warning YAMAHA MT-03 2012 User Guide

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INSTRUMENT AND CONTROL FUNCTIONS
3-13
EAUB1300
Fuel tank breather/overflow
hose
1. Fuel tank breather/overflow hose
2. Clamp
Before operating the motorcycle:
●Check the fuel tank breather/
overflow hose connection.
●Check the fuel tank breather/
overflow hose for cracks or dam-
age, and replace it if damaged.
●Make sure that the end of the fuel
tank breather/overflow hose is not
blocked, and clean it if necessary.
●Make sure that the end of the fuel
tank breather/overflow hose is
positioned inside of the clamp.
ECA11400CAUTION:
Use only unleaded gasoline. The
use of leaded gasoline will cause
severe damage to internal engine
parts, such as the valves and piston
rings, as well as to the exhaust sys-
tem.
Your Yamaha engine has been de-
signed to use premium unleaded
gasoline with a research octane num-
ber of 95 or higher. If knocking (or
pinging) occurs, use a gasoline of a
different brand. Use of unleaded fuel
will extend spark plug life and reduce
maintenance costs.
EAU13431
Catalytic converter
This model is equipped with a catalyt-
ic converter in the exhaust system.
EWA10860
WARNING0
The exhaust system is hot after op-
eration. Make sure that the exhaust
system has cooled down before do-
ing any maintenance work.

INSTRUMENT AND CONTROL FUNCTIONS
3-16
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10A. Distance (spring preload)
Adjust the spring preload as follows.
1. Loosen the locknut.
2. To increase the spring preload
and thereby harden the suspen-
sion, turn the adjusting nut in di-
rection (a). To decrease the
spring preload and thereby soften
the suspension, turn the adjusting
nut in direction (b).
NOTE:
●Use the special wrench included
in the owner's tool kit to make the
adjustment.
●The spring preload setting is de-
termined by measuring distance
A, shown in the illustration. The
longer distance A is, the lower the
spring preload; the shorter dis-
tance A is, the higher the spring
preload. With each complete turn
of the adjusting nut, distance A
changes by 1.5 mm (0.059 in).
●When measuring distance A, the
rear wheel must be raised off the
ground. (See page 6-36).
EAUB1330
Adjusting the shock
absorber assembly
1. Spring preload adjusting nut
2. Locknut
(a) Increasing the spring preload
(b) Decreasing the spring preload
This shock absorber assembly is
equipped with a spring preload adjust-
ing nut.
ECA10100
WARNING0
Never attempt to turn an adjusting
mechanism beyond the maximum
or minimum settings.

EAU15301
Sidestand
1. Sidestand
The sidestand is located on the left
side of the frame. Raise the sidestand
or lower it with your foot while holding
the motorcycle upright.
NOTE:
The built-in sidestand switch is part of
the ignition circuit cut-off system,
which cuts the ignition in certain situa-
tions. (See further down for an expla-
nation of the ignition circuit cut-off sys-
tem.)
INSTRUMENT AND CONTROL FUNCTIONS
3-18
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3. Tighten the locknut to the speci-
fied torque.
ECA11240CAUTION:
Always tighten the locknut against
the adjusting nut, and then tighten
the locknut to the specified torque.
EWA10220
WARNING0
This shock absorber contains high-
ly pressurized nitrogen gas. For
proper handling, read and under-
stand the following information be-
fore handling the shock absorber.
The manufacturer cannot be held
responsible for property damage or
personal injury that may result from
improper handling.
●Do not tamper with or attempt
to open the gas cylinder.
●Do not subject the shock ab-
sorber to an open flame or oth-
er high heat sources, otherwise
it may explode due to exces-
sive gas pressure.
●Do not deform or damage the
gas cylinder in any way, as this
will result in poor damping per-
formance.
●Always have a Yamaha dealer
service the shock absorber.
Tightening torque:
Locknut:
45 Nm (4.5 m·kgf, 32.5 ft·lbf)

