engine coolant YAMAHA MT-09 2021 Owners Manual

Table of contentsSafety information ............................ 1-1
Description ....................................... 2-1
Left view ......................................... 2-1
Right view ....................................... 2-2
Controls and instruments ............... 2-3
Special features .............................. 3-1
“D-MODE” ...................................... 3-1
“TCS-MODE”.................................. 3-1
QSS ................................................ 3-3
BC................................................... 3-4
Instrument an d control functions ... 4-1
Immobilizer system......................... 4-1
Main switch/steering lock............... 4-2
Handlebar switches ........................ 4-3
Indicator lights and warning lights............................................ 4-5
Display ............................................ 4-9
Settings MENU ............................. 4-14
Clutch lever .................................. 4-18
Shift pedal .................................... 4-18
Brake lever.................................... 4-19
Brake pedal .................................. 4-19
Brake control system (BC)............ 4-20
Fuel tank cap ................................ 4-21
Fuel ............................................... 4-22
Fuel tank overflow hose ............... 4-23
Catalytic converter ....................... 4-24
Seat .............................................. 4-24 Rider footrest position .................. 4-25
Handlebar position ....................... 4-25
Adjusting the front fork ................. 4-26
Adjusting the shock absorber
assembly.................................... 4-28
Luggage strap holders .................. 4-30
Auxiliary DC connectors ............... 4-30
Sidestand ...................................... 4-30
Ignition circuit cut-off system ....... 4-31
For your safety – pre-operation
checks ............................................... 5-1
Operation an d important ri din g
points ................................................. 6-1
Engine break-in ............................... 6-1
Starting the engine .......................... 6-2
Shifting ............................................ 6-3
Tips for reducing fuel consumption ................................ 6-4
Parking ............................................ 6-5
Perio dic maintenance an d
a d justment ........................................ 7-1
Tool kit ............................................ 7-2
Periodic maintenance charts .......... 7-3
Periodic maintenance chart for the emission control system .............. 7-3
General maintenance and
lubrication chart ........................... 7-5
Checking the spark plugs ............... 7-9 Canister ........................................ 7-10
Engine oil ...................................... 7-10
Why Yamalube.............................. 7-12
Coolant ......................................... 7-13
Air filter element ............................ 7-14
Checking the engine idling
speed ........................................ 7-14
Valve clearance............................. 7-15
Tires .............................................. 7-15
Cast wheels .................................. 7-17
Adjusting the clutch lever free
play ............................................ 7-18
Checking the brake lever free play ............................................ 7-18
Brake light switches ..................... 7-19
Checking the front and rear brake pads ................................ 7-19
Checking the brake fluid level ...... 7-20
Changing the brake fluid .............. 7-21
Drive chain slack........................... 7-22
Cleaning and lubricating the drive chain ................................. 7-24
Checking and lubricating the
cables ........................................ 7-24
Checking and lubricating the throttle grip ................................ 7-25
Checking and lubricating the brake and shift pedals............... 7-25
Checking and lubricating the
brake and clutch levers ............. 7-26UB7NE0E0.book Page 1 Friday, October 2, 2020 4:38 PM

Description
2-2
2
EAU10421
Right view
1 2 3,4
5
9
10 6
78
1. Fuses (page 7-30)
2. Fuel tank cap (page 4-21)
3. Spring preload adjuster (page 4-26)
4. Rebound damping force adjuster (page 4-26)
5. Coolant reservoir (page 7-13)
6. Engine oil level check window (page 7-10)
7. Engine oil filler cap (page 7-10)
8. Brake pedal (page 4-19) 9. Rear brake light switch (page 7-19)
10.Rear brake fluid reservoir (page 7-20)UB7NE0E0.book Page 2 Friday, October 2, 2020 4:38 PM

Instrument and control functions
4-8
4
TIPWhen the vehicle is turned on, this light
should come on for a few seconds and
then go off. If the light does not come
on, or if the light remains on, have a
Yamaha dealer check the vehicle.NOTICE
ECA27221
When turnin g the main switch on,
avoi d any movement or vi bration of
the vehicle as it may interfere with
the initialization of the IMU. If this
occurs, the TCS system will not op-
erate an d the “TCS-MODE” display
will rea d “OFF” until the IMU can ini-
tialize.
