Yamaha Nmax 125 Manual

							
3-21
1
2
3
4
5
6
7
8
9
EAU1044D
INSTRUMENT AND CONTROL FUNCTIONS
3-3
EAUT1821
Speedometer unit
12
1. Speedometer
2. OdometerThe speedometer unit is equipped with
a speedometer and an odometer. The
speedometer shows the riding speed.
The odometer shows the total distance
traveled.
Engine trouble warning light
Speedometer unit
Fuel gauge
EAU12140
Fuel gauge
1
1. Fuel gaugeThe fuel gauge indicates the amount of
fuel in the fuel tank. The needle moves
towards “E” (Empty) as the fuel level
decreases. When the needle reaches
“E”, refuel as soon as possible.TIP
Do not allow the fuel tank to empty it-
self completely.
EAUT1934
Engine trouble warning light “
”
This warning light flashes or stays on if
an electrical circuit monitoring the en-
gine is not working correctly. If this oc-
curs, have a Yamaha dealer check the
self-diagnosis system.
The electrical circuit of the warning light
can be checked by turning the key to
“ON”. The warning light should come on
for a few seconds, and then go off.
If the warning light does not come on
initially when the key is turned to “ON”,
or if the warning light remains on, have
a Yamaha dealer check the electrical
circuit. 
						

							
3-22
1
2
3
4
5
6
7
8
9
EAU1044D
INSTRUMENT AND CONTROL FUNCTIONS
3-4
Handlebar switches
Dimmer switch
Turn signal switch
Horn switch
Engine stop switch
Start switch
EAU12460
Turn signal switch “4
4 4
4
4 /
6
6 6
6
6 ”
To signal a right-hand turn, push this
switch to “ 6”. To signal a left-hand turn,
push this switch to “ 4”. When released,
the switch returns to the center position.
To cancel the turn signal lights, push the
switch in after it has returned to the cen-
ter position.
EAU12400
Dimmer switch “ &
& &
&
& /
%
% %
%
% ”
Set this switch to “ &” for the high beam
and to “ %” for the low beam.
EAU12660
Engine stop switch “
#
# #
#
# /
$
$ $
$
$ ”
Set this switch to “ #” before starting the
engine. Set this switch to “ $” to stop
the engine in case of an emergency,
such as when the motorcycle overturns
or when the throttle cable is stuck.
EAU12500
Horn switch “ *
* *
*
* ”
Press this switch to sound the horn.
EAU12711
Start switch “ ,
, ,
,
, ”
Push this switch to crank the engine with
the starter. See page 5-1 for starting in-
structions prior to starting the engine.
EAU12348
Handlebar switchesLeft
1
2
3
1. Dimmer switch 
%/& 
2. Turn signal switch  4/6 
3. Horn switch  *
Right
1
2
1. Engine stop switch “ #/$ ”
2. Start switch  , 
						

							
3-23
1
2
3
4
5
6
7
8
9
EAU1044D
INSTRUMENT AND CONTROL FUNCTIONS
3-5
Brake lever, front
Brake lever, rear
Fuel tank cap
EAU12900
Front brake lever
1
1. Front brake leverThe front brake lever is located on the
right handlebar grip. To apply the front
brake, pull this lever toward the handle-
bar grip.
EAU13041
Fuel tank cap
LOCK
11. Fuel tank capTo open the fuel tank cap
Insert the key into the lock and turn it 1/
4 turn clockwise. The lock will be re-
leased and the fuel tank cap can be
opened.
To close the fuel tank cap
1. Push the fuel tank cap into posi- tion with the key inserted in the
lock.
2. Turn the key counterclockwise to the original position, and then re-
move it.
EAU12950
Rear brake lever
1
1. Rear brake leverThe rear brake lever is located on the
left handlebar grip. To apply the rear
brake, pull this lever toward the handle-
bar grip. 
						

