Yamaha 5C Owner's Manual

Read this manual carefully before operating thisoutboard motor.OWNER’S MANUAL4AC5C6E0-28199-28-E0U6E028E0.book Page 1 Tuesday, February 10, 2009 3

General information51. C-Tick label locationZMU01697U6E028E0.book Page 5 Tuesday, February 10, 2009 3:19 PM

General information6EMU33520Read manuals and labelsBefore operating or working on this motor:● Read this manual.● Read any manuals supplied with the b

General information7EMU35281Contents of labelsThe above warning labels mean as follows.1WARNINGEWM01691Emergency starting does not have start-in-gear

General information84WARNINGEWM01701Gasoline is highly flammable and explo-sive. Shut off engine before refueling.Tighten tank cap and air vent screw

General information9Engine start/ Engine crankingZMU05668U6E028E0.book Page 9 Tuesday, February 10, 2009 3:19 PM

Specifications and requirements10EMU31480SpecificationsTIP:“(AL)” stated in the specification data belowrepresents the numerical value for the alumi-n

Specifications and requirements11Regular gasoline:100 :1Lubrication:Pre-mixed fuel and oilRecommended gear oil:Hypoid gear oil SAE#90Gear oil quantity

Specifications and requirements12Your Yamaha dealer can help you select theright propeller for your boating needs. Selecta propeller that will allow t

Specifications and requirements13does not recommend gasohol containingmethanol because it can cause fuel systemdamage or engine performance problems.E

Components14EMU2579MComponents diagramTIP:* May not be exactly as shown; also may not be included as standard equipment on all models.4AC1. Air vent s

Read this manual carefully before operating this outboard motor. Keep thismanual onboard in a waterproof bag when boating. This manual should staywith

Components155CEMU25802Fuel tankIf your model was equipped with a portablefuel tank, its function is as follows.WARNINGEWM00020The fuel tank supplied w

Components16EMU25821Fuel tankIf your model included a fuel tank, its partsand functions are as follows.EMU25830Fuel jointThis joint is used to connect

Components17EMU25891OpenWith the lever/knob in this position, fuel flowsto the carburetor.Normal running is done with the lever/knob inthis position.E

Components18EMU25941Throttle gripThe throttle grip is on the tiller handle. Turnthe grip counterclockwise to increase speedand clockwise to decrease s

Components19EMU25993Engine shut-off cord (lanyard) and clipThe clip must be attached to the engine shut-off switch for the engine to run. The cordshou

Components20EMU26122Steering friction adjusterA friction device provides adjustable resis-tance to the steering mechanism, and can beset according to

Installation21EMU26902InstallationThe information presented in this section is in-tended as reference only. It is not possible toprovide complete inst

Installation22NOTICEECM01631● Check that the idle hole stays highenough to keep out water getting insideengine even if the boat is in stationarywith m

Installation23packaging. If used, they must be of atleast the same quality of material andstrength and must be tightened se-curely. After tightening,

Operation24EMU36381First-time operationEMU30174Breaking in engineYour new engine requires a period of break-into allow mating surfaces of moving parts

Important manual informationEMU25105To the ownerThank you for choosing a Yamaha outboardmotor. This Owner’s Manual contains infor-mation needed for pr

Operation25NOTICEECM00120Do not start the engine out of water. Over-heating and serious engine damage canoccur.EMU37141Fuel levelBe sure you have plen

Operation26EMU27141Engine● Check the engine and engine mounting.● Look for loose or damaged fasteners.● Check the propeller for damage.EMU36953Install

Operation273. Remove the portable tank from the boat.4. Be sure you are in a well-ventilated out-door area, either securely moored or trail-ered.5. Do

Operation283. Remove the portable tank from the boat.4. Be sure you are in a well-ventilated out-door area, either securely moored or trail-ered.5. Do

Operation29If equipped with a portable fuel tank1. Pour oil into the portable fuel tank, andthen add gasoline.2. Replace the fuel tank cap and close t

Operation30EMU27451Operating engineEMU27466Sending fuel (portable tank)WARNINGEWM00420● Before starting the engine, make surethat the boat is tightly

Operation31EMU27474Sending fuelWARNINGEWM00420● Before starting the engine, make surethat the boat is tightly moored and thatyou can steer clear of an

Operation32EMU27493Starting engineWARNINGEWM01600Before starting the engine, make sure thatthe boat is tightly moored and that you cansteer clear of a

Operation33TIP:● It is not necessary to use the choke whenstarting a warm engine.● If the choke knob is left in the “” (start)position while the engin

Operation34the cooling water pilot hole is blocked.Consult your Yamaha dealer if the prob-lem cannot be located and corrected.Check that no water leak

Table of contentsSafety information... 1Outboard motor safety ... 1Propeller ...