EAU88362
Oil pressure an d Coolant tempera-
ture warnin g li ght “ ”
This warning light comes on if the en-
gine oil pressure is low or if the coolant
temperature is high. If this occurs, stop
the engine immediately.TIP When the vehicle is first turned on,
this light should come on until the
engine is started. 
If a malfunction is detected, this
light will come on and the oil pres-
sure icon will flash.
NOTICE
ECA22441
If the oil pressure an d coolant warn-
in g li ght does not g o off after start-
in g the en gine or if it comes on while
the en gine is runnin g, stop the vehi-
cle an d en gine imme diately.
 If the en gine is overheatin g, the
coolant temperature warnin g
icon will come on. Let the en-
g ine cool. Check the coolant
level (see pa ge 7-35).
 If the en gine oil pressure is low,
the oil pressure warnin g icon
will come on. Check the oil level
(see pa ge 7-10).
 If the warnin g lig ht remains on
after lettin g the en gine cool an d
confirmin g the proper oil level,
have a Yamaha d ealer check
the vehicle. Do not continue to
operate the vehicle!
EAU88370
Auxiliary system warnin g lig ht “ ”
This warning light comes on if a prob-
lem is detected in a non-engine-related
system.TIPWhen the vehicle is turned on, this light
should come on for a few seconds and
then go off. Otherwise, have a Yamaha
dealer check the vehicle.
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Instrument and control functions
4-10
4
Tachometer
The tachometer shows the engine
speed, as measured by the rotational
velocity of the crankshaft, in revolu-
tions per minute (r/min).
NOTICE
ECA10032
Do not operate the en
gine in the ta-
chometer red zone.
Re d zone: 10600 r/min an d a boveVehicle information displays
The two vehicle information displays
can be individually set to show the fol-
lowing items:  ODO: odometer
 F-TRIP: fuel reserve tripmeter
 TRIP1: tripmeter 
TRIP2: tripmeter
 F.AVE: average fuel economy
 F.CRNT: instantaneous fuel econ-
omy
 A.TEMP: air temperature
 C.TEMP: coolant temperature
 Fuel meter
 FUELCON: amount of fuel con-
sumed
 TRIPTIME: running time
Operate the vehicle information display
as follows:
Rotate the wheel switch to move the
cursor over a display.
Push the wheel switch inward and the
selected display will highlight grey.
Rotate the wheel switch to choose a
different display item.
Push the wheel switch inward to con-
firm the new display item.
TIP ODO will lock at 999999 and can-
not be reset.
 TRIP1 and TRIP2 will reset to 0
and begin counting again after
9999.9 has been reached. 
When the fuel tank reserve level
has been reached, F-TRIP ap-
pears automatically and begins
recording distance traveled from
that point.
 After refueling and traveling some
distance, F-TRIP will automatically
disappear.
 See “Unit” on page 4-17 to chan-
ge the fuel consumption units.
 The air temperature is displayed
from –9 °C (16 °F) to 50 °C (122 °F)
in 1 °C (1 °F) increments.
 The air temperature displayed
may vary from the actual ambient
temperature.
 In LAP TIME mode, the vehicle in-
formation display is replaced by
the lap information.
 TRIP1, TRIP2, F-TRIP, F.AVE, FU-
ELCON and TRIPTIME items can
be individually reset.
 If the vehicle coolant temperature
is below 40 °C (104 °F) the coolant
temperature display will read “Lo”
1. Vehicle information displays
1
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Instrument and control functions
4-13
4 To start the timer, press the pass
switch.
Each press of the pass switch will in-
crease the lap count by 1 and reset the
current lap timer.
To pause the lap timer, press the wheel
switch inward.
To unpause the timer, press the pass
switch and the timer will resume with-
out counting a new lap.
