battery YAMAHA MT-03 2012 Owners Manual

TABLE OF CONTENTS
Checking the front fork....................6-27
Checking the steering.....................6-28
Checking the wheel bearings..........6-29
Battery .............................................6-29
Replacing the fuses ........................6-31
Replacing the headlight bulb ..........6-33
Replacing an auxiliary light bulb .....6-34
Replacing the tail/brake light bulb ...6-34
Replacing a turn signal light bulb....6-35
Replacing the license plate
light bulb...................................6-36
Supporting the motorcycle ..............6-36
Front wheel.....................................6-37
Rear wheel......................................6-38
Troubleshooting..............................6-39
Troubleshooting charts....................6-40
MOTORCYCLE CARE
AND STORAGE...................................7-1
Care ..................................................7-1
Storage.............................................7-3
SPECIFICATIONS ..............................8-1
CONSUMER INFORMATION..............9-1
Identification numbers.......................9-1

DESCRIPTION
EAU10410
Left view
1. Main fuse (page 6-31)
2. Battery (page 6-29)
3. Idle adjusting screw (page 6-14)
4. Air filter element (page 6-13)
5. Owner’s tool kit (page 6-1)6. Seat lock (page 3-14)
7. Shift pedal (page 3-10)
8. Engine oil drain bolt (crankcase) (page 6-9)
9. Engine oil drain bolt (oil tank) (page 6-9)
2-1
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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
3-10
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EAU12733
Hazard switch “r”
With the key in the “ON” or Fposition,
use this switch to turn on the hazard
lights (simultaneous flashing of all turn
signal lights).
The hazard lights are used in case of
an emergency or to warn other drivers
when your vehicle is stopped where it
might be a traffic hazard.
ECA10061CAUTION:
Do not use the hazard lights for an
extended length of time with the
engine not running, otherwise the
battery may discharge.
EAU12820
Clutch lever
1. Clutch lever
The clutch lever is located at the left
handlebar grip. To disengage the
clutch, pull the lever toward the han-
dlebar grip. To engage the clutch, re-
lease the lever. The lever should be
pulled rapidly and released slowly for
smooth clutch operation.
The clutch lever is equipped with a
clutch switch, which is part of the igni-
tion circuit cut-off system. (See page
3-19).
EAU12870
Shift pedal
1. Shift pedal
The shift pedal is located on the left
side of the engine and is used in com-
bination with the clutch lever when
shifting the gears of the 5-speed con-
stant-mesh transmission equipped on
this motorcycle.

OPERATION AND IMPORTANT RIDING POINTS
NOTE:
When the transmission is in the neu-
tral position, the neutral indicator light
should be on, otherwise have a Yama-
ha dealer check the electrical circuit.
3. Start the engine by pushing the
start switch.
NOTE:
If the engine fails to start, release the
start switch, wait a few seconds, and
then try again. Each starting attempt
should be as short as possible to pre-
serve the battery. Do not crank the en-
gine more than 10 seconds on any one
attempt.
ECA11040CAUTION:
For maximum engine life, never ac-
celerate hard when the engine is
cold!
NOTE:
The engine is warm when it quickly re-
sponds to the throttle.
EAU16671
Shifting
1. Shift pedal
N. Neutral position
Shifting gears lets you control the
amount of engine power available for
starting off, accelerating, climbing
hills, etc.
The gear positions are shown in the il-
lustration.
NOTE:
To shift the transmission into the neu-
tral position, press the shift pedal down
repeatedly until it reaches the end of its
travel, and then slightly raise it.
5-2
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PERIODIC MAINTENANCE AND MINOR REPAIR
EAU23290
Checking the wheel bearings
The front and rear wheel bearings
must be checked at the intervals spec-
ified in the periodic maintenance and
lubrication chart. If there is play in the
wheel hub or if the wheel does not turn
smoothly, have a Yamaha dealer
check the wheel bearings.
EAUB1270
Battery
This model is equipped with a sealed-
type (MF) battery, which does not re-
quire any maintenance. There is no
need to check the electrolyte or to add
distilled water.
ECA10620CAUTION:
Never attempt to remove the bat-
tery cell seals, as this would perma-
nently damage the battery.
To access the battery
1. Remove the passenger seat and
rider seat. (See page 3-14.)
2. Remove panels A and B. (See
page 6-6.)
6-29
1. Fuel tank rear bolt
1. Fuel tank front bolt (RH)
2. Fuel tank front bolt (LH)

