2019 YAMAHA NMAX 150 check engine

Table of contents
Safety 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 ............................................3-3
Multi-function meter unit .................3-4
Handlebar switches.........................3-9
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 ................3-15
Catalytic converter ........................3-15
Seat ...............................................3-16
Storage compartments .................3-16
Sidestand ......................................3-17
Ignition circuit cut-off system........3-18
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.........5-3
Braking ............................................5-3
Tips for reducing fuel consumption ................................5-4
Engine break-in ...............................5-4
Parking ............................................5-5
Perio dic maintenance an d
a d justment ........................................6-1
Owner’s tool kit ...............................6-2
Periodic maintenance chart for the emission control system ........6-3 General maintenance and
lubrication chart........................... 6-4
Removing and installing panels ...... 6-7
Checking the spark plug ................. 6-9
Engine oil and oil strainer.............. 6-10
Final transmission oil .................... 6-12
Coolant ......................................... 6-13
Air filter and V-belt case air filter elements ............................ 6-17
Checking the throttle grip free play ..................................... 6-19
Valve clearance ............................. 6-20
Tires .............................................. 6-20
Cast wheels .................................. 6-22
Checking the front and rear brake lever free play .................. 6-23
Checking the front and rear
brake pads................................. 6-24
Checking the brake fluid level....... 6-25
Changing the brake fluid............... 6-26
Checking the V-belt ...................... 6-26
Checking and lubricating the cables ........................................ 6-27
Checking and lubricating the throttle grip and cable ............... 6-27
Lubricating the front and rear
brake levers ............................... 6-28
Checking and lubricating the centerstand and sidestand ........ 6-28
Checking the front fork ................. 6-29
Checking the steering ................... 6-29
Checking the wheel bearings ....... 6-30
Battery .......................................... 6-30
Replacing the fuses ...................... 6-32
Headlight....................................... 6-33
Replacing an auxiliary light bulb ... 6-34
Brake light ..................................... 6-35
Replacing the taillight bulb ........... 6-35
Replacing a front turn signal light bulb .................................... 6-37
Replacing a rear turn signal
light bulb .................................... 6-38
Troubleshooting ............................ 6-39
Troubleshooting charts ................. 6-40
UBV3E0E0.book Page 1 Monday, September 26, 2016 3:42 PM

Safety information
1-3
1
any engine exhaust. Deadly levels of
carbon monoxide can collect rapidly
and you can quickly be overcome and
unable to save yourself. Also, deadly
levels of carbon monoxide can linger
for hours or days in enclosed or poorly
ventilated areas. If you experience any
symptoms of carbon monoxide poi-
soning, leave the area immediately, get
fresh air, and SEEK MEDICAL TREAT-
MENT.
 Do not run engine indoors. Even if
you try to ventilate engine exhaust
with fans or open windows and
doors, carbon monoxide can rap-
idly reach dangerous levels.
 Do not run engine in poorly venti-
lated or partially enclosed areas
such as barns, garages, or car-
ports.
 Do not run engine outdoors where
engine exhaust can be drawn into
a building through openings such
as windows and doors.
Loa din g
Adding accessories or cargo to your
scooter can adversely affect stability
and handling if the weight distribution
of the scooter is changed. To avoid the
possibility of an accident, use extreme
caution when adding cargo or acces-
sories to your scooter. Use extra care
when riding a scooter that has added
cargo or accessories. Here, along with
the information about accessories be-
low, are some general guidelines to fol-
low if loading cargo to your scooter: The total weight of the operator, pas-
senger, accessories and cargo must
not exceed the maximum load limit.
Operation of an overloa
ded vehicle
coul d cause an acci dent.
When loading within this weight limit,
keep the following in mind:  Cargo and accessory weight
should be kept as low and close to
the scooter as possible. Securely
pack your heaviest items as close
to the center of the vehicle as pos-
sible and make sure to distribute
the weight as evenly as possible
on both sides of the scooter to
minimize imbalance or instability.
 Shifting weights can create a sud-
den imbalance. Make sure that
accessories and cargo are se-
curely attached to the scooter be-
fore riding. Check accessory
mounts and cargo restraints fre-
quently.
• Properly adjust the suspension for your load (suspension-ad-
justable models only), and
check the condition and pres-
sure of your tires.
• Never attach any large or heavy items to the handlebar, front
fork, or front fender. Such items
can create unstable handling or
a slow steering response.
 This vehicle is not desi gne d to
pull a trailer or to be attached to
a si decar.
Maximum loa d:
168 kg (370 lb)
UBV3E0E0.book Page 3 Monday, September 26, 2016 3:42 PM

