2015 YAMAHA NMAX 125 fuel cap

Table of contentsSafety information ............................ 1-1
Further safe-riding points ............... 1-5
Description ....................................... 2-1
Left view ......................................... 2-1
Right view ....................................... 2-2
Controls and instruments ............... 2-3
Instrument an d control functions ... 3-1
Main switch/steering lock............... 3-1
Keyhole shutter .............................. 3-2
Indicator lights and warning lights............................................ 3-2
Multi-function meter unit ................ 3-4
Handlebar switches ...................... 3-10
Front brake lever .......................... 3-10
Rear brake lever ........................... 3-11
ABS .............................................. 3-11
Fuel tank cap ................................ 3-12
Fuel ............................................... 3-13
Fuel tank overflow hose ............... 3-14
Catalytic converter ....................... 3-14
Seat .............................................. 3-15
Storage compartments................. 3-16
Sidestand ..................................... 3-17
Ignition circuit cut-off system ....... 3-17 For your safety – pre-operation
checks
............................................... 4-1
Operation an d important ri din g
points ................................................. 5-1
Starting the engine .......................... 5-1
Starting off ...................................... 5-2
Acceleration and deceleration ........ 5-2
Braking ............................................ 5-2
Tips for reducing fuel consumption ................................ 5-3
Engine break-in ............................... 5-3
Parking ............................................ 5-4
Perio dic maintenance an d
a d justment ........................................ 6-1
Owner’s tool kit ............................... 6-1
Periodic maintenance chart for
the emission control system ........ 6-2
General maintenance and
lubrication chart ........................... 6-3
Removing and installing panels ...... 6-7
Checking the spark plug ................. 6-8
Engine oil and oil strainer .............. 6-10
Final transmission oil..................... 6-12
Coolant.......................................... 6-13
Air filter and V-belt case air filter elements .................................... 6-16
Checking the throttle grip
free play ..................................... 6-18
Valve clearance ............................. 6-19 Tires .............................................. 6-19
Cast wheels .................................. 6-21
Checking the front and rear
brake lever free play .................. 6-21
Checking the front and rear
brake pads ................................ 6-22
Checking the brake fluid level ...... 6-22
Changing the brake fluid .............. 6-24
Checking the V-belt ...................... 6-24
Checking and lubricating the cables ........................................ 6-24
Checking and lubricating the throttle grip and cable ............... 6-25
Lubricating the front and rear
brake levers ............................... 6-25
Checking and lubricating the centerstand and sidestand........ 6-26
Checking the front fork ................. 6-26
Checking the steering................... 6-27
Checking the wheel bearings ....... 6-27
Battery .......................................... 6-28
Replacing the fuses ...................... 6-29
Headlight ...................................... 6-30
Replacing an auxiliary light bulb ........................................... 6-31
Brake light..................................... 6-32
Replacing the taillight bulb ........... 6-32
Replacing a front turn signal light bulb.................................... 6-34
Replacing a rear turn signal light bulb.................................... 6-35U2DSE0E0.book Page 1 Thursday, March 19, 2015 10:34 AM

Description
2-1
2
EAU10411
Left view
6
7
8,9
10
11
123 4 5
1. Front storage compartment (page 3-16)
2. Fuel tank cap (page 3-12)
3. Owner’s tool kit (page 6-1)
4. Rear storage compartment (page 3-16)
5. Air filter element (page 6-16)
6. Final transmission oil filler cap (page 6-12)
7. Final transmission oil drain bolt (page 6-12)
8. Engine oil drain bolt A (page 6-10)
9. Engine oil drain bolt B (page 6-10)
10.Coolant drain bolt (page 6-14)
11.V-belt case air filter element (page 6-16)U2DSE0E0.book Page 1 Thursday, March 19, 2015 10:34 AM

Instrument and control functions
3-12
3
EAU66690
Fuel tank capTo remove the fuel tank cap
Open the fuel tank cap lock cover, in-
sert the key into the lock, and then turn
it 1/4 turn clockwise. The lock will be
released and the fuel tank cap can be
removed.
To install the fuel tank cap
1. Insert the fuel tank cap into the tank opening with the key inserted
in the lock and with the “ ” mark
facing forward. 2. Turn the key counterclockwise to
the original position, remove it,
and then close the lock cover.
TIPThe fuel tank cap cannot be installed
unless the key is in the lock. In addi-
tion, the key cannot be removed if the
cap is not properly installed and
locked.
WARNING
EWA10132
Make sure that the fuel tank cap is
properly installe d before ri din g.
Leakin g fuel is a fire hazar d.
1. Front wheel sensor
2. Front wheel sensor rotor
1. Rear wheel sensor
2. Rear wheel sensor rotor
2
1
1
2
1. Fuel tank cap lock cover
2. Lock.
3. Unlock.
1 2
3
1. “ ” mark
1
U2DSE0E0.book Page 12 Thursday, March 19, 2015 10:34 AM

