2012 YAMAHA MT-03 warning light

TABLE OF CONTENTS
SAFETY INFORMATION.....................1-1
Safe riding .........................................1-1
Protective apparel.............................1-2
Modifications .....................................1-2
Loading and accessories ..................1-2
Gasoline and exhaust gas ................1-4
DESCRIPTION.....................................2-1
Left view ............................................2-1
Right view .........................................2-2
Controls and instruments ..................2-3
INSTRUMENT AND CONTROL
FUNCTIONS........................................3-1
Immobilizer system...........................3-1
Main switch/steering lock ..................3-2
Indicator and warning lights ..............3-3
Multi-function meter unit ...................3-5
Tachometer .......................................3-6
Odometer, tripmeter modes ..............3-6
Clock mode .......................................3-7
Self-diagnosis devices......................3-7
Indicator lights brightness
control mode..............................3-8
Anti-theft alarm (optional) .................3-8
Handlebar switches...........................3-9
Clutch lever .....................................3-10
Shift pedal.......................................3-10
Brake lever ......................................3-11Brake pedal.....................................3-11
Fuel tank cap...................................3-11
Fuel .................................................3-12
Fuel tank breather/overflow hose ...3-13
Catalytic converter..........................3-13
Seats ...............................................3-14
Adjusting the shock absorber
assembly..................................3-16
Sidestand........................................3-18
Ignition circuit cut-off system ..........3-19
PRE-OPERATION CHECKS...............4-1
Pre-operation check list ....................4-2
OPERATION AND IMPORTANT
RIDING POINTS..................................5-1
Starting the engine............................5-1
Shifting ..............................................5-2
Tips for reducing fuel consumption ...5-3
Engine break-in .................................5-3
Parking..............................................5-4
PERIODIC MAINTENANCE
AND MINOR REPAIR.........................6-1
Owner’s tool kit.................................6-1
Periodic maintenance and
lubrication chart..........................6-2
Removing and installing panels ........6-6
Checking the spark plug ...................6-6Engine oil and oil filter element.........6-8
Coolant............................................6-12
Replacing the air filter element
and cleaning the check hoses ...6-13
Adjusting the engine idling speed ...6-14
Checking the throttle cable
free play...................................6-15
Valve clearance...............................6-15
Tires ................................................6-16
Cast wheels....................................6-19
Adjusting the clutch lever
free play...................................6-19
Checking the front and rear
brake pads...............................6-20
Checking the brake fluid level .........6-21
Changing the brake fluid .................6-22
Drive chain slack .............................6-23
Cleaning and lubricating the
drive chain ................................6-24
Checking and lubricating the
cables .......................................6-25
Checking and lubricating the
throttle grip and cable ..............6-25
Checking and lubricating the
brake and clutch levers ............6-26
Lubricating the brake pedal............6-26
Checking and lubricating the
sidestand..................................6-27
Lubricating the side suspension .....6-27

DESCRIPTION
EAU10430
Controls and instruments
1. Clutch lever (page 3-10)
2. Left handlebar switches (page 3-9)
3. Multi-function meter unit and warning lights (page 3-3, 3-5)
4. Main switch and steering lock (page 3-2)5. Right handlebar switches (page 3-9)
6. Throttle grip (page 6-15)
7. Brake lever (page 3-11)
8. Fuel tank cap (page 3-11)
2-3
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9
10

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INSTRUMENT AND CONTROL FUNCTIONS
3-3
To unlock the steering
1. Push
2. Turn
Push the key in, and then turn it to
“OFF” while still pushing it.
EWA10060
WARNING0
Never turn the key to “OFF” or
“LOCK” while the vehicle is moving,
otherwise the electrical systems
will be switched off, which may re-
sult in loss of control or an acci-
dent. Make sure that the vehicle is
stopped before turning the key to
“OFF” or “LOCK”.
EAU10941
F(Parking)
The steering is locked, and the tail-
light, license plate light and auxiliary
lights are on. The hazard lights and
turn signal lights can be turned on, but
all other electrical systems are off. The
key can be removed.
The steering must be locked before
the key can be turned to “F”.
ECA11020CAUTION:
Do not use the parking position for
an extended length of time, other-
wise the battery may discharge.
EAU11003
Indicator and warning lights
1. Immobilizer system indicator light “ ”
2. Neutral indicator light “N”
3. Turn signal indicator light “y”
4. High beam indicator light “1”
5. Engine trouble warning light “U”
6. Coolant temperature warning light “u”
7. Fuel level warning light “K”
EAU26873
Immobilizer system indicator
light “ ”
The electrical circuit of the indicator
light can be checked by turning the
key to “ON”.
If the indicator light does not come on
for a few seconds, then go off, have a
Yamaha dealer check the electrical
circuit.

