2018 YAMAHA MT-09 radiator

Instrument and control functions
4-6
1
2
34
5
6
7
8
9
10
11
12 acceleration or deceleration, but
this is not a malfunction.

If a problem is detected in the oil
level detection circuit, the oil level
warning light will flash repeatedly.
If this occurs, have a Yamahadealer check the vehicle.
EAU11447
Coolant temperature warning light
“”
This warning light comes on if the en-
gine overheats. If this occurs, stop the
engine immediately and allow the en-
gine to cool.
The electrical circuit of the warning light
can be checked by turning the key to
“ON”. The warning light should come
on for a few seconds, and then go off.
If the warning light does not come on
initially when the key is turned to “ON”,
or if the warning light remains on, have
a Yamaha dealer check the electrical
circuit.NOTICE
ECA10022
Do not continue to operate the en-gine if it is overheating.
TIP
For radiator-fan-equipped vehi-
cles, the radiator fan(s) automati-
cally switch on or off according to
the coolant temperature in the ra-
diator.

If the engine overheats, see page7-38 for further instructions.
EAU73171
Engine trouble warning light “ ”
This warning light comes on if a prob-
lem is detected in the engine or other
vehicle control system. If this occurs,
have a Yamaha dealer check the
on-board diagnostic system.
The electrical circuit of the warning light
can be checked by turning the key to
“ON”. The warning light should come
on for a few seconds, and then go off.
If the warning light does not come on
initially when the key is turned to “ON”,
or if the warning light remains on, have
a Yamaha dealer check the vehicle.
EAU69891
ABS warning light “ ”
In normal operation, this warning light
comes on when the key is turned to “ON”, and goes off after traveling at a
speed of 10 km/h (6 mi/h) or higher.
If the ABS warning light:

does not come on when the key is
turned to “ON”

comes on or flashes while riding

does not go off after traveling at a
speed of 10 km/h (6 mi/h) or higher
The ABS may not work correctly. If any
of the above occurs, have a Yamaha
dealer check the system as soon as
possible. (See page 4-16 for an expla-
nation of the ABS.)WARNING
EWA16041
If the ABS warning light does not go
off after traveling at a speed of 10
km/h (6 mi/h) or higher, or if the
warning light comes on or flashes
while riding, the brake system re-
verts to conventional braking. If ei-
ther of the above occurs, or if the
warning light does not come on at
all, use extra caution to avoid possi-
ble wheel lock during emergency
braking. Have a Yamaha dealer
check the brake system and electri-cal circuits as soon as possible.
ABS
BS2-9-E1E0_1.book 6 ページ ２０１８年４月２７日　金曜日　午後４時５０分

Periodic maintenance and adjustment
7-14
1
2
3
4
5
67
8
9
10
11
12 7. Install the engine oil drain bolt with
a new gasket, and then tighten the
bolt to the specified torque.
8. Pour the specified amount of the recommended oil into the crank-
case.
TIPUsing a funnel is recommended.
9. After checking the engine oil filler cap O-ring, install the filler cap.TIPWipe off any spilled oil before startingthe engine.
10. Start the engine and let it idle for several minutes while checking for
oil leaks. If any leakage is found,
immediately stop the engine and
check for the cause.
NOTICE
ECA10402
If the oil level warning light flickers
or remains on even if the oil level is
correct, immediately turn the engine
off and have a Yamaha dealer checkthe vehicle.
11. Turn the engine off, wait a few min- utes until the oil settles, and then
check the oil level one last time.
EAUS1203
CoolantThe coolant level should be checked
regularly. In addition, the coolant must
be changed at the intervals specified in
the periodic maintenance chart.TIPIf genuine Yamaha coolant is not avail-
able, use an ethylene glycol antifreeze
containing corrosion inhibitors for alu-
minum engines and mix with distilledwater at a 1:1 ratio.
EAU20097
To check the coolant level
Since the coolant level varies with en-
gine temperature, check when the en-
gine is cold.1. Park the vehicle on a level surface.
2. With the vehicle in an upright posi- tion, look at the coolant level in the
Tightening torque:Oil filter cartridge:17 N·m (1.7 kgf·m, 13 lb·ft)
Tightening torque: Engine oil drain bolt:43 N·m (4.3 kgf·m, 32 lb·ft)
Recommended coolant: YAMALUBE coolant
Coolant quantity: Coolant reservoir (max level mark):0.25 L (0.26 US qt, 0.22 Imp.qt)
Radiator (including all routes): 1.93 L (2.04 US qt, 1.70 Imp.qt)
BS2-9-E1E0_1.book 14 ページ ２０１８年４月２７日　金曜日　午後４時５０分