To exit the lap time mode, turn it off in
the settings MENU. (See page 4-14.)
TIP
The engine must be running to
start the lap timer.
 The headlight will flash when the
pass switch is pressed.
 Whenever the lap timer is paused,
it can be resumed using the pass
switch.Brake control icon “BC”
This icon is replaced by the auxiliary
system warning and coolant tempera-
ture warning indicators when they are
activated.
For more information on the BC sys-
tem see “BC” on page 3-4. Error mo
de warnin g “Err”
When an internal error occurs (e.g.,
communication with a system control-
ler has been cut off), the error mode
warning will appear as follows.
“Err” and “ ” indicator light indicates
an ECU error.
“Err” only indicates an ABS ECU error.
TIPDepending on the nature of the error,
the display may not function properly
and TCS settings may be impossible to
change. Additionally, ABS may not
function properly. Use extra care when
braking and have a Yamaha dealer
check the vehicle immediately.Auxiliary system warnin g“”
This icon appears if a problem is de-
tected in a non-engine-related system.
Coolant temperature warnin g“”
This icon appears if the coolant tem-
perature reaches 116 °C (241 °F) or
higher. Stop the vehicle and turn off the
engine. Allow the engine to cool.
NOTICE
ECA10022
Do not continue to operate the en-
g ine if it is overheatin g.Oil pressure warnin g“”
This icon appears when the engine oil
pressure is low. When the vehicle is
first turned on, engine oil pressure has
yet to build, so this icon will come on
and stay on until the engine has been
started.TIPIf a malfunction is detected, the oil
pressure warning icon will flash repeat-
edly.NOTICE
ECA26410
Do not continue to operate the en-
g ine if the oil pressure is low.
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For your safety – pre-operation checks
5-1
5
EAU1559B
Inspect your vehicle each time you use it to make sure the vehicle is in safe operating condition. Always follow the inspection
and maintenance procedures and schedules described in the Owner’s Manual.
WARNING
EWA11152
Failure to inspect or maintain the vehicle properly increases the possibility of an acci dent or equipment damag e.
Do not operate the vehicle if you fin d any pro blem. If a pro blem cannot b e corrected b y the proce dures provi ded in
this manual, have the vehicle inspecte d b y a Yamaha dealer.Before using this vehicle, check the following points:
ITEM CHECKS PAGE
Fuel • Check fuel level in fuel tank.
• Refuel if necessary.
• Check fuel line for leakage.
• Check fuel tank overflow hose for obstructions, cracks or damage, and check
hose connection. 4-22, 4-23
En gine oil • Check oil level in engine.
• If necessary, add recommended oil to specified level.
• Check vehicle for oil leakage. 7-10
Coolant • Check coolant level in reservoir.
• If necessary, add recommended coolant to specified level.
• Check cooling system for leakage. 7-13
Front brake • Check operation.
• If soft or spongy, have Yamaha dealer bleed hydraulic system.
• Check brake pads for wear.
• Replace if necessary.
• Check fluid level in reservoir.
• If necessary, add specified brake fluid to specified level.
• Check hydraulic system for leakage. 7-19, 7-20
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Operation and important rid ing points
6-2
6
EAU91411
Startin g the eng ineThe ignition circuit cut-off system will
enable starting when:
 the transmission is in the neutral
position or
 the transmission is in gear, the
sidestand is up, and the clutch le-
ver is pulled.
To start the engine1. Turn the main switch on and set the engine stop switch to the run
position.
2. Confirm the indicator and warning light(s) come on for a few sec-
onds, and then go off. (See page
4-5.)TIPDo not start the engine if the mal-
function indicator light remains on.
 The oil pressure and coolant tem-
perature warning light should
come on and stay on until the en-
gine is started. 
The ABS warning light should
come on and stay on until the ve-
hicle reaches a speed of 5 km/h (3
mi/h).
NOTICE
ECA24110
If a warnin g or in dicator li ght does
not work as d escribed a bove, have a
Yamaha dealer check the vehicle.3. Shift the transmission into the
neutral position.
