OWNER’S MANUAL
Z250D
LZ250D
Z300D
LZ300D
U.S.A.Edition
LIT-18626-06-09
6D0-28199-12
EMU25071
ZMU01690
Read this owner’s manual carefully before operating your outboard motor.
Important manual information
EMU25100
To the owner
Thank you for choosing a Yamaha outboard
motor. This Owner’s Manual contains information needed for proper operation, maintenance and care. A thorough understanding
of these simple instructions will help you obtain maximum enjoyment from your new
Yamaha. If you have any question about the
operation or maintenance of your outboard
motor, please consult a Yamaha dealer.
In this Owner’s Manual particularly important
information is distinguished in the following
ways.
The Safety Alert Symbol means
ATTENTION! BECOME ALERT! YOUR
SAFETY IS INVOLVED!
EWM00780
WARNING
Failure to follow WARNING instructions
could result in severe injury or death
the machine operator, a bystander, or a
person inspecting or repairing the outboard motor.
ECM00700
CAUTION:
A CAUTION indicates special precautions
that must be taken to avoid damage to the
outboard motor.
to
al, please consult your Yamaha dealer.
NOTE:
The Z250TR, LZ250TR, Z300TR, LZ300TR
and the standard accessories are used as a
base for the explanations and illustrations in
this manual. Therefore some items may not
apply to every model.
EMU25110
Z250D, LZ250D, Z300D, LZ300D
OWNER’S MANUAL
©2004 by Yamaha Motor Corporation, USA
1st edition, April 2004
All rights reserved.
Any reprinting or unauthorized use
without the written permission of
Yamaha Motor Corporation, USA
is expressly prohibited.
Printed in Japan
P/N LIT-18626-06-09
NOTE:
A NOTE provides key information to make
procedures easier or clearer.
Yamaha continually seeks advancements in
product design and quality. Therefore, while
this manual contains the most current product information available at the time of printing, there may be minor discrepancies
between your machine and this manual. If
there is any question concerning this manu-
Table of contents
General information ..........................1
Identification numbers record........... 1
Outboard motor serial number ..........1
Key number....................................... 1
Emission control information ............1
North American models..................... 1
Star labels .........................................2
Safety information ............................3
Important labels................................ 4
Warning labels ..................................4
Caution labels ...................................5
Basic boating rules
(Rules of the road) .........................5
Steering and sailing rules and sound
signals............................................. 5
Rules when encountering vessels .... 6
Other special situations..................... 7
Fueling instructions ..........................9
Gasoline.......................................... 10
Engine oil ........................................10
Battery requirement........................ 10
Battery specifications ......................11
Propeller selection.......................... 11
Start-in-gear protection ..................11
Basic components ..........................12
Main components........................... 12
Remote control................................ 12
Remote control lever....................... 13
Neutral interlock trigger................... 13
Neutral throttle lever........................ 14
Free accelerator.............................. 14
Throttle friction adjuster................... 14
Engine stop lanyard switch .............15
Main switch .....................................16
Power trim and tilt switch on remote
control or tiller handle ................... 16
Power trim and tilt switch on bottom
engine cowling .............................. 16
Power trim and tilt switches
(twin binnacle type)....................... 17
Trim tab with anode ........................ 17
Tilt support lever for power trim
and tilt or hydro tilt model.............. 18
Top cowling lock lever
(pull up type) ................................. 18
Flushing device ...............................18
Tachometer ..................................... 19
Digital tachometer ...........................19
Oil level indicators
(three indicators) ........................... 19
Oil level indicator (digital type) ........20
Overheat warning indicator
(digital type) ..................................20
Speedometer (digital type) .............. 20
Trim meter....................................... 21
Trim meter (digital type) ..................21
Hour meter (digital type).................. 21
Trip meter........................................ 22
Clock ...............................................22
Fuel gauge ......................................22
Fuel warning indicator ..................... 23
Low battery voltage warning
indicator ........................................23
Fuel management meter ................. 23
Fuel flow meter................................ 24
Fuel consumption meter.................. 24
Fuel economy.................................. 25
Twin-engine speed synchronizer ....25
Water separator warning indicator ..26
Warning system ............................. 26
Overheat warning (twin engines) ....26
Oil level warning and oil filter
clogging warning ........................... 27
Operation ......................................... 29
Installation...................................... 29
Mounting the outboard motor .......... 29
Breaking in engine ......................... 30
Procedure for HPDI models ............31
Preoperation checks ...................... 31
Fuel .................................................31
Oil.................................................... 31
Controls........................................... 32
Engine ............................................. 32
Operation after a long period of
storage .......................................... 32
Filling fuel and engine oil ............... 33
Ring Free Fuel Additive................... 33
Filling oil for oil injection models...... 33
Oil level indicator operation............. 35
Operating engine ........................... 36
Table of contents
Feeding fuel ....................................36
Starting engine................................ 36
Warming up engine ........................38
Electric start and prime start
models .......................................... 38
Shifting ...........................................38
Forward (tiller handle and remote
control models) ............................. 38
Reverse (automatic reverse lock
and power trim and tilt models)..... 39
Stopping engine .............................39
Procedure ....................................... 39
Trimming outboard motor............... 40
Adjusting trim angle ........................ 40
Adjusting boat trim ..........................41
Tilting up and down ........................42
Procedure for tilting up.................... 43
Procedure for tilting down ...............44
Cruising in shallow water ...............45
Power trim and tilt models / power
tilt models...................................... 45
Cruising in other conditions............ 46
Maintenance..................................... 47
Specifications .................................47
Transporting and storing outboard
motor ............................................ 48
Storing outboard motor ...................48
Procedure ....................................... 49
Lubrication (oil injection models)..... 50
Cleaning and anticorrosion
measures ...................................... 50
Battery care..................................... 50
Flushing power unit......................... 51
Cleaning the outboard motor .......... 52
Checking painted surface of
motor............................................. 52
Periodic maintenance..................... 52
Replacement parts.......................... 52
Maintenance chart .......................... 53
Maintenance chart (additional)........ 54
Greasing ......................................... 55
Cleaning and adjusting spark plug.. 55
Checking fuel system...................... 56
Inspecting fuel filter .........................57
Cleaning fuel filter ...........................57
Inspecting idling speed.................... 58
Checking water in engine oil tank ...59
Checking wiring and connectors .....59
Exhaust leakage.............................. 59
Water leakage ................................. 59
Checking power trim and tilt
system........................................... 59
Checking propeller ..........................60
Removing the propeller ................... 61
Installing the propeller ..................... 62
Changing gear oil ............................ 62
Inspecting and replacing anode(s) .. 63
Checking battery (for electric start
models) .........................................64
Connecting the Battery.................... 65
Disconnecting the battery................ 66
Checking top cowling ......................66
Coating the boat bottom.................. 66
Trouble Recovery............................ 67
Troubleshooting ............................. 67
Temporary action in emergency .... 70
Impact damage ...............................70
Running single engine..................... 70
Replacing fuse ................................71
Power trim and tilt will not operate ..71
Engine fails to operate ................... 72
Low oil level warning activates........ 72
Treatment of submerged motor ..... 73
Procedure........................................ 73
Consumer information ................... 74
Important warranty information for
U.S.A. and Canada...................... 74
YAMAHA MOTOR
CORPORATION, U.S.A.
OUTBOARD MOTOR TWO
YEAR LIMITED WARRANTY ...... 76
IMPORTANT WARRANTY
INFORMATION IF YOU USE
YOUR YAMAHA OUTSIDE
U.S.A. OR CANADA .................... 79
General information
EMU25170
Identification numbers record
EMU25182
Outboard motor serial number
The outboard motor serial number is
stamped on the label attached to the port
side of the clamp bracket or the upper part of
the swivel bracket.
Record your outboard motor serial number in
the spaces provided to assist you in ordering
spare parts from your Yamaha dealer or for
reference in case your outboard motor is stolen.
1
ZMU01854
1. Outboard motor serial number location
reference in case you need a new key.
1. Key number
EMU25220
Emission control information
EMU25230
North American models
This engine conforms to U.S. Environmental
Protection Agency (EPA) regulations for marine SI engines. See the label affixed to your
engine for details.
EMU25252
Approval label of emission control certificate
This label is attached to the bottom cowling.
New Technology ; (4-stroke/HPDI) DFI
EMU25190
Key number
If a main key switch is equipped with the motor, the key identification number is stamped
on your key as shown in the illustration.
Record this number in the space provided for
1
1
1. Approval label location
ZMU04930
ZMU01856
EMU25261
Manufactured date label
This label is attached to the clamp bracket or
the swivel bracket.
1
ZMU04931
General information
particular label.
1
ZMU04932
1. Star labels location
EMU25280
One Star—Low Emission
The one-star label identifies engines that
meet the Air Resources Board’s 2001 exhaust emission standards. Engines meeting
these standards have 75% lower emissions
than conventional carbureted two-stroke engines. These engines are equivalent to the
U.S. EPA’s 2006 standards for marine engines.
1. Manufactured date label location
Manufactured:
ZMU04346
EMU25272
Star labels
Your outboard motor is labeled with a California Air Resources Board (CARB) star label. See below for a description of your
ZMU01702
EMU25290
Two Stars—Very Low Emission
The two-star label identifies engines that
meet the Air Resources Board’s 2004 exhaust emission standards. Engines meeting
these standards have 20% lower emissions
than One Star-Low-Emission engines.
2
General information
ZMU01703
EMU25300
Three Stars—Ultra Low Emission
The three-star label identifies engines that
meet the Air Resources Board’s 2008 exhaust emission standards. Engines meeting
these standards have 65% lower emissions
than One Star-Low-Emission engines.
ZMU01704
EMU25361
Safety information
●
Before mounting or operating the outboard
motor, read this entire manual. Reading it
should give you an understanding of the
motor and its operation.
Before operating the boat, read any own-
●
er’s or operator’s manuals supplied with it
and all labels. Be sure you understand
each item before operating.
Do not overpower the boat with this out-
●
board motor. Overpowering the boat could
result in loss of control. The rated power of
the outboard should be equal to or less
than the rated horsepower capacity of the
boat. If the rated horsepower capacity of
the boat is unknown, consult the dealer or
boat manufacturer.
Do not modify the outboard. Modifications
●
could make the motor unfit or unsafe to
use.
Never operate after drinking alcohol or tak-
●
ing drugs. About 50% of all boating fatalities involve intoxication.
Have 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 nonswimmers should always wear PFDs, and
everyone should wear PFDs when there
are potentially hazardous boating conditions.
●
Gasoline is highly flammable, and its vapors are flammable and explosive. Handle
and store gasoline carefully. Make sure
there are no gas fumes or leaking fuel before starting the engine.
●
This product emits exhaust gases which
contain carbon monoxide, a colorless,
odorless gas which may cause brain damage or death when inhaled. Symptoms include nausea, dizziness, and drowsiness.
Keep cockpit and cabin areas well ventilated. Avoid blocking exhaust outlets.
●
Check throttle, shift, and steering for proper operation before starting the engine.
●
Attach the engine stop switch lanyard cord
to a secure place on your clothing, or your
arm or leg while operating. If you accidentally leave the helm, the cord will pull from
the switch, stopping the engine.
Know the marine laws and regulations
●
where you will be boating—and obey
them. For basic boating rules, see “Rules
3
General information
of the road” on page 5.
●
Stay informed about the weather. Check
weather forecasts before boating. Avoid
boating in hazardous weather.
●
Tell someone where you are going: leave
a Float Plan with a responsible person. Be
sure to cancel the Float Plan when you return.
Use common sense and good judgment
●
when boating. Know your abilities, and be
sure you understand how your boat handles under the different boating conditions
you may encounter. Operate within your
limits, and the limits of your boat. Always
operate at safe speeds, and keep a careful
watch for obstacles and other traffic.
●
Always watch carefully for swimmers during the engine operation.
●
Stay away from swimming areas.
●
When a swimmer is in the water near you
shift into neutral and shut off the engine.
Be informed about boating safety. Additional
publications and information can be obtained
from many organizations, including the following:
United States Coast Guard
Consumer Affairs Staff (G-BC)
Office of Boating, Public, and Consumer Affairs
U.S. Coast Guard Headquarters
Washington, D.C. 20593-0001
Boating Safety Hotline: 1-800-368-5647
National Marine Manufacturers Association (NMMA)
401 N. Michigan Ave.
Chicago, Il 60611
Marine Retailers Association of America
155 N. Michigan Ave.
Chicago, Il 60601
EMU25380
Important labels
EMU25395
Warning labels
ZMU01858
ZMU01948
EMU25401
Label
EWM01260
WARNING
●
Be sure shift control is in neutral before
starting engine. (except 2HP)
●
Do not touch or remove electrical parts
when starting or during operation.
●
Keep hands, hair, and clothes away
from flywheel and other rotating parts
while engine is running.
EMU25413
Label (counter rotation models)
EWM01281
WARNING
Use only a counterclockwise rotation
4
General information
propeller with this engine.
Counterclockwise propellers are marked
with a letter “L” after the size indication.
The wrong type of propeller could cause
the boat to go in an unexpected direction,
which could lead to an accident.
EMU25451
Label
ENGINE OIL ONLY
Pour the engine oil into this oil tank, not
●
gasoline.
RECOMMENDED OIL:
YAMALUBE 2 STROKE OUTBOARD OIL or
an equivalent TC-W3 certified ouboard oil.
EWM01270
WARNING
Do not add gasoline to the oil tank. Fire
explosion could result.
EMU25464
Caution labels
ZMU01949
EMU30430
Label
ECM01440
CAUTION:
USE UNLEADED STRAIGHT GASOLINE
ONLY
Gasoline containing lead can cause
●
performance loss and engine damage.
