2021 YAMAHA TRACER 900 engine

Special features
3-5
3
The traction control system can
only be turned off by setting “TCS-
MODE” to “OFF”, using the MODE
switches. See page 4-4 for more
information on “TCS-MODE”.
 When “TCS-MODE” has been set
to “OFF”, the TCS, SCS and LIF
systems are all turned off togeth-
er.
WARNING
EWA15433
The traction control system is not a
substitute for riding appropriately
for the conditions. Traction control
cannot prevent loss of traction due
to excessive speed when entering
turns, when accelerating hard at a
sharp lean angle, or while braking,
and cannot prevent front wheel slip-
ping. As with any vehicle, approach
surfaces that may be slippery with
caution and avoid especially slip-
pery surfaces.When the vehicle power is on, the trac-
tion control system automatically turns
on. The traction control system can be turned on or off manually only when
the key is in the “ON” position and the
motorcycle is stopped.
TIPSet “TCS-MODE” to “OFF” to help free
the rear wheel if the motorcycle gets
stuck in mud, sand, or other soft sur-
faces.NOTICE
ECA16801
Use only the specified tires. (See
page 7-15.) Using different sized
tires will prevent the traction control
system from controlling tire rotation
accurately.SCS
The slide control system regulates en-
gine power output when a sideward
slide is detected in the rear wheel. It
adjusts power output based on data
from the IMU (Inertial Measurement
Unit). This system supports the TCS to
contribute to a smoother ride.
LIF
The lift control system reduces the rate
at which the front wheel rises during
extreme acceleration, such as during
starts or out-of-corner exits. When
front-wheel lift is detected, engine
power is regulated to slow front-wheel
lift while still providing good accelera-
tion.
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Special features
3-6
3
EAU92820
QSS (if equipped)The quick shift system allows for clutch
lever-less, electronically-assisted shift-
ing. When the sensor on the shift rod
detects the appropriate motion in the
shift pedal, engine power output is mo-
mentarily adjusted to allow for the gear
change to occur.
QSS does not operate when the clutch
lever is pulled, therefore normal shifting
can be done even when QSS is set to
on. Check the QS indicator for current
status and usability information.
Upshifting conditions
 Vehicle speed of at least 20 km/h
(12 mi/h)
 Engine speed of at least 2200
r/min
 Accelerating (open throttle)
Downshiftin g con ditions 
Vehicle speed of at least 20 km/h
(12 mi/h)
 Engine speed of at least 2000
r/min
 Engine speed sufficiently away
from red zone
 Decelerating and throttle fully-
closed
TIPQS and QS can be individ-
ually set.
 Shifting into or out of neutral must
be done using the clutch lever.
EAU91350
BCThe brake control system regulates hy-
draulic brake pressure for the front and
rear wheels when the brakes are ap-
plied and wheel lock is detected. This
system has two settings.
BC1 is standard ABS, which adjusts
brake pressure based on vehicle
speed and wheel speed data. BC1 is
designed to engage and maximize
braking when the vehicle is upright.
BC2 uses additional data from the IMU
to regulate applied brake power when
cornering to suppress lateral wheel
slip.
QSS usa bility In dicator
Upshifting OK
Downshifting OK
QSS cannot be used QSS turned off
ABS
BC1/BC2 BC2 BC2
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Instrument and control functions
4-2
4
EAU10474
Main switch/steerin g lockThe main switch/steering lock controls
the ignition and lighting systems, and is
used to lock the steering. The various
positions are described below.TIPBe sure to use the standard key (black
bow) for regular use of the vehicle. To
minimize the risk of losing the code re-
registering key (red bow), keep it in a
safe place and only use it for code re-
registering.
EAU84031
ON
All electrical circuits are supplied with
power and the vehicle lights are turned
on. The engine can be started. The key
cannot be removed.TIP The headlight(s) will turn on when
the engine is started.
 To prevent battery drain, do not
leave the key in the on position
without the engine running.
EAU10662
OFF
All electrical systems are off. The key
can be removed.