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INSTRUMENT AND CONTROL FUNCTIONS
EWA10240
WARNING0
The vehicle must not be ridden
with the sidestand down, or if the
sidestand cannot be properly
moved up (or does not stay up),
otherwise the sidestand could con-
tact the ground and distract the
operator, resulting in a possible
loss of control. Yamaha’s ignition
circuit cut-off system has been de-
signed to assist the operator in ful-
filling the responsibility of raising
the sidestand before starting off.
Therefore, check this system regu-
larly as described below and have
a Yamaha dealer repair it if it does
not function properly.
3-19
EAU15311
Ignition circuit cut-off
system
The ignition circuit cut-off system
(comprising the sidestand switch,
clutch switch and neutral switch) has
the following functions.
●It prevents starting when the
transmission is in gear and the
sidestand is up, but the clutch
lever is not pulled.
●It prevents starting when the
transmission is in gear and the
clutch lever is pulled, but the side-
stand is still down.
●It cuts the running engine when
the transmission is in gear and
the sidestand is moved down.
Periodically check the operation of the
ignition circuit cut-off system accord-
ing to the following procedure.
EWA10250
WARNING0
If a malfunction is noted, have a
Yamaha dealer check the system
before riding.

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PRE-OPERATION CHECKS
4-1
EAU15591
The condition of a vehicle is the owner’s responsibility. Vital components can start to deteriorate quickly and unexpected-
ly, even if the vehicle remains unused (for example, as a result of exposure to the elements). Any damage, fluid leakage
or loss of tire air pressure could have serious consequences. Therefore, it is very important, in addition to a thorough vi-
sual inspection, to check the following points before each ride.
NOTE:
Pre-operation checks should be made each time the vehicle is used. Such an inspection can be accomplished in a very
short time; and the added safety it assures is more than worth the time involved.
EWA11150
WARNING0
If any item in the Pre-operation check list is not working properly, have it inspected and repaired before operat-
ing the vehicle.

EAU15950
EWA10270
WARNING0
Become thoroughly familiar
with all operating controls and
their functions before riding.
Consult a Yamaha dealer re-
garding any control or function
that you do not thoroughly un-
derstand.
Never start the engine or oper-
ate it in a closed area for any
length of time. Exhaust fumes
are poisonous, and inhaling
them can cause loss of con-
sciousness and death within a
short time. Always make sure
that there is adequate ventila-
tion.
Before starting out, make sure
that the sidestand is up. If the
sidestand is not raised com-
pletely, it could contact the
ground and distract the opera-
tor, resulting in a possible loss
of control.
EAUB1340
Starting the engine
In order for the ignition circuit cut-off
system to enable starting, one of the
following conditions must be met:
The transmission is in the neutral
position.
The transmission is in gear with
the clutch lever pulled and the
sidestand up.
EWA10290
WARNING0
Before starting the engine,
check the function of the igni-
tion circuit cut-off system ac-
cording to the procedure de-
scribed on page 3-20.
Never ride with the sidestand
down.
1. Turn the key to “ON” and make
sure that the engine stop switch
is set to “ ”.
ECAB0040CAUTION:
The following warning lights and in-
dicator lights should come on for a
few seconds, then go off.
Neutral indicator light
Turn signal indicator light
High beam indicator light
Engine trouble warning light
Coolant temperature warning
light
Fuel level warning light
Immobilizer system indicator
light
If a warning or indicator light does
not go off, see page 3-3 for the cor-
responding warning and indicator
light circuit check.
2. Shift the transmission into the
neutral position.
OPERATION AND IMPORTANT RIDING POINTS
5-1
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OPERATION AND IMPORTANT RIDING POINTS
EAU17100
0-1000 km (0-600 mi)
Avoid prolonged operation above
4500 r/min.
1000-1600 km (600-1000 mi)
Avoid prolonged operation above
6000 r/min.
ECA11150CAUTION:
After 1000 km (600 mi) of operation,
the engine oil must be changed,
and the oil filter element replaced.
1600 km (1000 mi) and beyond
The vehicle can now be operated nor-
mally.
5-4
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ECA10310CAUTION:
●Keep the engine speed out of
the tachometer red zone.
●If any engine trouble should oc-
cur during the engine break-in
period, immediately have a
Yamaha dealer check the
vehicle.
EAU17212
Parking
When parking, stop the engine, and
then remove the key from the main
switch.
EWA10310
WARNING0
●Since the engine and exhaust
system can become very hot,
park in a place where pedestri-
ans or children are not likely to
touch them.
●Do not park on a slope or on
soft ground, otherwise the ve-
hicle may overturn.
ECA10380CAUTION:
Never park in an area where there
are fire hazards such as grass or
other flammable materials.

