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- Yamaha
- Outboard Motor
- 6c
- Owner's Manual
Yamaha 6c Owner's Manual
Summary of 6c
Page 1
6c 8c 6m8-f8199-2f owner’s manual q read this manual carefully before operating this outboard motor. U6m82fmc.Indd 1 2011/03/04 15:46:35.
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. U6m82fmc.Indd 2 2011/03/04 15:46:36.
Page 3: Important Manual Information
Important manual information emu25107 to the owner thank you for selecting a yamaha outboard motor. This owner’s manual contains infor- mation needed for proper operation, mainte- nance and care. A thorough understanding of these simple instructions will help you ob- tain maximum enjoyment from your...
Page 4: Table of Contents
Table of contents safety information............................. 1 outboard motor safety ..................... 1 propeller............................................ 1 rotating parts.................................... 1 hot parts ........................................... 1 electric shock..........
Page 5: Table of Contents
Table of contents warming up engine ........................ 28 choke start models ......................... 28 checks after engine warm up ........ 29 shifting ............................................ 29 stop switches.................................. 29 shifting ..................................
Page 6: Safety Information
1 safety information emu33622 outboard motor safety observe these precautions at all times. Emu36501 propeller people can be injured or killed if they come in contact with the propeller. The propeller can keep moving even when the motor is in neutral, and sharp edges of the propeller can cut even wh...
Page 7: Safety Information
Safety information 2 when inhaled. Symptoms include nausea, dizziness, and drowsiness. Keep cockpit and cabin areas well ventilated. Avoid blocking exhaust outlets. Emu33780 modifications do not attempt to modify this outboard mo- tor. Modifications to your outboard motor may reduce safety and relia...
Page 8: Safety Information
Safety information 3 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. Avoid areas with submerged objects or ...
Page 9: General Information
4 general information emu25171 identification numbers record emu25184 outboard motor serial number the outboard motor serial number is stamped on the label attached to the port side of the clamp bracket. Record your outboard motor serial number in the spaces provided to assist you in ordering spare ...
Page 10: General Information
General information 5 emu33523 read manuals and labels before operating or working on this outboard motor: read this manual. 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. Emu33832 warni...
Page 11: General Information
General information 6 emu33912 contents of labels the above warning labels mean as follows. 1 warning ewm01691 emergency starting does not have start- in-gear protection. Ensure shift control is in neutral before starting engine. 2 warning ewm01681 keep hands, hair, and clothing away from rotating p...
Page 12: General Information
General information 7 emu35132 symbols the following symbols mean as follows. Notice/warning read owner’s manual hazard caused by continuous rotation electrical hazard zmu05696 zmu05664 zmu05665 zmu05666 u6m82fe0mt.Fm 7 ページ ２０１１年３月４日 金曜日 午後３時５１分.
Page 13: Specifications
8 specifications and requirements emu31480 specifications tip: “(al)” stated in the specification data below represents the numerical value for the alumi- num propeller installed. Likewise, “(sus)” represents the value for stainless steel propeller installed and “(pl)” for plastic propeller installe...
Page 14: Installation Requirements
Specifications and requirements 9 lubrication: pre-mixed fuel and oil recommended gear oil: hypoid gear oil sae#90 gear oil quantity: 0.160 l (0.169 us qt, 0.141 imp.Qt) tightening torque for engine: spark plug: 25.0 nm (2.55 kgf-m, 18.4 ft-lb) propeller nut: 17.0 nm (1.73 kgf-m, 12.5 ft-lb) emu3355...
Page 15: Start-In-Gear Protection
Specifications and requirements 10 emu25770 start-in-gear protection yamaha outboard motors or yamaha-ap- proved 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. Always select neutral before starting ...
Page 16: Muddy Or Acidic Water
Specifications and requirements 11 engine starting and running problems. Yamaha does not recommend gasohol con- taining methanol because it can cause fuel system damage or engine performance problems. Emu36880 muddy or acidic water yamaha strongly recommends that you have your dealer install the opt...