WARNING
EWA10062
Never turn the key to “OFF” or
“LOCK” while the vehicle is movin g.
Otherwise the electrical systems will
b e switche d off, which may result in
loss of control or an acci dent.
EAU73800
LOCK
The steering is locked and all electrical
systems are off. The key can be re-
moved.
To lock the steering1. Turn the handlebars all the way to
the left.
2. With the key in the “OFF” position, push the key in and turn it to
“LOCK”.
3. Remove the key.
ON
OFF
LOCK
1. Push.
2. Turn.12
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Instrument and control functions
4-4
4
EAU66040
Turn si gnal switch “ / ”
To signal a right-hand turn, push this
switch to “ ”. To signal a left-hand
turn, push this switch to “ ”. When
released, the switch returns to the cen-
ter position. To cancel the turn signal
lights, push the switch in after it has re-
turned to the center position.
EAU66030
Horn switch “ ”
Press this switch to sound the horn.
EAU66061
Stop/Run/Start switch “ / / ”
To crank the engine with the starter,
set this switch to “ ”, and then push
the switch down towards “ ”. See
page 6-2 for starting instructions prior
to starting the engine.
Set this switch to “ ” to stop the en-
gine in case of an emergency, such as
when the vehicle overturns or when the
throttle cable is stuck.
EAU91670
Hazar d switch “ ”
Use this switch to turn on the hazard
lights (simultaneous flashing of all turn
signal lights). The hazard lights are
used in case of an emergency or to
warn other drivers when your vehicle is
stopped where it might be a traffic haz-
ard.
The hazard lights can be turned on or
o f f o n ly w he n the k e y is i n t he “ ON ” p o -
sition. You can turn the main switch to
the “OFF” or “LOCK” position, and the
hazard lights will continue to flash. To
turn off the hazard lights, turn the main
switch to the “ON” position and oper-
ate the hazard switch again.
NOTICE
ECA10062
Do not use the hazard lights for an
exten ded len gth of time with the en-
g ine not runnin g, otherwise the bat-
tery may dischar ge.
EAU73952
Cruise control switches
See page 3-1 for an explanation of the
cruise control system.
EAU91363
MODE switches
Use the MODE switches to change the
“D-MODE” and “TCS-MODE” located
on the left side of the main display.
There are three mode controls:
MODE up switch - push this switch to
change the selected mode setting up-
ward.
“MODE” switch - push this switch to
toggle left to right between “D-MODE”
and “TCS-MODE”.
MODE down switch - push this switch
to change the selected mode setting
downward.
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Instrument and control functions
4-7
4
TIPWhen the vehicle is turned on, these
lights should come on for a few sec-
onds and then go off. Otherwise, have
a Yamaha dealer check the vehicle.
EAU91840
Malfunction ind icator light
(MIL) “ ”
This light comes on or flashes 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 electri-
cal circuit of the warning light can be
checked by turning the vehicle power
on. The light should come on for a few
seconds, and then go off. If the light
does not come on initially when the ve-
hicle power is turned on, or if the light
remains on, have a Yamaha dealer
check the vehicle.NOTICE
ECA26820
If the MIL starts flashin g, re duce en-
g ine spee d to prevent exhaust sys-
tem damag e.
TIPThe engine is sensitively monitored by
the on-board diagnostic system to de-
tect deterioration or malfunction of the
emission control system. Therefore the
MIL may come on or flash due to vehi-
cle modifications, lack of maintenance,
or excessive/improper use of the mo-
torcycle. To prevent this, observe
these precautions.
 Do not attempt to modify the soft-
ware of the engine control unit.
 Do not add any electrical acces-
sories that interfere with engine
control.
 Do not use aftermarket accesso-
ries or parts such as suspension,
spark plugs, injectors, exhaust
system, etc.
 Do not change the drivetrain
specifications (chain, sprockets,
wheels, tires, etc.).
 Do not remove or alter the O2 sen-
sor, air induction system, or ex-
haust parts (catalysts or EXUP,
etc.).