●
Do not use gasoline mixed with oil (pre-
mix).
●
Use YAMALUBE 2-stroke outboard oil
or another 2-stroke engine oil with a
NMMA-certified TC-W3 rate.
Refer to Owner’s manual.
EMU25500
Basic boating rules (Rules of
the road)
Just as there are rules which apply when you
are driving on streets and high ways, there
are waterway rules which apply when you
are driving your boat. These rules are used
internationally, and are also enforced by the
United States Coast Guard and local agencies. You should be aware of these rules,
and follow them whenever you encounter
another vessel on the water.
Several sets of rules prevail according to
geographic location, but are all basically the
same as the International Rules of the Road.
The rules presented here in your Owner’s
Manual are condensed, and have been provided for your convenience only. Consult
your local U.S. Coast Guard Auxiliary or Department of Motor Vehicles for a complete
set of rules governing the waters in which
you will be using your boat.
EMU25510
Steering and sailing rules and sound
signals
Whenever two vessels on the water meet
one another, one vessel has the right-ofway; 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, and what each vessel should
do.
Stand-on vessel
The vessel with the right-of-way has the duty
to continue its course and speed, except to
avoid an immediate collision. When you
maintain your direction and speed, the other
5
General information
vessel will be able to determine how best to
avoid you.
Give-way vessel
The vessel which does not have the right-ofway has the duty to take positive and timely
action to stay out of the way of the Stand-On
vessel. Normally, you should not cross in
front of the vessel with the right-of-way. You
should slow down or change directions briefly and pass behind the other vessel. You
should always move in such a way that the
operator of the other vessel can see what
you are doing.
“The general prudential rule”
This rule is called Rule 2 in the International
Rules and says,
“In obeying and construing these rules due
regard shall be had to all dangers of navigation and collision, and to any special circumstances, which may render a departure from
the above rules necessary in order to avoid
immediate danger.”
In other words, follow the standard rules except when a collision will occur unless both
vessels try to avoid each other. If that is the
case, both vessels become “Give-Way” vessels.
EMU25520
Rules when encountering vessels
There are three main situations which you
may encounter with other vessels which
could lead to a collision unless the Steering
Rules are followed:
Meeting:
sel head-on)
Crossing:
er vessel’s path)
Overtaking:
passed by another vessel)
In the following illustration, your boat is in the
center. You should give the right-of-way to
any vessels shown in white area (you are the
(you are approaching another ves-
(you are traveling across the oth-
(you are passing or being
Give-Way vessel). Any vessels in the shaded area must yield to you (they are the GiveWay vessels). Both you and the meeting
vessel must alter course to avoid each other.
Meeting
If you are meeting another power vessel
head on, and are close enough to run the risk
of collision, neither of you has the right-ofway! Both of you should alter course to avoid
an accident. You should keep the other vessel 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 crossing
each other’s path close enough to run the
risk of collision, the vessel which has the other on the starboard (right) side must keep out
of the way of the other. If the other vessel is
on your right, you must keep out of its way;
you are the Give-Way vessel. If the other
6
General information
vessel is on your port (left) side, remember
that you should maintain course and direction, provided the other vessel gives you the
right-of-way as it should.
Overtaking
If you are passing another vessel, you are
the “Give-Way” vessel. This means that the
other vessel is expected to maintain its
course and speed. You must stay out of its
way until you are clear of it. Likewise, if another vessel is passing you, you should
maintain your speed and direction so that the
other vessel can steer itself around you.
EMU25530
Other special situations
There are three other rules you should be
aware of when driving your boat around other vessels.
Narrow channels and bends
When navigating in narrow channels, you
should keep to the right when it is safe and
practical to do so. If the operator of a powerdriven vessel is preparing to go around a
bend that may obstruct the view of other water vessels, the operator should sound a prolonged blast on the whistle (4 to 6 seconds).
If another vessel is around the bend, it too
should sound the whistle. Even if no reply is
heard, however, the vessel should still proceed around the bend with caution. If you
navigate such waters with your boat, you will
need to carry a portable air horn, available
from local marine supply stores.
Fishing vessel right-of-way
All vessels which are fishing with nets, lines
or trawls are considered to be “fishing vessels” under the International Rules. Vessels
with trolling lines are not considered fishing
vessels. Fishing vessels have the right-ofway regardless of position. Fishing vessels
cannot, however, impede the passage of
other vessels in narrow channels.
Sailing vessel right-of-way
Sailing vessels should normally be given the
right-of-way. The exceptions to this are:
1. When the sailing vessel is overtaking
the power-driven vessel, the power-driven 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 navigate only in such a channel.
Reading buoys and other markers
The waters of the United states are marked
for safe navigation by the lateral system of
buoyage. Simply put, buoys and markers
have an arrangement of shapes, colors,
numbers and lights to show which side of the
buoy a boater should pass on when navigating in a particular direction. The markings on
these buoys are oriented from the perspective of being entered from seaward (the boater is going towards the port). This means that
red buoys are passed on the starboard
(right) side when proceeding from open water into port, and black buoys are to port (left)
side. When navigating out of port, your position with respect to the buoys should be reversed; red buoys should be to port and
black buoys to starboard.
7
Many bodies of water used by boaters are
entirely within the boundaries of a particular
state. The Uniform State Waterway Marking
System has been devised for these waters.
This system uses buoys and signs with distinctive shapes and colors to show regulatory or advisory information. These markers
are white with black letters and orange
boarders. They signify speed zones, restricted areas, danger areas, and general information.
Remember, markings may vary by geographic location. Always consult local boating authorities before driving your boat in
unfamiliar waters.
General information
8
General information
EMU25540
Fueling instructions
EWM00010
WARNING
GASOLINE AND ITS VAPORS ARE HIGHLY FLAMMABLE AND EXPLOSIVE!
●
Do not smoke when refueling, and keep
9
ZMU01708
away from sparks, flames, or other
sources of ignition.
●
Stop engine before refueling.
●
Refuel in a well-ventilated area. Refuel
portable fuel tanks off the boat.
●
Take care not to spill gasoline. If gasoline spills, wipe it up immediately with
General information
dry rags.
●
Do not overfill the fuel tank.
Tighten the filler cap securely after re-
●
fueling.
●
If you should swallow some gasoline,
inhale a lot of gasoline vapor, or get
gasoline in your eyes, get immediate
medical attention.
If any gasoline spills onto your skin, im-
●
mediately wash with soap and water.
Change clothing if gasoline spills on it.
Touch the fuel nozzle to the filler open-
●
ing or funnel to help prevent electrostatic sparks.
ECM00010
CAUTION:
Use only new clean gasoline which has
been stored in clean containers and is not
contaminated with water or foreign matter.
EMU25570
Gasoline
If knocking or pinging occurs, use a different
brand of gasoline or premium unleaded fuel.
Recommended gasoline:
Regular unleaded gasoline with a minimum octane rating of 86 (Pump Octane Number) = (R+M)/2
EMU25660
Engine oil
Use Yamalube 2-M outboard oil. If Yamalube 2-M is not available, use only another outboard motor manufacturer’s factorybrand oil with TC-W3 rating.
Recommended engine oil:
YAMALUBE 2 STROKE OUTBOARD
OIL
ECM01290
CAUTION:
Serious engine damage can result from
the use of lower quality oil, including
some commonly available oil brands with
“TC-W3” on their label. To avoid the risk,
use only Yamalube 2-M or, if necessary,
another outboard motor manufacturer’s
factory-brand TC-W3 oil.
EMU25700
Battery requirement
ECM01060
CAUTION:
Do not use a battery that does not meet
the specified capacity. If a battery which
does not meet specifications is used, the
electric system could perform poorly or
be overloaded, causing electric system
damage.
Gasohol
There are two types of gasohol: gasohol containing ethanol and that containing methanol. Gasohol containing ethanol can be used
if ethanol content does not exceed 10% and
the fuel meets minimum octane ratings.
Yamaha does not recommended gasohol
containing methanol because it can cause
fuel system damage or engine performance
problems.
For electric start models, choose a battery
which meets the following specifications.
10
General information
EMU25711
Battery specifications
Minimum cold cranking amps (CCA/
SAE):
512.0 A
Minimum marine cranking amps (MCA/
ABYC):
675.0 A
Minimum reserve capacity (RC/SAE):
182 minutes
NOTE:
The engine cannot be started if battery voltage is too low.
EMU25741
Propeller selection
The performance of your outboard motor will
be critically affected by your choice of propeller, as an incorrect choice could adversely
affect performance and could also seriously
damage the motor. Engine speed depends
on the propeller size and boat load. If engine
speed is too high or too low for good engine
performance, this will have an adverse effect
on the engine.
Yamaha outboard motors are fitted with propellers chosen to perform well over a range
of applications, but there may be uses where
a propeller with a different pitch would be
more appropriate. For a greater operating
load, a smaller-pitch propeller is more suitable as it enables the correct engine speed
to be maintained. Conversely, a larger-pitch
propeller is more suitable for a smaller operating load.
Yamaha dealers stock a range of propellers,
and can advise you and install a propeller on
your outboard that is best suited to your application.
x
-
123
ZMU04607
1. Propeller diameter in inches
2. Propeller pitch in inches
3. Type of propeller (propeller mark)
NOTE:
Select a propeller which will allow the engine
to reach the middle or upper half of the operating range at full throttle with the maximum
boat load. If operating conditions such as
light boat loads then allow the engine r/min to
rise above the maximum recommended
range, reduce the throttle setting to maintain
the engine in the proper operating range.
For instructions on propeller removal and installation, see page 60.
EMU25770
Start-in-gear protection
Yamaha outboard motors or Yamaha-approved 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 the engine.
11
Basic components
BATT
YAMAHA
P S
EMU25795
Main components
NOTE:
* May not be exactly as shown; also may not be included as standard equipment on all models.
Z250D, LZ250D, Z300D, LZ300D
1
12
10
13 14 15
2
9
8
16 17 18
7
6
19 20 21
3
5
4
1. Top cowling
2. Top cowling lock lever(s)
3. Trim tab (anode)
4. Propeller*
5. Cooling water inlet
6. Anti-cavitation plate
7. Anode
8. Clamp bracket
9. Tilt support lever
10. Flushing device
11. Power trim and tilt switch
12. Cooling water pilot hole
13. Remote control box (side mount type)*
14. Remote control box (binnacle mount type)*
2
11
YAMAHA
SPEED
Km/h
knot
mph
km
mile
TRIP TIME BATT
set
mode
15. Switch panel (for use with binnacle type)*
16. Digital tachometer*
17. Digital speedometer*
18. Fuel management meter*
19. Tachomete*
20. Trim meter*
21. Remote oil tank*
EMU26180
Remote control
The remote control lever actuates both the
shifter and the throttle. The electrical switches are mounted on the remote control box.
YAMAHA
FUEL MANAGEMENT
ECON SYNCTTL
set
mode
I/h
gph
Km/L
mpg
ZMU04929
12
Basic components
1. Power trim and tilt switch
2. Remote control lever
3. Neutral interlock trigger
4. Neutral throttle lever
5. Main switch / choke switch
6. Engine stop lanyard switch
7. Throttle friction adjuster
1
2
4
2
3
ZMU04569
1. Remote control lever
2. Power trim and tilt switch
3. Free accelerator
4. Throttle friction adjuster
EMU26190
Remote control lever
Moving the lever forward from the neutral position engages forward gear. Pulling the lever back from neutral engages reverse. The
engine will continue to run at idle until the lever is moved about 35° (a detent can be felt).
Moving the lever farther opens the throttle,
and the engine will begin to accelerate.
1. Neutral “”
2. Forward “”
3. Reverse “”
4. Shift
5. Fully closed
6. Throttle
7. Fully open
N
F
2
6
1
4
R
4
3
6
5
5
7
7
ZMU04573
1. Neutral “”
2. Forward “”
3. Reverse “”
4. Shift
5. Fully closed
6. Throttle
7. Fully open
EMU26201
Neutral interlock trigger
To shift out of neutral, first pull the neutral interlock trigger up.
13
Basic components
erator button and move the remote control
lever.
2
3
1
1. Neutral interlock trigger
EMU26211
Neutral throttle lever
To open the throttle without shifting into either forward or reverse, put the remote control lever in the neutral position and lift the
neutral throttle lever.
NOTE:
The neutral throttle lever will operate only
when the remote control lever is in neutral.
The remote control lever will operate only
when the neutral throttle lever is in the closed
position.
1. Fully open
2. Fully closed
EMU26230
Free accelerator
To open the throttle without shifting into either forward or reverse, push the free accel-
ZMU04575
1. Fully open
2. Fully closed
3. Free accelerator
NOTE:
The free accelerator button can only be
●
used when the remote control lever is in
the neutral position.
After the button is pushed, the throttle be-
●
gins to open after the remote control lever
is moved at least 35°.
After using the free accelerator, return the
●
remote control lever to the neutral position.
The free accelerator button will return automatically to its set position. The remote
control will then engage forward and reverse normally.
EMU25970
Throttle friction adjuster
A friction device provides adjustable resistance to movement of the throttle grip or the
remote control lever, and can be set according to operator preference.
To increase resistance, turn the adjuster
clockwise. To decrease resistance, turn the
adjuster counterclockwise.
EWM00030
WARNING
Do not overtighten the friction adjuster. If
14
Basic components
there is too much resistance, it could be
difficult to move throttle lever or grip,
which could result in an accident.
ZMU04646
When constant speed is desired, tighten the
adjuster to maintain the desired throttle setting.
