2020 YAMAHA NIKEN GT Owners Manual

Periodic maintenance an d a djustment
6-30
6
EAU84970
Checkin g the wheel bearin gsThe front and rear wheel bearings must
be checked by a Yamaha dealer at the
intervals specified in the periodic main-
tenance chart.
EAU50212
BatteryThe battery is located under the rider
seat. (See page 3-27.)
This model is equipped with a VRLA
(Valve Regulated Lead Acid) battery.
There is no need to check the electro-
lyte or to add distilled water. However,
the battery lead connections need to
be checked and, if necessary, tight-
ened.
WARNING
EWA10761
 Electrolyte is poisonous an d
d an gerous since it contains sul-
furic aci d, which causes severe b
urns. Avoi d any contact with
skin, eyes or clothin g an d al-
ways shiel d your eyes when
workin g near b atteries. In case
of contact, ad minister the fol-
lowin g FIRST AID.
EXTERNAL: Flush with plenty of water.
INTERNAL: Drink lar ge quan-
tities of water or milk an d im-
me diately call a physician.
EYES: Flush with water for 15 minutes an d seek prompt
me dical attention.
 Batteries pro duce explosive hy-
d ro gen gas. Therefore, keep
sparks, flames, ci garettes, etc.,
away from the battery an d pro-
vi de sufficient ventilation when
char gin g it in an enclose d
space.
 KEEP THIS AND ALL BATTER-
IES OUT OF THE REACH OF
CHILDREN.
To char ge the b attery
Have a Yamaha dealer charge the bat-
tery as soon as possible if it seems to
have discharged. Keep in mind that the
1. Battery
2. Positive battery lead (red)
3. Negative battery lead (black)2 1
3
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Periodic maintenance an d a djustment
6-31
6 battery tends to discharge more quick-
ly if the vehicle is equipped with op-
tional electrical accessories.
NOTICE
ECA16522
To char
ge a VRLA (Valve Re gulate d
Lea d Aci d) battery, a special (con-
stant-volta ge) battery char ger is re-
quire d. Usin g a conventional battery
char ger will damag e the b attery.To store the b attery
1. If the vehicle will not be used for more than one month, remove the
battery, fully charge it, and then
place it in a cool, dry place.
NOTICE: When removin g the
b attery, be sure to turn the main
switch off, then disconnect the
ne gative lea d before discon-
nectin g the positive lea d.
[ECA16304]
2. If the battery will be stored for
more than two months, check it at
least once a month and fully char-
ge it if necessary.
3. Fully charge the battery before installation. NOTICE: When in-
stallin g the battery, be sure to
turn the main switch off, then connect the positive lea
d b efore
connectin g the ne gative lea d.
[ECA16842]
4. After installation, make sure that
the battery leads are properly con-
nected to the battery terminals.NOTICE
ECA16531
Always keep the b attery charged .
Storin g a d ischar ged battery can
cause permanent battery damag e.
EAU84650
Replacin g the fusesThe fuse boxes and individual fuses
are located under the rider seat (see
page 3-27) and behind panel A (see
page 6-9).
To access fuse box 1, the main fuse,
and the ABS motor fuse, remove the
rider seat. (See page 3-27.)1. ABS motor spare fuse
2. ABS motor fuse
3. Fuse box 1
4. Main fuse
1 2
34
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Periodic maintenance an d a djustment
6-32
6
TIPTo access the ABS motor fuse, remove
the starter relay cover by pulling it up-
ward.
To access fuse box 2, fuse box 3, the
brake light fuse, and the cruise control
fuse, remove panel A. (See page 6-9.)
If a fuse is blown, replace it as follows.1. Turn the main switch off and turn off the electrical circuit in ques-
tion.
2. Remove the blown fuse, and then install a new fuse of the specified
amperage. WARNING! Do not
use a fuse of a hi gher ampera ge
ratin g than recommen ded to
1. Fuel injection system fuse
2. ABS solenoid fuse
3. Electronic throttle valve fuse
4. Backup fuse (for clock and immobilizer sys-
tem)
5. Heater fuse
6. Spare fuse
1234
65
1. Starter relay cover
2. ABS motor spare fuse
3. ABS motor fuse
1. Fuse box 2
2. Fuse box 3
3. Cruise control fuse
4. Brake light fuse
2 3
1
2
3
41
1. Signaling system fuse
2. ABS control unit fuse
3. Accessory fuse
4. Ignition fuse
5. Hazard fuse
6. Terminal fuse 1 (for auxiliary DC jack)
7. Terminal fuse 2 (for auxiliary DC jack)
8. Headlight fuse
9. Right radiator fan motor fuse
10.Left radiator fan motor fuse
11.Spare fuse
11 1
2
3
11
10 9876 5 4
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Periodic maintenance an d a djustment
6-33
6 avoi
d causin g extensive d am-
a g e to the electrical system an d
possi bly a fire.
[EWA15132]
3. Turn the main switch 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.
EAU72980
Vehicle lig htsThis model is equipped with full-LED
lighting. There are no user replaceable
bulbs.
If a light does not come on, check the
fuses and then have a Yamaha dealer
check the vehicle.NOTICE
ECA16581
Do not affix any type of tinte d film or
stickers to the hea dlig ht lens.
