2020 YAMAHA NIKEN GT engine overheat

Instrument and control functions
3-6
3
el warning light will flash repeatedly. If
this occurs, have a Yamaha dealer
check the vehicle.
TIPWhen the vehicle is turned on, the light
will come on for a few seconds and
then go off. If the light does not come
on, or if the light remains on after con-
firming that the oil level is correct (see
page 6-11), have a Yamaha dealer
check the vehicle.
EAU58402
Cruise control in
dicator li ghts “ ”
an d “SET”
These indicator lights come on when
the cruise control system is activated.
(See page 3-8.)TIPWhen the vehicle is turned on, these
lights should come on for a few sec-
onds and then go off. If the lights do
not come on, have a Yamaha dealer
check the vehicle.
EAU11449
Coolant temperature warnin g
li g ht “ ”
This warning light comes on when the
engine is overheating. If this occurs,
stop the engine immediately and allow
the engine to cool. (See page 6-36.)
For vehicles with a radiator fan, the ra-
diator fan(s) automatically switch on or
off according to the coolant tempera-
ture.TIPWhen the vehicle is turned on, the light
will 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
ECA10022
Do not continue to operate the en-
g ine if it is overheatin g.
EAU79311
En gine trou ble warnin g li ght “ ”
This warning light comes on if a prob-
lem is detected in the engine. If this oc-
curs, have a Yamaha dealer check the
on-board diagnostic 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.
EAU69895
ABS warnin g lig ht “ ”
This warning light comes on when the
vehicle is first turned on, and goes off
after starting riding. If the warning light
comes on while riding, the anti-lock
brake system may not work correctly.
WARNING
EWA16043
If the ABS warnin g li ght does not
turn off after reachin g 10 km/h (6
mi/h), or if the warnin g li ght comes
on while ri din g:
 Use extra caution to avoi d pos-
si ble wheel lock durin g emer-
g ency brakin g.
 Have a Yamaha dealer check
the vehicle as soon as possi ble.
ABS
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Operation and important ri din g points
5-1
5
EAU15952
Read the Owner’s Manual carefully to
become familiar with all controls. If
there is a control or function you do not
understand, ask your Yamaha dealer.
WARNING
EWA10272
Failure to familiarize yourself with
the controls can lead to loss of con-
trol, which coul d cause an acci dent
or injury.
EAU16842
En gine break-inThere is never a more important period
in the life of your engine than the period
between 0 and 1600 km (1000 mi). For
this reason, you should read the fol-
lowing material carefully.
Since the engine is brand new, do not
put an excessive load on it for the first
1600 km (1000 mi). The various parts in
the engine wear and polish themselves
to the correct operating clearances.
During this period, prolonged full-throt-
tle operation or any condition that
might result in engine overheating
must be avoided.
EAU17094
0–1000 km (0–600 mi)
Avoid prolonged operation above 5600
r/min. NOTICE: After 1000 km (600
mi) of operation, the en gine oil must
b e chan ged an d the oil filter car-
tri dge or element replace d.
[ECA10303]
1000–1600 km (600–1000 mi)
Avoid prolonged operation above 6700
r/min. 1600 km (1000 mi) an
d b eyon d
The vehicle can now be operated nor-
mally.
NOTICE
ECA10311
 Keep the en gine spee d out of
the tachometer red zone.
 If any en gine trou ble shoul d oc-
cur during the en gine break-in
perio d, imme diately have a
Yamaha dealer check the vehi-
cle.
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Periodic maintenance an d a djustment
6-36
6
EAU86420
En gine overheatin g
WARNING
EWAT1041
Do not remove the ra diator cap when the en gine an d ra diator are hot. Scal din g hot flui d an d steam may be
b lown out un der pressure, which coul d cause serious injury. Be sure to wait until the en gine has coole d.
 Place a thick ra g, like a towel, over the ra diator cap, an d then slowly rotate the cap counterclockwise to the
d etent to allow any resi dual pressure to escape. When the hissin g soun d has stoppe d, press down on the cap
while turnin g it counterclockwise, an d then remove the cap.TIPIf coolant is not available, tap water can be temporarily used instead, provided that it is changed to the recommended cool-
ant as 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.
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10-1
10
Index
AABS....................................................... 3-21
ABS warning light ................................... 3-6
Air filter element.................................... 6-15
Auxiliary DC jacks................................. 3-33BBattery .................................................. 6-30
Brake and clutch levers, checking and
lubricating........................................... 6-27
Brake and shift pedals, checking and lubricating........................................... 6-26
Brake fluid, changing............................ 6-23
Brake fluid level, checking.................... 6-22
Brake lever............................................ 3-20
Brake lever free play, checking ............ 6-20
Brake light switches ............................. 6-20
Brake pedal .......................................... 3-21CCables, checking and lubricating ......... 6-25
Canister ................................................ 6-11
Care ........................................................ 7-1
Catalytic converter ............................... 3-27
Centerstand and sidestand, checking
and lubricating ................................... 6-27
Clutch lever........................................... 3-19
Clutch lever free play, adjusting ........... 6-19
Coolant ................................................. 6-14
Coolant temperature warning light ......... 3-6
Cruise control indicator lights................. 3-6
Cruise control switches .......................... 3-4
Cruise control system............................. 3-8DData recording, vehicle........................... 9-2
Diagnostic connector ............................. 9-2 Dimmer/Pass switch .............................. 3-4
D-mode (drive mode) ........................... 3-18
Drive chain, cleaning and lubricating ... 6-25
Drive chain slack .................................. 6-23
Drive mode switch ................................. 3-5
EEngine break-in ...................................... 5-1
Engine idling speed, checking ............. 6-15
Engine oil.............................................. 6-11
Engine overheating .............................. 6-36
Engine serial number ............................. 9-1
Engine trouble warning light .................. 3-6FFront and rear brake pads, checking ... 6-21
Front fork, adjusting ............................. 3-30
Front fork, checking ............................. 6-28
Fuel ...................................................... 3-25
Fuel consumption, tips for reducing ...... 5-4
Fuel tank cap........................................ 3-24
Fuel tank overflow hose ....................... 3-26
Fuses, replacing ................................... 6-31HHandlebar switches ............................... 3-3
Hazard switch ........................................ 3-4
Helmet holding cable ........................... 3-29
High beam indicator light ....................... 3-5
Horn switch ............................................ 3-4IIdentification numbers ........................... 9-1
Ignition circuit cut-off system .............. 3-35
Immobilizer system ................................ 3-1
Immobilizer system indicator light ......... 3-7
Indicator lights and warning lights ......... 3-5
MMain switch/steering lock ....................... 3-2
Maintenance and lubrication, periodic ... 6-5
Maintenance, emission control
system .................................................. 6-3
Matte color, caution................................ 7-1
MENU switch .......................................... 3-4
Model label ............................................. 9-1
Multi-function meter unit ...................... 3-11NNeutral indicator light ............................. 3-5OOil level warning light .............................. 3-5PPanel, removing and installing ................ 6-9
Parking.................................................... 5-5
Part locations.......................................... 2-1QQuick shift system ................................ 3-20RRear view mirrors .................................. 3-30SSafety information................................... 1-1
Seats ..................................................... 3-27
SELECT switch ....................................... 3-5
Shift indicator light .................................. 3-7
Shifting.................................................... 5-3
Shift pedal............................................. 3-19
Shock absorber assembly, adjusting ... 3-32
Sidestand.............................................. 3-34
Spark plugs, checking .......................... 6-10
Specifications ......................................... 8-1
Starting the engine ................................. 5-2
Steering bearings, lubricating ............... 6-29
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