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Yamaha 6c Owner's Manual
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Yamaha 6c Owner's Manual

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OWNER'S MANUAL
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Read this manual carefully before operating this
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outboard motor.
6C
8C
6M8-F8199-2C-E0

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Summary of Contents for Yamaha 6c

  • Page 1 OWNER’S MANUAL Read this manual carefully before operating this outboard motor. 6M8-F8199-2C-E0...
  • Page 2 EMU25052 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

    Any damage tain maximum enjoyment from your new resulting from neglect of these instructions is Yamaha. If you have any question about the not covered by warranty. 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 Safety information......1 Emission control information..12 U.S. insular areas......12 Outboard motor safety ....1 Components ........14 Propeller..........1 Rotating parts........1 Components diagram....14 Hot parts ........... 1 Fuel tank ......... 14 Electric shock ........1 Fuel joint..........
  • Page 5 Table of contents Operating engine......27 Checking fuel filter......47 Feeding fuel (portable tank) .... 27 Inspecting idling speed....47 Starting engine ........ 28 Checking wiring and connectors ..48 Checks after starting engine ..30 Checking propeller ......48 Cooling water ........

  • Page 6: 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 EMU36500 people stranded, or running over people or Propeller objects.

  • Page 7: 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 8: Weather

    Safety information Operate defensively at safe speeds and keep a safe distance away from people, ob- jects, and other boats. Do not follow directly behind other boats or ● waterskiers. Avoid sharp turns or other maneuvers that ● make it hard for others to avoid you or un- derstand where you are going.

  • Page 9: General Information

    EMU25203 the spaces provided to assist you in ordering CE Marking spare parts from your Yamaha dealer or for Outboard motors affixed with this “CE”mark- reference in case your outboard motor is sto- ing conform with the directives of; 98/37/EC, len.
  • Page 10 General information ZMU02838 1. C-Tick label location ZMU01697...

  • Page 11: 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. ZMU06306...
  • Page 12 General information ZMU05697 EMU33912 Contents of labels EWM01671 The above warning labels mean as follows. WARNING Read Owner’s Manuals and labels. ● EWM01691 Wear an approved personal flotation ● WARNING device (PFD). Emergency starting does not have start- Attach engine shut-off cord (lanyard) to ●...
  • Page 13 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 14: Specifications And Requirements

    Specifications and requirements EMU31480 2-stroke L Specifications Displacement: TIP: 165.0 cm Bore × stroke: “(AL)” stated in the specification data below 50.0 × 42.0 mm (1.97 × 1.65 in) represents the numerical value for the alumi- Ignition system: num propeller installed. Likewise, “(SUS)”...

  • Page 15: Installation Requirements

    Boat horsepower rating appropriate. EWM01560 Your Yamaha dealer can help you select the WARNING right propeller for your boating needs. Select Overpowering a boat can cause severe a propeller that will allow the engine to reach instability.

  • Page 16: Start-In-Gear Protection

    EMU25651 Engine oil requirements Yamaha does not recommend gasohol con- taining methanol because it can cause fuel Recommended engine oil: system damage or engine performance YAMALUBE 2-stroke outboard motor problems.

  • Page 17: Motor Disposal Requirements

    This label is attached to the clamp bracket or Spare parts, such as an extra set of spark ● the swivel bracket. plugs. Consult your Yamaha dealer for details. EMU25221 Emission control information EMU25310 U.S. insular areas Engines affixed with the label pictured below...
  • Page 18 Specifications and requirements ZMU02838 1. Manufactured date label location Manufactured: ZMU04346...

  • Page 19: Components

    EMU2579J Components diagram TIP: * May not be exactly as shown; also may not be included as standard equipment on all mod- els. 6C, 8C ZMU02845 1. Manual starter handle 16. Fuel tank 2. Engine stop button/Engine shut-off switch 17. Clip 3.

  • Page 20: Fuel Joint

    Components tions. ZMU02846 ZMU02284 EMU25922 Gear shift lever 1. Fuel joint Pulling the gear shift lever towards you puts 2. Fuel gauge the engine in forward gear so that the boat 3. Fuel tank cap moves ahead. Pushing the lever away from 4.

  • Page 21: Throttle Indicator

    Components or throttle grip, which could result in an accident. [EWM00032] ZMU02848 EMU25961 ZMU02850 Throttle indicator The fuel consumption curve on the throttle When constant speed is desired, tighten the indicator shows the relative amount of fuel adjuster to maintain the desired throttle set- consumed for each throttle position.