Periodic maintenance and adjustment7-15
1
2
3
4
5
678
9
10
11
12
reservoir.
3. If the coolant is at or below the minimum level mark, remove the
coolant reservoir cap. WARNING!
Remove only the coolant reser-
voir cap. Never attempt to re-
move the radiator cap when the
engine is hot.
[EWA15162]
4. Add coolant to the maximum level mark. NOTICE: If coolant is not
available, use distilled water or
soft tap water instead. Do not
use hard water or salt water
since it is harmful to the engine.
If water has been used instead
of coolant, replace it with cool-
ant as soon as possible, other-
wise the cooling system will not
be protected against frost and
corrosion. If water has been
added to the coolant, have a
Yamaha dealer check the anti-
freeze content of the coolant as
soon as possible, otherwise the
effectiveness of the coolant will be reduced.
[ECA10473]
5. Install the coolant reservoir cap.
EAU33032
Changing the coolant
The coolant must be changed at the in-
tervals specified in the periodic mainte-
nance and lubrication chart. Have a
Yamaha dealer change the coolant.
WARNING! Never attempt to remove
the radiator cap when the engine is
hot.
[EWA10382]
1. Coolant reservoir
2. Maximum level mark
3. Minimum level mark
21
3
1. Coolant reservoir cap
1
BS2-9-E1E0_1.book 15 ページ ２０１８年４月２７日　金曜日　午後４時５０分

Periodic maintenance and adjustment
7-32
1
2
3
4
5
67
8
9
10
11
12 The main fuse, the fuel injection system
fuse, and fuse box 2 are located under
the seat. (See page 4-20.)
TIPTo access the fuel injection system
fuse, remove the starter relay cover bypulling it upward.
1. Ignition fuse
2. ABS control unit fuse
3. Auxiliary fuse 1
4. Parking lighting fuse
5. Signaling system fuse
6. Headlight fuse
7. Grip warmer fuse
8. Spare fuse
123
8
456
87
1. Fuse box 2
2. Main fuse
3. Fuel injection system fuse
4. Fuel injection system spare fuse
2
3
4
1
1. Radiator fan motor fuse
2. Backup fuse
3. Electronic throttle valve fuse
4. Terminal fuse 1
5. ABS solenoid fuse
6. ABS motor fuse
7. Spare fuse
1234
7
56
BS2-9-E1E0_1.book 32 ページ ２０１８年４月２７日　金曜日　午後４時５０分

Periodic maintenance and adjustment7-33
1
2
3
4
5
678
9
10
11
12
If a fuse is blown, replace it as follows.
1. Turn the key to “OFF” and turn off the electrical circuit in question.
2. Remove the blown fuse, and then install a new fuse of the specified
amperage. WARNING! Do not
use a fuse of a higher amperage
rating than recommended to
avoid causing extensive dam-
age to the electrical system and
possibly a fire.
[EWA15132]
3. Turn the key to “ON” and turn on the electrical circuit in question to check if the device operates.
4. If the fuse immediately blows again, have a Yamaha dealer
check the electrical system.
1. Starter relay cover
2. Fuel injection system fuse
3. Fuel injection system spare fuse
1
2
3
Specified fuses:Main fuse:50.0 A
Auxiliary fuse 1:
2.0 A
Terminal fuse 1: 2.0 A
Grip warmer fuse: 5.0 A
Headlight fuse:
10.0 A
Signaling system fuse: 7.5 A
Ignition fuse: 15.0 A
Parking lighting fuse:
7.5 A
Radiator fan motor fuse: 15.0 A
ABS motor fuse: 30.0 A
ABS solenoid fuse:
15.0 A
Fuel injection system fuse: 10.0 A
ABS control unit fuse: 7.5 A
Backup fuse: 7.5 A
Electronic throttle valve fuse: 7.5 A
BS2-9-E1E0_1.book 33 ページ ２０１８年４月２７日　金曜日　午後４時５０分

Periodic maintenance and adjustment
7-38
1
2
3
4
5
67
8
9
10
11
12 Engine overheating
WARNING
EWA10401

Do not remove the radiator cap when the engine and radiator are hot. Scalding hot fluid and steam may be
blown out under pressure, which could cause serious injury. Be sure to wait until the engine has cooled.

