Yamaha 6C Owner's Manual
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Yamaha 6C Owner's Manual

Yamaha 6C Owner's Manual

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OWNER'S MANUAL
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q
Read this manual carefully before operating this
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outboard motor.
6C
8C
6M8-F8199-2D-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-F8199-2D-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 Starting engine ........ 28 Checking wiring and connectors ..48 Checks after starting engine ..30 Checking propeller ......48 Cooling water ........30 Removing propeller ......49 Warming up engine ....... 30 Installing propeller ......49 Choke start models ......

  • 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 EMU36501 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. 6C, 8C 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 in-gear protection.
  • 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

    EMU2579M 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 lever(s) to the lock position. ZMU02862 1. 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

    Consult your Yamaha dealer or boat man- ufacturer for further information on deter- mining the proper mounting height. For instructions on setting the trim angle of...
  • Page 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 EMU36381 plane, then immediately reduce the First-time operation throttle to 3000 r/min or less. EMU30174 Next two hours: Breaking in engine Accelerate at full throttle onto plane, Your new engine requires a period of break- then reduce engine speed to three-quar- in to allow mating surfaces of moving parts to ter throttle (approximately 4000 r/min).

  • Page 29: Remove Cowling

    Operation EMU36570 EMU36891 Remove cowling Controls For the following checks, remove the top Move the tiller handle fully to the left and cowling from the engine. To remove the en- right to make sure operation is smooth. gine top cowling, release the lock lever and Turn the throttle grip from the fully closed lift off the cowling.

  • Page 30: Filling Fuel And Engine Oil

    After installing, check the fitting of the top tank and tighten the air vent screw on cowling by pushing it with both hands. If the the fuel tank cap. top cowling is loose, have it repaired by your Yamaha dealer. ZMU06621...

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

    Operation 10. Wipe up any spilled gasoline immediate- ly with dry rags. Dispose rags properly according to local laws or regulations. EMU27406 Gasoline and oil mixing (100:1) ECM00811 NOTICE Avoid using any oil other than the spec- ified type. ZMU02301 Use a thoroughly blended fuel-oil mix- ture.

  • Page 32: Operating Engine

    Operation the oil gradually as the gasoline is being add- ed to the tank. EMU27451 Operating engine EMU27466 Sending 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 firmly connect the other end of the fuel line to the joint on the fuel tank. 1. Arrow EMU27493 Starting engine EWM01600 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 Place the gear shift lever in neutral. Pull out / turn the choke knob fully. After the engine starts, replace / return the TIP: knob to the home position. The start-in-gear protection device prevents the engine from starting except when in neu- tral.

  • Page 35: Checks After Starting Engine

    Stop the engine and check wheth- er the cooling water inlet on the lower case or the cooling water pilot hole is blocked. Consult your Yamaha dealer if the problem cannot be located and cor- rected. ZMU02030...

  • Page 36: Checks After Engine Warm-Up

    Operation shorten engine life. Gradually return the down position (if equipped) before oper- choke knob to its home position as the en- ating in reverse. gine warms up. EMU36530 Checks after engine warm-up EMU36540 Shifting While tightly moored, and without applying throttle, confirm that the engine shifts smoothly into forward and reverse, and back to neutral.

  • Page 37: Stopping Boat

    Operation 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 im- pact the steering wheel or other parts of the boat. This could increase the risk of serious injury.

  • Page 38: Trimming Outboard Motor

    Operation EMU27862 Trimming outboard motor EWM00740 WARNING Excessive trim for the operating condi- tions (either trim up or trim down) can cause boat instability and can make steering the boat more difficult. This in- creases the possibility of an accident. If the boat begins to feel unstable or is hard to steer, slow down and/or readjust the trim angle.

  • Page 39: Adjusting Boat Trim

    Operation bow up, the boat may have a greater tenden- cy to steer to one side or the other. Compen- sate for this as you steer. When the bow of the boat is down, it is easier to accelerate from a standing start onto plane. ZMU02859 1.

  • Page 40: Tilting Up And Down

    Operation the bow is greatly increased, heightening the few minutes. Otherwise fuel may leak. danger of “bow steering” and making opera- ECM00241 tion difficult and dangerous. NOTICE Before tilting the outboard motor, stop the engine by following the procedure on page 32. Never tilt the outboard mo- tor while the engine is running.

  • Page 41: Procedure For Tilting Down (Manual Tilt Models)

    Operation equipped). ZMU02888 ZMU02854 Slowly tilt the engine down. EMU28061 Hold the rear of the top cowling with one Shallow water hand and tilt the engine up fully. EMU28073 Push the tilt support knob into the clamp Cruising in shallow water (manual tilt bracket.

  • Page 42: Cruising In Other Conditions

    ZMU02868 Cruising in muddy, turbid, or acidic water Yamaha strongly recommends that you use EMU28110 the optional chromium-plated water pump kit Procedure (see page 11) if you use the outboard motor Place the gear shift lever in neutral.

  • 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- ventilated place, not in direct sunlight.
  • 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

    EWM01981 Seal replacement should be performed WARNING by an authorized Yamaha dealer prior to These procedures require mechanical use. skills, tools, and supplies. If you do not Grease all grease fittings. For further de- have the proper skills, tools, or supplies tails, see page 46.

  • 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 Exhaust guide/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 EMU28956 carburetion problem in that cylinder. Do not Cleaning and adjusting spark plug attempt to diagnose any problems yourself.

  • Page 52: Checking Fuel Filter

    Be sure to use the specified spark plug, placement of the fuel filter, consult your otherwise the engine may not operate Yamaha dealer. properly. Before fitting the spark plug, measure the electrode gap with a wire thickness gauge; replace it if out of spec- ification.

  • Page 53: Checking Wiring And Connectors

    For idle speed specifications, see page 9. If you have difficulty verify- ing the idle speed, or the idle speed re- quires adjustment, consult a Yamaha dealer or other qualified mechanic. EMU29113 Checking wiring and connectors...

  • Page 54: Removing Propeller

    Otherwise the EMU29287 propeller could come off during opera- Changing gear oil tion and be lost. EWM00800 WARNING Apply Yamaha marine grease or a cor- Be sure the outboard motor is securely...
  • Page 55 Never get under the lower unit while it which can cause gear damage. Con- is tilted, even when the tilt support lever sult a Yamaha dealer for repair of the or knob is locked. Severe injury could lower unit seals.

  • Page 56: Cleaning Fuel Tank

    Remove the fuel tank from the boat be- EMU29312 Inspecting and replacing anode(s) fore cleaning it. Work only outdoors in Yamaha outboard motors are protected from an area with good ventilation. corrosion by sacrificial anodes. Inspect the Wipe up any spilled fuel immediately.
  • Page 57 Maintenance 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- EMU29433...

  • 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 2009–PDF × 1 !

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