  • Page 22: Engine Stop Button

    Components EMU26070 Manual starter handle To start the engine, first gently pull the han- dle out until resistance is felt. From that posi- tion, then pull the handle straight out quickly to crank the engine. ZMU02851 1. Clip 2. Cord 3.

  • Page 23: Trim Rod (Tilt Pin)

    Components ZMU04508 ZMU02854 To increase resistance, turn the adjuster EMU26321 Tilt support knob clockwise. To keep the outboard motor in the tilted up To decrease resistance, turn the adjuster position, push the tilt support knob under the counterclockwise. swivel bracket. EWM00040 WARNING Do not overtighten the friction adjuster.
  • Page 24 Components lock position. ZMU02862 1. Top cowling lock lever(s)

  • Page 25: Installation

    Installation EMU26902 Installation The information presented in this section is intended as reference only. It is not possible to provide complete instructions for every possible boat and motor combination. Prop- er mounting depends in part on experience and the specific boat and motor combination. EWM01590 WARNING ZMU01760...

  • Page 26: Clamping The Outboard Motor

    Other- Test runs at different heights can help de- wise the engine could be completely lost termine the optimum mounting height. if it accidentally falls off the transom. Consult your Yamaha dealer or boat man-...
  • Page 27 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 28: Operation

    Operation EMU36380 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 29: Fuel Level

    Operation EMU37141 the outboard unsafe to operate. Fuel level EMU36450 Be sure you have plenty of fuel for your trip. Check for fuel leaks A good rule is to use 1/3 of your fuel to get to Check under top cowling and in the boat ●...

  • Page 30: Engine

    Remove the portable tank from the boat. top cowling is loose, have it repaired by your Be sure you are in a well-ventilated out- Yamaha dealer. door area, either securely moored or trailered. Do not smoke and keep away from sparks, flames, static electric discharge, or other sources of ignition.

  • Page 31: Gasoline And Oil Mixing (100:1)

    Operation Touch the fuel nozzle to the filler open- Gasoline to engine ing or funnel to help prevent electrostatic oil ratio sparks. Break-in period See page 23 Fill the fuel tank, but do not overfill. Fuel After break-in 100:1 can expand and overflow if the tempera- ture increases.

  • Page 32: Operating Engine

    Operation the oil gradually as the gasoline is being add- ed to the tank. EMU27451 Operating engine EMU27464 Feeding fuel (portable tank) 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.

  • Page 33: Starting Engine

    Operation connect the fuel line to the joint. Then EMU27492 Starting engine firmly connect the other end of the fuel EWM01600 line to the joint on the fuel tank. WARNING Before starting the engine, make sure that the boat is tightly moored and that you can steer clear of any obstructions.
  • Page 34 Operation TIP: The start-in-gear protection device prevents the engine from starting except when in neu- tral. Attach the engine shut-off cord to a se- cure place on your clothing, or your arm or leg. Then install the clip on the other end of the cord into the engine shut-off switch.

  • Page 35: Checks After Starting Engine

    Operation blocked. Consult your Yamaha dealer if the problem cannot be located and cor- rected. ZMU02030 TIP: When the engine is cold, it needs to be ● ZMU02856 warmed up. For further information, see page 30. Check that no water leaks from the joints be- If the engine does not start on the first try, ●...

  • Page 36: Shifting

    Operation shut-off switch. EMU34550 Shifting EWM00180 WARNING Before shifting, make sure there are no swimmers or obstacles in the water near you. ECM01610 ZMU02030 NOTICE After the engine is at idle speed in gear Warm up the engine before shifting into move the gear shift lever firmly and gear.

  • Page 37: Stopping Engine

    Operation The stopping distance varies depending on gross weight, water surface conditions, and wind direction. EMU27821 Stopping engine Before stopping the engine, first let it cool off for a few minutes at idle or low speed. Stop- ping the engine immediately after operating at high speed is not recommended.

  • Page 38: Adjusting Trim Angle For Manual Tilt Models

    Operation ZMU02859 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 39: 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 40: Procedure For Tilting Up (Manual Tilt Models)

    Operation Otherwise fuel may leak. ECM00231 NOTICE Before tilting the outboard motor, fol- ● low the procedure under “Stopping en- gine” in this chapter. Never tilt the outboard motor while the engine is run- ning. Severe damage from overheating can result. ZMU02854 Do not tilt up the engine by pushing the ●...