EMU25990
Engine stop lanyard switch
The lock plate must be attached to the engine stop switch for the engine to run. The
lanyard should be attached to a secure place
on the operator’s clothing, or arm or leg.
Should the operator fall overboard or leave
the helm, the lanyard will pull out the lock
plate, stopping ignition to the engine. This
will prevent the boat from running away under power.
EWM00120
WARNING
Attach the engine stop switch lanyard
●
to a secure place on your clothing, or
your arm or leg while operating.
Do not attach the lanyard to clothing
●
that could tear loose. Do not route the
lanyard where it could become entangled, preventing it from functioning.
●
Avoid accidentally pulling the lanyard
during normal operation. Loss of engine power means the loss of most
steering control. Also, without engine
power, the boat could slow rapidly. This
could cause people and objects in the
boat to be thrown forward.
NOTE:
The engine cannot be started with the lock
plate removed.
1. Lanyard
2. Lock plate
ON
ON
OFF
OFF
START
START
2
1
ZMU04564
1. Lanyard
15
Basic components
2. Lock plate
EMU26090
Main switch
The main switch controls the ignition system;
its operation is described below.
●
“”
(off)
With the main switch in the “” (off) posi-
tion, the electrical circuits are off, and the key
can be removed.
●
“”
(on)
With the main switch in the “” (on) posi-
tion, the electrical circuits are on, and the key
cannot be removed.
●
“”
With the main switch in the “” (start) po-
sition, the starter motor turns to start the engine. When the key is released, it returns
automatically to the “” (on) position.
(start)
EMU26141
Power trim and tilt switch on remote
control or tiller handle
The power trim and tilt system adjusts the
outboard motor angle in relation to the transom. Pressing the switch “” (up) trims the
outboard motor up, then tilts it up. Pressing
the switch “” (down) tilts the outboard mo-
tor down and trims it down. When the switch
is released, the outboard motor will stop in its
current position.
NOTE:
For instructions on using the power trim and
tilt switch, see pages 40 and 42.
OFF
ON
START
OFF
ON
START
ZMU04566
EMU26151
Power trim and tilt switch on bottom
engine cowling
The power trim and tilt switch is located on
the side of the bottom engine cowling. Pressing the switch “” (up) trims the outboard
motor up, then tilts it up. Pressing the switch
“” (down) tilts the outboard motor down
and trims it down. When the switch is released, the outboard motor will stop in its
current position.
EWM01030
WARNING
Use the power trim and tilt switch located
on the bottom engine cowling only when
the boat is at a complete stop with the engine off. Attempting to use this switch
16
Basic components
while the boat is moving could increase
the risk of falling overboard and could
distract the operator, increasing the risk
of collision with another boat or an obstacle.
UP
DN
ZMU01862
NOTE:
For instructions on using the power trim and
tilt switch, see page 42.
EMU26161
Power trim and tilt switches (twin
binnacle type)
The power trim and tilt system adjusts the
outboard motor angle in relation to the transom. Pushing the switch “” (up) trims the
outboard motor up, then tilts it up. Pressing
the switch “” (down) tilts the outboard mo-
tor down and trims it down. When the switch
is released, the outboard motor will stop in its
current position.
1
DN
NOTE:
●
On the dual engine control, the switch on
the remote control grip controls both outboard motors at the same time.
●
For instructions on using the power trim
and tilt switches, see pages 40 and 42.
EMU26240
Trim tab with anode
The trim tab should be adjusted so that the
steering control can be turned to either the
right or left by applying the same amount of
force.
EWM00840
WARNING
An improperly adjusted trim tab could
cause difficult steering. Always test run
after the trim tab has been installed or replaced to be sure steering is correct. Be
sure you have tightened the bolt after adjusting the trim tab.
If the boat tends to veer the left (port side),
turn the trim tab rear end to the port side “A”
in the figure. If the boat tends to veer the right
(starboard side), turn the trim tab end to the
starboard side “B” in the figure.
ECM00840
CAUTION:
The trim tab also serves as an anode to
protect the engine from electrochemical
corrosion. Never paint the trim tab as it
will become ineffective as an anode.
UP
1. Power trim and tilt switch
17
ZMU04601
1. Trim tab
2. Bolt
3. Cap
A
B
ZMU01863
EMU26340
Tilt support lever for power trim and
tilt or hydro tilt model
To keep the outboard motor in the tilted up
position, lock the tilt support lever to the
clamp bracket.
Basic components
EMU26382
Top cowling lock lever (pull up type)
To remove the engine top cowling, pull up
the lock lever(s) and lift off the cowling.
When installing the cowling, check to be sure
it fits properly in the rubber seal. Then lock
the cowling by moving the lever(s) downward.
1
ZMU04933
1. Top cowling lock lever(s)
1
1. Top cowling lock lever(s)
1
ZMU04934
ZMU01864
EMU26460
Flushing device
This device is used to clean the cooling water passages of the motor using a garden
hose and tap water.
NOTE:
For details on usage, see page 51.
18
Basic components
6
7
1
ZMU01866
1. Flushing device
EMU26470
Tachometer
This gauge shows the engine speed and has
the following functions.
1
2
ZMU04577
1. Tachometer
2. Oil level indicator
EMU26491
Digital tachometer
The tachometer shows the engine speed
and has the following functions.
NOTE:
All segments of the display will light momentarily after the main switch is turned on and
will return to normal thereafter.
1
2
3
5
8
1. Tachometer
2. Trim meter
3. Hour meter
4. Oil level indicator
5. Overheat warning indicator
6. Water separator warning indicator
7. Engine trouble warning indicator
8. Set button
9. Mode button
NOTE:
The water separator and engine trouble
warning indicators only operate when the engine is equipped with the appropriate functions.
EMU26540
Oil level indicators (three indicators)
The indicators on the gauge show the status
of the oil level. For details on how to read the
indicators, see page 35.
ECM00030
CAUTION:
Do not operate the engine without oil. Serious engine damage will occur.
4
9
ZMU01958
19
1. Oil level indicators
Basic components
page 26.
ECM00050
CAUTION:
Do not continue to run the engine if the
overheat warning indicator is on. Serious
engine damage will occur.
1
ZMU04580
EMU26550
Oil level indicator (digital type)
This indicator shows the engine oil level. If
the oil level falls below the lower limit, the
warning indicator will start to blink. For further information, see page 27.
ECM00030
CAUTION:
Do not operate the engine without oil. Serious engine damage will occur.
1
ZMU01867
1. Oil level indicator
EMU26581
Overheat warning indicator (digital
type)
If the engine temperature rises too high, the
warning indicator will start to blink. For further information on reading the indicator, see
1
ZMU01868
1. Overheat warning indicator
EMU26600
Speedometer (digital type)
This gauge shows the boat speed.
1. Speedometer
2. Fuel gauge
3. Trip meter/clock/voltmeter
4. Warning indicator(s)
NOTE:
After the main switch is first turned on, all
segments of the display come on as a test.
After a few seconds, the gauge will change
to normal operation. Watch the gauge when
20
Basic components
turning on the main switch to make sure all
segments come on.
NOTE:
The speedometer displays km/h, mph, or
knots, according to operator preference. Select the desired unit of measurement by setting the selector switch on the back of the
gauge. See the illustration for settings.
1. Cap
2. Selector switch (for speed unit)
3. Selector switch (for fuel sensor)
EMU26610
Trim meter
This gauge shows the trim angle of your outboard motor.
power trim and tilt switch.
EMU26620
Trim meter (digital type)
This meter shows the trim angle of your outboard motor.
NOTE:
●
Memorize the trim angles that work best
for your boat under different conditions.
Adjust the trim angle to the desired using
the power trim and tilt switch.
●
If the trim angle of your motor exceeds the
trim operating range, the top segment on
the trim meter display will blink.
ZMU01869
EMU26650
Hour meter (digital type)
This meter shows the number of hours the
engine has been run. It can be set to show
the total number of hours or the number of
hours for the current trip. The display can
also be turned on and off.
ZMU04581
NOTE:
Memorize the trim angles that work best for
your boat under different conditions. Adjust
the trim angle to the desired setting with the
21
ZMU01870
Basic components
●
Changing the display format
●
Pressing the “” (mode) button chang-
es the display format in the following pat-
tern:
●
Total hours→Trip hours→Display off
Resetting the trip hours
●
●
Simultaneously pressing the “” (set)
and “” (mode) buttons for more than
1 second while the trip hours are displayed
resets the trip counter to 0 (zero).
NOTE:
The total number of hours the engine has
been run cannot be reset.
EMU26690
EMU26700
Clock
Press the “” (mode) button repeatedly
until the indicator on the face of the gauge
points to “” (time). To set the clock, be
sure the gauge is in the “” (time) mode.
Press the “” (set) button; the hour display
will begin blinking. Press the “” (mode)
button until the desired hour is displayed.
Press the “” (set) button again, the minute
display will begin blinking. Press the “”
(mode) button until the desired minute is displayed. Press the “” (set) button again to
start the clock.
Trip meter
This gauge displays the distance the boat
has traveled since the gauge was last reset.
Press the “” (mode) button repeatedly
until the indicator on the face of the gauge
points to “” (trip). To reset the trip meter
to zero, press the “” (set) and “”
(mode) buttons at the same time.
NOTE:
●
The trip distance is shown in kilometers or
miles depending upon the unit of measure-
ment selected for the speedometer.
●
The trip distance is kept in memory by bat-
tery power. The stored data will be lost if
the battery is disconnected.
NOTE:
The clock operates on battery power. Disconnecting the battery will stop the clock.
Reset the clock after connecting the battery.
EMU26710
Fuel gauge
The fuel level is indicated by eight segments.
When all segments are showing, the fuel
tank is full.
ECM00860
CAUTION:
The Yamaha fuel tank sensor differs from
conventional sensors. Incorrectly setting
the selector switch on the gauge will give
false readings. Consult your Yamaha
dealer on how to correctly set the selec-
22
Basic components
tor switch.
NOTE:
The fuel level reading can be affected by the
position of the sensor in the fuel tank and the
attitude of the boat in the water. Operation
with bow-up trim or continuous turning can
give false readings.
ZMU01745
EMU26720
Fuel warning indicator
If the fuel level decreases to one segment,
the fuel level warning segment will begin to
blink.
ECM00880
CAUTION:
Do not continue to operate the engine
with full throttle if a warning device has
activated. Get back to the port within trolling engine speed.
EMU26730
Low battery voltage warning
indicator
If battery voltage drops, the display will automatically turn on and begin to blink.
ECM00870
CAUTION:
Get back to the port soon if a warning device has activated. For charging the battery, consult your Yamaha dealer.
1. Low battery indicator
EMU26740
Fuel management meter
The fuel management meter shows the state
of the fuel consumption while the engine is
running.
1. Fuel level warning segment
23
1
3
1. Fuel flow meter
2. Fuel consumption meter / Fuel economy
meter / Twin engine speed synchronizer
2
ZMU01748
Basic components
3. Water separator warning indicator (operates
only if the sensor has been installed)
NOTE:
After the main switch is first turned on, all
segments of the display come on as a test.
After a few seconds, the gauge will change
to normal operation. Watch the gauge when
turning on the main switch to make sure all
segments come on.
EMU26750
Fuel flow meter
The fuel flow meter displays the amount of
fuel flow over a one hour period, at the current rate of engine operation.
If twin engines are installed on your boat, the
fuel flow meter displays the total fuel flow of
both the port and starboard engines. It also
displays “” (for port and starboard).
ZMU01749
Use the “” (set) button to rotate the fuel
flow display in the following order:
●
Press the “” (set) button once to display
the fuel flow of the starboard engine. An
“” (for starboard) will also be displayed.
●
Press the “” (set) button a second time
to display the fuel flow of the port engine.
A “” (for port) will also be displayed.
●
Press the “” (set) button a third time to
return the display to the total fuel flow of
both engines. “” (for port and starboard)
will also be displayed to indicate both the
port and starboard engines.
NOTE:
●
The fuel flow meter displays gallons/hour
or liters/hour according to operator preference. Select the desired unit of measurement by setting the selector switch on the
back of the gauge during installation.
1. Selector switch
●
The fuel consumption meter and fuel
economy meter will indicate the same unit
of measurement.
EMU26760
Fuel consumption meter
This gauge displays the total amount of fuel
consumed since the gauge was last reset.
Press the “” (mode) button repeatedly
until the indicator on the face of the gauge
points to total “” (total). To reset the total
fuel consumption to zero, press the “”
(set) and “” (mode) buttons at the same
time.
24
Basic components
ZMU01751
EMU26770
Fuel economy
This gauge displays the distance per liter or
gallon when cruising, and is only for reference use by the operator.
Press the “” (mode) button repeatedly
until the indicator on the face of the gauge
points to “” (economy).
ZMU01752
NOTE:
If twin engines are installed on your boat, the
gauge will only display the total fuel economy
of both engines.
bottom, engine mounting height, skill of
the operator, and individual gasoline formulation (winter or summer fuel and
amount of additives).
●
The Yamaha digital speedometer and fuel
management meter calculates speed,
miles traveled, and fuel economy by water
movement at the stern of the boat. This
distance can vary greatly from the actual
distance traveled because of water currents, sea swells, and the condition of the
water speed sensor (partially plugged or
damaged).
●
Individual engines may slightly vary in their
fuel consumption due to manufacturing
variations. These variations can be even
greater if the engines are of different year
models. In addition, variations in propellers, even of the same basic dimensions of
the same design, can also cause a slight
variation in fuel consumption.
EMU26780
Twin-engine speed synchronizer
This gauge displays the difference in engine
speed (r/min) between the port and starboard engines for reference purposes when
synchronizing the two engines’ speeds.