Instrument and control functions
3-13
3
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 refuelin g, 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 d eath. Handle gaso-
line with care. Never siphon gasoline
b y mouth. If you shoul d swallow
some gasoline or inhale a lot of gas-
oline vapor, or g et some gasoline in
your eyes, see your doctor imme di- ately. If g
asoline spills on your skin,
wash with soap an d water. If gaso-
line spills on your clothin g, chan ge
your clothes.
EAU53013
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.Your Yamaha engine has been de-
signed to use regular unleaded gaso-
line with a research octane number of
95 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.
1. Fuel tank filler tube
2. Maximum fuel level
2 1
Recommen
ded fuel:
Regular unleaded gasoline (Gasohol
(E10) acceptable)
Fuel tank capacity:
6.6 L (1.74 US gal, 1.45 Imp.gal)
U2DSE0E0.book Page 13 Thursday, March 19, 2015 10:34 AM

Scooter care and stora ge
7-4
7
EAU36564
Stora geShort-term
Always store your scooter in a cool, dry
place and, if necessary, protect it
against dust with a porous cover. Be
sure the engine and the exhaust sys-
tem are cool before covering the
scooter.NOTICE
ECA10821
 Storin g the scooter in a poorly
ventilate d room or coverin g it
with a tarp, while it is still wet,
will allow water an d humi dity to
seep in an d cause rust.
 To prevent corrosion, avoi d
d amp cellars, sta bles ( because
of the presence of ammonia)
an d areas where stron g chemi-
cals are stored .Long-term
Before storing your scooter for several
months: 1. Follow all the instructions in the “Care” section of this chapter. 2. Fill up the fuel tank and add fuel
stabilizer (if available) to prevent
the fuel tank from rusting and the
fuel from deteriorating.
3. Perform the following steps to protect the cylinder, piston rings,
etc. from corrosion.a. Remove the spark plug cap and spark plug.
b. Pour a teaspoonful of engine oil into the spark plug bore.
c. Install the spark plug cap onto the spark plug, and then place
the spark plug on the cylinder
head so that the electrodes are
grounded. (This will limit spark-
ing during the next step.)
d. Turn the engine over several times with the starter. (This will
coat the cylinder wall with oil.)
e. Remove the spark plug cap from the spark plug, and then
install the spark plug and the
spark plug cap. WARNING! To
prevent dama ge or injury
from sparkin g, make sure to
g roun d the spark plu g elec-
tro des while turnin g the en-
g ine over.
[EWA10952]
4. Lubricate all control cables and
the pivoting points of all levers and
pedals as well as of the side-
stand/centerstand.
5. Check and, if necessary, correct the tire air pressure, and then lift
the scooter so that both of its
wheels are off the ground. Alterna-
tively, turn the wheels a little every
month in order to prevent the tires
from becoming degraded in one
spot.
6. Cover the muffler outlet with a plastic bag to prevent moisture
from entering it.
7. Remove the battery and fully charge it. Store it in a cool, dry
place and charge it once a month.
Do not store the battery in an ex-
cessively cold or warm place [less
than 0 °C (30 °F) or more than 30
°C (90 °F)]. For more information
on storing the battery, see page
6-28.TIPMake any necessary repairs before
storing the scooter.
U2DSE0E0.book Page 4 Thursday, March 19, 2015 10:34 AM