  • Page 41: Shallow Water

    Operation ZMU02868 ZMU02888 Slowly tilt the engine down. EMU28110 Procedure EMU28061 Shallow water Place the gear shift lever in neutral. EMU28073 Cruising in shallow water (manual tilt models) EWM01781 WARNING Run the boat at the lowest possible ● speed when using the shallow water cruising system.

  • Page 42: 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 11) 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 43: 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 44: Procedure

    Maintenance lowing procedures. ECM01411 NOTICE Do not place the outboard motor on its ● side before the cooling water has drained from it completely, otherwise water may enter the cylinder through the exhaust port and cause engine trou- ble. ZMU02051 Store the outboard motor in a dry, well- ●...
  • Page 45 Maintenance stops. 11. Drain the cooling water completely out of the motor. Clean the body thoroughly. 12. If the “Fogging Oil” is not available, re- move the spark plug(s). Pour a tea- spoonful of clean engine oil into each cylinder. Crank several times manually. Replace the spark plug(s).

  • Page 46: Lubrication

    A touch-up paint is avail- Seal replacement should be performed able from your Yamaha dealer. by an authorized Yamaha dealer prior to EMU2850A Periodic maintenance use. Grease all grease fittings. For further de-...

  • Page 47: Replacement Parts

    Yamaha marine dealership. 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 passengers.

  • Page 48: 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 49 Inspection or replace- Thermostat ment as necessary Water inlet Inspection 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 50: Maintenance Chart 2

    Maintenance EMU34451 Maintenance chart 2 Every Item Actions 1000 hours Guide exhaust/exhaust Inspection or replace- manifold ment as necessary...

  • Page 51: Greasing

    Maintenance EMU28941 Greasing Yamaha grease A (water resistant grease) Yamaha grease D (corrosion resistant grease; for propeller shaft) 6C, 8C ZMU02872 EMU28955 carburetion problem in that cylinder. Do not Cleaning and adjusting spark plug attempt to diagnose any problems yourself.

  • Page 52: Checking Fuel Filter

    For re- otherwise the engine may not operate placement of the fuel filter, consult your properly. Before fitting the spark plug, Yamaha dealer. measure the electrode gap with a wire thickness gauge; adjust the gap to spec- ification if necessary.

  • Page 53: Checking Wiring And Connectors

    Turn off the battery cut-off switch if quires adjustment, consult a Yamaha dealer your boat has one. or other qualified mechanic. Verify whether the idle speed is set to Do not use your hand to hold the propeller specification.

  • Page 54: Removing Propeller

    Be sure to use a new cotter pin and bend the ends over securely. Otherwise the propeller could come off during opera- tion and be lost. Apply Yamaha marine grease or a cor- Check the propeller shaft oil seal for dam- ● rosion resistant grease to the propeller age.

  • Page 55: Changing Gear Oil

    Consult a or knob is locked. Severe injury could Yamaha dealer for repair of the lower occur if the outboard motor accidental- unit seals. [ECM00711] ly falls.

  • Page 56: Cleaning Fuel Tank

    EMU29312 If you have any question about properly ● Inspecting and replacing anode(s) doing this procedure, consult your Yamaha outboard motors are protected from Yamaha dealer. corrosion by sacrificial anodes. Inspect the Keep away from sparks, cigarettes, ● external anodes periodically. Remove scales flames, or other sources of ignition from the surfaces of the anodes.
  • Page 57 Maintenance them ineffective. TIP: Inspect ground leads attached to external anodes on equipped models. Consult a Yamaha dealer for inspection and replace- ment of internal anodes attached to the pow- er unit. ZMU02881...

  • Page 58: 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 59 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 60 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 61: Temporary Action In Emergency

    A. Tighten bolt. er), the engine can be started with an emer- gency starter rope. Q. Is steering pivot loose or damaged? EWM01022 A. Tighten or have serviced by a Yamaha WARNING dealer. Use this procedure only in an emergen- ●...

  • Page 62: Emergency Starting Engine

    Trouble Recovery could result in an accident. Attach the engine shut-off cord to a se- ● cure place on your clothing, or your arm or leg while operating the boat. Do not attach the cord to clothing that ● could tear loose. Do not route the cord where it could become entangled, pre- venting it from functioning.

  • Page 63: 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 64 YAMAHA MOTOR CO., LTD. Printed in France April 2008–0.5 × 1 !

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