Press the “” (mode) button repeatedly
until the indicator on the face of the gauge
points to “” (synchronizer).
NOTE:
Fuel consumption varies greatly with boat
●
design, weight, propeller used, engine trim
angle, sea conditions (including wind), and
throttle position. Fuel consumption also
varies slightly with the type of water (salt,
fresh, and contaminate levels), air temper-
ature and humidity, cleanliness of the boat
25
ZMU01753
1
2
3
4
5
ZMU01754
1. Port engine speed is higher
2. Port engine speed is slightly higher
3. Engine speed is synchronized evenly
between port and starboard engines
4. Starboard engine speed is slightly higher
5. Starboard engine speed is higher
NOTE:
If the two engines’ speeds are not synchronized while cruising, they can be synchronized by adjusting trim angle or throttle.
EMU26791
Water separator warning indicator
This indicator will blink when water has accumulated in the water separator. In such an
event, stop the engine and drain the water
from the separator.
NOTE:
This indicator only operates when a water
separator sensor is equipped.
Basic components
EMU26801
Warning system
ECM00090
CAUTION:
Do not continue to operate the engine if a
warning device has activated. Consult
your Yamaha dealer if the problem cannot be located and corrected.
EMU26823
Overheat warning (twin engines)
This engine has an overheat warning device.
If the engine temperature rises too high, the
warning device will activate.
Activation of warning device
●
The engine speed will automatically decrease to about 2000 r/min.
If equipped with an overheat warning indi-
●
cator, it will light.
ZMU01757
ZMU01755
The buzzer will sound.
●
ZMU04766
26
Basic components
OFF STARTONOFF START
If the warning system has activated, stop the
engine and check the cooling water inlet for
clogging.
ON
ZMU04584
on the engine not affected by overheating,
turn off the main switch of the engine overheating.
EMU26843
Oil level warning and oil filter clogging warning
Oil injection models
This engine has an oil level warning system.
If the oil level falls below the lower limit, the
warning system will activate.
Activation of warning device
Engine speed will automatically decrease
●
to about 2000 r/min.
●
The oil level warning indicator will light.
ZMU03942
ZMU02630
NOTE:
Dual engine drive users:
Should the overheat warning system of one
engine activate, the engine will slow down
and the buzzer will sound. This will cause the
other engine to slow down and the buzzer to
sound. To switch off the warning activation
27
●
The buzzer will sound.
ZMU04586
Basic components
ZMU03025
OFF STARTONOFF START
ON
ZMU04584
If the warning system has been activated,
stop the engine and check for the cause.
NOTE:
The warning for oil filter clogging is similar to
the warnings for low oil level and overheating. To make troubleshooting easier, check
for engine overheating first, then oil level,
and finally oil filter clogging.
1
1. Oil filter
ZMU01952
1. Oil filter
1
ZMU03987
28
Operation
EMU26901
Installation
ECM00110
CAUTION:
Incorrect engine height or obstructions
to smooth water flow (such as the design
or condition of the boat, or accessories
such as transom ladders or depth finder
transducers) can create airborne water
spray while the boat is cruising. Severe
engine damage may result if the motor is
operated continuously in the presence of
airborne water spray.
NOTE:
During water testing check the buoyancy of
the boat, at rest, with its maximum load.
Check that the static water level on the exhaust housing is low enough to prevent water entry into the powerhead, when water
rises due to waves when the outboard is not
running.
EMU26910
Mounting the outboard motor
EWM00820
WARNING
Overpowering a boat could cause se-
●
vere instability. Do not install an out-
board motor with more horsepower
than the maximum rating on the capac-
ity plate of the boat. If the boat does not
have a capacity plate, consult the boat
manufacturer.
●
The information presented in this sec-
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 boat and motor combination.
EWM00830
WARNING
Improper mounting of the outboard motor could result in hazardous conditions
such as poor handling, loss of control, or
fire hazards. Observe the following:
●
For permanently mounted models, your
dealer or other person experienced in
proper rigging should mount the motor.
If you are mounting the motor yourself,
you should be trained by an experienced person.
●
For portable models, your dealer or other person experienced in proper outboard motor mounting should show
you how to mount your motor.
Mount the outboard motor on the center line
(keel line) of the boat, and ensure that the
boat itself is well balanced. Otherwise the
boat will be hard to steer. For boats without
a keel or which are asymmetrical, consult
your dealer.
1
1. Center line (keel line)
ZMU01873
29
1. Center line (keel line)
EMU26930
Mounting height (boat bottom)
To run your boat at optimum efficiency, the
water resistance (drag) of the boat and outboard motor must be made as little as possible. The mounting height of the outboard
motor greatly affects the water resistance. If
the mounting height is too high, cavitation
tends to occur, thus reducing the propulsion;
and if the propeller tips cut the air, the engine
speed will rise abnormally and cause the engine to overheat. If the mounting height is too
low, the water resistance will increase and
thereby reduce engine efficiency. Mount the
outboard motor so that the anti-cavitation
plate is in alignment with the bottom of the
boat.
Operation
board motor is affected by the boat/motor
combination and the desired use. Test
runs at different heights can help determine the optimum mounting height. Consult your Yamaha dealer or boat
manufacturer for further information on determining the proper mounting height.
●
For instructions on setting the trim angle of
the outboard motor, see page 40.
EMU27041
Breaking in engine
Your new engine requires a period of breakin to allow mating surfaces of moving parts to
wear in evenly. Correct break-in will help ensure proper performance and longer engine
life.
ECM00750
CAUTION:
●
Failure to follow the break-in procedure
could result in reduced engine life or
even severe engine damage.
●
Do not use premixed fuel in this engine
because it could cause carbon deposits on the fuel injector and engine trouble.
●
Follow the instructions for break-in
carefully.
NOTE:
Leave the label pictured below on the top
cowling until the break-in procedure has
been completed. It may be removed afterwards.
ZMU01762
NOTE:
●
The optimum mounting height of the out-
30
Operation
ZMU01945
EMU27090
Procedure for HPDI models
Run the engine under load (in gear with a
propeller installed) as follows.
1. First 10 minutes:
Run the engine at the lowest possible
speed. A fast idle in neutral is best.
2. Next 50 minutes:
Do not exceed half throttle (approximately 3000 r/min). Vary engine speed
occasionally. If you have an easy-planing boat, accelerate at full throttle onto
plane, then immediately reduce the
throttle to 3000 r/min or less.
3. Second hour:
Accelerate at full throttle onto plane,
then reduce engine speed to three-quarter throttle (approximately 4000 r/min).
Vary engine speed occasionally. Run at
full throttle for one minute, then allow
about 10 minutes of operation at three-
quarter throttle or less to let the engine
cool.
4. Third through tenth hours:
Avoid operating at full throttle for more
than 5 minutes at a time. Let the engine
cool between full-throttle runs. Vary engine speed occasionally.
5. After the first 10 hours:
Operate the engine normally.
EMU27101
Preoperation checks
EWM00080
WARNING
If any item in the preoperation check is
not working properly, have it inspected
and repaired before operating the outboard motor. Otherwise an accident
could occur.
ECM00120
CAUTION:
Do not start the engine out of water. Overheating and serious engine damage can
occur.
EMU27110
Fuel
Check to be sure you have plenty of fuel
●
for your trip.
Make sure there are no fuel leaks or gaso-
●
line fumes.
●
Check fuel line connections to be sure they
are tight (if equipped Yamaha fuel tank or
boat tank).
●
Be sure the fuel tank is positioned on a secure, flat surface, and that the fuel line is
not twisted or flattened, or 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.
31
Operation
EMU27130
Controls
●
Check throttle, shift, and steering for proper operation before starting the engine.
●
The controls should work smoothly, without binding or unusual free play.
Look for loose or damaged connections.
●
●
Check operation of the starter and stop
switches when the outboard motor is in the
water.
EMU27150
Engine
●
Check the engine and engine mounting.
Look for loose or damaged fasteners.
●
●
Check the propeller for damage.
●
Check that the battery is in good condition
and the battery connections are secure.
EMU27221
Operation after a long period of
storage
When operating the engine after a long period (12 months) of storage, proceed as follows:
1. Start the engine. Leave it idling.
EWM00090
WARNING
●
Do not touch or remove electrical parts
when starting or during operation.
●
Keep hands, hair, and clothes away
from the flywheel and other rotating
parts while the engine is running.
of storage. Otherwise engine seizure
could occur.
Use straight gasoline only. If premix
●
fuel is used, the fuel injector could be
damaged.
ZMU01875
2. Watch for oil flowing through the oil feed
pipes. After any air in the oil lines has
been expelled, the oil injection system
should supply oil normally. If no oil is
flowing after 10 minutes of idling, consult
your Yamaha dealer.
ECM00560
CAUTION:
●
Be sure to take the above steps when
operating the engine after a long period
32
Operation
ZMU01876
EMU27233
Filling fuel and engine oil
EMU27270
Ring Free Fuel Additive
Gasoline is a precise blend of many different
substances, each chosen to give certain
characteristics. Gasoline blends have been
changing in recent years in response to concerns about pollution and resulting emissions regulations. One of the most obvious
changes has been the elimination of lead
from most fuels.
As gasoline has changed, the amount of additives such as aromatics and oxygenates
has increased. These additives are important for the engines in passenger cars, but
they can have detrimental effects in marine
engines, because of increased deposits in
the combustion chamber. When enough deposits collect, piston rings begin sticking.
Performance drops and engine wear increases dramatically.
While many additives available may reduce
deposits, Yamaha recommends the use of
Ring Free Fuel Additive
your Yamaha dealer.
tive
has repeatedly proven its ability to clean
, available from
Ring Free Fuel Addi-
combustion deposits from inside the engine,
notably the critical piston-ring-land area, and
fuel system components. Follow product labeling for use instructions.
EMU27291
Filling oil for oil injection models
EWM00530
WARNING
Do not add gasoline into the oil tank. Fire
or explosion could result.
This engine uses the Yamaha oil injection
system, which provides superior lubrication
by ensuring the proper oil ratio for all operating conditions. No fuel premixing is needed.
Simply pour gasoline into the fuel tank and
oil into the oil tank. Convenient indicators
show the status of the oil supply. For details
on how to read the indicators, see page 35.
To fill the engine oil tank, proceed as follows:
1. Pour engine oil into the remote oil tank.
Engine oil tank capacity:
10.5 L (11.10 US qt) (9.24 Imp.qt)
ZMU01877
NOTE:
The oil level lines on the remote oil tank indi-
33
cate the amount of additional oil that can be
added to the tank. The top oil level line indicates approximately 1.9 L (0.5 US gal, 0.4
Imp gal) can be added, and the bottom oil
level line indicates approximately 3.8 L (1 US
gal, 0.8 Imp gal) can be added.
2. Turn on the main switch. The Yamaha
oil injection system will automatically
feed oil from the remote oil tank to the
engine oil tank.
3. Operate the engine normally.
ECM00570
CAUTION:
When the engine is operated for the first
time or stored for a period of time, a minimum of 5 liters (5.3 US qt, 4.4 Imp qt) of
oil should be kept in the remote oil tank.
Otherwise the oil-feed pump chamber will
not be filled with oil, and no oil will be
supplied.
Operation
34
Operation
EMU27321
Oil level indicator operation
The various functions of the oil level system are as follows:
EMU27381
Oil level indicator
Electric start models
Oil level
warning
indicator
(digital
tachometer)
Oil level warning
indicator (analog
tachometer)
Green
Engine oil
tank
more than 300
cm3 (0.32 US
qt, 0.26 Imp
qt)
Remote oil
tank
more than
1500 cm3 (1.6
US qt, 1.31
Imp qt)
Remarks
●
No refilling necessary.
Yellow
Red–Yellow–
Green
Red
more than 300
cm3 (0.32 US
qt, 0.26 Imp
qt)
300 cm3 (0.32
US qt, 0.26
Imp qt) or less
300 cm3 (0.32
US qt, 0.26
Imp qt) or less
1500 cm3 (1.6
US qt, 1.31
Imp qt) or less
more than
1500 cm3 (1.6
US qt, 1.31
Imp qt)
1500 cm3 (1.6
US qt, 1.31
Imp qt) or less
●
Add oil; see page 33.
Check oil filter for clog-
●
ging.
Check battery cable
●
connection. Buzzer will
sound.
Engine speed is auto-
●
matically reduced to
about 2000 r/min.
●
Oil has not been added.
●
Buzzer will sound.
Engine speed is auto-
●
matically reduced to
about 2000 r/min.
Buzzer sounds in
●
remote control box and
engine speed is limited
to about 2000 r/min to
help conserve oil.
35
EMU27450
Operating engine
EMU27480
Feeding fuel
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.
●
When the air vent screw is loosened,
gasoline vapor will be released. Gasoline is highly flammable, and its vapors
are flammable and explosive. Refrain
from smoking, and keep away from
open flames and sparks while loosening the air vent screw.
●
This product emits exhaust gases
which contain carbon monoxide, a colorless, odorless gas which could cause
brain damage or death when inhaled.
Symptoms include nausea, dizziness,
and drowsiness. Keep cockpit and cabin areas well ventilated. Avoid blocking
exhaust outlets.
Operation
EMU27490
Starting engine
EMU27624
Electric start and remote control models
1. Place the remote control lever in “”
(neutral).
NOTE:
The start-in-gear protection device prevents
the engine from starting except when in neutral.
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 or a fuel cock on the
boat, firmly connect the fuel line to the
joint or open the fuel cock.
3. Squeeze the primer pump with the outlet
end up until you feel it become firm.
N
ZMU04588
2. Attach the engine stop switch lanyard to
36
Operation
a secure place on your clothing, or your
arm or leg. Then install the lock plate on
the other end of the lanyard into the engine stop switch.