Instrument and control functions
3-3
3
EAU4939B
In dicator li ghts an d warnin g
li g hts
EAU11032Turn si gnal in dicator li ghts “ ”
an d“”
Each indicator light will flash when its
corresponding turn signal lights are
flashing.
EAU11081Hi gh beam in dicator li ght “ ”
This indicator light comes on when the
high beam of the headlight is switched
on.
EAU67440Coolant temperature warnin g
li g ht “ ”
This warning light comes on if the en-
gine overheats. If this occurs, stop the
engine immediately and allow the en-
gine to cool. 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.
NOTICE
ECA10022
Do not continue to operate the en-
g
ine if it is overheatin g.
TIP
If the engine overheats, see page 6-41
for further instructions.
EAU73171En gine trou ble warnin g li ght “ ”
This warning light comes on if a prob-
lem is detected in the engine or other
vehicle control system. If this occurs,
have a Yamaha dealer check the on-
board diagnostic 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 vehicle.
EAUU1810ABS warnin g lig ht “ ”
In normal operation, the ABS warning
light comes on when the key is turned
to “ON”, and goes off after traveling at
a speed of 10 km/h (6 mi/h) or higher.
If the ABS warning light:
1. Right turn signal indicator light “ ”
2. High beam indicator light “ ”
3. Coolant temperature warning light “ ”
4. Anti-lock Brake System (ABS) warning light “ ”
5. Engine trouble warning light “ ”
6. Left turn signal indicator light “ ”
6
5
4
1
2
3
ABS
ABS
UBV3E0E0.book Page 3 Monday, September 26, 2016 3:42 PM

Instrument and control functions
3-4
3 
does not come on when the key is
turned to “ON”
 comes on or flashes while riding
 does not go off after traveling at a
speed of 10 km/h (6 mi/h) or high-
er
The ABS may not work correctly. If any
of the above occurs, have a Yamaha
dealer check the system as soon as
possible. (See page 3-11 for an expla-
nation of the ABS.)
WARNING
EWA16041
If the ABS warnin g li ght does not go
off after travelin g at a speed of 10
km/h (6 mi/h) or hi gher, or if the
warnin g li ght comes on or flashes
while ri din g, the brake system re-
verts to conventional brakin g. If ei-
ther of the a bove occurs, or if the
warnin g li ght does not come on at
all, use extra caution to avoi d possi-
b le wheel lock during emer gency
b rakin g. Have a Yamaha dealer
check the brake system an d electri-
cal circuits as soon as possi ble.
TIP
The ABS warning light may come on
while accelerating the engine with the
vehicle on its centerstand, but this
does not indicate a malfunction.
EAUN0983
Multi-function meter unit
WARNING
EWA12423
Be sure to stop the vehicle before
makin g any settin g chan ges to the
multi-function meter unit. Chang ing
settin gs while ri din g can d istract the
operator an d increase the risk of an
acci dent.
The multi-function meter unit is
equipped with the following:
 a speedometer
 a clock
 a fuel meter
 an instantaneous fuel consump-
tion meter
 a multi-function display
TIP
B e s u r e t o t u r n t h e k e y t o “ O N ” b e -
fore using the “SELECT” and “RE-
SET” buttons.
 For the UK: To switch the speed-
ometer between km/h and MPH,
press the “SELECT” button for
1. Fuel meter
2. Clock
3. Speedometer
4. Instantaneous fuel consumption meter
5. “RESET” button
6. Multi-function display
7. “SELECT” button
2314
675
UBV3E0E0.book Page 4 Monday, September 26, 2016 3:42 PM

Instrument and control functions
3-14
3 d
ry, soft cloth, since fuel may
d eteriorate painted 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 gas-
oline vapor, or get some g asoline in
your eyes, see your d octor immedi-
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.
EAU76750
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.
TIP
 This mark identifies the recom-
mended fuel for this vehicle as
specified by European regulation
(EN228).
 Check that gasoline nozzle has
the same identifier when fueling.
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.
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.
Recommen ded fuel:
Regular unleaded gasoline (Gasohol
[E10] acceptable)
Fuel tank capacity: 6.6 L (1.7 US gal, 1.5 Imp.gal)
UBV3E0E0.book Page 14 Monday, September 26, 2016 3:42 PM
E5 E10

