2018 YAMAHA NIKEN warning

Instrument and control functions
3-24
3
TIPThe fuel tank cap cannot be closed un-
less the key is in the lock. In addition,
the key cannot be removed if the cap is
not properly closed and locked.
WARNING
EWA11092
Make sure that the fuel tank cap is
properly closed after filling fuel.
Leakin g fuel is a fire hazar d.
EAU13222
FuelMake sure there is sufficient gasoline in
the tank.
WARNING
EWA10882
Gasoline an d gasoline vapors are
extremely flammab le. To avoid fires
an d explosions an d to re duce the
risk of injury when refueling , follow
these instructions.1. Before refueling, turn off the en- gine and be sure that no one is sit-
ting on the vehicle. Never refuel
while smoking, or while in the vi-
cinity of sparks, open flames, or
other sources of ignition such as
the pilot lights of water heaters
and clothes dryers.
2. Do not overfill the fuel tank. When refueling, be sure to insert the
pump nozzle into the fuel tank filler
hole. Stop filling when the fuel
reaches the bottom of the filler
tube. Because fuel expands when
it heats up, heat from the engine or
the sun can cause fuel to spill out
of the fuel tank. 3. Wipe up any spilled fuel immedi-
ately. NOTICE: Immediately
wipe off spille d fuel with a clean,
d ry, soft cloth, since fuel may
d eteriorate painte d surfaces or
plastic parts.
[ECA10072]
4. Be sure to securely close the fuel tank cap.
WARNING
EWA15152
Gasoline is poisonous an d can
cause injury or death. Han dle gaso-
line with care. Never siphon gasoline
b y mouth. If you shoul d swallow
some gasoline or inhale a lot of g as-
oline vapor, or get some gasoline in
your eyes, see your doctor imme di-1. Fuel tank filler tube
2. Maximum fuel level
1
2
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Instrument and control functions
3-26
3
EAU80200
Fuel tank overflow hoseBefore operating the vehicle:
 Check the fuel tank overflow hose
connection.
 Check the fuel tank overflow hose
for cracks or damage, and replace
it if necessary.
 Make sure that the end of the fuel
tank overflow hose is not blocked,
and clean it if necessary.
 Make sure that the end of the fuel
tank overflow hose is positioned
as shown.
TIPSee page 6-11 for canister information.
EAU13434
Catalytic converterThis model is equipped with a catalytic
converter in the exhaust system.
WARNING
EWA10863
The exhaust system is hot after op-
eration. To prevent a fire hazar d or
b urns:
 Do not park the vehicle near
possi ble fire hazar ds such as
g rass or other materials that
easily burn.
 Park the vehicle in a place
where pe destrians or chil dren
are not likely to touch the hot
exhaust system.
 Make sure that the exhaust sys-
tem has coole d down before
d oin g any maintenance work.
 Do not allow the en gine to i dle
more than a few minutes. Lon g
i d lin g can cause a b uild-up of
heat.
1. Fuel tank overflow hose
2. Guide
3. Paint mark
321
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Instrument and control functions
3-29
3
3. Pass the helmet holding cablethrough the buckle on the helmet
strap.
4. Loop the ends of the helmet hold- ing cable around the projection on
the passenger seat.
5. Install the passenger seat. WARNING! Never ri de with a
helmet attached to the helmet
hol der, since the helmet may hit
o bjects, causin g loss of control
an d possi bly an acci dent.
[EWA10162] EAU14465
Stora
ge compartmentThe storage compartment is located
under the passenger seat. (See page
3-27.)
When storing documents or other
items in the storage compartment, be
sure to wrap them in a plastic bag so
that they will not get wet. When wash-
ing the vehicle, be careful not to let any
water enter the storage compartment.
WARNING
EWA10962
 Do not exceed the load limit of
1.5 k g (3 l b) for the stora ge com-
partment. 
Do not exceed the maximum
loa d of 195 k g (430 l b) for the ve-
hicle.
1. Storage pouch
1
1. Storage compartment
1
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Instrument and control functions
3-30
3
EAU39672
Rear view mirrorsThe rear view mirrors of this vehicle
can be folded forward or backward for
parking in narrow spaces. Fold the mir-
rors back to their original position be-
fore riding.
WARNING
EWA14372
Be sure to fol d the rear view mirrors
b ack to their ori ginal position before
ri din g.
EAU84600
A djustin g the front fork
WARNING
EWA10181
Always a djust both fork le gs equally,
otherwise poor han dlin g an d loss of
sta bility may result.Each side of the front fork is equipped
with a rebound damping force adjust-
ing screw and compression damping
force adjusting screw.
 When adjusting the damping force
settings, turn the adjuster in direc-
tion (a) until it stops, and then
count the clicks in direction (b).
 When turning a damping force ad-
juster in direction (a), the stop po-
sition and the 1 click position may
be the same.
 Although a damping force adjust-
er may click beyond the stated
minimum settings, such adjust-
ments are ineffective and may
damage the suspension.
NOTICE
ECA10102
To avoi d d amag ing the mechanism,
d o not attempt to turn beyon d the
maximum or minimum settin gs.Re boun d d ampin g force
To increase the rebound damping
force and thereby harden the rebound
damping, turn the adjusting screw on
each side of the front fork in direction
(a). To decrease the rebound damping
force and thereby soften the rebound
damping, turn the adjusting screw on
each side of the front fork in direction
(b).
1. Riding position
2. Parking position
2
1
2
1
2
1. Rebound damping force adjusting screw
1(a)
(b)
UBD5E0E0.book Page 30 Wednesday, April 25, 2018 2:23 PM