EWM00120
WARNING
Attach the engine stop switch lanyard
●
to a secure place on your clothing, or
your arm or leg while operating.
Do not attach the lanyard to clothing
●
that could tear loose. Do not route the
lanyard where it could become entangled, preventing it from functioning.
●
Avoid accidentally pulling the lanyard
during normal operation. Loss of engine power means the loss of most
steering control. Also, without engine
power, the boat could slow rapidly. This
could cause people and objects in the
boat to be thrown forward.
3. Turn the main switch to “” (on).
NOTE:
Dual engine users: When the main switch is
turned on, the buzzer operates for a few seconds then stops automatically. The buzzer
also operates if one of the engines stalls.
ON
OFF
ZMU01880
OFF
ON
START
OFF
ON
START
37
OFF
ON
START
ON
START
OFF
ZMU04589
ZMU04566
4. Turn the main switch to “” (start),
and hold it for a maximum of 5 seconds.
5. Immediately after the engine starts, release the main switch to return it to “”
(on).
ECM00191
CAUTION:
●
Never turn the main switch to “”
(start) while the engine is running.
●
Do not keep the starter motor turning
for more than 5 seconds. If the starter
motor is turned continuously for more
than 5 seconds, the battery will be
quickly discharged, thus making it im-
Operation
possible to start the engine. The starter
can also be damaged. If the engine will
not start after 5 seconds of cranking,
return the main switch to “” (on), wait
10 seconds, then crank the engine
again.
ON
OFF
START
ZMU01881
ON
START
ZMU04590
EMU27670
Warming up engine
EMU27702
Electric start and prime start models
1. After starting the engine, allow it to idle
for 3 minutes to warm up. Failure to do
so will shorten engine life.
2. Check for a steady flow of water from the
cooling water pilot hole.
ECM00511
CAUTION:
A continuous flow of water from the cooling water pilot hole shows that the water
pump is pumping water through the cooling passages. If water is not flowing out
of the hole at all times while the engine is
running, overheating and serious damage could occur. Stop the engine and
check whether 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 corrected.
ZMU01882
EMU27740
Shifting
EWM00180
WARNING
Before shifting, make sure there are no
swimmers or obstacles in the water near
you.
ECM00220
CAUTION:
To change the boat direction or shifting
position from forward to reverse or viceversa, first close the throttle so that the
engine idles (or runs at low speeds).
EMU27763
Forward (tiller handle and remote
control models)
Tiller control models
1. Place the throttle grip in the fully closed
position.
2. Move the gear shift lever quickly and
firmly from neutral to forward.
Remote control models
38
Operation
1. Pull up the neutral interlock trigger (if
equipped) and move the remote control
lever quickly and firmly from neutral to
forward.
N
F
ZMU04597
EMU27784
Reverse (automatic reverse lock and
power trim and tilt models)
EWM00190
WARNING
When operating in reverse, go slowly. Do
not open the throttle more than half. Otherwise the boat could become unstable,
which could result in loss of control and
an accident.
equipped) and move the remote control
lever quickly and firmly from neutral to
reverse.
N
R
ZMU04598
EMU27820
Stopping engine
Before stopping the engine, first let it cool off
for a few minutes at idle or low speed. Stopping the engine immediately after operating
at high speed is not recommended.
EMU27851
Procedure
1. Turn the main switch to “” (off).
Tiller control models
1. Place the throttle grip in the fully closed
position.
2. Move the gear shift lever quickly and
firmly from neutral to reverse.
Remote control models
1. Pull up the neutral interlock trigger (if
39
ON
OFF
ON
OFF
ZMU04600
2. After stopping the engine, disconnect
the fuel line or close the fuel cock if there
is a fuel joint or a fuel cock on the boat.
3. Tighten the air vent screw on the fuel
tank cap (if equipped).
4. Remove the key if the boat will be left
unattended.
NOTE:
The engine can also be stopped by pulling
the lanyard and removing the clip from the
engine stop switch, then turning the main
switch to “” (off).
EMU27861
Trimming outboard motor
The trim angle of the outboard motor helps
determine the position of the bow of the boat
in the water. Correct trim angle will help improve performance and fuel economy while
reducing strain on the engine. Correct trim
angle depends upon the combination of
Operation
boat, engine, and propeller. Correct trim is
also affected by variables such as the load in
the boat, sea conditions, and running speed.
EWM00740
WARNING
Excessive trim for the operating conditions (either trim up or trim down) can
cause boat instability and can make
steering the boat more difficult. This increases 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.
1
ZMU01883
1. Trim operating angle
EMU27881
Adjusting trim angle
Power trim and tilt models
EWM00750
WARNING
●
Be sure all people are clear of the outboard motor when adjusting the tilt an-
40
Operation
gle, also be careful not to pinch any
body parts between the drive unit and
clamp bracket.
●
Use caution when trying a trim position
for the first time. Increase speed gradually and watch for any signs of instability or control problems. Improper trim
angle can cause loss of control.
Use the power tilt switch located on the
●
bottom engine cowling (if equipped)
only when the boat is at a complete
stop with the engine off.
Adjust the outboard motor trim angle using
the power trim and tilt switch.
1. Power trim and tilt switch
1
DN
UP
ZMU04601
1. Power trim and tilt switch
UP
1
DN
ZMU01944
1. Power trim and tilt switch
To raise the bow (trim-out), press the switch
“” (up).
To lower the bow (trim-in), press the switch
“” (down).
Make test runs with the trim set to different
angles to find the position that works best for
your boat and operating conditions.
NOTE:
To adjust the trim angle while the boat is
moving, use the power trim and tilt switch located on the remote control device or tiller
handle, if equipped.
EMU27911
Adjusting boat trim
When the boat is on plane, a bow-up attitude
results in less drag, greater stability and efficiency. This is generally when the keel line of
the boat is up about 3 to 5 degrees. With the
bow up, the boat may have a greater tendency to steer to one side or the other. Compensate for this as you steer. The trim tab can
also be adjusted to help offset this effect.
When the bow of the boat is down, it is easier
to accelerate from a standing start onto
plane.
41
Operation
Bow Up
Too much trim-out puts the bow of the boat
too high in the water. Performance and economy are decreased because the hull of the
boat is pushing the water and there is more
air drag. Excessive trim-out can also cause
the propeller to ventilate, which reduces performance further, and the boat may “por-
poise” (hop in the water), which could throw
the operator and passengers overboard.
Bow Down
Too much trim-in causes the boat to “plow”
through the water, decreasing fuel economy
and making it hard to increase speed. Operating with excessive trim-in at higher speeds
also makes the boat unstable. Resistance at
the bow is greatly increased, heightening the
danger of “bow steering” and making operation difficult and dangerous.
NOTE:
Depending on the type of boat, the outboard
motor trim angle may have little effect on the
trim of the boat when operating.
EMU27931
Tilting up and down
If the engine will be stopped for some time or
if the boat is moored in shallows, the outboard motor should be tilted up to protect the
propeller and casing from damage by collision with obstructions, and also to reduce
salt corrosion.
EWM00220
WARNING
Be sure all people are clear of the outboard motor when tilting up and down,
also be careful not to pinch any body
parts between the drive unit and engine
bracket.
EWM00250
WARNING
Leaking fuel is a fire hazard. If there is a
fuel joint on the outboard motor, disconnect the fuel line or close the fuel cock if
the engine will be tilted for more than a
few minutes. Otherwise fuel may leak.
ECM00241
CAUTION:
●
Before tilting the outboard motor, stop
the engine by following the procedure
42
Operation
on page 39. Never tilt the outboard motor while the engine is running. Severe
damage from overheating can result.
●
Do not tilt up the engine by pushing the
tiller handle (if equipped) because this
could break the handle.
EMU28005
Procedure for tilting up
Power trim and tilt models / power tilt models
1. Place the remote control lever / the gear
shift lever in neutral.
N
UP
ZMU03196
N
ZMU04588
2. Disconnect the fuel line from the outboard motor or close the fuel cock.
3. Press the power trim and tilt switch /
power tilt switch “” (up) until the out-
board motor has tilted up completely.
ZMU04602
UP
ZMU01954
4. Push the tilt support knob into the clamp
bracket or pull the tilt support lever toward you to support the engine.
43
ZMU01886
EWM00260
WARNING
After tilting the outboard motor, be sure
to support it with the tilt support knob or
tilt support lever. Otherwise the outboard
motor could fall back down suddenly if oil
in the power trim and tilt unit loses pressure.
5. Models equipped with trim rods: Once
the outboard motor is supported with the
tilt support lever, press the power trim
and tilt switch “” (down) to retract the
trim rods.
ECM00250
CAUTION:
Be sure to retract the trim rods completely during mooring. This protects the rods
from marine growth and corrosion which
could damage the power trim and tilt
mechanism.
Operation
EMU28052
Procedure for tilting down
Power trim and tilt models / power tilt models
1. Push the power tilt / power trim and tilt
switch “” (up) until the outboard motor
is supported by the tilt rod and the tilt
support lever / tilt support knob becomes
free.
2. Release the tilt support lever or pull out
the tilt support knob.
ZMU01885
3. Push the power tilt / power trim and tilt
switch “” (down) to lower the outboard
motor to the desired position.
UP
DN
DN
ZMU01884
ZMU01936
44
Operation
DN
ZMU04603
DN
ZMU01979
EMU28060
Cruising in shallow water
The outboard motor can be tilted up partially
to allow operation in shallow water.
EMU28090
Power trim and tilt models / power tilt
models
The outboard motor can be tilted up partially
to allow operation in shallow water.
EWM00660
WARNING
●
Place the gear shift in neutral before
setting up for shallow water cruising.
●
Return the outboard motor to its normal
position as soon as the boat is back in
deeper water.
ECM00260
CAUTION:
Do not tilt the outboard motor up so that
the cooling water inlet on the lower unit is
above the surface of the water when set-
ting up for and cruising in shallow water.
Otherwise severe damage from overheating can result.
EMU28184
Procedure for power trim and tilt / power
tilt models
1. Place the gear shift lever in neutral.
N
ZMU04588
2. Slightly tilt the outboard motor up to the
desired position using the power trim / tilt
switch.
UP
UP
DN
ZMU01935
45
UP
ZMU04602
UP
ZMU01954
3. To return the outboard motor to the normal running position, press the power
trim / tilt switch and slowly tilt the outboard motor down.
EMU28190
Cruising in other conditions
Cruising in salt water
After operating in salt water, wash out the
cooling water passages with fresh water to
prevent them from becoming clogged with
salt deposits.
NOTE:
For cooling system flushing instructions, see
page 48.
Operation
Cruising in turbid water
Yamaha strongly recommends that you use
the optional chromium-plated water pump kit
if you use the outboard motor in turbid (muddy) water conditions.
46
Maintenance
EMU28215
Specifications
Dimension:
Overall length:
868 mm (34.2 in)
Overall width:
568 mm (22.4 in)
Overall height X:
1830 mm (72.0 in)
Overall height U:
1957 mm (77.0 in)
Transom height X:
641 mm (25.2 in)
Transom height U:
768 mm (30.2 in)
Weight (without propeller) X:
247.0 kg (545 lb)
Weight (without propeller) U:
252.0 kg (556 lb)
Performance:
Full throttle operating range:
LZ250TR 4500–5500 r/min
LZ300TR 4650–5650 r/min
Z250TR 4500–5500 r/min
Z300TR 4650–5650 r/min
Maximum output:
LZ250TR 183.9 kW@5000 r/min
(250 HP@5000 r/min)
LZ300TR 220.7 kW@5150 r/min
(300 HP@5150 r/min)
Z250TR 183.9 kW@5000 r/min (250
HP@5000 r/min)
Z300TR 220.7 kW@5150 r/min (300
HP@5150 r/min)
Idling speed (in neutral):
LZ250TR 700 ±30 r/min
LZ300TR 730 ±30 r/min
Z250TR 700 ±30 r/min
Z300TR 730 ±30 r/min
Engine:
Type:
2-stroke V
Displacement:
3342.0 cm
Bore × stroke:
93.0 × 82.0 mm (3.66 × 3.23 in)
Ignition system:
TCI
Spark plug (NGK):
BKR6EKU
Spark plug gap:
1.5–1.6 mm (0.059–0.063 in)
Control system:
Remote control
Starting system:
Electric
Starting carburetion system:
Electronic fuel injection
Min. cold cranking amps (CCA/SAE):
512.0 A
Min. marine cranking amps (MCA/ABYC):
675.0 A
Min. reserve capacity (RC/SAE):
182 minutes
Alternator output for battery DC:
50.0 A
Drive unit:
Gear positions:
Forward-neutral-reverse
Gear ratio:
LZ250TR 1.81 (29/16)
LZ300TR 1.75 (28/16)
Z250TR 1.81 (29/16)
Z300TR 1.75 (28/16)
Trim and tilt system:
Power trim and tilt
Propeller mark:
LZ250TR TL / ML
LZ300TR TL / ML
Z250TR T / M
Z300TR T / M
Fuel and oil:
3
(203.93 cu.in)
47
Maintenance
Recommended fuel:
Regular unleaded gasoline
Min. pump octane:
86
Recommended engine oil:
YAMALUBE 2-stroke outboard motor
oil
Lubrication:
Oil injection
Engine oil tank capacity:
1.2 L (1.27 US qt) (1.06 Imp.qt)
Remote oil tank capacity:
10.5 L (11.10 US qt) (9.24 Imp.qt)
Recommended gear oil:
Hypoid gear oil SAE#90
Gear oil quantity:
LZ250TR 1000.0 cm
3
(33.81 US oz)
(35.27 Imp.oz)
LZ300TR 1000.0 cm
3
(33.81 US oz)
(35.27 Imp.oz)
Z250TR 1150.0 cm3 (38.88 US oz)
(40.56 Imp.oz)
Z300TR 1150.0 cm
3
(38.88 US oz)
(40.56 Imp.oz)
Tightening torque for engine:
Spark plug:
25.0 Nm (18.4 ft-lb) (2.55 kgf-m)
Propeller nut:
54.0 Nm (39.8 ft-lb) (5.51 kgf-m)
EMU28222
Transporting and storing
outboard motor
EWM00690
WARNING
●
Leaking fuel is a fire hazard. When
transporting and storing the outboard
motor, close the air vent screw and fuel
cock to prevent fuel from leaking.
