Yamaha E25B Owner's Manual

OWNER’S MANUAL E25B25B25X30H 69R-28199-27-E0

Safety information 5 EMU33740 Boating safety This section includes a few of the many im-portant safety precautions that you shouldfollow when boating

Safety information 6 EMU33790 Weather Stay informed about the weather. Checkweather forecasts before boating. Avoidboating in hazardous weather. EMU3

7 Basic requirements EMU25540 Fueling instructionsWARNING EWM00010 GASOLINE AND ITS VAPORS ARE HIGH-LY FLAMMABLE AND EXPLOSIVE! ● Do not smoke when

Basic requirements 8 19.WARNING EWM01570 ● Improper mounting of the outboard mo-tor could result in hazardous condi-tions such as poor handling, los

Basic requirements 9 where a different propeller would be moreappropriate.Your Yamaha dealer can help you select theright propeller for your boating

10 Basic components EMU2579B Main componentsNOTE: * May not be exactly as shown; also may not be included as standard equipment on all mod- els. E25B

Basic components 11 fuel tank, its function is as follows.WARNING EWM00020 The fuel tank supplied with this engine isits dedicated fuel reservoir an

Basic components 12 EMU26201 Neutral interlock trigger To shift out of neutral, first pull the neutral in-terlock trigger up. EMU26211 Neutral thrott

Basic components 13 EMU25922 Gear shift lever Pulling the gear shift lever towards you putsthe engine in forward gear so that the boatmoves ahead. Pu

Basic components 14 there is too much resistance, it could bedifficult to move the remote control leveror throttle grip, which could result in an acc

EMU25051 Read this owner’s manual carefully before operating or working on your outboard motor. Keep this manual onboard in a waterproof bag when bo

Basic components 15 EMU26001 Engine stop button To open the ignition circuit and stop the en-gine, push this button. EMU26011 Choke knob for pull typ

Basic components 16 set according to operator preference. An ad-justing screw or bolt is located on the swivelbracket.To increase resistance, turn th

Basic components 17 EMU30530 Tilt lock mechanism The tilt lock mechanism is used to preventthe outboard motor from lifting out of the wa-ter when in

Basic components 18 EMU26410 2-pin connector AC 12 V-40/60/80W power is deliveredthrough this connector. When using it, keepin mind the following poi

19 Operation EMU26902 Installation The information presented in this section isintended as reference only. It is not possibleto provide complete inst

Operation 20CAUTION: ECM01630 ● During water testing, check the buoy-ancy of the boat, at rest, with its maxi-mum load. Check that the static waterl

Operation 21 if it accidentally falls off the transom.3. Secure the clamp bracket to the transomusing the bolts provided with the out-board (if packe

Operation 22 3. Next two hours:Accelerate at full throttle onto plane,then reduce engine speed to three-quar-ter throttle (approximately 4000 r/min).

Operation 23 sources of ignition. 1. Remove the fuel tank cap.2. Fill the fuel tank carefully.3. Close the cap securely after refueling.Wipe up any s

Operation 24 EMU27450 Operating engine EMU27463 Feeding fuel (portable tank)WARNING EWM00420 ● Before starting the engine, make surethat the boat is

Important manual information EMU25103 To the owner Thank you for choosing a Yamaha outboardmotor. This Owner’s Manual contains infor-mation needed fo

Operation 25 EMU27491 Starting engineWARNING EWM01600 Before starting the engine, make surethat the boat is tightly moored and thatyou can steer cle

Operation 26 4. Pull out / turn the choke knob fully. Afterthe engine starts, replace / return theknob to the home position.NOTE: ● It is not necessa

Operation 27NOTE: The start-in-gear protection device preventsthe engine from starting except when in neu- tral.2. Attach the engine shut-off cord to

Operation 28NOTE: ● It is not necessary to use the choke whenstarting a warm engine. ● If the choke knob is left in the “”(start) position while the

Operation 29 the boat could slow rapidly. This couldcause people and objects in the boat to be thrown forward. 3. Turn the main switch to “” (on).4.

Operation 30 6. Turn the main switch to “” (start),and hold it for a maximum of 5 seconds.7. Immediately after the engine starts, re-lease the main s

Operation 31 engine and allow it to warm up. To shift out of neutral1. Pull the neutral interlock trigger up (ifequipped).2. Move the remote control

Operation 32 2. After the engine is at idle speed in gearmove the remote control lever / gearshift lever firmly and crisply into the neu-tral positio

Operation 33 2. After stopping the engine, disconnectthe fuel line if there is a fuel joint on theoutboard motor.3. Tighten the air vent screw on the

Operation 34 EMU27872 Adjusting trim angle for manual tilt models There are 4 or 5 holes provided in the clampbracket to adjust the outboard motor tr

Table of contents General information ... 1 Identification numbers record... 1 Outboard motor serial number ...