Instrument and control functions
3-19
3
Turn the key on.
Put the sidestand up.
Push the start switch while applying
either of the brake levers. The engine
will start.
Put the sidestand down.
If the engine stalls:
The sidestand switch is OK.
WARNING
The vehicle must be placed on the
centerstand during this inspection.
If a malfunction is noted, have a Yamaha dealer check the system
before riding.
UBV3E0E0.book Page 19 Monday, September 26, 2016 3:42 PM

For your safety – pre-operation checks
4-1
4
EAU63440
Inspect your vehicle each time you use it to make sure the vehicle is in safe oper-
ating condition. Always follow the inspection and maintenance procedures and
schedules described in the Owner’s Manual.
WARNING
EWA11152
Failure to inspect or maintain the vehicle properly increases the possibility
of an acci dent or equipment d amage. Do not operate the vehicle if you fin d
any pro blem. If a pro blem cannot be correcte d b y the proce dures provi ded
in this manual, have the vehicle inspecte d b y a Yamaha dealer.
Before using this vehicle, check the following points:
ITEM CHECKSPAGE
Fuel • Check fuel level in fuel tank.
• Refuel if necessary.
• Check fuel line for leakage.
• Check fuel tank overflow hose for obstructions, cracks
or damage, and check hose connection. 3-13,
3-15
En gine oil • Check oil level in engine.
• If necessary, add recommended oil to specified level.
• Check vehicle for oil leakage. 6-10
Final transmission oil • Check vehicle for oil leakage. 6-12
Coolant • Check coolant level in reservoir.
• If necessary, add recommended coolant to specified
level.
• Check cooling system for leakage. 6-13
Front brake • Check operation.
• If soft or spongy, have Yamaha dealer bleed hydraulic
system.
• Check brake pads for wear.
• Replace if necessary.
• Check fluid level in reservoir.
• If necessary, add specified brake fluid to specified level.
• Check hydraulic system for leakage. 6-23,
6-24, 6-25
Rear brake • Check operation.
• If soft or spongy, have Yamaha dealer bleed hydraulic
system.
• Check brake pads for wear.
• Replace if necessary.
• Check fluid level in reservoir.
• If necessary, add specified brake fluid to specified level.
• Check hydraulic system for leakage. 6-23,
6-24, 6-25
Throttle grip • Make sure that operation is smooth.
• Check throttle grip free play.
• If necessary, have Yamaha dealer adjust throttle grip
free play and lubricate cable and grip housing. 6-19,
6-27
UBV3E0E0.book Page 1 Monday, September 26, 2016 3:42 PM

Operation and important rid ing points
5-1
5
EAU15952
Read the Owner’s Manual carefully to
become familiar with all controls. If
there is a control or function you do not
understand, ask your Yamaha dealer.
WARNING
EWA10272
Failure to familiarize yourself with
the controls can lea d to loss of con-
trol, which coul d cause an acci dent
or injury.
EAU66721
Startin g the eng ine
NOTICE
ECA10251
See pag e 5-4 for en gine break-in in-
structions prior to operatin g the ve-
hicle for the first time.
In order for the ignition circuit cut-off
system to enable starting, the side-
stand must be up. See page 3-18 for more information. 1. Turn the main switch on. The engine trouble warning
light and the coolant temper-
ature warning light should
come on for a few seconds,
then go off.
 The ABS warning light should
come on and stay on until the
vehicle reaches a traveling
speed of 10 km/h (6 mi/h).
NOTICE
ECA15486
If a warnin g li ght does not come on
initially when the main switch is
turne d on, or if a warnin g li ght re-
mains on, see pa ge 3-3 for the corre-
spon din g warnin g li ght circuit
check.
2. Close the throttle completely.
3. While applying the front or rear brake, push the start switch.
If the engine does not start, re-
lease the start switch, wait a few
seconds, and then try again. Each
starting attempt should be as
short as possible to preserve the
battery. Do not crank the engine
more than 10 seconds on any one
attempt.
UBV3E0E0.book Page 1 Monday, September 26, 2016 3:42 PM