Page 17: Components
12 components emu2579y components diagram tip: * may not be exactly as shown; also may not be included as standard equipment on all mod- els (order from dealer). 6c, 8c emu25802 fuel tank if your model was equipped with a portable fuel tank, its function is as follows. Warning ewm00020 the fuel tank...
Page 18: Components
Components 13 mercial users should conform to relevant licensing or approval authority regula- tions. Emu25830 fuel joint this joint is used to connect the fuel line. Emu25841 fuel gauge this gauge is located on either the fuel tank cap or on the fuel joint base. It shows the ap- proximate amount of...
Page 19: Components
Components 14 emu25962 throttle indicator the fuel consumption curve on the throttle indicator shows the relative amount of fuel consumed for each throttle position. Choose the setting that offers the best performance and fuel economy for the desired operation. Emu25976 throttle friction adjuster a ...
Page 20: Components
Components 15 emu26003 engine stop button the engine stop button stops the engine when the button is pushed. Emu26013 choke knob for pull type to supply the engine with the rich fuel mix- ture required to start, pull out this knob. Emu26074 manual starter handle the manual starter handle is used to ...
Page 21: Components
Components 16 to increase resistance, turn the adjuster clockwise. To decrease resistance, turn the adjuster counterclockwise. Warning ewm00040 do not overtighten the friction adjuster. If there is too much resistance, it could be difficult to steer, which could result in an accident. Emu26262 trim ...
Page 22: Components
Components 17 notice ecm00660 do not use the tilt support lever or knob when trailering the boat. The outboard motor could shake loose from the tilt sup- port and fall. If the motor cannot be trail- ered in the normal running position, use an additional support device to secure it in the tilt positi...
Page 23: Installation
18 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. Proper mounting depends in part on experience and the specific boat and motor combination....
Page 24: Installation
Installation 19 notice ecm01634 make sure that the idle hole is high enough to prevent water from entering the engine even if the boat is stationary with the maximum load. Incorrect engine height or obstructions to the smooth flow of water (such as the design or condition of the boat, or ac- cessori...
Page 25: Installation
Installation 20 packaging. If used, they must be of at least the same quality of material and strength and must be tightened se- curely. After tightening, test run the engine and check their tightness. [ewm00651] 1. Bolts zmu02637 1 u6m82fe0mt.Fm 20 ページ ２０１１年３月４日 金曜日 午後３時５１分.
Page 26: Operation
21 operation emu36381 first-time operation emu30174 breaking in engine your new engine requires a period of break- in to allow mating surfaces of moving parts to wear in evenly. Correct break-in will help en- sure proper performance and longer engine life. Notice: failure to follow the break-in proc...
Page 27: Operation
Operation 22 emu37141 fuel level be sure you have plenty of fuel for your trip. A good rule is to use 1/3 of your fuel to get to the destination, 1/3 to return, and to keep 1/3 as an emergency reserve. With the boat lev- el on a trailer or in the water, check the fuel level. For fuel filling instruc...
Page 28: Operation
Operation 23 emu27141 engine check the engine and engine mounting. Look for loose or damaged fasteners. Check the propeller for damage. Emu36954 install top cowling 1. Be sure that the cowling lock lever is re- leased. 2. Be sure that the rubber seal is seated all the way around the top cowling. 3. ...
Page 29: Operation
Operation 24 3. Remove the portable tank from the boat. 4. Be sure you are in a well-ventilated out- door area, either securely moored or trailered. 5. Do not smoke and keep away from sparks, flames, static electric discharge, or other sources of ignition. 6. If you use a portable container to store...
Page 30: Operation
Operation 25 if equipped with a portable fuel tank 1. Pour oil into the portable fuel tank, and then add gasoline. 2. Replace the fuel tank cap and close tightly. 3. Shake the fuel tank to mix the fuel thor- oughly. 4. Make sure that the oil and gasoline are mixed. If equipped with a built-in fuel t...
