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Maintenance

 

36

 

EMU28522

 

Maintenance chart

 

Frequency of maintenance operations may be adjusted according to the operating condi-
tions, but the following table gives general guidelines. Refer to the sections in this chapter for
explanations of each owner-specific action.

NOTE:

 

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.

 

Item

Actions

Initial

Every

10 hours 

(1 month)

50 hours 

(3 

months)

100 

hours (6 
months)

200 

hours (1 

year)

 

Anode(s) (external)

Inspection / replace-
ment

Anode(s) (internal)

Inspection / replace-
ment

Cooling water pas-
sages

Cleaning

Cowling clamp

Inspection

Fuel filter (disposable)

Inspection / replace-
ment

Fuel system

Inspection

Fuel tank (Yamaha por-
table tank)

Inspection / cleaning

Gear oil

Change

Greasing points

Greasing

Idling speed (carbure-
tor models)

Inspection

Propeller and cotter pin

Inspection / replace-
ment

Shift link / shift cable

Inspection / adjustment

Thermostat

Inspection / replace-
ment

Throttle link / throttle 
cable / throttle pick-up 
timing

Inspection / adjustment

Water pump

Inspection / replace-
ment

Spark plug(s)

Cleaning / adjustment / 
replacement

Summary of Contents for 8

Page 1: ...8 OWNER S MANUAL 6M8 F8199 1B U S A Edition LIT 18626 06 91 U6M81BMC 06 2 9 16 00 1...

Page 2: ...EMU25060 ZMU01690 Read this owner s manual carefully before operating your outboard motor U6M81BMC 06 2 9 16 00 2...

Page 3: ...t board motor CAUTION ECM00700 A CAUTION indicates special precautions that must be taken to avoid damage to the outboard motor NOTE A NOTE provides key information to make procedures easier or cleare...

Page 4: ...pe 14 Operation 16 Installation 16 Mounting the outboard motor 16 Clamping the outboard motor 17 Breaking in engine 18 Gasoline and engine oil mixing chart 25 1 18 Procedure for pre mixed models 18 Pr...

Page 5: ...40 Removing the propeller 41 Installing the Propeller 41 Changing gear oil 41 Cleaning fuel tank 42 Inspecting and replacing anode s 43 Checking top cowling 43 Coating the boat bottom 44 Trouble Recov...

Page 6: ...board motor is sto len EMU25221 Emission control information EMU25230 North American models This engine conforms to U S Environmental Protection Agency EPA regulations for ma rine SI engines See the l...

Page 7: ...e an approved personal flotation de vice PFD on board for every occupant It is a good idea to wear a PFD whenever boating At a minimum children and non swimmers should always wear PFDs and everyone sh...

Page 8: ...sing of empty containers consult the dealer where you purchased the oil When replacing oils used to lubricate the product engine or gear oil be sure to wipe away any spilt oil Never pour oil with out...

Page 9: ...as the right of way it is called the stand on vessel The vessel which does not have the right of way is called the give way or burdened vessel These rules determine which vessel has the right of way a...

Page 10: ...ep the other ves sel on your port left side This rule doesn t apply if both of you will clear one another if you continue on your set course and speed Crossing When two power driven vessels are crossi...

Page 11: ...n vessel has the right of way 2 Sailing vessels should keep clear of any fishing vessel 3 In a narrow channel a sailing vessel should not hamper the safe passage of a power driven vessel which can nav...

Page 12: ...FLAMMABLE AND EXPLOSIVE Do not smoke when refueling and keep away from sparks flames or other sources of ignition Stop engine before refueling Refuel in a well ventilated area Refuel portable fuel tan...

Page 13: ...Engine oil If the recommended engine oil is not avail able another 2 stroke engine oil with an NMMA certified TC W3 rating may be used EMU25742 Propeller selection The performance of your outboard mot...

Page 14: ...le setting to maintain the engine in the proper operating range For instructions on propeller removal and in stallation see page 40 EMU25770 Start in gear protection Yamaha outboard motors or Yamaha a...

Page 15: ...voir and must not be used as a fuel storage container Com mercial users should conform to relevant licensing or approval authority regula 1 3 4 5 2 6 16 7 8 9 10 11 12 14 15 13 ZMU04490 1 Manual start...

