fails To Operate

    Trouble Recovery ZMU03892 ZMU03893 NOTE: 1. CDI unit When the engine does not start with this pro- 2. Yellow cord cedure, see page 67. EMU29704 Cold engine fails to start EMU29670 Engine fails to operate If the engine fails to start when it is cold, use EMU29691 the following procedure.
  • Page 73 Trouble Recovery ON START OPEN CLOSE ZMU03144 ZMU03894 Squeeze the primer pump two or three Turn the main switch to “ ” (start). times to feed fuel. ECM00191 CAUTION: Never turn the main switch to “ ” (start) while the engine is running. Do not keep the starter motor turning for more than 5 seconds.

  • Page 74: Treatment Of Submerged Motor

    Treatment of submerged motor emergency starter rope. 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...

  • Page 75: Consumer Information

    Consumer information EMU29811 Important warranty information for U.S.A. and Canada...
  • Page 76 Consumer information...

  • Page 77: Yamaha Motor Corporation, U.s.a. Outboard Motor Two Year Limited Warranty

    Consumer information EMU29820 YAMAHA MOTOR CORPORATION, U.S.A. OUTBOARD MOTOR TWO YEAR LIMITED WARRANTY...
  • Page 78 Consumer information...
  • Page 79 Consumer information...

  • Page 80: 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 81 Printed in Japan May 2005–0.9 × 1 ! Printed on raecycled paper...
  • Page 82 (A l’usage du concessionnaire) MODÉLE ET NO. DE SÉRIE DU MOTEUR HORS-BORD (sur l’étiquette d’identification de la presse de fixation) YAMAHA DEALER NUMBER NO. DU CONCESSIONNAIRE YAMAHA DEALER NAME YAMAHA MOTOR CO., LTD. NOM DU MADE IN JAPAN CONCESSIONNAIRE PAYS D'ORIGINE JAPON USAGE...
  • Page 83 PLACE POSTAGE HERE ATTN: WARRANTY DEPARTMENT...

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