INSTRUMENT AND CONTROL FUNCTIONS
3-4
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9
10
When the key is turned to “OFF” and
30 seconds have passed, the indicator
light will start flashing indicating the
immobilizer system is enabled. After
24 hours have passed, the indicator
light will stop flashing, however the im-
mobilizer system is still enabled.
This model is also equipped with a
self-diagnosis device for the immobi-
lizer system. (See page 3-7 for an ex-
planation of the self-diagnosis device.)
EAU11060
Neutral indicator light “N”
This indicator light comes on when the
transmission is in the neutral position.
EAU11020
Turn signal indicator light “y”
This indicator light flashes when the
turn signal switch is pushed to the left
or right.
EAU11080
High beam indicator light “1”
This indicator light comes on when the
high beam of the headlight is switched
on.
EWA10060
WARNING0
Never turn the key to “OFF” or
“LOCK” while the vehicle is moving,
otherwise the electrical systems
will be switched off, which may re-
sult in loss of control or an acci-
dent. Make sure that the vehicle is
stopped before turning the key to
“OFF” or “LOCK”.
EAU11530
Engine trouble warning light “U”
This warning light comes on or flashes
when an electrical circuit monitoring
the engine is defective. When this oc-
curs, have a Yamaha dealer check the
self-diagnosis system. (See page 3-7
for an explanation of the self-diagno-
sis device.)
The electrical circuit of the warning
light can be checked by turning the
key to “ON”. If the warning light does
not come on for a few seconds, then
go off, have a Yamaha dealer check
the electrical circuit.
EAU11440
Coolant temperature warning
light “u”
This warning light comes on when the
engine overheats. When this occurs,
stop the engine immediately and allow
the engine to cool.
The electrical circuit of the warning
light can be checked by turning the
key to “ON”.
If the warning light does not come on
for a few seconds, then go off, have a
Yamaha dealer check the electrical
circuit.
ECA10020
CAUTION:
Do not operate the engine if it is
overheated.
EAU11361
Fuel level warning light “K”
This warning light comes on when the
fuel level drops below approximately
4.25 L (1.12 US gal) (0.93 Imp.gal).
When this occurs, refuel as soon as
possible.

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INSTRUMENT AND CONTROL FUNCTIONS
3-5
The electrical circuit of the warning
light can be checked by turning the
key to “ON”.
If the warning light does not come on
for a few seconds, and then go off,
have a Yamaha dealer check the elec-
trical circuit.
NOTE:
This model is also equipped with a
self-diagnosis device for the fuel level
detection circuit. If the fuel level detec-
tion circuit is defective, the following
cycle will be repeated until the mal-
function is corrected: The fuel level
warning light will flash eight times, and
then go off for 3.0 seconds. If this oc-
curs, have a Yamaha dealer check the
vehicle.
EAUB1392
Multi-function meter unit
1. Speedometer
2. Tachometer
3. Clock
4. Odometer/Tripmeters/Fuel reserve tripmeter
5. “SELECT” button
6. “RESET” button
EWA12421
WARNING0
Be sure to stop the vehicle before
making any setting changes to the
multi-function meter unit.
The multi-function meter unit is equip-
ped with the following:
●a speedometer (which shows the
riding speed)
●a tachometer (which shows en-
gine speed)
●an odometer (which shows the to-
tal distance traveled)
●two tripmeters (which show the
distance traveled since they were
last set to zero)
●a fuel reserve tripmeter (which
shows the distance traveled since
the fuel level warning light came on)
●a clock
●a self-diagnosis device
●an indicator lights brightness con-
trol mode
To switch the speedometer and
odometer/tripmeter displays between
kilometers and miles, push the “SE-
LECT” and “RESET” buttons together
and turn the key to “ON”. When the
digits start flashing on the display,
push the “SELECT” button to choose
kilometers or miles.
NOTE:
Be sure to turn the key to “ON” before
using the “SELECT” and “RESET”
buttons.