Page 31: Operation
Operation 26 in areas well ventilated. Avoid blocking exhaust outlets. Emu27468 sending fuel (portable tank) 1. If there is an air vent screw on the fuel tank cap, loosen it 2 or 3 turns. 2. If there is a fuel joint on the motor, align the fuel joint on the fuel line with the fuel joint on the motor...
Page 32: Operation
Operation 27 emu27508 manual start models (tiller control) warning ewm01840 failure to attached engine shut-off cord could result in a runaway boat if opera- tor is ejected. Attach the engine shut- off cord to a secure place on your cloth- ing, or your arm or leg while operating. Do not attach the c...
Page 33: Operation
Operation 28 5. Pull the manual starter handle slowly un- til you feel resistance. Then give a strong pull straight out to crank and start the engine. Repeat if necessary. 6. After the engine starts, slowly return the manual starter handle to its original posi- tion before releasing it. 7. Slowly re...
Page 34: Operation
Operation 29 emu36531 checks after engine warm up emu36541 shifting while the boat is tightly moored, and without applying throttle, confirm that the engine shifts smoothly into forward and reverse, and back to neutral. Emu36971 stop switches perform the following procedure to check that the engine ...
Page 35: Operation
Operation 30 emu31742 stopping boat warning ewm01510 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. It could also damage the sh...
Page 36: Operation
Operation 31 emu27862 trimming outboard motor warning ewm00740 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...
Page 37: Operation
Operation 32 3. 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 your boat and oper...
Page 38: Operation
Operation 33 the bow is greatly increased, heightening the danger of “bow steering” and making opera- tion difficult and dangerous. Tip: depending on the type of boat, the outboard motor trim angle may have little effect on the trim of the boat when operating. Emu27935 tilting up and down if the eng...
Page 39: Operation
Operation 34 5. Hold the rear of the top cowling with one hand and tilt the engine up fully. 6. Push the tilt support knob into the clamp bracket. Or the tilt support bar will turn to the lock position automatically. Notice: do not use the tilt support lever or knob when trailering the boat. The out...
Page 40: Operation
Operation 35 emu28110 procedure 1. Place the gear shift lever in neutral. 2. Slightly tilt the outboard motor up. Pull up the shallow water lever. 3. The shallow water lever will lock, sup- porting the outboard motor in a partially raised position. 4. When lowering the outboard motor, slightly tilt ...
Page 41: Maintenance
36 maintenance emu2822a transporting and storing outboard motor warning ewm02620 use care when transporting fuel tank, whether in a boat or car. Do not fill fuel container to maximum capacity. Gasoline will expand consid- erably as it warms up and can build up pressure in the fuel container. This ca...
Page 42: Maintenance
Maintenance 37 tip: place a towel or something similar under the outboard motor to protect it from damage. Emu30272 storing outboard motor when storing your yamaha outboard motor for prolonged periods of time (2 months or longer), several important procedures must be performed to prevent excessive d...
Page 43: Maintenance
Maintenance 38 properly done, the engine will smoke ex- cessively and almost stall. 8. Remove the outboard motor from the test tank. 9. Install the silencer cover/cap of fogging hole and top cowling. 10. If the “fogging oil” is not available, run the engine at a fast idle until the fuel sys- tem bec...
Page 44: Maintenance
Maintenance 39 dling hot parts or fluids. Always completely reassemble the mo- tor before operation. 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...
Page 45: Maintenance
Maintenance 40 emu34446 maintenance chart 1 tip: refer to the sections in this chapter for explanations of each owner-specific action. The maintenance cycle on these charts assume usage of 100 hours per year and regular flushing of the cooling water passages. Maintenance frequency should be adjusted...
Page 46: Maintenance
Maintenance 41 emu34451 maintenance chart 2 gear oil replacement greasing points greasing impeller/water pump housing inspection or replace- ment as necessary impeller/water pump housing replacement propeller/propeller nut/cotter pin inspection or replace- ment as necessary shift link/shift cable in...
