YAMAHA NIKEN GT 2020 Service Manual

Instrument and control functions
3-26
3
TIP This mark identifies the recom-
mended fuel for this vehicle as
specified by European regulation
(EN228).
 Confirm the gasoline pump nozzle
has the same fuel identification
mark.Gasohol
There are two types of gasohol: gaso-
hol containing ethanol and that con-
taining methanol. Gasohol containing
ethanol can be used if the ethanol con-
tent does not exceed 10% (E10). Gas-
ohol containing methanol is not
recommended by Yamaha because it
can cause damage to the fuel system
or vehicle performance problems.
NOTICE
ECA11401
Use only unlea ded g asoline. The use
of lead ed g asoline will cause severe
d amag e to internal en gine parts,
such as the valves an d piston rin gs,
as well as to the exhaust system.
EAU86160
Fuel tank overflow hoseThe overflow hose drains excess gaso-
line and directs it safely away from the
vehicle.
Before 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 fuel tank over-
flow hose is not blocked, and
clean it if necessary.
 Make sure that the fuel tank over-
flow hose is positioned as shown.
E5
E10
1. Fuel tank overflow hose
2. Guide
3. Paint mark
321
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Instrument and control functions
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3
TIPSee page 6-11 for canister information.
EAU13435
Catalytic converterThe exhaust system contains catalytic
converter(s) to reduce harmful exhaust
emissions.
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 hazard s such as
g rass or other materials that
easily burn.
 Park the vehicle in a place
where ped estrians 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.
EAU84580
SeatsPassen ger seat
To remove the passenger seat1. Open the seat lock cover, insert the key into the seat lock, and then
turn the key counterclockwise.
2. Lift the rear of the passenger seat and pull it backward.1. Seat lock cover
2. Seat lock
3. Unlock.
3
2
1
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Instrument and control functions
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3
To install the passenger seat
1. Insert the projection on the front of
the passenger seat into the seat
holder as shown, and then push
the rear of the seat down to lock it
in place.
2. Remove the key.
Ri der seat
To remove the rider seat1. Remove the passenger seat, and then remove the hexagon wrench
located on the bottom of the seat. 2. Remove the bolts with the hexa-
gon wrench.
3. Lift the rear of the rider seat and pull it backward. To install the rider seat
1. Insert the projection on the front of
the rider seat into the seat holder
as shown, and then place the seat
in the original position.
2. Install the bolts with the hexagon wrench.
3. Insert the hexagon wrench back into its holder on the passenger
seat.
4. Install the passenger seat.TIPMake sure that the seats are properly
secured before riding.
1. Projection
2. Seat holder1
2
1. Hexagon wrench
1. Bolt
1
1
1. Projection
2. Seat holder
2
1
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Instrument and control functions
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EAU84590
Helmet hol din g ca bleA helmet holding cable is provided to
allow you to secure helmet(s) to the ve-
hicle.
To secure a helmet with the helmetholding cable1. Remove the passenger seat.
2. Remove the storage pouch and
cable. 3. Pass the helmet holding cable
through 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.
1. Helmet holding cable
2. Passenger seat
3. Projection
4. Helmet strap buckle
1
4 2
3
1. Storage pouch
2. Helmet holding cable
1
2
1. Storage compartment
1
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Instrument and control functions
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
Do not exceed the maximum
loa d of 191 k g (421 l b) for the ve-
hicle.
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.
EAU84601
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.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
Turn the adjusting screw in direction (a)
to increase the rebound damping for-
ce.
Turn the adjusting screw in direction (b)
to decrease the rebound damping for-
ce.
To set the rebound damping force, turn
the adjuster in direction (a) until it
stops, and then count the clicks in di-
rection (b).
1. Riding position
2. Parking position
2
1
2
1
2
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Instrument and control functions
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3
TIP When turning the damping force
adjuster in direction (a), the 0 click
position and the 1 click position
may be the same.
 When turning the damping force
adjuster in direction (b), it may
click beyond the stated specifica- tions, however such adjustments
are ineffective and may damage
the suspension.
Compression
dampin g force
Turn the adjusting screw in direction (a)
to increase the compression damping
force.
Turn the adjusting screw in direction (b)
to decrease the compression damping
force.