Page 16: ...To loosen the screw turn it counterclockwise EMU25911 Tiller handle To change direction move the tiller handle to the left or right as necessary EMU25922 Gear shift lever Pulling the gear shift lever...

Page 17: ...cident When constant speed is desired tighten the adjuster to maintain the desired throttle set ting EMU25990 Engine stop lanyard switch The lock plate must be attached to the en gine stop switch for...

Page 18: ...e with the rich fuel mix ture required to start pull out this knob EMU26070 Manual starter handle To start the engine first gently pull the han dle out until resistance is felt From that posi tion the...

Page 19: ...to the transom EMU26280 Shallow water lever Pushing this lever down will tilt the motor up partially to provide more clearance when op erating in shallow water EMU26320 Tilt support knob To keep the o...

Page 20: ...Basic components 15 1 Top cowling lock lever s ZMU02862 1...

Page 21: ...c tion is intended as reference only It is not possible to provide complete in structions for every possible boat and motor combination Proper mounting depends in part on experience and the specific b...

Page 22: ...tor see page 25 EMU26970 Clamping the outboard motor 1 Place the outboard motor on the tran som so that it is positioned as close to the center as possible Tighten the tran som clamp screws evenly and...

Page 23: ...mixing chart 25 1 CAUTION ECM00150 Be sure to mix gasoline and oil complete ly otherwise the engine may be dam aged EMU27074 Procedure for pre mixed models Run the engine under load in gear with a pr...

Page 24: ...r likely to contact sharp objects if equipped Yamaha fuel tank or boat tank EMU27120 Oil Check to be sure you have plenty of oil for your trip EMU27130 Controls Check throttle shift and steering for p...

Page 25: ...s could occur Low oil ratio Lack of oil could cause major engine trouble such as piston seizure High oil ratio Too much oil could cause fouled spark plugs smoky exhaust and heavy carbon deposits NOTE...

Page 26: ...If a steering friction adjuster is provided on your outboard motor securely attach the fuel line to the fuel line clamp NOTE During engine operation place the tank hori zontally otherwise fuel cannot...

Page 27: ...low rapidly This could cause people and objects in the boat to be thrown forward 3 Place the throttle grip in the start position 4 Pull out turn the choke knob fully After the engine starts replace re...

Page 28: ...ing water pilot hole CAUTION ECM00511 A continuous flow of water from the cool ing water pilot hole shows that the water pump is pumping water through the cool ing passages If water is not flowing out...

Page 29: ...throttle grip in the fully closed position 2 On models equipped with a tilt lock le ver check that it is in the lock down po sition 3 Move the gear shift lever quickly and firmly from neutral to rever...

Page 30: ...trim angle of the outboard motor helps determine the position of the bow of the boat in the water Correct trim angle will help im prove performance and fuel economy while reducing strain on the engin...

Page 31: ...ks best for your boat and operating conditions WARNING EWM00400 Stop the engine before adjusting the trim angle Use care to avoid being pinched when removing or installing the rod Use caution when try...

Page 32: ...reasing fuel economy and making it hard to increase speed Oper ating with excessive trim in at higher speeds also makes the boat unstable Resistance at the bow is greatly increased heightening the dan...

Page 33: ...therwise water could run into the cylinder and cause damage The outboard motor cannot be tilted when in reverse or when the outboard motor is turned 180 facing the rear EMU27978 Procedure for tilting...

Page 34: ...ld cause the outboard motor to lift out of the water resulting in loss of control Do not rotate the outboard motor 180 and operate the boat in reverse Place the gear shift in reverse to operate the bo...

Page 35: ...192 Cruising in other conditions Cruising in salt water After operating in salt water flush the cooling water passages with fresh water to prevent them from becoming clogged with salt de posits NOTE F...

Page 36: ...165 0 cm3 10 07 cu in Bore stroke 50 0 42 0 mm 1 97 1 65 in Ignition system CDI Spark plug with resistor NGK BR7HS 10 Spark plug gap 0 9 1 0 mm 0 035 0 039 in Control system Tiller Starting system Man...

Page 37: ...e trail ered in the normal running position use an additional support device to secure it in the tilt position The outboard motor should be trailered and stored in the normal running position If there...

Page 38: ...is to be drained instead 3 Remove the engine top cowling and si lencer cover 4 Install the outboard motor on the test tank 5 Fill the tank with fresh water to above the level of the anti cavitation pl...