PERIODIC MAINTENANCE AND MINOR REPAIR
1. Fuel tank couplers
2. Fuel hose
3. Fuel tank breather/overflow hoses
4. Clamps
3. Remove the fuel tank, by remov-
ing the bolt and the washer at the
rear of the fuel tank, and the two
bolts at the front of the fuel tank.
4. Remove the clamp shown, and
then remove the fuel hoses.
5. Remove the fuel tank by pulling it
upward.
6. Remove the battery cover by
pulling it upward.
1. Positive battery terminal
2. Negative battery terminal
To charge the battery
Have a Yamaha dealer charge the bat-
tery as soon as possible if it seems to
have discharged. Keep in mind that
the battery tends to discharge more
quickly if the vehicle is equipped with
optional electrical accessories.
EWA10760
WARNING0
●Electrolyte is poisonous and
dangerous since it contains
sulfuric acid, which causes se-
vere burns. Avoid any contact
with skin, eyes or clothing and
always shield your eyes when
working near batteries. In case
of contact, administer the fol-
lowing FIRST AID.
•EXTERNAL: Flush with plenty
of water.
•INTERNAL: Drink large quan-
tities of water or milk and im-
mediately call a physician.
•EYES: Flush with water for 15
minutes and seek prompt
medical attention.
●Batteries produce explosive hy-
drogen gas. Therefore, keep
sparks, flames, cigarettes, etc.,
away from the battery and pro-
vide sufficient ventilation when
charging it in an enclosed space.
●KEEP THIS AND ALL BATTER-
IES OUT OF THE REACH OF
CHILDREN.
6-30
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PERIODIC MAINTENANCE AND MINOR REPAIR
To store the battery
1. If the vehicle will not be used for
more than one month, remove the
battery, fully charge it, and then
place it in a cool, dry place.
2. If the battery will be stored for
more than two months, check it at
least once a month and fully
charge it if necessary.
3. Fully charge the battery before in-
stallation.
4. After installation, make sure that
the battery leads are properly
connected to the battery termi-
nals.ECA10630CAUTION:
●Always keep the battery
charged. Storing a discharged
battery can cause permanent
battery damage.
●To charge a sealed-type (MF)
battery, a special (constant-
voltage) battery charger is re-
quired. Using a conventional
battery charger will damage
the battery. If you do not have
access to a sealed-type (MF)
battery charger, have a Yamaha
dealer charge your battery.
EAUB1260
Replacing the fuses
1. Main fuse
2. Reserve fuse
6-31

PERIODIC MAINTENANCE AND MINOR REPAIR
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EAU25921Troubleshooting charts
Starting problems or poor engine performance
WARNING0
Keep away open flames and do not smoke while checking or working on the fuel system.
1. Fuel
2. Compression
3. Ignition
4. Battery
Check the fuel level in the
fuel tank.
Operate the electric
starter.
Remove the spark plug
and check the electrodes.
Operate the electric
starter.
There is enough
fuel.
There is
compression.
Wet.
The engine turns
over quickly.
There is no fuel.
There is no
compression.
Dry.
The engine turns
over slowly.
Check the
compression.
Check the ignition.
Wipe off with a dry cloth and correct
the spark plug gap, or replace the
spark plug.
The battery is good.
Have a Yamaha dealer check the
vehicle.
Check the battery lead connections,
and charge the battery if necessary.
Open the throttle halfway and
operate the electric starter.
The engine does not start.
Check the battery.
The engine does
not start. Have a
Yamaha dealer
check the vehicle.
Supply fuel.
Have a Yamaha dealer check
the vehicle.
The engine does not start.
Check the compression.
6-40

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MOTORCYCLE CARE AND STORAGE
7-4
Long-term
Before storing your motorcycle for
several months:
1. Follow all the instructions in the
“Care” section of this chapter.
2. Fill up the fuel tank and add fuel
stabilizer (if available) to prevent
the fuel tank from rusting and the
fuel from deteriorating.
3. Perform the following steps to
protect the cylinder, piston rings,
etc. from corrosion.
a. Remove the spark plug cap
and spark plug.
b. Pour a teaspoonful of engine
oil into the spark plug bore.
c. Install the spark plug cap onto
the spark plug, and then place
the spark plug on the cylinder
head so that the electrodes
are grounded. (This will limit
sparking during the next
step.)
d. Turn the engine over several
times with the starter. (This
will coat the cylinder wall with
oil.)e. Remove the spark plug cap
from the spark plug, and then
install the spark plug and the
spark plug cap.
EWA10950
WARNING0
To prevent damage or injury from
sparking, make sure to ground the
spark plug electrodes while turning
the engine over.
4. Lubricate all control cables and
the pivoting points of all levers
and pedals as well as of the side-
stand/centerstand.
5. Check and, if necessary, correct
the tire air pressure, and then lift
the motorcycle so that both of its
wheels are off the ground. Alter-
natively, turn the wheels a little
every month in order to prevent
the tires from becoming degraded
in one spot.
6. Cover the muffler outlets with
plastic bags to prevent moisture
from entering them.
7. Remove the battery and fully
charge it. Store it in a cool, dry
place and charge it once a month.
Do not store the battery in an ex-
cessively cold or warm place [less
than 0 °C (30 °F) or more than 30
°C (90 °F)]. For more information
on storing the battery, see
page 6-31.
NOTE:
Make any necessary repairs before
storing the motorcycle.