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PERIODIC MAINTENANCE AND MINOR REPAIR
EAU17240
Safety is an obligation of the owner.
Periodic inspection, adjustment and
lubrication will keep your vehicle in the
safest and most efficient condition
possible. The most important points of
inspection, adjustment, and lubrica-
tion are explained on the following
pages.
The intervals given in the periodic
maintenance and lubrication chart
should be simply considered as a gen-
eral guide under normal riding condi-
tions. However, DEPENDING ON
THE WEATHER, TERRAIN, GEO-
GRAPHICAL LOCATION, AND INDI-
VIDUAL USE, THE MAINTENANCE
INTERVALS MAY NEED TO BE
SHORTENED.
EWA10320
WARNING0
If you are not familiar with motorcy-
cle maintenance work, have a
Yamaha dealer do it for you.
EAUB1400
Owner’s tool kit
1. Owner’s tool kit
2. Fastening strap
The owner’s tool kit is located on the
bottom of the passenger seat (See
page 3-14) and it held in place with an
O-ring.
The service information included in
this manual and the tools provided in
the owner’s tool kit are intended to as-
sist you in the performance of preven-
tive maintenance and minor repairs.
However, additional tools such as a
torque wrench may be necessary to
perform certain maintenance work
correctly.
NOTE:
If you do not have the tools or experi-
ence required for a particular job, have
a Yamaha dealer perform it for you.
EWA10350
WARNING0
Modifications not approved by
Yamaha may cause loss of perfor-
mance and render the vehicle un-
safe for use. Consult a Yamaha
dealer before attempting any
changes.
6-1

PERIODIC MAINTENANCE AND MINOR REPAIR
EAUB1350
Engine oil and oil filter
element
The engine oil level should be checked
before each ride. In addition, the oil must
be changed and the oil filter element re-
placed at the intervals specified in the pe-
riodic maintenance and lubrication chart.To check the engine oil level
1. Place the vehicle on a level surface
and hold it in an upright position.NOTE:
Make sure that the vehicle is posi-
tioned straight up when checking the
oil level. A slight tilt to the side can re-
sult in a false reading.
2. Start the engine, warm it up for
10-15 minutes, let it continue to
idle for 20-30 seconds, and then
turn it off.
3. Wait a few minutes until the oil
settles, remove the oil filler cap,
wipe the dipstick clean, insert it
back into the oil filler hole (without
screwing it in), and then remove it
again to check the oil level.
1. Engine oil filler cap
2. Maximum level mark
3. Minimum level mark
EWAB0010
WARNING0
The exhaust pipes are very hot dur-
ing and following operation. To pre-
vent burns when removing the oil
filler cap, use extra care not to
touch the exhaust pipes.
NOTE:
●The engine oil tank is located in
front of the frame.
●The engine oil should be between
the minimum and maximum level
marks.
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PERIODIC MAINTENANCE AND MINOR REPAIR
ECA10010CAUTION:
Do not operate the vehicle until you
know that the engine oil level is suf-
ficient.
EWA10360
WARNING0
Never remove the engine oil tank
cap after high-speed operation,
otherwise hot engine oil could
spout out and cause damage or in-
jury. Always let the engine oil cool
down sufficiently before removing
the oil tank cap.
4. If the engine oil is below the mini-
mum level mark, add sufficient oil
of the recommended type to raise
it to the correct level.
5. Install the oil filler cap.
To change the engine oil
(with or without oil filter element
replacement)
1. Start the engine, warm it up for
several minutes, and then turn
it off.
2. Place the motorcycle on its side
stand, then place an oil pan under
the oil tank and another under the
engine to collect the used oil.
3. Remove the engine oil filler cap
and the drain bolt to drain the oil
from the crankcase.
4. Remove the drain bolt to drain the
oil from the oil tank.
1. Engine oil crankcase drain bolt
2. Engine oil tank drain bolt
5. Remove the oil filter element
drain bolt to drain the oil from the
oil filter element.
6-9