2021 YAMAHA NMAX 155 Owners Manual

Instrument and control functions
6-15
6
To install the fuel tank cap, turn it
clockwise until the “ ” mark is facing
forward. Close the fuel tank cap lid.
WARNING
EWA10132
Make sure that the fuel tank cap is
properly installed
before ri din g.
Leakin g fuel is a fire hazar d.
EAU13213
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. 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. “ ” mark
2. Fuel tank cap
1 2
1. Fuel tank filler tube
2. Maximum fuel level
1
2
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Instrument and control functions
6-16
6 ately. If
gasoline spills on your skin,
wash with soap an d water. If gaso-
line spills on your clothin g, chan ge
your clothes.
EAU86072
Your Yamaha engine was designed to
use unleaded gasoline with a research
octane number of 90 or higher. If en-
gine knocking or pinging occurs, use a
gasoline of a different brand or higher
octane rating.
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 lea ded 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.
Recommen ded fuel:
Unleaded gasoline (E10 acceptable)
Octane num ber (RON):
90
Fuel tank capacity: 7.1 L (1.9 US gal, 1.6 Imp.gal)
Fuel tank reserve:
1.7 L (0.45 US gal, 0.37 Imp.gal)
E5
E10
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Instrument and control functions
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6
EAU86150
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 and routing.
 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.
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 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 cooled down before
d oin g any maintenance work.
 Do not allow the en gine to id le
more than a few minutes. Lon g
i d lin g can cause a buil d-up of
heat.
EAU89400
SeatTo open the seat
Via the main switchTurn the main switch to “OPEN”, and
then push the “SEAT” button. (See
page 3-9.)
With the mechanical key1. Open the keyhole cover.
2. Insert the mechanical key into the seat lock, and then turn it clock-
wise.
3. Lift the rear of the seat.
1. Fuel tank overflow hose
1
1. Keyhole cover
2. Seat lock
3. Unlock.
1 3
2
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Instrument and control functions
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6
NOTICE
ECA24020
Make sure that the keyhole cover is
installe d when the mechanical key is
not bein g use d.To close the seat
Push the rear of the seat down to lock
it in place.TIPMake sure that the seat is properly se-
cured before riding.
EAU37482
Helmet hold ersThe helmet holders are located under
the seat.
To secure a helmet to a helmet hol d-
er 1. Open the seat. (See page 6-17.)
2. Attach a helmet to a helmet hold- er, and then securely close the
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]
To release a helmet from a helmet
hol der
Open the seat, remove the helmet from
the helmet holder, and then close the
seat.
1. Helmet holder
1
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Instrument and control functions
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6
EAUN2612
Stora ge compartmentsThis model is equipped with 3 storage
compartments. The front storage com-
partments and rear storage compart-
ment are located as shown.
TIPSome helmets cannot be stored in the
rear storage compartment because of
their size or shape.Stora ge compartment B
To open storage compartment B, pull
up the storage compartment lid to un-
lock it, and then open.
To close storage compartment B, push
the storage compartment lid into the
original position. Rear storag
e compartment
To open the rear storage compart-
ment, turn the main switch to “OPEN”,
and then push the “SEAT” button.
TIPDo not leave your vehicle unattended
with the seat open.NOTICE
ECA21150
Keep the followin g points in min d
when usin g the stora ge compart-
ment.  Since the storag e compartment
accumulates heat when ex-
pose d to the sun an d/or the en-
g ine heat, d o not store anythin g
suscepti ble to heat, consum-
a b les or flamma ble items insi de
it.
 To avoi d humi dity from sprea d-
in g throu gh the stora ge com-
partment, wrap wet articles in a
plastic bag b efore storin g them
in the compartment.
1. Storage compartment A
2. Storage compartment B
1. Rear storage compartment1 2
1
1. Lid
2. Storage compartment B
12
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Instrument and control functions
6-20
6 
Since the stora ge compartment
may get wet while the vehicle is
b ein g washe d, wrap any articles
store d in the compartment in a
plastic bag .
 Do not keep anythin g valua ble
or breakab le in the stora ge
compartment.
WARNING
EWA18950
 Do not exceed the load limit of
1.5 k g (3.3 lb ) for stora ge com-
partment A.
 Do not exceed the load limit of
0.3 k g (1 l b) for stora ge com-
partment B.
 Do not exceed the load limit of
5.0 k g (11 l b) for the rear stora ge
compartment.
 Do not exceed the maximum
loa d of 167 k g (368 lb ) for the ve-
hicle.
EAUN3020
A djustin g the shock a bsorb er
assem bliesEach shock absorber assembly is
equipped with a spring preload adjust-
ing ring.
WARNING
EWA10211
Always a djust both shock ab sorber
assem blies equally, otherwise poor
han dlin g an d loss of sta bility may re-
sult.To a djust the sprin g preloa d
Turn the adjusting ring in direction (a)
to increase the spring preload.
Turn the adjusting ring in direction (b)
to decrease the spring preload.
Align the appropriate number (1 or 2) in
the adjusting ring with the position indi-
cator on the shock absorber.
1. Position indicator
2. Spring preload adjusting ringSprin g preloa d setting :
Position 1: Standard
Position 2: Hard
2 1
(a) (b)
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Instrument and control functions
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6
EAUN2161
Power outlet This model is equipped with a 12V DC
power outlet.NOTICE
ECAN0140
Do not use the power outlet when
the en gine is off, an d d o not exceed
the specified electrical load ; other-
wise the fuse may blow or the b at-
tery may d ischarge.
When washin g the vehicle, do not di-
rect hi gh-pressure washers at the
power outlet area.
To use the power outlet 1. Turn the vehicle power off.
2. Remove the power outlet cap.
3. Turn the accessory off.
4. Insert the accessory plug into the power outlet.
5. Turn the vehicle power on and start the engine.
6. Turn the accessory on.TIPWhen finished riding, turn off the ac-
cessory and disconnect it from the
power outlet, and then install the cap.
WARNING
EWAN0050
To prevent electrical shock or short-
circuitin g, install the cap when the
power outlet is not in use.
1. Power outletMaximum electrical loa d:
12 W (1A)1
1. Power outlet cap1
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Instrument and control functions
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6
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 be ri dden 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 possi ble 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 reg
ularly and have a
Yamaha dealer repair it if it does not
function properly.
EAUT1098
I g nition circuit cut-off systemCheck the operation of the sidestand
switch according to the following pro-
cedure.
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