Page 39: ...aky seal Seal replacement should be performed by an authorized Yamaha dealer prior to use 3 Grease all grease fittings For further de tails see page 37 EMU28421 Cleaning and anticorrosion measures 1 W...

Page 40: ...or purchase through your Yamaha dealer for owners who have the mechanical skills tools and other equipment necessary to perform mainte nance not covered by this owner s manual EMU28510 Replacement par...

Page 41: ...Actions Initial Every 10 hours 1 month 50 hours 3 months 100 hours 6 months 200 hours 1 year Anode s external Inspection replace ment Anode s internal Inspection replace ment Cooling water pas sages C...

Page 42: ...sulator A damaged insulator could allow external sparks which could lead to explosion or fire The spark plug is an important engine com ponent and is easy to inspect The condition of the spark plug ca...

Page 43: ...e when you are fitting a spark plug a good estimate of the correct torque is 1 4 to 1 2 a turn past fin ger tight Have the spark plug adjusted to the correct torque as soon as possible with a torque w...

Page 44: ...shing attachment or test tank can be used A diagnostic tachometer should be used for this procedure Results may vary depending on whether testing is conducted with the flushing attachment in a test ta...

Page 45: ...he spark plug caps from the spark plugs Also place the shift control in neutral turn the main switch to off and re move the key and remove the lanyard from the engine stop switch Turn off the battery...

Page 46: ...oss could be damaged Be sure to use a new cotter pin and bend the ends over securely Otherwise the propeller could come off during op eration and be lost 1 Apply Yamaha marine grease or a cor rosion r...

Page 47: ...drained If the oil is milky water is getting into the gear case which can cause gear damage Consult a Yamaha dealer for re pair of the lower unit seals NOTE For disposal of used oil consult your Yamah...

Page 48: ...tank 4 Clean the filter located on the end of the suction pipe in a suitable cleaning sol vent Allow the filter to dry 5 Replace the gasket with a new one Re install the fuel joint assembly and tight...

Page 49: ...om 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 Do not use anti fouling...

Page 50: ...Have serviced by a Yamaha dealer Q Is shift lever in gear A Shift to neutral Engine will not start starter operates Q Is fuel tank empty A Fill tank with clean fresh fuel Q Is fuel contaminated or st...

Page 51: ...damaged A Have serviced by a Yamaha dealer Q Is air vent screw on fuel tank closed A Open air vent screw Q Is choke knob pulled out A Return to home position Q Is motor angle too high A Return to nor...

Page 52: ...d or of incorrect type A Inspect spark plug s Clean or replace with recommended type Q Are weeds or other foreign matter tangled on gear housing A Remove foreign matter and clean lower unit Q Is fuel...

Page 53: ...outboard motor can be seriously damaged by a collision while operating or trailering Damage could make the out board motor unsafe to operate If the outboard motor hits an object in the wa ter follow t...

Page 54: ...ine Use the emergency starter rope only as instructed Do not touch the fly wheel or other moving parts when the engine is running Do not install the starter mechanism or top cowling after the engine i...

Page 55: ...in almost immedi ately If you cannot immediately take the outboard motor to a Yamaha dealer follow the proce dure below in order to minimize engine dam age EMU29771 Procedure 1 Thoroughly wash away mu...

Page 56: ...Trouble Recovery 51 5 Take the outboard motor to a Yamaha dealer as soon as possible CAUTION ECM00400 Do not attempt to run the outboard motor until it has been completely inspected...

Page 57: ...52 Consumer information EMU29811 Important warranty information for U S A and Canada...

Page 58: ...Consumer information 53...

Page 59: ...Consumer information 54 EMU29820 YAMAHA MOTOR CORPORATION U S A OUTBOARD MOTOR TWO YEAR LIMITED WARRANTY...

Page 60: ...Consumer information 55...

Page 61: ...Consumer information 56...

Page 62: ...Consumer information 57 EMU29841 IMPORTANT WARRANTY INFORMATION IF YOU USE YOUR YAMAHA OUTSIDE THE USA OR CANADA...

Page 63: ...U6M81BMC 06 2 9 16 00 3...

Page 64: ...Printed in France April 2006 0 5 1 U6M81BMC 06 2 9 16 00 4...

Page 65: ...Warranty card 12 6 01 7 40 PM Page 1...

Page 66: ...Warranty card 12 6 01 7 40 PM Page 2...

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