Page 47: Maintenance
Maintenance 42 emu28943 greasing yamaha grease a (water resistant grease) yamaha grease d (corrosion resistant grease; for propeller shaft) 6c, 8c emu28957 cleaning and adjusting spark plug the spark plug is an important engine com- ponent and is easy to inspect. The condition of the spark plug can ...
Page 48: Maintenance
Maintenance 43 1. Remove the spark plug caps from the spark plugs. 2. Remove the spark plug. If electrode ero- sion becomes excessive, or if carbon and other deposits are excessive, you should replace the spark plug with an- other of the correct type. Warning! When removing or installing a spark plu...
Page 49: Maintenance
Maintenance 44 the outboard motor is in the water. A flushing attachment or test tank can be used. If the boat is not equipped with a tachometer for the outboard motor, use a diagnostic ta- chometer for this procedure. Results may vary depending on whether testing is con- ducted with the flushing at...
Page 50: Maintenance
Maintenance 45 check the propeller shaft oil seal for dam- age. Emu30662 removing propeller emu29197 spline models 1. Straighten the cotter pin and pull it out using a pair of pliers. 2. Remove the propeller nut, washer, and spacer (if equipped). Warning! Do not use your hand to hold the propel- ler...
Page 51: Maintenance
Maintenance 46 fastened to the transom or a stable stand. You could be severely injured if the outboard motor falls on you. Never get under the lower unit while it is tilted, even when the tilt support lever or knob is locked. Severe injury could occur if the outboard motor accidental- ly falls. 1. ...
Page 52: Maintenance
Maintenance 47 emu29302 cleaning fuel tank warning ewm00920 gasoline is highly flammable, and its va- pors are flammable and explosive. If you have any question about properly doing this procedure, consult your yamaha dealer. Keep away from sparks, cigarettes, flames, or other sources of ignition wh...
Page 53: Maintenance
Maintenance 48 yamaha dealer for inspection and replace- ment of internal anodes attached to the pow- er unit. U6m82fe0mt.Fm 48 ページ ２０１１年３月４日 金曜日 午後３時５１分.
Page 54: Trouble Recovery
49 trouble recovery emu29427 troubleshooting a problem in the fuel, compression, or igni- tion systems can cause poor starting, loss of power, or other problems. This section de- scribes basic checks and possible remedies, and covers all yamaha outboard motors. Therefore some items may not apply to ...
Page 55: Trouble Recovery
Trouble recovery 50 q. Is fuel system obstructed? A. Check for pinched or kinked fuel line or other obstructions in fuel system. Q. Is fuel contaminated or stale? A. Fill tank with clean, fresh fuel. Q. Is fuel filter clogged? A. Clean or replace filter. Q. Have ignition parts failed? A. Have servic...
Page 56: Trouble Recovery
Trouble recovery 51 q. Is load on boat improperly distributed? A. Distribute load to place boat on an even plane. Q. Is water pump or thermostat faulty? A. Have serviced by a yamaha dealer. Q. Is there excess water in fuel filter cup? A. Drain filter cup. Engine power loss. Q. Is propeller damaged? ...
Page 57: Trouble Recovery
Trouble recovery 52 q. Is fuel joint connection incorrect? A. Connect correctly. Q. Is heat range of spark plug incorrect? A. Inspect spark plug and replace it with rec- ommended type. Q. Is high pressure fuel pump drive belt bro- ken? A. Have serviced by a yamaha dealer. Q. Is engine not responding...
Page 58: Trouble Recovery
Trouble recovery 53 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. Avoid accidentally...
Page 59: Trouble Recovery
Trouble recovery 54 6. Insert the knotted end of the emergency starter rope into the notch in the flywheel rotor and wind the rope several turns around the flywheel clockwise. 7. Give a strong pull straight out to crank and start the engine. Repeat if neces- sary. Emu33501 treatment of submerged mot...
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