							
3-24
1
2
3
4
5
6
7
8
9
EAU1044D
INSTRUMENT AND CONTROL FUNCTIONS
3-6
FuelTIP
The 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.
EWA11091
WARNING
Make sure that the fuel tank cap is
properly closed after filling fuel. Leak-
ing fuel is a fire hazard.
EAU13221
Fuel
1
21. Fuel tank filler tube
2. Fuel levelMake sure there is sufficient gasoline
in the tank.
EWA10881
WARNING
Gasoline and gasoline vapors are
extremely flammable. To avoid fires
and explosions and to reduce the risk
of injury when refueling, follow these
instructions.1. Before refueling, turn off the engineand be sure that no one is sitting on the vehicle. Never refuel while
smoking, or while in the vicinity of
sparks, open flames, or other
sources of ignition such as the pi-
lot 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. Be-
cause 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 spilled fuel with a clean, dry,
soft cloth, since fuel may dete-
riorate painted surfaces or plas-
tic parts.
[ECA10071]
4. Be sure to securely close the fuel tank cap.
EWA15151
WARNING
Gasoline is poisonous and can cause
injury or death. Handle gasoline with 
						

							
3-25
1
2
3
4
5
6
7
8
9
EAU1044D
INSTRUMENT AND CONTROL FUNCTIONS
3-7
care. Never siphon gasoline by
mouth. If you should swallow some
gasoline or inhale a lot of gasoline
vapor, or get some gasoline in your
eyes, see your doctor immediately. If
gasoline spills on your skin, wash
with soap and water. If gasoline spills
on your clothing, change your
clothes.
EAU36081
Recommended fuelUNLEADED GASOLINE ONLY
Fuel tank capacity:
6.0 L (1.59 US gal) (1.32 Imp.gal)
ECA11400
NOTICEUse only unleaded gasoline. The use
of leaded gasoline will cause severe
damage to internal engine parts,
such as the valves and piston rings,
as well as to the exhaust system.Your Yamaha engine has been designed
to use regular unleaded gasoline with a
pump octane number [(R+M)/2] of 86 or higher, or a research octane number
of 91 or higher. If knocking (or pinging)
occurs, use a gasoline of a different
brand or premium unleaded fuel. Use of
unleaded fuel will extend spark plug life
and reduce maintenance costs.
Gasohol
There are two types of gasohol: gaso-
hol containing ethanol and that contain-
ing methanol. Gasohol containing etha-
nol can be used if the ethanol content
does not exceed 10% (E10). Gasohol
containing methanol is not recom-
mended by Yamaha because it can
cause damage to the fuel system or
vehicle performance problems.
EAU13433
Catalytic converterThis model is equipped with a catalytic
converter in the exhaust system.
EWA10862
WARNING
The exhaust system is hot after op-
eration. To prevent a fire hazard or
burns:●
● ●
●
●
Do not park the vehicle near pos-
sible fire hazards such as grass
or other materials that easily
burn.
●
● ●
●
●
Park the vehicle in a place where
pedestrians or children are not
likely to touch the hot exhaust
system.
●
● ●
●
●
Make sure that the exhaust sys-
tem has cooled down before do-
ing any maintenance work.
●
● ●
●
●
Do not allow the engine to idle
more than a few minutes. Long
idling can cause a build-up of
heat.
Catalytic converter 
						

							
3-26
1
2
3
4
5
6
7
8
9
EAU1044D
INSTRUMENT AND CONTROL FUNCTIONS
3-8
Seat
ECA10701
NOTICEUse only unleaded gasoline. The use
of leaded gasoline will cause
unrepairable damage to the catalytic
converter.
EAUT2670
Seat
PUSHPUSH
1
1
1. OpenTo open the seat1. Place the scooter on the centerstand.
2. Insert the key into the main switch, and then turn it counterclockwise
to the “OPEN” position. If the main
switch is in the “ON” position, turn
the key clockwise to the “OPEN”
position. The seat will fold up auto-
matically.TIP
Do not push inward when turning the key from “OFF” to “OPEN” or from “ON” to
“OPEN”.
To close the seat
1. Fold the seat down, and then push it down to lock it in place.
2. Remove the key from the main switch if the scooter will be left un-
attended.TIP
Make sure that the seat is properly se-
cured before riding. 
						