Instrument and control functions
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3
TIPWhen adjusting the spring preload set-
ting, turn the adjuster in direction (b)
until it stops, and then count the clicks
in direction (a).Re boun d d ampin g force
To increase the rebound damping
force and thereby harden the rebound
damping, turn the adjusting screw in direction (a). To decrease the rebound
damping force and thereby soften the
rebound damping, turn the adjusting
screw in direction (b).
TIP
When adjusting the damping force
settings, turn the adjuster in direc-
tion (a) until it stops, and then
count the number of turns in direc-
tion (b). 
Although a damping force adjust-
er may turn beyond the stated
minimum settings, such adjust-
ments are ineffective and may
damage the suspension.
WARNING
EWA10222
This shock a bsor ber assem bly con-
tains hig hly pressurize d nitro gen
g as. Rea d an d un derstan d the fol-
lowin g information before han dlin g
the shock a bsor ber assem bly.
 Do not tamper with or attempt
to open the cylind er assembly.
 Do not su bject the shock a b-
sor ber assem bly to an open
flame or other hi gh heat source.
This may cause the unit to ex-
plo de due to excessive gas
pressure.
 Do not deform or damag e the
cylin der in any way. Cylin der
d ama ge will result in poor
d ampin g performance.
1. Spring preload adjusting knobSprin g preloa d settin g:
Minimum (soft): 0 click(s) in direction (a)
Standard: 1 click(s) in direction (a)
Maximum (hard):
24 click(s) in direction (a)
(a)
(b)
1
1. Rebound damping force adjusting screw
Re boun d d ampin g settin g:
Minimum (soft): 2 4/5 turn(s) in direction (b)
Standard: 1 1/4 turn(s) in direction (b)
Maximum (hard):
0 turn(s) in direction (b)
(a)
(b)
1
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Instrument and control functions
3-33
3 
Do not dispose of a damag ed or
worn-out shock a bsor ber as-
sem bly yourself. Take the shock
a b sor ber assem bly to a Yamaha
d ealer for any service.
EAU49454
Auxiliary DC jackA 12-V accessory connected to the
auxiliary DC jack can be used when the
main switch is on.NOTICE
ECA15432
The accessory connecte d to the
auxiliary DC jack shoul d not b e used
with the en gine turne d off, an d the
loa d must never exceed 12 W (1.0 A),
otherwise the fuse may blow or the
b attery may d ischarge.To use the auxiliary DC jack
1. Turn the main switch off.
2. Remove the auxiliary DC jack cap.
3. Turn the accessory off. 4. Insert the accessory plug into the
auxiliary DC jack.
5. Turn the main switch on, and start the engine. (See page 5-1.)
6. Turn the accessory on.
WARNING
EWA14361
To prevent electrical shock or short-
circuitin g, make sure that the cap is
installe d when the auxiliary DC jack
is not bein g use d.
1. Auxiliary DC jack cap
1
1. Auxiliary DC jack
1
UBD5E0E0.book Page 33 Wednesday, April 25, 2018 2:23 PM

Instrument and control functions
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3
EAU70641
Auxiliary DC connectorThis vehicle is equipped with an auxil-
iary DC connector. Consult your
Yamaha dealer before installing any accessories.
EAU15306
Si destan dThe sidestand is located on the left
side of the frame. Raise the sidestand
or lower it with your foot while holding
the vehicle upright.TIPThe built-in sidestand switch is part of
the ignition circuit cut-off system,
which cuts the ignition in certain situa-
tions. (See the following section for an
explanation of the ignition circuit cut-
off system.)
WARNING
EWA10242
The vehicle must not b e ridden with
the si destan d d own, or if the si de-
stan d cannot b e properly move d up
(or does not stay up), otherwise the
si destan d coul d contact the groun d
an d d istract the operator, resultin g
in a possib le loss of control.
Yamaha’s ig nition circuit cut-off
system has been desi gne d to assist
the operator in fulfillin g the respon-
si bility of raisin g the si destan d b e-
fore startin g off. Therefore, check this system re
gularly an d have a
Yamaha dealer repair it if it does not
function properly.
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Instrument and control functions
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3
With the engine turned off:
1. Move the sidestand down.
2. Set engine stop switch to run position.
3. Turn main switch to on position.
4. Shift transmission into neutral.
5. Push the start switch.
Does the engine start?
With the engine still running:
6. Move the sidestand up.
7. Pull the clutch lever.
8. Shift transmission into gear.
9. Move the sidestand down.
Does the engine stall?
After the engine has stalled:
10. Move the sidestand up.
11. Pull the clutch lever.
12. Push the start switch.
Does the engine start?
The system is OK. The motorcycle can be ridden.
YES NO YES NO YES NO
The neutral switch may not be working.
The motorcycle should not be ridden until
checked by a Yamaha dealer.
The clutch switch may not be working.
The motorcycle should not be ridden until
checked by a Yamaha dealer.The sidestand switch may not be working.
The motorcycle should not be ridden until
checked by a Yamaha dealer.If a malfunction is found, have the vehicle
inspected before riding.
WARNING
UBD5E0E0.book Page 36 Wednesday, April 25, 2018 2:23 PM