Operation352. After the engine is at idle speed in gearmove the gear shift lever firmly and crisp-ly into the neutral position.TIP:The outboard motor

Operation363. Disconnect the fuel line if you are usingan external fuel tank.TIP:If the outboard motor is equipped with an en-gine shut-off cord, the

Operation37EMU27872Adjusting trim angle for manual tilt modelsThere are 4 or 5 holes provided in the clampbracket to adjust the outboard motor trim an

Operation38Bow DownToo much trim-in causes the boat to “plow”through the water, decreasing fuel economyand making it hard to increase speed. Operat-in

Operation392. Tighten the steering friction adjuster byturning it clockwise to prevent the motorfrom turning freely.3. Tighten the air vent screw.4. C

Operation40EMU28033Procedure for tilting down (manual tilt models)1. Slightly tilt the outboard motor up.2. If equipped with the tilt support bar: Slo

Operation412. Slightly tilt the outboard motor up until thetilt support bar automatically turns to thelock position to support the engine. Theoutboard

Maintenance42EMU28227Transporting and storing out-board motorWARNINGEWM00693● USE CARE when transporting fuel tank,whether in a boat or car.● DO NOT f

Maintenance43NOTICEECM01411● Do not place the outboard motor on itsside before the cooling water hasdrained from it completely, otherwisewater may ent

Maintenance44EMU28402Lubrication1. Install the spark plug(s) and torque toproper specification. For information onspark plug installation, see page 48

Table of contentsRemove cowling... 25Fuel system ... 25Controls...

Maintenance45● Operating without sufficient time for engineto warm up and cool down● Frequent quick acceleration and decelera-tion● Frequent shifting●

Maintenance46Fuel line(High pres-sure)Inspection or replace-ment as necessaryFuel line(Low pres-sure)InspectionFuel line(Low pres-sure)Inspection or r

Maintenance47EMU34451Maintenance chart 2EMU28941GreasingYamaha grease A (water resistant grease)Yamaha grease D (corrosion resistant grease; for prope

Maintenance48EMU28956Cleaning and adjusting spark plugThe spark plug is an important engine compo-nent and is easy to inspect. The condition ofthe spa

Maintenance49EMU29043Inspecting idling speedWARNINGEWM00451● Do not touch or remove electrical partswhen starting or during operation.● Keep hands, ha

Maintenance50● Check the propeller shaft oil seal for dam-age.EMU30662Removing propellerEMU29197Spline models1. Straighten the cotter pin and pull it

Maintenance51TIP:If the propeller nut does not align with the pro-peller shaft hole after tightening it, loosen thenut until it aligns with the hole.E

Maintenance527. Put a new gasket on the gear oil drainscrew. Insert and tighten the gear oildrain screw.EMU29302Cleaning fuel tankWARNINGEWM00920Gasol

Maintenance53EMU29312Inspecting and replacing anode(s)Yamaha outboard motors are protected fromcorrosion by sacrificial anodes. Inspect theexternal an

Trouble Recovery54EMU29427TroubleshootingA problem in the fuel, compression, or ignitionsystems can cause poor starting, loss of pow-er, or other prob

1Safety informationEMU33622Outboard motor safetyObserve these precautions at all times.EMU36501PropellerPeople can be injured or killed if they come i

Trouble Recovery55A. Check for pinched or kinked fuel line or oth-er obstructions in fuel system.Q. Is fuel contaminated or stale?A. Fill tank with cl

Trouble Recovery56Q. Is load on boat improperly distributed?A. Distribute load to place boat on an evenplane.Q. Is water pump or thermostat faulty?A.

Trouble Recovery57A. Connect correctly.Q. Is heat range of spark plug incorrect?A. Inspect spark plug and replace it with rec-ommended type.Q. Is high

Trouble Recovery58● Do not attach the cord to clothing thatcould tear loose. Do not route the cordwhere it could become entangled, pre-venting it from

Trouble Recovery59EMU33501Treatment of submerged motorIf the outboard motor is submerged, immedi-ately take it to a Yamaha dealer. Otherwisesome corro

U6E028E0.book Page 60 Tuesday, February 10, 2009 3:19 PM

YAMAHA MOTOR CO., LTD.Printed on recycled paperPrinted in JapanMarch 2009–0.3 × 1 CRU6E028E0.book Page 1 Tuesday, February 10, 2009 3:19 PM

Safety information2EMU33780ModificationsDo not attempt to modify this outboard motor.Modifications to your outboard motor may re-duce safety and relia

Safety information3● Avoid sharp turns or other maneuvers thatmake it hard for others to avoid you or un-derstand where you are going.● Avoid areas wi

General information4EMU25171Identification numbers recordEMU25183Outboard motor serial numberThe outboard motor serial number is stampedon the label a