2018 YAMAHA MT-03 oil type

Periodic maintenance an d a djustment
6-9
6
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.
To chan ge the en gine oil (with or
without oil filter cartri dge replace-
ment) 1. Place the vehicle on a level sur- face.
2. Start the engine, warm it up for several minutes, and then turn it
off.
3. Place an oil pan under the engine to collect the used oil.
4. Remove the cowling by removing the bolts.
5. Remove the engine oil filler cap, the engine oil drain bolt and its
gasket to drain the oil from the
crankcase.
TIP
Skip steps 6–8 if the oil filter cartridge
is not being replaced.
6. Remove the oil filter cartridge withan oil filter wrench.
TIP
An oil filter wrench is available at a
Yamaha dealer.
7. Apply a thin coat of clean engine oil to the O-ring of the new oil filter
cartridge.
1. Cowling
2. Bolt
12
1. Engine oil drain bolt
2. Gasket
1. Oil filter wrench
2. Oil filter cartridge
12
12
UB9AE0E0.book Page 9 Thursday, March 23, 2017 2:48 PM

Periodic maintenance an d a djustment
6-21
6
EAU40262
Checkin g the brake flui d level
Before riding, check that the brake fluid
is above the minimum level mark.
Check the brake fluid level with the top
of the reservoir level. Replenish the
brake fluid if necessary.
Front brake
Rear brake
WARNING
EWA16011
Improper maintenance can result in
loss of brakin g a bility. O bserve
these precautions: z Insufficient brake flui d may al-
low air to enter the brake sys-
tem, re ducing brakin g
performance. z
Clean the filler cap before re-
moving . Use only DOT 4 b rake
flui d from a seale d container.
z Use only the specifie d b rake flu-
i d ; otherwise, the ru bber seals
may deteriorate, causin g leak-
a g e.
z Refill with the same type of
brake flui d. A ddin g a brake flui d
other than DOT 4 may result in a
harmful chemical reaction.
z Be careful that water or dust
d oes not enter the brake flui d
reservoir when refilling . Water
will si gnificantly lower the boil-
in g point of the flui d an d may re-
sult in vapor lock, an d d ir
t may
clo g the ABS hy draulic unit
valves.
NOTICE
ECA17641
Brake flui d may d amage painte d
surfaces or plastic parts. Always
clean up spille d flui d imme diately.
As the brake pads wear, it is normal for
the brake fluid level to gradually go
down. A low brake fluid level may indi-
cate worn brake pads and/or brake
system leakage; therefore, be sure to
check the brake pads for wear and the
brake system for leakage. If the brake
fluid level goes down suddenly, have a
Yamaha dealer check the cause before further riding.
1. Minimum level mark
1. Minimum level mark
Specified b rake flui d:
DOT 4
1
1
UB9AE0E0.book Page 21 Thursday, March 23, 2017 2:48 PM

Specifications
8-1
8
Dimensions:
Overall length:2090 mm (82.3 in)
Overall width:
745 mm (29.3 in)
Overall height: 1135 mm (44.7 in)
Seat height: 780 mm (30.7 in)
Wheelbase:
1380 mm (54.3 in)
Ground clearance: 160 mm (6.30 in)
Minimum turning radius: 2.7 m (8.86 ft)
Wei ght:
Curb weight:
169 kg (373 lb)
Engine:
Combustion cycle:
4-stroke
Cooling system:
Liquid cooled
Valve train: DOHC
Cylinder arrangement: Inline
Number of cylinders:
2-cylinder
Displacement: 321 cm³
Bore × stroke:
68.0 × 44.1 mm (2.68 × 1.74 in)
Compression ratio:
11.2 : 1
Starting system: Electric starter
Lubrication system: Wet sump
Engine oil:
Recommended brand:
YAMALUBE
SAE viscosity grades: 10W-40
Recommended engine oil grade: API service SG type or higher, JASO
standard MA Engine oil quantity:
Oil change:
1.80 L (1.90 US qt, 1.58 Imp.qt)
With oil filter removal: 2.10 L (2.22 US qt, 1.85 Imp.qt)
Coolant quantity:
Coolant reservoir (up to the maximum level
mark):0.25 L (0.26 US qt, 0.22 Imp.qt)
Radiator (including all routes):
0.81 L (0.86 US qt, 0.72 Imp.qt)
Air filter:
Air filter element:Oil-coated paper element
Fuel:
Recommended fuel:
Regular unleaded gasoline (Gasohol [E10]
acceptable)
Fuel tank capacity:
14 L (3.7 US gal, 3.1 Imp.gal)
Fuel reserve amount: 3.0 L (0.79 US gal, 0.66 Imp.gal)
Fuel injection:
Throttle body:
ID mark: BR51 00
Spark plu g(s):
Manufacturer/model:
NGK/LMAR8A-9
Spark plug gap: 0.8–0.9 mm (0.031–0.035 in)
Clutch:
Clutch type:Wet, multiple-disc
Drivetrain:
Primary reduction ratio:
3.043 (70/23)
Final drive: Chain
Secondary reduction ratio: 3.071 (43/14)
Transmission type:
Constant mesh 6-speed
Gear ratio: 1st:
2.500 (35/14)
2nd: 1.824 (31/17)
3rd: 1.348 (31/23)
UB9AE0E0.book Page 1 Thursday, March 23, 2017 2:48 PM

Specifications
8-2
8
4th:1.087 (25/23)
5th: 0.920 (23/25)
6th:
0.800 (24/30)
Chassis:
Frame type:Diamond
Caster angle:
25.0 °
Trail: 95 mm (3.7 in)
Front tire:
Type:Tubeless
Size:
110/70-17M/C (54H)
Manufacturer/model: MICHELIN/PILOT STREET
Rear tire:
Type:
Tubeless
Size: 140/70-17M/C (66H)
Manufacturer/model: MICHELIN/PILOT STREET
Loa din g:
Maximum load:
160 kg (353 lb)
(Total weight of rider, passenger, cargo
and accessories)
Tire air pressure (measure d on col d
tires):
Up to 90 kg (198 lb) load:
Front: 200 kPa (2.00 kgf/cm², 29 psi)
Rear: 250 kPa (2.50 kgf/cm², 36 psi)
90 kg (198 lb) load - maximum load:
Front: 200 kPa (2.00 kgf/cm², 29 psi)
Rear:
250 kPa (2.50 kgf/cm², 36 psi)
Front wheel:
Wheel type:Cast wheel
Rim size:
17M/C x MT2.75
Rear wheel:
Wheel type: Cast wheel
Rim size:
17M/C x MT4.00
Front brake:
Type:
Hydraulic single disc brake
Specified brake fluid:
DOT 4
Rear brake:
Type:
Hydraulic single disc brake
Specified brake fluid:
DOT 4
Front suspension:
Type:Telescopic fork
Spring: Coil spring
Shock absorber:
Hydraulic damper
Wheel travel: 130 mm (5.1 in)
Rear suspension:
Type:
Swingarm
Spring: Coil spring
Shock absorber: Hydraulic damper
Wheel travel:
125 mm (4.9 in)
Electrical system:
System voltage:12 V
Ignition system:
TCI
Charging system: AC magneto
Battery:
Model:
GTZ8V
Voltage, capacity: 12 V, 7.0 Ah (10 HR)
Hea dlig ht:
Bulb type:
Halogen bulb
UB9AE0E0.book Page 2 Thursday, March 23, 2017 2:48 PM