Operation 35 the boat is up about 3 to 5 degrees. With thebow up, the boat may have a greater tenden-cy to steer to one side or the other. Compen-sat

Operation 36 the engine will be tilted for more than a few minutes. Otherwise fuel may leak.CAUTION: ECM00241 ● Before tilting the outboard motor, s

Operation 37 when trailering the boat. The outboardmotor could shake loose from the tilt sup-port and fall. If the motor cannot be trail-ered in the

Operation 38 2. Push the tilt lock lever down to the re-lease position.3. Slightly tilt the outboard motor up andpull the shallow water lever toward

39 Maintenance EMU31480 SpecificationsNOTE: “(AL)” stated in the specification data belowrepresents the numerical value for the alumi-num propeller i

Maintenance 40 30HMH BR8HS-1030HW BR8HS-10E25BMH BR7HS-10Spark plug gap: 0.9–1.0 mm (0.035–0.039 in)Control system: 25BMH Tiller25XMH Tiller30HMH Til

Maintenance 41 transporting and storing the outboardmotor, close the air vent screw and fuelcock to prevent fuel from leaking. ● USE CARE when transp

Maintenance 42 lowing procedures.CAUTION: ECM01411 ● Do not place the outboard motor on itsside before the cooling water hasdrained from it complete

Maintenance 43 cessively and almost stall.8. Remove the outboard motor from thetest tank.9. Install the silencer cover/cap of fogginghole and top cow

Maintenance 44 Procedure1. Disconnect and remove the battery fromthe boat. Always disconnect the blacknegative cable first to prevent the risk ofshor

Table of contents Filling fuel for portable tank... 22Gasoline and oil mixing (100:1) ... 23 Operating engine...

Maintenance 45 EMU28522 Maintenance chart Frequency of maintenance operations may be adjusted according to the operating condi-tions, but the followi

Maintenance 46 EMU28874 Maintenance chart (additional) Spark plug(s)Cleaning / adjustment / replacement Item ActionsEvery500 hours (2.5 years) 1000 h

Maintenance 47 EMU28941 Greasing Yamaha grease A (water resistant grease)Yamaha grease D (corrosion resistant grease; for propeller shaft) E25B, 25B,

Maintenance 48 fire.WARNING EWM01550 The engine will still be very hot when ithas just been turned off. Take extremelycare so that neither you nor a

Maintenance 49 sources of ignition.WARNING EWM00910 Leaking fuel can result in fire or explo-sion. ● Check for fuel leakage regularly. ● If any fuel

Maintenance 50 solvent. Allow it to dry. Inspect the filterelement and O-ring to make sure theyare in good condition. Replace them ifnecessary. If an

Maintenance 51 EMU29120 Exhaust leakage Start the engine and check that no exhaustleaks from the joints between the exhaustcover, cylinder head, and

Maintenance 52 age. EMU30661 Removing propeller EMU29195 Spline models 1. Straighten the cotter pin and pull it outusing a pair of pliers.2. Remove t

Maintenance 53 1. Tilt the outboard motor so that the gearoil drain screw is at the lowest point pos-sible.2. Place a suitable container under thegea

Maintenance 54 an area with good ventilation. ● Wipe up any spilled fuel immediately. ● Reassemble the fuel tank carefully. Im-proper assembly can re

1 General information EMU25170 Identification numbers record EMU25183 Outboard motor serial number The outboard motor serial number isstamped on the

Maintenance 55 and get immediate medical attention.Antidote (INTERNAL): ● Drink large quantities of water or milkfollowed by milk of magnesia, beaten

Maintenance 56 when installing the battery and discon-nect the black battery cable first whenremoving it. ● The electrical contacts of the batteryand

57 Trouble Recovery EMU29425 Troubleshooting A problem in the fuel, compression, or igni-tion systems can cause poor starting, loss ofpower, or other

Trouble Recovery 58 A. Check for pinched or kinked fuel line orother obstructions in fuel system.Q. Is fuel contaminated or stale?A. Fill tank with c

Trouble Recovery 59 Q. Is load on boat improperly distributed?A. Distribute load to place boat on an evenplane.Q. Is water pump or thermostat faulty?

Trouble Recovery 60 Q. Is fuel joint connection incorrect?A. Connect correctly.Q. Is heat range of spark plug incorrect?A. Inspect spark plug and rep

Trouble Recovery 61NOTE: Consult your Yamaha dealer if the new fuse immediately blows again. EMU29533 Starter will not operate If the starter mechani

Trouble Recovery 62 3. Remove the starter/flywheel cover afterremoving the bolt(s).4. Prepare the engine for starting. For fur-ther information, see

Trouble Recovery 63 2. Remove the spark plugs and face thespark plug holes downward to allow anywater, mud, or contaminants to drain.3. Drain the fue

General information 2 EMU25213 C-Tick label Engines affixed with this label conform tocertain portion(s) of the Australian RadioCommunications Act. E

YAMAHA MOTOR CO., LTD. Printed on recycled paperPrinted in JapanApril 2007–0.5 × 1 !

General information 3 starting device. ● The engine will not start unless the shift control is in neutral position. EMU25465 Caution labels EMU30480

4 Safety information EMU33620 Safety information Observe these precautions at all times. EMU33630 Rotating parts Hands, feet, hair, jewelry, clothing