 Maintain the drive chain properly.
 Maintain correct tire pressure. 
Maintain proper brake pedal
height to prevent rear brake from
dragging.
 Do not operate the vehicle in an
extreme manner. For example, re-
peated or excessive opening and
closing of the throttle, racing,
burnouts, wheelies, extended
half-clutch use, etc.
EAU92700
ABS warnin g lig ht “ ”
In normal operation, the ABS warning
light comes on when the vehicle is
turned on, and goes off after traveling
at a speed of 5 km/h (3 mi/h) or higher.TIPIf the warning light does not work as
described above, or if the warning light
comes on while riding, the ABS may
not work correctly. Have a Yamaha
dealer check the vehicle as soon as
possible.
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Instrument and control functions
4-8
4
WARNING
EWA21120
If the ABS warnin g lig ht does not
turn off after reachin g 5 km/h (3
mi/h), or if the warnin g li ght comes
on while rid ing:
 Use extra caution to avoi d pos-
si ble wheel lock d uring emer-
g ency brakin g.
 Have a Yamaha dealer check
the vehicle as soon as possi ble.
EAU92710
Immo bilizer system in dicator
li g ht “ ”
When the main switch is turned off and
30 seconds have passed, the indicator
light will flash steadily to indicate the
immobilizer system is enabled. After 24
hours have passed, the indicator light
will stop flashing, however the immobi-
lizer system is still enabled.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.
Transpon der interference
If the immobilizer system indicator light
flashes in the pattern, slowly 5 times
then quickly 2 times, this could be
caused by transponder interference. If
this occurs, try the following. 1. Make sure there are no other im- mobilizer keys close to the main
switch.
2. Use the code re-registering key to start the engine.
3. If the engine starts, turn it off, and try starting the engine with the
standard keys.
4. If one or both of the standard keys do not start the engine, take the
vehicle and all 3 keys to a Yamaha
dealer to have the standard keys
re-registered.
EAU92720
Sta bility control in dicator li ght “ ”
This indicator light flashes when the
TCS, SCS, or LIF systems engage
while riding. When “TCS-MODE” is set
to “OFF”, the indicator will come on.
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.
EAU92751
Oil pressure an d Coolant tempera-
ture warnin g lig ht “ ”
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.
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Instrument and control functions
4-9
4

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 go 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 7-36).
 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 dealer check
the vehicle. Do not continue to
operate the vehicle!
EAU92731
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.
EAU92804
DisplaysThis vehicle is equipped with two dis-
play screens: a main display and a
sub-display
The following items can be found on
the displays:1. Speedometer
2. Tachometer
3. Quick shift indicator “QS” (if equipped)
4. Transmission gear display
5. Vehicle information displays
6. Settings MENU icon “ ”
7. Grip warmer indicator (if equipped)
8. Seat heater indicator (if equipped)
9. Brake control icon “BC”
10.Clock
11.MODE display
4
7
6
1011
9
35
8
12
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Instrument and control functions
4-10
4
TIP This model uses thin-film-transis-
tor liquid-crystal displays (TFT
LCD) for good contrast and read-
ability in various lighting condi-
tions. However, due to the nature
of this technology, it is normal for
a small number of pixels to be in-
active.
 The display units can be switched
between kilometers/miles and cel-
sius/farenheit. See “Unit” on page
4-20.
WARNING
EWA18210
Stop the vehicle before makin g any
settin g chan ges. Chan gin g settin gs
while rid ing can d istract the opera-
tor an d increase the risk of an acci-
d ent.Speed ometer
The speedometer shows the vehicle’s
traveling speed. 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 d isplays
1. Lap timer
2. Oil pressure warning “ ”
3. Coolant temperature warning “ ”
4. Auxiliary system warning “ ”
5. Error mode warning “Err” (replaces clock
when activated)
1. Vehicle information displays
LAP
02
LATEST
00:12.3 4
00:01.23
1
4 3
2
5
1
1. Vehicle information displays
1
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