							
3-27
1
2
3
4
5
6
7
8
9
EAU1044D
INSTRUMENT AND CONTROL FUNCTIONS
3-9
Helmet holder
Storage compar tment
EAU14301
Helmet holder
1
1. Helmet holderThe helmet holder is located under the
seat.
To secure a helmet to the helmet
holder1. Open the seat. (See page 3-8.)
2. Attach the helmet to the helmet holder, and then securely close the
seat.  WARNING! Never ride with
a helmet attached to the helmet
holder, since the helmet may hit
objects, causing loss of control
and possibly an accident.
[EWA10161]
To release the helmet from the
helmet holder
Open the seat, remove the helmet from
the helmet holder, and then close the
seat.
EAU14452
Storage compartment
1
1. Storage compartmentThe storage compartment is located
under the seat. (See page 3-8.)
EWA10961
WARNING
8
8 8
8
8 Do not exceed the load limit of 5
kg (11 lb) for the storage com-
partment.
8
8 8
8
8 Do not exceed the maximum
load of 155 kg (342 lb) for the ve-
hicle.When storing the Owner’s Manual or
other documents in the storage compart- 
						

							
3-28
1
2
3
4
5
6
7
8
9
EAU1044D
INSTRUMENT AND CONTROL FUNCTIONS
3-10
Sidestand
ment, be sure to wrap them in a plastic
bag so that they will not get wet. When
washing the vehicle, be careful not to
let any water enter the storage compart-
ment.
EAU15303
Sidestand
1
1. SidestandThe sidestand is located on the left side
of the frame. Raise the sidestand or lower
it with your foot while holding the ve-
hicle upright.TIP
The built-in sidestand switch is part of
the ignition circuit cut-off system, which
cuts the ignition in certain situations.
(See page 3-11 for an explanation of the
ignition circuit cut-off system.)
EWA10240
wThe vehicle must not be ridden with
the sidestand down, or if the
sidestand cannot be properly moved
up (or does not stay up), otherwise
the sidestand could contact the
ground and distract the operator, re-
sulting in a possible loss of control.
Yamaha’s ignition circuit cut-off sys-
tem has been designed to assist the
operator in fulfilling the responsibil-
ity of raising the sidestand before
starting off. Therefore, check this sys-
tem regularly as described below and
have a Yamaha dealer repair it if it
does not function properly. 
						

							
3-29
1
2
3
4
5
6
7
8
9
EAU1044D
INSTRUMENT AND CONTROL FUNCTIONS
3-11
EAU45051
Ignition circuit cut-off systemThe ignition circuit cut-off system (com-
prising the sidestand switch and brake
light switches) has the following func-
tions.8 It prevents star ting when the
sidestand is up, but neither brake
is applied.
8 It prevents starting when either
brake is applied, but the sidestand
is still down.
8 It cuts the running engine when the
sidestand is moved down.
Periodically check the operation of the
ignition circuit cut-off system according
to the following procedure. Ignition circuit cut-off system 
						

							
3-30
1
2
3
4
5
6
7
8
9
EAU1044D
INSTRUMENT AND CONTROL FUNCTIONS
3-12
With the engine turned off:
1. Move the sidestand down.
2. Make sure that the engine stop switch is turned on.
3. Turn the key on. 
4. Keep the front or rear brake applied.
5. Push the start switch.
Does the engine start?
With the engine still off:
6. Move the sidestand up.
7. Keep the front or rear brake applied.
8. Push the start switch.
Does the engine start?
With the engine still running:
9. Move the sidestand down.
Does the engine stall?
The system is OK. The scooter can be ridden. The sidestand switch may not be working correctly.
The scooter should not be ridden
 until
checked by a Yamaha dealer.
The brake switch may not be working correctly.
The scooter should not be ridden  until
checked by a Yamaha dealer.
The sidestand switch may not be working correctly.
The scooter should not be ridden  until
checked by a Yamaha dealer.
YES NO YES NO NO YES
If a malfunction is noted, have a Yamaha
dealer check the system before riding.
WARNING