INSTRUMENT AND CONTROL FUNCTIONS
3-6
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Tachometer
1. Tachometer
2. Red zone
The electric tachometer allows the rid-
er to monitor the engine speed and
keep it within the ideal power range.
ECA10031CAUTION:
Do not operate the engine in the
tachometer red zone.
Red zone: 7,500 r/min and above.
Odometer, tripmeter modes
1. “SELECT” button
2. “RESET” button
Pushing the “SELECT” button switch-
es the display between the odometer
mode “ODO” and the tripmeter modes
“TRIP 1” and “TRIP 2” in the following
order:
ODO
6TRIP 1 6TRIP 2 6ODO
If the fuel level warning light comes on
(see page 3-4), the odometer display
will automatically change to the fuel
reserve tripmeter mode “F-TRIP” and
start counting the distance traveled
from that point. In that case, push the
“SELECT” button to switch the display
between the various tripmeter,
odometer modes in the following or-
der:
F-TRIP
6ODO6TRIP 1 6TRIP 2
6F-TRIP
To reset a tripmeter, select it by push-
ing the “SELECT” button, and then
push the “RESET” button for at least
four seconds. If you do not reset the
fuel reserve tripmeter manually, it will
reset itself automatically and the dis-
play will return to the prior mode after
refueling and traveling 5 km (3 mi).

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INSTRUMENT AND CONTROL FUNCTIONS
3-7
Clock mode
1. Clock
2. “SELECT” button
3. “RESET” button
Turn the key to “ON”.
T
o set the clock
1. Push the “SELECT” button for at
least two seconds.
2. When the hour digits start flash-
ing, push the “RESET” button to
set the hours.
3. Push the “SELECT” button, and
the minute digits will start flash-
ing.
4. Push the “RESET” button to set
the minutes.
5. Push the “SELECT” button, and
then release it to start the clock.
Self-diagnosis devices
1. Engine trouble warning light “U”
2. Immobilizer system indicator light “ ”
This model is equipped with a self-diag-
nosis device for various electrical cir-
cuits. If any of those circuits are defec-
tive, the engine trouble warning light
will start flashing. If this occurs, have a
Yamaha dealer check the vehicle.
This model is also equipped with a
self-diagnosis device for the immobi-
lizer system.
Turn the key to "ON". If any of the im-
mobilizer system circuits are defec-
tive, the immobilizer system indicator
light will flash, and it will indicate an er-
ror code.
If this occurs, have a Yamaha dealer
check the vehicle. However, if the indi-
cator light slowly flashes five times,
and then quickly flashes two times re-
peatedly, this error could be caused by
signal interference. If this occurs, try
the following.
1. Use the code re-registering key to
start the engine.
NOTE:
Make sure there are no other immobi-
lizer keys close to the main switch,
and do not keep more than one immo-
bilizer key on the same key ring! Im-
mobilizer system keys may cause sig-
nal interference, which may prevent
the engine from starting.
2. If the engine starts, turn it off and
try starting the engine with the
standard keys.
3. If one or both of the standard keys
do not start the engine, take the
vehicle, the code re-registering
key and both standard keys to a
Yamaha dealer and have the
standard keys re-registered.

INSTRUMENT AND CONTROL FUNCTIONS
3-12
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To close the fuel tank cap
1. Push the fuel tank cap into posi-
tion with the key inserted in the
lock.
2. Turn the key counterclockwise to
the original position, remove it,
and then close the lock cover.
NOTE:
The fuel tank cap cannot be closed
unless the key is in the lock. In addi-
tion, the key cannot be removed if the
cap is not properly closed and locked.
EWA11090
WARNING0
Make sure that the fuel tank cap is
properly closed before riding.
EAU13210
Fuel
1. Fuel tank filler tube
2. Fuel level
Make sure that there is sufficient fuel
in the tank. Fill the fuel tank to the bot-
tom of the filler tube as shown.
EWA10880
WARNING0
• Do not overfill the fuel tank,
otherwise it may overflow when
the fuel warms up and expands.
• Avoid spilling fuel on the hot
engine.
ECA10070CAUTION:
Immediately wipe off spilled fuel
with a clean, dry, soft cloth, since
fuel may deteriorate painted sur-
faces or plastic parts.
EAU13390
Recommended fuel:
PREMIUM UNLEADED
GASOLINE ONLY
Fuel tank capacity:
15.0 L (3.96 US gal) (3.29 Imp.gal)
Fuel reserve amount (when the fuel
level warning light comes on):
4.25 L (1.12 US gal) (0.93 Imp.gal)