Specifie d fuses:
Main fuse: 50.0 A
ABS motor fuse:
30.0 A
Cruise control fuse: 1.0 A
Brake light fuse: 1.0 A
Specifie d fuses (fuse box 1):
Fuel injection system fuse: 25.0 A
ABS solenoid fuse: 20.0 A
Electronic throttle valve fuse:
7.5 A
Backup fuse: 7.5 A
Heater fuse: 10.0 A
Specifie d fuses (fuse box 2):
Signaling system fuse:
7.5 A
ABS control unit fuse:
5.0 A
Accessory fuse: 5.0 A
Ignition fuse: 15.0 A
Specifie d fuses (fuse box 3):
Hazard fuse: 7.5 A
Te r m i n a l f u s e 1 : 2.0 A
Te r m i n a l f u s e 2 :
2.0 A
Radiator fan motor fuse: 10.0 A × 2
Headlight fuse: 10.0 A
1. Auxiliary light
2. Headlight (low beam)
3. Headlight (high beam)
1
2
3
1
2
3
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Periodic maintenance an d a djustment
6-34
6
EAU25872
Trou bleshootin gAlthough Yamaha motorcycles receive
a thorough inspection before shipment
from the factory, trouble may occur
during operation. Any problem in the
fuel, compression, or ignition systems,
for example, can cause poor starting
and loss of power.
The following troubleshooting charts
represent quick and easy procedures
for checking these vital systems your-
self. However, should your motorcycle
require any repair, take it to a Yamaha
dealer, whose skilled technicians have
the necessary tools, experience, and
know-how to service the motorcycle
properly.
Use only genuine Yamaha replace-
ment parts. Imitation parts may look
like Yamaha parts, but they are often
inferior, have a shorter service life and
can lead to expensive repair bills.
WARNING
EWA15142
When checkin g the fuel system, d o
not smoke, an d make sure there are
no open flames or sparks in the ar-
ea, inclu din g pilot li ghts from water heaters or furnaces. Gasoline or
g
asoline vapors can i gnite or ex-
plo de, causin g severe injury or prop-
erty damag e.
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Periodic maintenance an d a djustment
6-35
6
EAU86350
Trou bleshootin g chart
Check the fuel level in
the fuel tank.1. Fuel
There is enough fuel.
There is no fuel.
Check the battery.
Supply fuel.
The engine does not start.
Check the battery.
Try starting the engine.4. Compression
There is compression.
There is no compression.
The engine does not start.
Have a Yamaha dealer check the vehicle.Have a Yamaha dealer check the vehicle.
Remove the spark plug
and check the electrodes.3. Ignition
Wipe off with a dry cloth and correct the
spark plug gap, or replace the spark plug(s). Have a Yamaha dealer check the vehicle.
The engine does not start.
Check the compression.
Operate the electric starter.2. Battery
The engine turns over
quickly.
The engine turns over
slowly.
The battery is good.
DryWet
Try starting the engine.
Check the battery lead connections,
and charge the battery if necessary.
The engine does not start.
Check the ignition.
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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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Motorcycle care and stora ge
7-1
7
EAU37834
Matte color cautionNOTICE
ECA15193
Some mo dels are equipped with
matte colore d finishe d parts. Be
sure to consult a Yamaha d ealer for
a d vice on what prod ucts to use be-
fore cleanin g the vehicle. Usin g a
b rush, harsh chemical prod ucts or
cleanin g compoun ds when cleanin g
these parts will scratch or damag e
their surface. Wax also shoul d not
b e applied to any matte colore d fin-
ishe d parts.
EAU83443
CareFrequent, thorough cleaning of the ve-
hicle will not only enhance its appear-
ance but also will improve its general
performance and extend the useful life
of many components. Washing, clean-
ing, and polishing will also give you a
chance to inspect the condition of the
vehicle more frequently. Be sure to
wash the vehicle after riding in the rain
or near the sea, because salt is corro-
sive to metals.TIP The roads of heavy snowfall areas
may be sprayed with salt as a de-
icing method. This salt can stay on
the roads well into spring, so be
sure to wash the underside and
chassis parts after riding in such
areas.
 Genuine Yamaha care and main-
tenance products are sold under
the YAMALUBE brand in many
markets worldwide.
 See your Yamaha dealer for addi-
tional cleaning tips.
NOTICE
ECA26280
Improper cleanin g can cause cos-
metic an d mechanical damag e. Do
not use:  high-pressure washers or
steam-jet cleaners. Excessive
water pressure may cause wa-
ter seepa ge an d d eterioration of
wheel bearin gs, brakes, trans-
mission seals an d electrical d e-
vices. Avoi d hi gh-pressure
d eter gent applications such as
those availa ble in coin-operate d
car washers.
 harsh chemicals, inclu din g
stron g aci dic wheel cleaners,
especially on spoke or ma gne-
sium wheels.
 harsh chemicals, ab rasive
cleanin g compoun ds, or wax on
matte-finishe d parts. Brushes
can scratch an d damag e the
matte-finish, use soft spon ge or
towel only.
 towels, spon ges, or brushes
contaminated with abrasive
cleanin g prod ucts or stron g
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