●
USE CARE when transporting fuel tank,
whether in a boat or car.
●
DO NOT fill fuel container to maximum
capacity. Gasoline will expand considerably as it warms up and can build up
pressure in the fuel container. This can
cause fuel leakage and a potential fire
hazard.
EWM00700
WARNING
Never get under the lower unit while it is
tilted, even if a motor support bar is used.
Severe injury could occur if the outboard
motor accidentally falls.
ECM00660
CAUTION:
Do not use the tilt support lever or knob
when trailering the boat. The outboard
motor could shake loose from the tilt support and fall. If the motor cannot be trailered 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
is insufficient road clearance in this position,
then trailer the outboard motor in the tilt position using a motor support device such as
a transom saver bar. Consult your Yamaha
dealer for further details.
ZMU04720
EMU28250
Storing outboard motor
When storing your Yamaha outboard motor
48
Maintenance
for prolonged periods of time (2 months or
longer), several important procedures must
be performed to prevent excessive damage.
This is especially important for your oil injection equipped outboard motor due to the lean
oil ratios used at idle prior to shutting the engine off for the season. It is advisable to have
your outboard motor serviced by an authorized Yamaha dealer prior to storage. However, you, the owner, with a minimum of
tools, can perform the following procedures.
ECM01070
CAUTION:
Do not use any chemical goods containing Silicon, Phosphorus, or Lead. Otherwise the oxygen sensor for the Electronic
Fuel Injection system could be damaged.
Consult your Yamaha dealer for details
on the use of chemical goods for storage.
EMU28301
Procedure
EMU30001
Flushing with the flushing attachment
1. Wash the outboard motor body using
fresh water. For further information, see
page 52.
2. Fill the fuel tank with fresh fuel and add
one ounce of “Yamaha Fuel Conditioner
and Stabilizer” (Part No. LUB-FUELC12-00) to each gallon of fuel.
NOTE:
The use of “Yamaha Fuel Conditioner and
Stabilizer” eliminates the need to drain the
fuel system. Consult your Yamaha dealer or
other qualified mechanic if the fuel system is
to be drained instead.
3. Remove the top cowling and propeller.
4. Install the flushing attachment over the
cooling water inlet.
ECM00300
CAUTION:
Do not run the engine without supplying
it with cooling water. Either the engine
water pump will be damaged or the engine will be damaged from overheating.
Before starting the engine, be sure to
supply water to the cooling water passages.
ECM00310
CAUTION:
Avoid running the outboard motor at high
speed while on the flushing attachment,
otherwise overheating could occur.
1. Flushing attachment
5. Cooling system flushing is essential to
prevent the cooling system from clogging up with salt, sand, or dirt. In addition, fogging/lubricating of the engine is
mandatory to prevent excessive engine
damage due to rust. Perform the flushing and fogging at the same time.
EWM00090
WARNING
Do not touch or remove electrical parts
●
when starting or during operation.
●
Keep hands, hair, and clothes away
from the flywheel and other rotating
49
Maintenance
parts while the engine is running.
NOTE:
●
When using the flushing attachment,
maintain adequate water pressure and a
steady water flow.
●
If the overheat warning device is activated,
turn the engine off, and consult your
Yamaha dealer.
6. Run the engine at a fast idle for a few
minutes in neutral position while supplying fresh water.
7. Just prior to turning off the engine, quickly spray “Yamaha Stor-Rite Engine
Fogging Oil” (Part No. LUB-STRRT-12-
00) alternately into the intake silencer or
the fogging hole of the silencer cover, if
equipped. When properly done, the engine will smoke excessively and almost
stall.
8. Remove the flushing attachment and
wipe off any excess water.
9. Install the top cowling and propeller.
10. Drain the cooling water completely out
of the motor. Clean the body thoroughly.
NOTE:
A flushing attachment is available from your
Yamaha dealer.
EMU28410
Lubrication (oil injection models)
1. Grease the spark plug threads and install the spark plug(s) and torque to
proper specification. For information on
spark plug installation, see page 55.
2. Fill the oil tanks. This prevents the formation of condensation. For models with
a remote oil tank, it may be necessary to
manually override the control unit to
completely fill the engine oil tank.
3. Change the gear oil. For instructions,
see page 62. Inspect the oil for the pres-
ence of water which indicates a leaky
seal. Seal replacement should be performed by an authorized Yamaha dealer
prior to use.
4. Grease all grease fittings. For further details, see page 55.
EMU30261
Cleaning and anticorrosion
measures
1. Wash down the exterior of the outboard
motor with fresh water and dry off completely.
2. Spray the outboard motor exterior with
“Yamaha Silicone Protectant” (Part No.
LUB-SILCNE-13-00).
ECM01401
CAUTION:
Do not spray when the engine is running.
Also, do not spray near the silencer or
into the engine. Otherwise the engine
could be damaged.
3. Wax the cowling with a non-abrasive
wax such as “Yamaha Silicone Wax”
(Part No. ACC-11000-15-02).
EMU28430
Battery care
EWM00330
WARNING
Battery electrolytic fluid is dangerous; it
contains sulfuric acid and therefore is
poisonous and highly caustic.
Always follow these preventive measures:
●
Avoid bodily contact with electrolytic
fluid as it can cause severe burns or
permanent eye injury.
●
Wear protective eye gear when handling or working near batteries.
Antidote (EXTERNAL):
●
SKIN - Flush with water.
●
EYES - Flush with water for 15 minutes
50
Maintenance
and get immediate medical attention.
Antidote (INTERNAL):
Drink large quantities of water or milk
●
followed by milk of magnesia, beaten
egg, or vegetable oil. Get immediate
medical attention.
Batteries also generate explosive hydrogen gas; therefore, you should always
follow these preventive measures:
●
Charge batteries in a well-ventilated ar-
ea.
Keep batteries away from fire, sparks,
●
or open flames (for example: welding
equipment, lighted cigarettes, and so
on.)
●
DO NOT SMOKE when charging or han-
dling batteries.
KEEP BATTERIES AND ELECTROLYTIC
FLUID OUT OF REACH OF CHILDREN.
Batteries vary among manufacturers. Therefore the following procedures may not always apply. Consult your battery
manufacturer’s instructions.
Procedure
1. Disconnect and remove the battery from
the boat. Always disconnect the black
negative cable first to prevent the risk of
shorting.
2. Clean the battery casing and terminals.
Fill each cell to the upper level with distilled water.
3. Store the battery on a level surface in a
cool, dry, well-ventilated place out of direct sunlight.
4. Once a month, check the specific gravity
of the electrolyte and recharge as required to prolong battery life.
EMU28440
Flushing power unit
Perform this procedure right after operation
for the most thorough flushing.
1. After shutting off the engine, unscrew
the garden hose connector from the fitting on the bottom cowling.
1
2
3
ZMU01889
1. Fitting
2. Garden hose connector
3. Garden hose
2. Screw the garden hose connector onto a
garden hose which is connected to a
fresh water supply.
3. With the engine off, turn on the water tap
and let the water flush through the cooling passages for about 15 minutes. Turn
off the water and disconnect the garden
hose.
4. When flushing is complete, reinstall the
garden hose connector on the fitting on
the bottom cowling. Tighten the connector securely.
ECM00540
CAUTION:
Do not leave the garden hose connector
51
Maintenance
loose on the bottom cowling fitting or let
the hose hang free during normal operation. Water will leak out of the connector
instead of cooling the engine, which can
cause serious overheating. Be sure the
connector is tightened securely on the fitting after flushing the engine.
NOTE:
●
When flushing the engine with the boat in
the water, tilting up the outboard motor until it is completely out of the water will
achieve better results.
●
For cooling system flushing instructions,
see page 48.
EMU28450
Cleaning the outboard motor
After use, wash the exterior of the outboard
motor with fresh water. Flush the cooling
system with fresh water.
ZMU02550
NOTE:
For cooling system flushing instructions, see
page 48.
EMU28460
Checking painted surface of motor
Check the motor for scratches, nicks, or flaking paint. Areas with damaged paint are
more likely to corrode. If necessary, clean
and paint the areas. A touch-up paint is available from your Yamaha dealer.
EMU28483
Periodic maintenance
EWM01070
WARNING
Be sure to turn off the engine when you
perform maintenance unless otherwise
specified. If you or the owner is not familiar with machine servicing, this work
should be done by your Yamaha dealer or
other qualified mechanic.
Maintenance, replacement, or repair of
the emission control devices and systems may be performed by any marine
engine repair establishment or individual.
All warranty repairs, however, including
those to the emission control system,
must be performed by an authorized
Yamaha marine dealership.
A service manual is available for purchase
through your Yamaha dealer for owners who
have the mechanical skills, tools, and other
equipment necessary to perform maintenance not covered by this owner’s manual.
EMU28510
Replacement parts
If replacement parts are necessary, use only
genuine Yamaha parts or parts of the same
type and of equivalent strength and materials. Any part of inferior quality may malfunction, and the resulting loss of control could
endanger the operator and passengers.
Yamaha genuine parts and accessories are
available from your Yamaha dealer.
52
Maintenance
EMU28521
Maintenance chart
Frequency of maintenance operations may be adjusted according to the operating conditions, but the following table gives general guidelines. Refer to the sections in this chapter for
explanations of each owner-specific action.
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
Item Actions
Anode(s) (external)
Anode(s) (internal)
Battery Inspection / charging
Cooling water passages
Cowling clamp Inspection
Fuel filter (can be disassembled)
Fuel system Inspection
Gear oil Change
Greasing points Greasing
Idling speed (EFI models)
PCV (Pressure Control Valve)
Power trim and tilt unit Inspection
Propeller and cotter pin
Shift link / shift cable Inspection / adjustment
Thermostat Inspection
Throttle link / throttle
cable / throttle pick-up
timing
Throttle position sensor
Water pump Inspection
High pressure fuel
pump drive belt
Inspection / replacement
Inspection / replacement
Cleaning
Inspection / replacement
Inspection / adjustment
Inspection
Inspection / replacement
Inspection / adjustment
Inspection / adjustment
Inspection / replacement
10 hours
(1 month)
50 hours
(3
months)
100
hours (6
months)
200
hours (1
year)
53
Maintenance
Initial Every
Item Actions
High pressure fuel
pump oil level
Oil pump Inspection / adjustment
Oil tank water drain Inspection / cleaning
Spark plug(s)
Inspection / filling
Cleaning / adjustment /
replacement
10 hours
(1 month)
50 hours
(3
months)
NOTE:
When operating in salt water, turbid or muddy water, the engine should be flushed with clean
water after each use.
EMU28871
Maintenance chart (additional)
Item Actions
High pressure fuel
pump drive belt
Replacement
500 hours (2.5 years) 1000 hours (5 years)
Every
100
hours (6
months)
200
hours (1
year)
54
Maintenance
EMU28931
Greasing
Yamaha marine grease (Water resistant grease)
Z250D, LZ250D, Z300D, LZ300D
EMU28951
Cleaning and adjusting spark plug
EWM00560
WARNING
When removing or installing a spark plug,
be careful not to damage the insulator. A
damaged insulator could allow external
55
ZMU01939
sparks, which could lead to explosion or
fire.
The spark plug is an important engine component and is easy to inspect. The condition
of the spark plug can indicate something
about the condition of the engine. For exam-
Maintenance
ple, if the center electrode porcelain is very
white, this could indicate an intake air leak or
carburetion problem in that cylinder. Do not
attempt to diagnose any problems yourself.
Instead, take the outboard motor to a
Yamaha dealer. You should periodically remove and inspect the spark plug because
heat and deposits will cause the spark plug
to slowly break down and erode. If electrode
erosion becomes excessive, or if carbon and
other deposits are excessive, you should replace the spark plug with another of the correct type.
Standard spark plug:
BKR6EKU
Before fitting the spark plug, measure the
electrode gap with a wire thickness gauge;
adjust the gap to specification if necessary.
1
2
1. Spark plug gap
2. Spark plug I.D. mark (NGK)
Spark plug gap:
1.5–1.6 mm (0.059–0.063 in)
1
ZMU01892
spark plug to the correct torque.
Spark plug torque:
25.0 Nm (18.4 ft-lb) (2.55 kgf-m)
NOTE:
If a torque-wrench is not available when you
are fitting a spark plug, a good estimate of
the correct torque is 1/4 to 1/2 a turn past finger-tight. Have the spark plug adjusted to the
correct torque as soon as possible with a
torque-wrench.
EMU28962
Checking fuel system
EWM00060
WARNING
Gasoline and its vapors are highly flammable and explosive. Keep away from
sparks, cigarettes, flames, or other
sources of ignition.
EWM00910
WARNING
Leaking fuel can result in fire or explosion.
●
Check for fuel leakage regularly.
●
If any fuel leakage is found, the fuel
system must be repaired by a qualified
mechanic. Improper repairs can make
the outboard unsafe to operate.
