wheel YAMAHA MT-03 2012 User Guide

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PERIODIC MAINTENANCE AND MINOR REPAIR
6-23
EAU22760
Drive chain slack
The drive chain slack should be
checked before each ride and adjusted
if necessary.
EAU22771
To check the drive chain slack
1. Drive chain slack
1. Place the motorcycle on the side-
stand.
NOTE:
When checking and adjusting the dri-
ve chain slack, there should be no
weight on the motorcycle.
2. Shift the transmission into the
neutral position.
3. Move the rear wheel by pushing
the motorcycle to locate the tight-
est portion of the drive chain, and
then measure the drive chain
slack as shown.
4. If the drive chain slack is incor-
rect, adjust it as follows.
Drive chain slack:
40.0-50.0 mm (1.57-1.97 in)
EAU34311
To adjust the drive chain slack
1. Loosen the axle nut and the lock-
nut on each side of the swingarm.
2. To tighten the drive chain, turn the
adjusting bolt on each side of the
swingarm in direction (a). To
loosen the drive chain, turn the
adjusting bolt on each side of the
swingarm in direction (b), and
then push the rear wheel forward.
NOTE:
Using the alignment marks on each
side of the swingarm, make sure that
both chain pullers are in the same po-
sition for proper wheel alignment.

PERIODIC MAINTENANCE AND MINOR REPAIR
ECA10590CAUTION:
If any damage is found or the front
fork does not operate smoothly,
have a Yamaha dealer check or re-
pair it.
EAU23280
Checking the steering
Worn or loose steering bearings may
cause danger. Therefore, the opera-
tion of the steering must be checked
as follows at the intervals specified in
the periodic maintenance and lubrica-
tion chart.
1. Place a stand under the engine to
raise the front wheel off the
ground.
6-28
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EWA10750
WARNING0
Securely support the motorcycle so
that there is no danger of it falling
over.
2. Hold the lower ends of the front
fork legs and try to move them for-
ward and backward. If any free
play can be felt, have a Yamaha
dealer check or repair the steering.

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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
EAUB1410
Replacing the license plate
light bulb
1. Reinforcement plate
2. Bulb socket
3. License plate light bulb
1. Remove the reinforcement plate
by removing the bolts and nuts.
2. Remove the license plate light
bulb socket by pulling it out.
NOTE:
When removing the license plate light
bulb socket, be careful not to pull too
hard.
EAU24350
Supporting the motorcycle
Since this model is not equipped with
a centerstand, follow these precau-
tions when removing the front and rear
wheel or performing other mainte-
nance requiring the motorcycle to
stand upright. Check that the motorcy-
cle is in a stable and level position be-
fore starting any maintenance. A
strong wooden box can be placed un-
der the engine for added stability.
To service the front wheel
1. Stabilize the rear of the motorcy-
cle by using a motorcycle stand
or, if an additional motorcycle
stand is not available, by placing
a jack under the frame in front of
the rear wheel.
2. Raise the front wheel off the
ground by using a motorcycle
stand.
6-36
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3. Remove the defective bulb by
pulling it out of the socket.
4. Insert a new bulb into the socket.
5. Install the bulb socket by pushing
it in.
6. Install the reinforcement plate in
the original position, and then
tighten bolts and nuts to the spec-
ified torque.
Tightening torque:
Reinforcement plate nut:
7 Nm (0.7 m·kgf, 5.1 ft·lbf)
Reinforcement plate bolt (centre):
10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Reinforcement plate bolt (upper):
10 Nm (1.0 m·kgf, 7.2 ft·lbf)

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PERIODIC MAINTENANCE AND MINOR REPAIR
6-37
To service the rear wheel
Raise the rear wheel off the ground by
using a motorcycle stand or, if a mo-
torcycle stand is not available, by plac-
ing a jack either under each side of the
frame in front of the rear wheel or un-
der each side of the swingarm.EAU24360
Front wheelEAU34390
To remove the front wheel
EWA10820
WARNING0
●It is advisable to have a Yama-
ha dealer service the wheel.
●Securely support the motorcy-
cle so that there is no danger of
it falling over.
1. Front wheel axle pinch bolt
2. Wheel axle bolt
3. Brake caliper bolts
4. Brake hose holder bolt
1. Lift the front wheel off the ground
according to the procedure on
page 6-36.
2. Loosen the front wheel axle pinch
bolt, then the wheel axle and the
brake caliper bolts.
3. Remove the brake hose holder on
each side by removing the bolts.
4. Remove the brake caliper on
each side by removing the bolts.
ECA11050CAUTION:
Do not apply the brake after the
brake calipers have been removed,
otherwise the brake pads will be
forced shut.
5. Pull the wheel axle out, and then
remove the wheel.
EAU24860
To install the front wheel
1. Lift the wheel up between the fork
legs.
2. Insert the wheel axle.
3. Lower the front wheel so that it is
on the ground.