Specifications
8-1
8
Dimensions:Overall length:1955 mm (77.0 in)
Overall width:
740 mm (29.1 in)
Overall height: 1115 mm (43.9 in)
Seat height: 765 mm (30.1 in)
Wheelbase:
1350 mm (53.1 in)
Ground clearance: 135 mm (5.31 in)
Minimum turning radius: 2000 mm (78.7 in)Wei ght:Curb weight:
127 kg (280 lb)Engine:Engine type:
Liquid cooled 4-stroke, SOHC
Cylinder arrangement: Single cylinder
Displacement: 125 cm3
Bore × stroke:
52.0 × 58.7 mm (2.05 × 2.31 in)
Compression ratio: 11.2 : 1
Starting system: Electric starter
Lubrication system:
Wet sump
Engine oil:Recommended brand:
YAMALUBE
Type:
SAE 10W-40 or 20W-40
Recommended engine oil grade: API service SG type or higher, JASO
standard MA or MB
Engine oil quantity: Periodic oil change:
0.90 L (0.95 US qt, 0.79 Imp.qt)Final transmission oil:Type:YAMALUBE 10W-40 or SAE 10W-30 type SE motor oil
Quantity: 0.15 L (0.16 US qt, 0.13 Imp.qt)Coolant quantity:Coolant reservoir (up to the maximum level
mark):
0.25 L (0.26 US qt, 0.22 Imp.qt)
Radiator (including all routes): 0.46 L (0.49 US qt, 0.40 Imp.qt)
Air filter:Air filter element:Oil-coated paper elementFuel:Recommended fuel:Regular unleaded gasoline (Gasohol (E10)
acceptable)
Fuel tank capacity: 6.6 L (1.74 US gal, 1.45 Imp.gal)Fuel injection:Throttle body:
ID mark:2DS1 00Spark plu g(s):Manufacturer/model:
NGK/CPR8EA-9
Spark plug gap: 0.8–0.9 mm (0.031–0.035 in)Clutch:Clutch type:Dry, centrifugal automaticTransmission:Primary reduction ratio:
1.000
Final drive: Gear
Secondary reduction ratio: 10.208 (56/16 x 35/12)
Transmission type:
V-belt automaticChassis:Frame type:Underbone
010305070 90110
130 ˚F
-20 -10 0 10 20 3040
50 ˚C
SAE 10W-40
SAE 20W-40
U2DSE0E0.book Page 1 Thursday, March 19, 2015 10:34 AM

10-1
10
IndexAABS ....................................................... 3-11
ABS warning light ................................... 3-3
Acceleration and deceleration ................ 5-2
Air filter and V-belt case air filter
elements ............................................. 6-16
Auxiliary light bulb, replacing ................ 6-31BBattery .................................................. 6-28
Brake fluid, changing ............................ 6-24
Brake fluid level, checking .................... 6-22
Brake lever, front .................................. 3-10
Brake lever, rear.................................... 3-11
Brake levers, lubricating ....................... 6-25
Brake light ............................................. 6-32
Braking.................................................... 5-2CCables, checking and lubricating ......... 6-24
Care ........................................................ 7-1
Catalytic converter ................................ 3-14
Centerstand and sidestand, checking and lubricating .................... 6-26
Coolant ................................................. 6-13
Coolant temperature warning light ......... 3-3DDimmer switch ...................................... 3-10EEngine break-in....................................... 5-3
Engine oil and oil strainer...................... 6-10
Engine serial number .............................. 9-1
Engine trouble warning light ................... 3-3FFinal transmission oil ............................ 6-12 Front and rear brake lever free play,
checking............................................. 6-21
Front and rear brake pads, checking ... 6-22
Front fork, checking ............................. 6-26
Fuel ....................................................... 3-13
Fuel consumption, tips for reducing ...... 5-3
Fuel tank cap ........................................ 3-12
Fuel tank overflow hose ....................... 3-14
Fuses, replacing ................................... 6-29
HHandlebar switches .............................. 3-10
Headlight .............................................. 6-30
High beam indicator light ....................... 3-3
Horn switch .......................................... 3-10IIdentification numbers ............................ 9-1
Ignition circuit cut-off system ............... 3-17
Indicator lights and warning lights ......... 3-2KKeyhole shutter ...................................... 3-2MMain switch/steering lock....................... 3-1
Maintenance and lubrication, periodic ... 6-3
Maintenance, emission control system.................................................. 6-2
Matte color, caution ............................... 7-1
Model label ............................................. 9-1
Multi-function meter unit ........................ 3-4PPanels, removing and installing .............. 6-7
Parking ................................................... 5-4
Part locations ......................................... 2-1SSafe-riding points ................................... 1-5 Safety information ...................................1-1
Seat .......................................................3-15
Sidestand ..............................................3-17
Spark plug, checking ..............................6-8
Specifications .........................................8-1
Starting off ..............................................5-2
Starting the engine ..................................5-1
Start switch ...........................................3-10
Steering, checking ................................6-27
Storage ...................................................7-4
Storage compartments .........................3-16
TTaillight bulb, replacing .........................6-32
Throttle grip and cable,
checking and lubricating ....................6-25
Throttle grip free play, checking ...........6-18
Tires ......................................................6-19
Tool kit ....................................................6-1
Troubleshooting ....................................6-36
Troubleshooting charts .........................6-37
Turn signal indicator lights ......................3-2
Turn signal light bulb (front),
replacing .............................................6-34
Turn signal light bulb (rear), replacing .............................................6-35
Turn signal switch .................................3-10VValve clearance .....................................6-19
V-belt, checking ....................................6-24
Vehicle identification number ..................9-1WWheel bearings, checking .....................6-27
Wheels ..................................................6-21
U2DSE0E0.book Page 1 Thursday, March 19, 2015 10:34 AM