Check the fuel lines for leaks, crack, or malfunction. If a problem is found, your Yamaha
dealer or other qualified mechanic should repair it immediately.
When fitting the plug, always clean the gasket surface and use a new gasket. Wipe off
any dirt from the threads and screw in the
56
Maintenance
ZMU01853
●
Fuel line joint leakage
●
Fuel line cracks or other damage
Fuel connector leakage
●
EMU28980
Inspecting fuel filter
EWM00310
WARNING
Gasoline is highly flammable, and its vapors are flammable and explosive.
●
If you have any question about properly
doing this procedure, consult your
Yamaha dealer.
●
Do not perform this procedure on a hot
or running engine. Allow the engine to
cool.
●
There will be fuel in the fuel filter. Keep
away from sparks, cigarettes, flames or
other sources of ignition.
●
This procedure will allow some fuel to
spill. Catch fuel in a rag. Wipe up any
spilled fuel immediately.
●
The fuel filter must be reassembled
carefully with the O-ring, filter cup, and
hoses in place. Improper assembly or
replacement could result in a fuel leak,
which could result in a fire or explosion
hazard.
EMU29012
Cleaning fuel filter
1. Lift up and hold the locking tab to loosen
the filter cup ring nut.
Checkpoints
Fuel system parts leakage
●
57
ZMU01955
1
2
1. Locking tab
2. Float
2. Remove the filter cup, catching any
spilled fuel in a rag.
3. Remove the filter element, and wash it in
solvent. Allow it to dry. Inspect the filter
element and O-ring to make sure they
are in good condition. Replace them if
necessary. If any water is found in the
fuel, the Yamaha portable fuel tank or
other fuel tanks should be checked and
cleaned.
4
3
ZMU04005
6
5
2
1
1. Filter cup ring nut
2. Float
3. Filter cup
4. O-ring
5. Filter element
6. Filter housing
4. Reinstall the filter element in the cup.
ZMU04836
Maintenance
Make sure the O-ring is in position in the
cup. Insert the cup and O-ring into the filter housing. Lift up and hold the locking
tab to screw the ring nut onto the filter
housing until the ring is lightly seated.
5. Tighten the ring nut approximately an
additional 1/4 turn until the ring nut is
tight. Align one of the four larger ring nut
tabs with the locking tab and release it to
lock the ring nut in position.
6. Run the engine and check the filter and
lines for leaks.
NOTE:
If any water is in the fuel, the red ring in the
fuel filter unit will float. If so, remove the cup
and drain the water.
EMU29040
Inspecting idling speed
EWM00450
WARNING
●
Do not touch or remove electrical parts
when starting or during operation.
●
Keep hands, hair, and clothes away
from the flywheel and other rotating
parts while the engine is running.
●
2-hp models
whenever the engine is running. Do not
move the throttle control lever from the
start position during warm-up. The boat
could unexpectedly start to move,
which could result in an accident.
ECM00490
CAUTION:
This procedure must be performed while
the outboard motor is in the water. A
flushing 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
: The propeller rotates
58
Maintenance
flushing attachment, in a test tank, or with the
outboard motor in the water.
1. Start the engine and allow it to warm up
fully in neutral until it is running smoothly.
2-hp model: Warm the engine with the
throttle in the start position or less. If the
outboard is mounted on a boat, be sure
the boat is tightly moored.
NOTE:
Correct idling speed inspection is only possible if the engine is fully warmed up. If not
warmed up fully, the idle speed will measure
higher than normal. If you have difficulty verifying the idle speed, or the idle speed requires adjustment, consult a Yamaha dealer
or other qualified mechanic.
2. Verify whether the idle speed is set to
specification. For idle speed specifications, see page 47.
EMU29050
Checking water in engine oil tank
Oil injection models
There is a water trap at the bottom of the engine oil tank. If water or foreign matter is visible in this trap, consult your Yamaha dealer.
2
1
ZMU01895
1. Water trap
2. Engine oil tank
EMU29111
Checking wiring and connectors
●
Check that each grounding wire is properly
secured.
●
Check that each connector is engaged securely.
ZMU04007
EMU29120
Exhaust leakage
Start the engine and check that no exhaust
leaks from the joints between the exhaust
cover, cylinder head, and body cylinder.
EMU29130
Water leakage
Start the engine and check that no water
leaks from the joints between the exhaust
cover, cylinder head, and body cylinder.
EMU29153
Checking power trim and tilt system
EWM00430
WARNING
●
Never get under the lower unit while it
is tilted, even when the tilt support lever
is locked. Severe injury could occur if
the outboard motor accidentally falls.
●
Make sure no one is under the outboard
motor before performing this test.
1. Check the power trim and tilt unit for any
sign of oil leaks.
2. Operate each of the power trim and tilt
switches on the remote control and engine bottom cowling (if equipped) to
59
check that all switches work.
3. Tilt the outboard motor up and check
that the tilt rod and trim rods are extended completely.
2
Maintenance
1
3
1. Tilt rod
2. Tilt support lever
3. Trim rods
4. Use the tilt support lever to lock the motor in the up position. Operate the tilt
down switch briefly so the motor is supported by the tilt support lever.
ZMU01940
1
ZMU04935
1. Tilt support lever
5. Check that the tilt rod and trim rods are
free of corrosion or other flaws.
6. Activate the tilt-down switch until the trim
rods have retracted completely into the
cylinders.
ZMU01941
7. Activate the trim-up switch until the tilt
rod is fully extended. Unlock the tilt support lever.
ZMU04936
8. Tilt the outboard motor down. Check
that the tilt rod and trim rods operate
smoothly.
NOTE:
Consult your Yamaha dealer if any operation
is abnormal.
EMU29171
Checking propeller
EWM00321
WARNING
You could be seriously injured if the engine accidentally starts when you are
near the propeller.
●
Before inspecting, removing, or installing the propeller, remove the spark
plug caps from the spark plugs. Also,
place the shift control in neutral, turn
60
Maintenance
the main switch to “” (off) and re-
move the key, and remove the lanyard
from the engine stop switch. Turn off
the battery cut-off switch if your boat
has one.
Do not use your hand to hold the pro-
●
peller when loosening or tightening the
propeller nut. Put a wood block between the anti-cavitation plate and the
propeller to prevent the propeller from
turning.
ZMU01896
Check the propeller shaft oil seal for dam-
●
age.
NOTE:
If the shear pin equipped: it is designed to
break if the propeller hits a hard underwater
obstacle to help protect the propeller and
drive mechanism. The propeller will then
spin freely on the shaft. If this happens, the
shear pin must be replaced.
EMU29193
Removing the propeller
1. Straighten the cotter pin and pull it out
using a pair of pliers.
2. Remove the propeller nut, washer, and
spacer (if equipped).
ZMU01897
Checkpoints
Check each of the propeller blades for
●
wear, erosion from cavitation or ventilation, or other damage.
Check the propeller shaft for damage.
●
●
Check the splines / shear pin for wear or
damage.
Check for fish line tangled around the pro-
●
peller shaft.
61
1. Cotter pin
2. Propeller nut
3. Washer
4. Spacer
5. Propeller
6. Thrust washer
1
2
3
4
5
6
ZMU01898
3. Remove the propeller and thrust washer.
EMU29240
Installing the propeller
EWM00770
WARNING
On counter rotation models, be sure to
use a propeller intended for counterclockwise rotation. These propellers are
identified with the letter “L” after the size
indication on the propeller. Otherwise the
boat could move in the opposite direction
from that expected.
ECM00340
CAUTION:
●
Be sure to install the thrust washer before installing the propeller, otherwise
the lower case and propeller boss
could be damaged.
●
Be sure to use a new cotter pin and
bend the ends over securely. Otherwise
the propeller could come off during operation and be lost.
1. Apply Yamaha marine grease or a corrosion resistant grease to the propeller
shaft.
2. Install the thrust washer and propeller
on the propeller shaft.
3. Install the spacer and washer. Tighten
the propeller nut to the specified torque.
4. Align the propeller nut with the propeller
shaft hole. Insert a new cotter pin in the
hole and bend the cotter pin ends.
Maintenance
ZMU02063
NOTE:
If the propeller nut does not align with the
propeller shaft hole after tightening to the
specified torque, tighten the nut further to
align it with the hole.
EMU29280
Changing gear oil
EWM00800
WARNING
●
Be sure the outboard motor is securely
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 accidentally falls.
1. Tilt the outboard motor so that the gear
oil drain screw is at the lowest point possible.
2. Place a suitable container under the
gear case.
3. Remove the gear oil drain screw.
62
Maintenance
2
1
ZMU01899
1. Gear oil drain screw
2. Oil level plug
NOTE:
If the magnetic gear oil drain screw
equipped: remove all metal particles from
the screw before installing it.
4. Remove the oil level plug to allow the oil
to drain completely.
ECM00710
CAUTION:
Inspect the used oil after it has been
drained. If the oil is milky, water is getting
into the gear case which can cause gear
damage. Consult a Yamaha dealer for repair of the lower unit seals.
NOTE:
For disposal of used oil consult your Yamaha
dealer.
5. With the outboard motor in a vertical position, and using a flexible or pressurized filling device, inject the gear oil into
the gear oil drain screw hole.
Recommended gear oil:
Hypoid gear oil SAE#90
Gear oil quantity:
LZ250TR 1000.0 cm
3
(33.81 US oz)
(35.27 Imp.oz)
LZ300TR 1000.0 cm
3
(33.81 US oz)
(35.27 Imp.oz)
Z250TR 1150.0 cm3 (38.88 US oz)
(40.56 Imp.oz)
Z300TR 1150.0 cm
3
(38.88 US oz)
(40.56 Imp.oz)
ZMU01900
6. When the oil begins to flow out of the oil
level plug hole, insert and tighten the oil
level plug.
7. Insert and tighten the gear oil drain
screw.
EMU29312
Inspecting and replacing anode(s)
Yamaha outboard motors are protected from
corrosion by sacrificial anodes. Inspect the
external anodes periodically. Remove scales
from the surfaces of the anodes. Consult a
Yamaha dealer for replacement of external
anodes.
ECM00720
CAUTION:
Do not paint anodes, as this would render
them ineffective.
63
Maintenance
NOTE:
Inspect ground leads attached to external
anodes on equipped models. Consult a
Yamaha dealer for inspection and replacement of internal anodes attached to the power unit.
ZMU01901
ZMU01902
EMU29320
Checking battery (for electric start models)
EWM00330
WARNING
Battery electrolytic fluid is dangerous; it
contains sulfuric acid and therefore is
poisonous and highly caustic.
Always follow these preventive measures:
●
Avoid bodily contact with electrolytic
fluid as it can cause severe burns or
permanent eye injury.
●
Wear protective eye gear when han-
dling or working near batteries.
Antidote (EXTERNAL):
SKIN - Flush with water.
●
●
EYES - Flush with water for 15 minutes
and get immediate medical attention.
Antidote (INTERNAL):
●
Drink large quantities of water or milk
followed by milk of magnesia, beaten
egg, or vegetable oil. Get immediate
medical attention.
Batteries also generate explosive hydrogen gas; therefore, you should always
follow these preventive measures:
●
Charge batteries in a well-ventilated ar-
ea.
●
Keep batteries away from fire, sparks,
or open flames (for example: welding
equipment, lighted cigarettes, and so
on.)
●
DO NOT SMOKE when charging or han-
dling batteries.
KEEP BATTERIES AND ELECTROLYTIC
FLUID OUT OF REACH OF CHILDREN.
ECM00360
CAUTION:
●
A poorly maintained battery will quickly
deteriorate.
●
Ordinary tap water contains minerals
harmful to a battery, and should not be
used for topping up.
1. Check the electrolyte level at least once
a month. Fill to the manufacturer’s recommended level when necessary. Top
up only with distilled water (or pure deionized water suitable to use in batteries).
64
Maintenance
2. Always keep the battery in a good state
of charge. Installing a voltmeter will help
you monitor your battery. If you will not
use the boat for a month or more, remove the battery from the boat and store
it in a cool, dark place. Completely recharge the battery before using it.
3. If the battery will be stored for longer
than a month, check the specific gravity
of the fluid at least once a month and recharge the battery when it is low.
NOTE:
Consult a Yamaha dealer when charging or
re-charging batteries.
EMU29361
Connecting the Battery
EWM00570
WARNING
Mount the battery holder securely in a
dry, well-ventilated, vibration-free location in the boat. Install a fully charged battery in the holder.
ECM01121
CAUTION:
●
Make sure the main switch (on applicable models) is “” (off) before work-
ing on the battery.
●
Reversal of the battery cables will damage the electrical parts.
●
Connect the red battery cable first
when installing the battery and disconnect the black battery cable first when
removing it. Otherwise, the electrical
parts can be damaged.
●
The electrical contacts of the battery
and cables must be clean and properly
connected, or the battery will not start
the engine.
Connect the RED lead to the POSITIVE (+)
terminal first. Then connect the BLACK lead
to the NEGATIVE (-) terminal.
1. Red cable
2. Black cable
3. Battery
Connecting an accessory battery (option)
1. Remove the accessory battery coupler
cover from the outboard motor.
2. Connect the accessory battery coupler
to the coupler of the accessory battery
lead (option). Use a connecting cable
between the (-) terminals of the starting
battery and accessory battery. See the
illustrations of the wiring connections.
This cable must be made from wire
thicker than the starting battery cable.
EWM00600
WARNING
Use of smaller wire could lead to a fire.
65
Maintenance
3
7
4
2
1
6
ZMU01942
5
ZMU04679
1. Battery for accessories
2. Battery for starting
3. Large black lead
4. Large red lead for starting battery
5. Negative connecting cable
6. Power for accessories
7. Small red lead for accessory battery charging (optional part)
NOTE:
If a battery selector switch is desired, consult
your Yamaha dealer about correct wiring.