PERIODIC MAINTENANCE AND MINOR REPAIR
6-38
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EAU25080
Rear wheelEAU25311
To remove the rear wheelEWA10820
WARNING0
●It is advisable to have a Yama-
ha dealer service the wheel.
●Securely support the motorcy-
cle so that there is no danger of
it falling over.
1. Wheel axle nut
2. Drive chain slack adjusting bolt
3. Locknut
4. Drive chain
1. Wheel axle
2. Brake caliper bracket
1. Loosen the axle nut.
2. Lift the rear wheel off the ground
according to the procedure on
page 6-36.
3. Remove the axle nut.
4. Loosen the locknut on each side
of the swingarm.
5. Turn the drive chain slack adjust-
ing bolts fully in direction (a) and
push the wheel forward.
6. Remove the drive chain from the
rear sprocket.
4. Install the brake calipers by in-
stalling the bolts.
NOTE:
Make sure that there is enough space
between the brake pads before in-
stalling the brake calipers onto the
brake discs.
5. Install the brake hose holders by
installing the bolts.
6. Tighten the wheel axle, the front
wheel axle pinch bolt and the
brake caliper bolts to the speci-
fied torques.
Tightening torques:
Wheel axle:
72 Nm (7.2 m·kgf, 52 ft·lbf)
Front wheel axle pinch bolt:
14 Nm (1.4 m·kgf, 10 ft·lbf)
Brake caliper bolt:
40 Nm (4.0 m·kgf, 29 ft·lbf)
7. Push down hard on the handlebar
several times to check for proper
fork operation.

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PERIODIC MAINTENANCE AND MINOR REPAIR
6-39
NOTE:
●If the drive chain is difficult to re-
move, remove the wheel axle first,
and then lift the wheel upward
enough to remove the drive chain
from the rear sprocket.
●The drive chain cannot be disas-
sembled.
7. While supporting the brake
caliper bracket, pull the wheel
axle out, and then remove the
wheel.
ECA11070CAUTION:
Do not apply the brake after the
wheel has been removed together
with the brake disc, otherwise the
brake pads will be forced shut.
EAU34430
To install the rear wheel
1. Install the wheel and the brake
caliper bracket by inserting the
wheel axle from the right-hand
side.
NOTE:
●Make sure that the retainer on the
swingarm is inserted into the slot
in the brake caliper bracket.
●Make sure that there is enough
space between the brake pads
before installing the wheel.
2. Install the drive chain onto the
rear sprocket.
3. Install the axle nut, and then low-
er the rear wheel so that it is on
the ground.
4. Adjust the drive chain slack. (See
page 6-23.)
5. Tighten the axle nut to the speci-
fied torque.
Tightening torque:
Axle nut:
150 Nm (15.0 m·kgf, 108 ft·lbf)
EAU25870
Troubleshooting
Although Yamaha motorcycles receive
a thorough inspection before shipment
from the factory, trouble may occur
during operation. Any problem in the
fuel, compression, or ignition systems,
for example, can cause poor starting
and loss of power.
The following troubleshooting charts
represent quick and easy procedures
for checking these vital systems your-
self. However, should your motorcycle
require any repair, take it to a Yamaha
dealer, whose skilled technicians have
the necessary tools, experience, and
know-how to service the motorcycle
properly.
Use only genuine Yamaha replace-
ment parts. Imitation parts may look
like Yamaha parts, but they are often
inferior, have a shorter service life and
can lead to expensive repair bills.