4. Start the engine by pushing the start switch.
5. Release the start switch when the engine starts, or after 5 seconds.
Wait 10 seconds before pressing
the switch again to allow battery
voltage to restore.TIPIf the engine fails to start, try again with
the throttle grip turned by a 1/4 turn (20
degrees) open.
NOTICE
ECA11043
For maximum en gine life, never ac-
celerate har d when the en gine is
col d!1. 1/4 turn (20 degrees)
1 1 1
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Periodic maintenance an d a djustment
7-7
7
20 *Sidestan d switch • Check operation and replace if
necessary. √√√√√√
21 *Front fork • Check operation and for oil leak-
age.
• Replace if necessary. √√√√
22 *Shock a
bsor ber as-
sem bly • Check operation and for oil leak-
age.
• Replace if necessary. √√√√
23 *Rear suspension re-
lay arm an
d con-
nectin g arm
pivotin g points • Check operation.
√√√√
24 En gine oil • Change (warm engine before
draining).
• Check oil level and vehicle for oil leakage. √√√√√√
25 En
gine oil filter car-
tri dge • Replace.
√√√
26 *Coolin g system • Check coolant level and vehicle
for coolant leakage. √√√√√
• Change. Every 3 years
27 *Front an
d rear
b rake switches • Check operation.
√√√√√√
28 *Movin
g parts an d
cab les • Lubricate.
√√√√√
29 *Throttle grip • Check operation.
• Lubricate throttle grip housing
tube guides. √√√√√
NO. ITEM CHECK OR MAINTENANCE JOB
OD
OME T ER READING
ANNUAL
CHECK
1000 km
(600 mi) 10000 km
(6000 mi) 20000 km
(12000 mi) 30000 km
(18000 mi) 40000 km
(24000 mi)
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Periodic maintenance an d a djustment
7-13
7
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 distilled
water 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
reservoir.
3. If the coolant is at or below the mi- nimum level mark, remove the
coolant reservoir cap. WARNING!
Remove only the coolant reser-
voir cap. Never attempt to re-
move the ra diator cap when the
en gine is hot.
[EWA15162]
4. Add coolant to the maximum level
mark. NOTICE: If coolant is not
availa ble, use d istilled water or
soft tap water instead . Do not
use har d water or salt water
since it is harmful to the en gine.
If water has been used instead
of coolant, replace it with cool-
ant as soon as possi ble, other-
wise the coolin g system will not
b e protecte d a gainst frost an d
corrosion. If water has been
a dde d to the coolant, have a
Yamaha dealer check the anti-
freeze content of the coolant as
soon as possi ble, otherwise the
effectiveness of the coolant will
b e re duce d.
[ECA10473]
Recommen ded coolant:
YAMALUBE coolant
Coolant quantity: Coolant reservoir (max level mark):0.28 L (0.30 US qt, 0.25 Imp.qt)
Radiator (including all routes): 1.72 L (1.82 US qt, 1.51 Imp.qt)
1. Coolant reservoir
2. Maximum level mark
3. Minimum level mark
1 1 1
2
3 2
3
1. Coolant reservoir cap
1 1 1
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Periodic maintenance an d a djustment
7-14
7
5. Install the coolant reservoir cap.
EAU33032
Chan
gin g the coolant
The coolant must be changed at the in-
tervals specified in the periodic main-
tenance and lubrication chart. Have a
Yamaha dealer change the coolant.
WARNING! Never attempt to remove the ra diator cap when the en gine is
hot.
[EWA10382] EAU36765
Air filter elementThe air filter element must be replaced
at the intervals specified in the periodic
maintenance and lubrication chart.
Have a Yamaha dealer replace the air
filter element.
EAU44735
Checkin
g the en gine i dlin g
spee dCheck the engine idling speed and, if
necessary, have it corrected by a
Yamaha dealer.
Engine i dlin g spee d:
1200–1400 r/min
UB7NE0E0.book Page 14 Friday, October 2, 2020 4:38 PM