EMU29370
Disconnecting the battery
Disconnect the BLACK cable from the NEGATIVE (-) terminal first. Then disconnect the
RED cable from the POSITIVE (+) terminal.
EMU29390
Checking top cowling
Check the fitting of the top cowling by pushing it with both hands. If it is loose have it repaired by your Yamaha dealer.
EMU29400
Coating the boat bottom
A clean hull improves boat performance. The
boat bottom should be kept as clean of marine growth as possible. If necessary, the
boat bottom can be coated with an anti-fouling paint approved for your area to inhibit
marine growth.
Do not use anti-fouling paint which includes
copper or graphite. These paints can cause
more rapid engine corrosion.
ZMU01943
66
Trouble Recovery
EMU29422
Troubleshooting
A problem in the fuel, compression, or ignition systems can cause poor starting, loss of
power, or other problems. This section describes basic checks and possible remedies,
and covers all Yamaha outboard motors.
Therefore some items may not apply to your
model.
If your outboard motor requires repair, bring
it to your Yamaha dealer.
If the engine trouble warning indicator is
flashing, consult your Yamaha dealer.
Starter will not operate.
Q. Is battery capacity weak or low?
A. Check battery condition. Use battery of
recommended capacity.
Q. Are battery connections loose or corroded?
A. Tighten battery cables and clean battery
terminals.
Q. Is fuse for electric start relay or electric circuit blown?
A. Check for cause of electric overload and
repair. Replace fuse with one of correct amperage.
Q. Are starter components faulty?
A. 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 stale?
A. Fill tank with clean, fresh fuel.
Q. Is fuel filter clogged?
A. Clean or replace filter.
Q. Is starting procedure incorrect?
A. See page 36.
Q. Has fuel pump malfunctioned?
A. Have serviced by a Yamaha dealer.
Q. Are spark plug(s) fouled or of incorrect
type?
A. Inspect spark plug(s). Clean or replace
with recommended type.
Q. Are spark plug cap(s) fitted incorrectly?
A. Check and re-fit cap(s).
Q. Is ignition wiring damaged or poorly connected?
A. Check wires for wear or breaks. Tighten
all loose connections. Replace worn or broken wires.
Q. Are ignition parts faulty?
A. Have serviced by a Yamaha dealer.
Q. Is engine stop switch lanyard not attached?
A. Attach lanyard.
Q. Are engine inner parts damaged?
A. Have serviced by a Yamaha dealer.
Engine idles irregularly or stalls.
Q. Are spark plug(s) fouled or of incorrect
type?
A. Inspect spark plug(s). Clean or replace
with recommended type.
67
Trouble Recovery
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 serviced by a Yamaha dealer.
Q. Has warning system activated?
A. Find and correct cause of warning.
Q. Is spark plug gap incorrect?
A. Inspect and adjust as specified.
Q. Is ignition wiring damaged or poorly connected?
A. Check wires for wear or breaks. Tighten
all loose connections. Replace worn or broken wires.
A. Return to home position.
Q. Is motor angle too high?
A. Return to normal operating position.
Q. Is carburetor clogged?
A. Have serviced by a Yamaha dealer.
Q. Is fuel joint connection incorrect?
A. Connect correctly.
Q. Is throttle valve adjustment incorrect?
A. Have serviced by a Yamaha dealer.
Q. Is battery cable disconnected?
A. Connect securely.
Warning buzzer sounds or indicator
lights.
Q. Is cooling system clogged?
A. Check water intake for restriction.
Q. Is engine oil level low?
A. Fill oil tank with specified engine oil.
Q. Is specified engine oil not being used?
A. Check and replace oil as specified.
Q. Is thermostat faulty or clogged?
A. Have serviced by a Yamaha dealer.
Q. Are carburetor adjustments incorrect?
A. Have serviced by a Yamaha dealer.
Q. Is fuel pump 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?
Q. Is heat range of spark plug incorrect?
A. Inspect spark plug and replace it with recommended type.
Q. Is specified engine oil not being used?
A. Check and replace oil with specified type.
Q. Is engine oil contaminated or deteriorated?
A. Replace oil with fresh, specified type.
Q. Is oil filter clogged?
A. Have serviced by a Yamaha dealer.
Q. Has oil feed/injection pump malfunctioned?
68
Trouble Recovery
A. Have serviced by a Yamaha dealer.
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?
A. Have propeller repaired or replaced.
Q. Is propeller pitch or diameter incorrect?
A. Install correct propeller to operate outboard at its recommended speed (r/min)
range.
Q. Is trim angle incorrect?
A. Adjust trim angle to achieve most efficient
operation.
Q. Is motor mounted at incorrect height on
transom?
A. Have motor adjusted to proper transom
height.
Q. Are weeds or other foreign matter tangled
on gear housing?
A. Remove foreign matter and clean lower
unit.
Q. Is fuel system obstructed?
A. Check for pinched or kinked fuel line or
other obstructions in fuel system.
Q. Is fuel filter clogged?
A. Clean or replace filter.
Q. Is fuel contaminated or stale?
A. Fill tank with clean, fresh fuel.
Q. Is spark plug gap incorrect?
A. Inspect and adjust as specified.
Q. Is ignition wiring damaged or poorly connected?
A. Check wires for wear or breaks. Tighten
all loose connections. Replace worn or broken wires.
Q. Have ignition parts failed?
A. Have serviced by a Yamaha dealer.
Q. Is specified engine oil not being used?
A. Check and replace oil with specified type.
Q. Has warning system activated?
A. Find and correct cause of warning.
Q. Is boat bottom fouled with marine growth?
A. Clean boat bottom.
Q. Are spark plug(s) fouled or of incorrect
type?
A. Inspect spark plug(s). Clean or replace
with recommended type.
69
Q. Is thermostat faulty or clogged?
A. Have serviced by a Yamaha dealer.
Q. Is air vent screw closed?
A. Open the air vent screw.
Q. Is fuel pump damaged?
A. Have serviced by a Yamaha dealer.
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 recommended type.
Q. Is high pressure fuel pump drive belt broken?
A. Have serviced by a Yamaha dealer.
Q. Is engine not responding properly to shift
lever position?
A. Have serviced by a Yamaha dealer.
Trouble Recovery
board motor unsafe to operate.
If the outboard motor hits an object in the water, follow the procedure below.
Engine vibrates excessively.
Q. Is propeller damaged?
A. Have propeller repaired or replaced.
Q. Is propeller shaft damaged?
A. Have serviced by a Yamaha dealer.
Q. Are weeds or other foreign matter tangled
on propeller?
A. Remove and clean propeller.
Q. Is motor mounting bolt loose?
A. Tighten bolt.
Q. Is steering pivot loose or damaged?
A. Tighten or have serviced by a Yamaha
dealer.
EMU29431
Temporary action in
emergency
EMU29440
Impact damage
EWM00870
WARNING
The outboard motor can be seriously
damaged by a collision while operating or
trailering. Damage could make the out-
1. Stop the engine immediately.
2. Inspect the control system and all components for damage. Also inspect the
boat for damage.
3. Whether damage is found or not, return
to the nearest harbor slowly and carefully.
4. Have a Yamaha dealer inspect the outboard motor before operating it again.
EMU29450
Running single engine
When using only engine in an emergency, be
sure to keep the unused one tilted up and operate the other engine at low speed.
ECM00370
CAUTION:
If the boat is operated with one engine in
the water but not running, water may run
into the exhaust pipe due to wave action,
causing engine trouble.
NOTE:
When you are maneuvering at low speed,
such as near a dock, it is recommended that
both engines be running with one in neutral
gear if possible.
70
Trouble Recovery
EMU29471
Replacing fuse
If a fuse has blown, remove the electrical
cover, open the fuse holder and remove the
fuse with a fuse puller (if equipped). Replace
it with a spare one of the proper amperage.
EWM00630
WARNING
Be sure to use the specified fuse. An incorrect fuse or a piece of wire could allow
excessive current flow. This could cause
electric system damage and a fire hazard.
2
1
ZMU01904
1. Fuse (20 A, 30 A, 100A)
2. Fuse puller
EMU29520
Power trim and tilt will not operate
If the engine cannot be tilted up or down with
the power trim and tilt/ the power tilt because
of a discharged battery or a failure with the
power trim and tilt unit/the power tilt, the engine can be tilted manually.
1. Loosen the manual valve screw by turning it counterclockwise until it stops.
NOTE:
Consult your Yamaha dealer if the new fuse
immediately blows again.
2
3
3
5
4
1
4
3
1. Electrical cover
2. Fuse holder
3. Fuse (20 A, 30 A, 100A)
4. Spare fuse (20 A, 30A, 100A)
5. Fuse puller
71
ZMU01903
1
ZMU01905
1. Manual valve screw
2. Put the engine in the desired position,
then tighten the manual valve screw by
turning it clockwise.
EMU29670
Engine fails to operate
EMU29741
Low oil level warning activates
If the oil level is allowed to drop too low, the
red segment will appear on the oil level indicator, the buzzer will sound, and engine
speed will be limited to about 2000 r/min. If
this happens, a reserve amount of oil can be
pumped from the remote oil tank to the engine oil tank using the emergency switch.
EWM01050
WARNING
Be sure to stop the engine before performing this procedure.
ECM00900
CAUTION:
If the emergency switch is held up too
●
long, too much oil will be pumped into
the engine oil tank, overflowing it. Release the switch when oil reaches the
upper level line on the engine oil tank.
Do not use this emergency procedure
●
unless the oil level warning indicators
are working.
1. Remove the top cowling.
2. Turn on the main switch.
ON STARTOFF
ZMU01906
3. Lift the emergency switch to pump reserve oil into the engine oil tank from the
remote oil tank.
Trouble Recovery
1
ZMU01907
1. Emergency switch
12
1. Engine oil tank
2. Remote oil tank
4. After using the emergency switch, turn
off the main switch, then turn it back on.
This resets the warning system to normal operation. The yellow segment will
continue to be displayed on the oil level
indicator.
5. Start the engine and return to the nearest port for more oil.
NOTE:
The maximum reserve oil capacity is 1500
●
cm3 (1.6 US qt, 1.31 Imp qt).
●
The oil-feed pump will not operate if the
engine is tilted up more than 35°. Put the
engine in the upright position (not tilted)
before using the emergency switch.
ZMU01908
72
Trouble Recovery
EMU29760
Treatment of submerged motor
If the outboard motor is submerged, immediately take it to a Yamaha dealer. Otherwise
some corrosion may begin almost immediately.
If you cannot immediately take the outboard
motor to a Yamaha dealer, follow the procedure below in order to minimize engine damage.
EMU29970
Procedure
1. Thoroughly wash away mud, salt, seaweed, and so on, with fresh water.
ZMU01909
2. Remove the spark plugs and face the
spark plug holes downward to allow any
water, mud, or contaminants to drain.
plug holes while rotating the flywheel
manually.
ZMU01911
5. Take the outboard motor to a Yamaha
dealer as soon as possible.
ECM00400
CAUTION:
Do not attempt to run the outboard motor
until it has been completely inspected.
ZMU01910
3. Drain the fuel from the vapor separator,
fuel filter, and fuel line.
4. Spray “Fogging Oil” or supply engine oil
through the intake manifold and spark
73
Consumer information
EMU29811
Important warranty information for U.S.A. and Canada
74
Consumer information
75
Consumer information
EMU29820
YAMAHA MOTOR CORPORATION, U.S.A.
OUTBOARD MOTOR TWO YEAR LIMITED WARRANTY
76
Consumer information
77
Consumer information
78
Consumer information
EMU29840
IMPORTANT WARRANTY INFORMATION IF YOU USE YOUR
YAMAHA OUTSIDE U.S.A. OR CANADA
79
Printed in Japan
April 2004–0.4 × 1 !
Printed on recycled paper
YAMAHA MOTOR CO., LTD.
MADE IN JAPAN
PAYS D'ORIGINE JAPON
OUTBOARD MOTOR WARRANTY REGISTRATION
ENREGISTREMENT DE LA GARANTIE DU MOTEUR HORS-BORD
Please complete and mail this card. This information is necessary to accurately register your unit for warranty.
Veuillez signer ci-dessous pour attester que le montage et l’inspection ont été faits dans le respect des directives d’inspection et
OUTBOARD MOTOR MODEL AND SERIAL NUMBER (From I.D. label on clamp bracket)
MODÉLE ET NO. DE SÉRIE DU MOTEUR HORS-BORD (sur l’étiquette d’identification de la presse de fixation)
DATE SOLD
DATE DE
LIVRAISON
OWNER’S NAME
NOM DU
PROPRIÉTAIRE
ADDRESS
ADRESSE
PHONE NUMBER ( )
NUMÉRO DE TÉLÉPHONE
que la marche à suivre pour la garantie et l’entretien a été expliquée à l’acheteur au détail.
(For Dealer Use Only)
(A l’usage du concessionnaire)
YAMAHA DEALER NUMBER
NO. DU CONCESSIONNAIRE
YAMAHA
DEALER NAME
NOM DU
CONCESSIONNAIRE
USAGE
(Check One)
UTILISATION
MONTH DAY YEAR
MOIS JOUR ANNÉE
FIRST LAST
PRÉNOM NOM DE FAMILLE
STREET
RUE
CITY STATE/PROVINCE ZIP
VILLE PROVINCE CODE POSTAL
(En cocher un.)
PLEASURE
LOISIR
COMMERCIAL
COMMERCIAL
ATTN: WARRANTY DEPARTMENT
PLACE
POSTAGE
HERE
Loading...