To set the compression damping for-
ce, turn the adjuster in direction (a) until
it stops, and then count the clicks in di-
rection (b).
TIP When turning the damping force
adjuster in direction (a), the 0 click
position and the 1 click position
may be the same.
 When turning the damping force
adjuster in direction (b), it may
click beyond the stated specifica-
tions, however such adjustments
are ineffective and may damage
the suspension.
1. Rebound damping force adjusting screwReboun d d ampin g setting :
Minimum (soft): 17 click(s) in direction (b)
Standard: 13 click(s) in direction (b)
Maximum (hard):
1 click(s) in direction (b)
1(a)
(b)
1. Compression damping force adjusting
screw
(b)
(a)
1
Compression dampin g settin g:
Minimum (soft):
13 click(s) in direction (b)
Standard:
8 click(s) in direction (b)
Maximum (hard): 1 click(s) in direction (b)
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Instrument and control functions
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EAU84611
A djustin g the shock a bsor ber
assem blyThis shock absorber assembly is
equipped with a spring preload adjust-
ing knob and a rebound damping force
adjusting screw.NOTICE
ECA10102
To avoi d d amag ing the mechanism,
d o not attempt to turn b eyond the
maximum or minimum settin gs.Sprin g preloa d
Turn the adjusting knob in direction (a)
to increase the spring preload.
Turn the adjusting knob in direction (b)
to decrease the spring preload.
To set the spring preload, turn the ad-
juster in direction (b) until it stops, and
then count the clicks in direction (a).
TIP When turning the spring preload
adjuster in direction (b), the 0 click
position and the 1 click position
may be the same.
 When turning the spring preload
adjuster in direction (a), it may
click beyond the stated specifica- tions, however such adjustments
are ineffective and may damage
the suspension.
Re
boun d d ampin g force
Turn the adjusting screw in direction (a)
to increase the rebound damping for-
ce.
Turn the adjusting screw in direction (b)
to decrease the rebound damping for-
ce.
To set the rebound damping force, turn
the adjuster in direction (a) until it
stops, and then count the turns in di-
rection (b).
1. Spring preload adjusting knob
Sprin 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
(a)
(b)
1
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Instrument and control functions
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TIPWhen turning the damping force ad-
juster in direction (b), it may turn be-
yond the stated specifications,
however such adjustments are ineffec-
tive and may damage the suspension.
WARNING
EWA10222
This shock a bsor ber assem bly con-
tains hi ghly 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 d amage the
cylin der in any way. Cylin der
d amag e will result in poor
d ampin g performance.
 Do not dispose of a damag ed or
worn-out shock a bsor ber as-
sem bl

y yourself. Take the shock
a b sor ber assem bly to a Yamaha
d ealer for any service.
EAU85720
Auxiliary DC jacksThese power outlets provide 12-volt
direct current electricity for a smart-
phone charger or other accessory with
the proper plug.
Re boun d d ampin g setting :
Minimum (soft):
2.8 turn(s) in direction (b)
Standard:
1.25 turn(s) in direction (b)
Maximum (hard): 0 turn(s) in direction (b)
1. Auxiliary DC jack
2. Auxiliary DC jack cap
1. Auxiliary DC jack
2. Auxiliary DC jack cap
1
2
12
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Instrument and control functions
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NOTICE
ECA26610
Do not draw power from a DC jack
with the en gine turne d off. Do not
connect any accessory which uses
more than 12 W (1.0 A). Otherwise
the battery may d ischarge or a fuse
may blow.To use an auxiliary DC jack
1. Start the engine. (See page 5-2.)
2. Turn the accessory off.
3. Open the auxiliary DC jack cap.
4. Insert the accessory power plug.
5. Turn the accessory on.TIP When inserting or removing the
accessory power plug, turn the
accessory off.
 When the auxiliary DC jack is not
being used, cover it with the cap.
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.
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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EAU44905
Ig nition circuit cut-off systemThis system prevents in-gear engine
starts unless the clutch lever is pulled
and the sidestand is up. Also, it will
stop the running engine should the
sidestand be lowered while the trans-
mission is in gear.
Periodically check the system via the
following procedure.TIP This check is most reliable if per-
formed with a warmed-up engine.
 See pages 3-2 and 3-3 for switch
operation information.
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