2015 YAMAHA NMAX check engine

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

Safety information
1-3
1Avoi
d Car bon Monoxi de Poisonin g
All engine exhaust contains carbon
monoxide, a deadly gas. Breathing
carbon monoxide can cause head-
aches, dizziness, drowsiness, nausea,
confusion, and eventually death.
Carbon Monoxide is a colorless, odor-
less, tasteless gas which may be
present even if you do not see or smell
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)
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Instrument and control functions
3-3
3
EAU11081
Hi gh beam in dicator li ght “ ”
This indicator light comes on when the
high beam of the headlight is switched
on.
EAU67440
Coolant temperature warnin g
lig 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.
TIPIf the engine overheats, see page 6-38
for further instructions.
EAU42775
En gine trou ble warnin g li ght “ ”
This warning light comes on if a prob-
lem is detected in the electrical circuit
monitoring the engine. If this occurs,
have a Yamaha dealer check the self-
diagnosis system. (See page 3-9 for an
explanation of the self-diagnosis de-
vice.)
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.
EAUU1810
ABS 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:  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 warning light 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 lig ht comes on or flashes
while ri din g, the b rake system re-
verts to conventional brakin g. If ei-
ther of the a bove occurs, or if the
warnin g lig ht does not come on at
all, use extra caution to avoi d possi-
ABS
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Instrument and control functions
3-4
3 b
le wheel lock during emer gency
b rakin g. Have a Yamaha d ealer
check the brake system an d electri-
cal circuits as soon as possi ble.
TIPThe ABS warning light may come on
while accelerating the engine with the
vehicle on its centerstand, but this
does not indicate a malfunction.
EAUN0981
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. Chan gin g
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Be sure to turn the key to “ON” be-
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
one second when the multi-func-
tion meter is in odometer mode,
tripmeter 1, or tripmeter 2 mode .Speed ometer
The speedometer shows the vehicle’s
traveling speed.
1. Fuel meter
2. Clock
3. Speedometer
4. Instantaneous fuel consumption meter
5. “RESET” button
6. Multi-function display
7. “SELECT” button
2
3
1
4
6
7
5
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Instrument and control functions
3-9
3
The V-belt replacement indicator “V-
BELT” will flash at every 18000 km
(10500 mi) thereafter to indicate that
the V-belt should be replaced.
After replacing the V-belt, reset the V-
belt replacement tripmeter and the V-
belt replacement indicator. To reset
them both, select the V-belt replace-
ment tripmeter, and then push the
“RESET” button for one second. Then,
while “V-BELT” and the V-belt replace-
ment tripmeter are flashing, push the
“RESET” button for three seconds. The
V-belt replacement indicator will be re-
set.
If the V-belt is replaced before the V-
belt replacement indicator comes on
(i.e., before the periodic V-belt replace-
ment interval has been reached), the V-
belt replacement tripmeter must be re-
set for the next periodic V-belt replace-
ment to be indicated at the correct
time. Self-d
iagnosis mo de
This model is equipped with a self-di-
agnosis device for various electrical
circuits.
If a problem is detected in any of those
circuits, the engine trouble warning
light will come on and the display will
indicate an error code.
If the display indicates any error codes,
note the code number, and then have
a Yamaha dealer check the vehicle.
NOTICE
ECA11591
If the display in dicates an error
co de, the vehicle shoul d b e checked
as soon as possi ble in or der to avoi d
en gine damag e.
1. Engine trouble warning light “ ”
2. Error code display
1
2
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Instrument and control functions
3-18
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.
• The vehicle must be placed on the center-
stand during this inspection.• If a malfunction is noted, have a Yamaha
dealer check the system before riding.
WARNING
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For your safety – pre-operation checks
4-1
4
EAU15599
Inspect your vehicle each time you use it to make sure the vehicle is in safe operating 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 damag e.
Do not operate the vehicle if you fin d any pro blem. If a pro blem cannot be corrected 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 CHECKS PAGE
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, 3-14
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. 6-21, 6-22, 6-22
U2DSE0E0.book Page 1 Thursday, March 19, 2015 10:34 AM

Operation and important ri din g 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 lead to loss of con-
trol, which coul d cause an acci dent
or injury.
EAU66720
Startin g the en gineNOTICE
ECA10251
See pag e 5-3 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 3-17 for more information. 1. Turn the key to “ON”. The following warning lights
should come on for a few sec-
onds, then go off. Engine trouble warning light
 Coolant temperature warning
lightNOTICE
ECA15485
If a warnin g lig ht does not come on
initially when the key is turne d to
“ON”, or if a warnin g lig ht remains
on, see pa ge 3-2 for the correspon d-
in g warnin g lig ht circuit check.
The ABS warning light should
come on when the main switch is
turned to “ON” and then go off af-
ter traveling at a speed of 10 km/h
(6 mi/h) or higher.
NOTICE
ECA17682
If the ABS warnin g li ght does not
come on an d then g o off as ex-
plained above, see pag e 3-2 for the
warnin g li ght circuit check.2. Close the throttle completely.
3. Start the engine by pushing the
start switch while applying the
front or rear brake.
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.NOTICE
ECA11043
For maximum en gine life, never ac-
celerate har d when the en gine is
col d!
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