After removing the radiator cap retaining bolt, place a thick rag, like a towel, over the radiator cap, and then
slowly rotate the cap counterclockwise to the detent to allow any residual pressure to escape. When the hissingsound has stopped, press down on the cap while turning it counterclockwise, and then remove the cap.
TIPIf coolant is not available, tap water can be temporarily us
ed instead, provided that it is changed to the recommended coolantas soon as possible.
Wait until the
engine has cooled.
Check the coolant level in the
reservoir and radiator.
The coolant level
is OK.The coolant level is low.
Check the cooling system
for leakage.
Have a Yamaha dealer checkand repair the cooling system.Add coolant. (See TIP.)
Start the engine. If the engine overheats again,
have a
Yamaha dealer check
and repair the cooling system.
There is
leakage.
There is
no leakage.
BS2-9-E1E0_1.book 38 ページ ２０１８年４月２７日　金曜日　午後４時５０分

9-1
1
2
3
4
5
6
7
8910
11
12
Specifications
EAU6999C
Dimensions:Overall length:2075 mm (81.7 in)
Overall width: 815 mm (32.1 in)
Overall height: 1120 mm (44.1 in)
Seat height:
820 mm (32.3 in)
Wheelbase: 1440 mm (56.7 in)
Ground clearance: 135 mm (5.31 in)
Minimum turning radius:
3.0 m (9.84 ft)Weight:Curb weight:193 kg (425 lb)Engine:Combustion cycle:4-stroke
Cooling system: Liquid cooled
Valve train:
DOHC
Cylinder arrangement: Inline
Number of cylinders: 3-cylinder
Displacement:
847 cm
3
Bore  stroke:
78.0  59.1 mm (3.07  2.33 in) Compression ratio:
11.5 : 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 stan-
dard MA
Engine oil quantity: Oil change:2.40 L (2.54 US qt, 2.11 Imp.qt)
With oil filter removal: 2.70 L (2.85 US qt, 2.38 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): 1.93 L (2.04 US qt, 1.70 Imp.qt)Air filter:Air filter element:
Oil-coated paper elementFuel:Recommended fuel:Premium unleaded gasoline (Gasohol
[E10] acceptable)
Fuel tank capacity: 14 L (3.7 US gal, 3.1 Imp.gal) Fuel reserve amount:
2.8 L (0.74 US gal, 0.62 Imp.gal)
Fuel injection:Throttle body:ID mark:
B901 00Spark plug(s):Manufacturer/model: NGK/CPR9EA9
Spark plug gap:
0.8–0.9 mm (0.031–0.035 in)Clutch:Clutch type:Wet, multiple-discDrivetrain:Primary reduction ratio:1.681 (79/47)
Final drive: Chain
Secondary reduction ratio:
2.813 (45/16)
Transmission type: Constant mesh 6-speed
Gear ratio: 1st:2.667 (40/15)
2nd: 2.000 (38/19)
3rd:
1.619 (34/21)
4th: 1.381 (29/21)
5th: 1.190 (25/21)
BS2-9-E1E0_1.book 1 ページ ２０１８年４月２７日　金曜日　午後４時５０分

Specifications
9-3
1
2
3
4
5
6
7
8910
11
12
Brake/tail light:LED
Front turn signal light:
10.0 W
Rear turn signal light: 10.0 W
Auxiliary light: LED
License plate light:
LED
Meter lighting: LED
Neutral indicator light: LED
High beam indicator light:
LED
Oil level warning light: LED
Turn signal indicator light: LED
Coolant temperature warning light:
LED
Engine trouble warning light: LED
ABS warning light: LED
Immobilizer system indicator light:
LED
Traction control system indicator light: LED
Quick shift indicator light: LED
Fuse(s):Main fuse:50.0 A
Auxiliary fuse 1: 2.0 A
Terminal fuse 1: 2.0 A
Grip warmer fuse:
5.0 A
Headlight fuse: 10.0 A
Signaling system fuse: 7.5 A
Ignition fuse:
15.0 A
Parking lighting fuse: 7.5 A
Radiator fan motor fuse: 15.0 A
Fuel injection system fuse:
10.0 A
ABS control unit fuse: 7.5 A
ABS motor fuse: 30.0 A
ABS solenoid fuse:
15.0 A
Backup fuse: 7.5 A
Electronic throttle valve fuse: 7.5 A
BS2-9-E1E0_1.book 3 ページ ２０１８年４月２７日　金曜日　午後４時５０分