MOTORCYCLE CARE AND STORAGE
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EAU26000
Care
While the open design of a motorcycle
reveals the attractiveness of the tech-
nology, it also makes it more vulnera-
ble. Rust and corrosion can develop
even if high-quality components are
used. A rusty exhaust pipe may go un-
noticed on a car, however, it detracts
from the overall appearance of a mo-
torcycle. Frequent and proper care
does not only comply with the terms of
the warranty, but it will also keep your
motorcycle looking good, extend its
life and optimize its performance.
Before cleaning
1. Cover the muffler outlet with a
plastic bag after the engine has
cooled down.
2. Make sure that all caps and cov-
ers as well as all electrical cou-
plers and connectors, including
the spark plug cap, are tightly in-
stalled.3. Remove extremely stubborn dirt,
like oil burnt onto the crankcase,
with a degreasing agent and a
brush, but never apply such prod-
ucts onto seals, gaskets, sprock-
ets, the drive chain and wheel
axles. Always rinse the dirt and
degreaser off with water.
Cleaning
ECA10770CAUTION:
●Avoid using strong acidic
wheel cleaners, especially on
spoked wheels. If such prod-
ucts are used on hard-to-re-
move dirt, do not leave the
cleaner on the affected area
any longer than instructed. Al-
so, thoroughly rinse the area
off with water, immediately dry
it, and then apply a corrosion
protection spray.
●Improper cleaning can damage
windshields, cowlings, panels
and other plastic parts. Use on-
ly a soft, clean cloth or sponge
with mild detergent and water
to clean plastic.
●Do not use any harsh chemical
products on plastic parts. Be
sure to avoid using cloths or
sponges which have been in
contact with strong or abrasive
cleaning products, solvent or
thinner, fuel (gasoline), rust re-
movers or inhibitors, brake flu-
id, antifreeze or electrolyte.
●Do not use high-pressure
washers or steam-jet cleaners
since they cause water seep-
age and deterioration in the fol-
lowing areas: seals (of wheel
and swingarm bearings, fork
and brakes), electric compo-
nents (couplers, connectors,
instruments, switches and
lights), breather hoses and
vents.

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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.

SPECIFICATIONS
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Engine oil:Type:
SAE10W30 or SAE10W40 or SAE15W40
or SAE20W40 or SAE20W50
Recommended engine oil grade:
API service SE, SF, SG type or higher
Engine oil quantity:
Without oil filter element replacement:
3.00 L (3.17 US qt) (2.64 Imp.qt)
With oil filter element replacement:
3.10 L (3.28 US qt) (2.72 Imp.qt)
Total amount (dry engine):
3.40 L (3.60 US qt) (2.99 Imp.qt)
Cooling system:Radiator capacity (including all routes):
1.0 L (1.05 US qt) (0.88 Imp.qt) (Radiator) +
0.25 L (0.26 US qt) (0.22 Imp.qt)
(Coolant reservoir)
Coolant reservoir capacity (up to the
maximum level mark):
0.25 L (0.26 US qt) (0.22 Imp.qt)
From low to full level:
0.15 L (0.16 US qt) (0.13 Imp.qt)
Air filter:Air filter element:
Oil-coated paper element
Fuel:Recommended fuel:
Premium unleaded gasoline only
Fuel tank capacity:
15.0 L (3.96 US gal) (3.30 Imp.gal)
Fuel reserve amount:
4.25 L (1.12 US gal) (0.93 Imp.gal)
Fuel injection:
Model:
297500-0390
Spark plug:Manufacturer/model:NGK/CR7EGap:
0.7-0.8 mm (0.028-0.032 in)
Clutch:Clutch type:
Wet, multiple-disc
Transmission:Primary reduction system:
Spur gear
Primary reduction ratio:
75/36 (2.083)
Secondary reduction system:
Chain drive
Secondary reduction ratio:
47/15 (3.133)
Transmission type:
Constant mesh 5-speed
Dimensions:Overall length:
2070 mm (81.49 in)
Overall width:
860 mm (33.85 in)
Overall height:
1115 mm (43.89 in)
Seat height:
805 mm (31.69 in)
Wheelbase:
1420 mm (55.90 in)
Ground clearance:
200 mm (7.87 in)
Minimum turning radius:
2225 mm (87.59 in)
Basic weight:With oil and fuel:
192 kg (423 lb)
195.2 kg (429 lb) (EU3 version)
Engine:Engine type:
Liquid cooled 4-stroke, SOHC
Cylinder arrangement:
Forward-inclined single cylinder
Displacement:
660.0 cm
3(40.27 cu.in)
Bore x stroke:
100.0 x 84.0 mm (3.94 x 3.31 in)
Compression ratio:
10.00 : 1
Starting system:
Electric starter
Lubrication system:
Dry sump
-20-10 0 1020304050°C
SAE 10W-30
SAE 10W-40
SAE 20W-40
SAE 20W-50
SAE 15W-40