belt YAMAHA NMAX 125 2021 Owners Manual

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
Smart key system ........................... 3-1
Smart key system ........................... 3-1
Operating range of the smart key
system......................................... 3-2
Handling of the smart key and
mechanical keys ......................... 3-3
Smart key ....................................... 3-4
Replacing the smart key battery..... 3-6
Main switch .................................... 3-7
Stop and Start System..................... 4-1
Stop and Start System ................... 4-1
Stop and Start System operation ... 4-1
Special features .............................. 5-1
CCU (Communication Control
Unit) ............................................. 5-1
Instrument and control functions... 6-1
Indicator lights and warning
lights............................................ 6-1
Multi-function meter unit ................ 6-3
Handlebar switches ........................ 6-9Front brake lever ........................... 6-11
Rear brake lever ............................ 6-11
ABS ............................................... 6-11
Traction control system ................ 6-12
Fuel tank cap ................................ 6-14
Fuel ............................................... 6-15
Fuel tank overflow hose ................ 6-16
Catalytic converter ........................ 6-16
Seat ............................................... 6-17
Helmet holders .............................. 6-17
Storage compartments ................. 6-18
Adjusting the shock absorber
assemblies ................................. 6-19
Power outlet ................................. 6-20
Sidestand ...................................... 6-21
Ignition circuit cut-off system ....... 6-22
For your safety – pre-operation
checks............................................... 7-1
Operation and important riding
points................................................. 8-1
Engine break-in ............................... 8-1
Starting the engine .......................... 8-2
Starting off ...................................... 8-2
Acceleration and deceleration ........ 8-3
Braking ............................................ 8-3
Tips for reducing fuel
consumption ................................ 8-3
Parking ........................................... 8-4Periodic maintenance and
adjustment........................................ 9-1
Tool kit ............................................ 9-1
Periodic maintenance chart for
the emission control system ....... 9-2
General maintenance and
lubrication chart .......................... 9-3
Removing and installing panels ...... 9-7
Checking the spark plug................. 9-9
Canister ........................................ 9-11
Engine oil and oil strainer ............. 9-11
Why Yamalube.............................. 9-13
Final transmission oil .................... 9-13
Coolant ......................................... 9-15
Air filter and V-belt case air filter
elements .................................... 9-16
Checking the throttle grip
free play..................................... 9-19
Valve clearance............................. 9-19
Tires .............................................. 9-19
Cast wheels .................................. 9-21
Checking the front and rear
brake lever free play .................. 9-21
Checking the front and rear
brake pads ................................ 9-22
Checking the brake fluid level ...... 9-23
Changing the brake fluid .............. 9-24
Checking the V-belt ...................... 9-24
Checking and lubricating the
cables ........................................ 9-25UBALE0E0.book Page 1 Wednesday, September 30, 2020 1:37 PM

Description
2-1
2
EAU10411
Left view
1,2 3 4
98756
1. Storage compartment A (page 6-18)
2. Power outlet (page 6-20)
3. Fuel tank cap (page 6-14)
4. Tool kit (page 9-1)
5. Rear storage compartment (page 6-18)
6. Air filter element (page 9-16)
7. Final transmission oil filler cap (page 9-13)
8. Final transmission oil drain bolt (page 9-13)9. V-belt case air filter element (page 9-16)UBALE0E0.book Page 1 Wednesday, September 30, 2020 1:37 PM

Instrument and control functions
6-2
6Do not remove or alter the O2 sen-
sor, air induction system, or ex-
haust parts (catalysts or EXUP,
etc.).
Maintain proper V-belt and drive
belt (if equipped).
Maintain correct tire pressure.
Do not operate the vehicle in an
extreme manner. For example, re-
peated or excessive opening and
closing of the throttle, racing,
burnouts, wheelies, etc.
EAU88890
ABS warning light “ ”
This warning light comes on when the
vehicle is first turned on, and goes off
after starting riding. If the warning light
comes on while riding, the anti-lock
brake system may not work correctly.
WARNING
EWA16043
If the ABS warning light does not
turn off after reaching 10 km/h (6
mi/h), or if the warning light comes
on while riding:
Use extra caution to avoid pos-
sible wheel lock during emer-
gency braking. Have a Yamaha dealer check
the vehicle as soon as possible.
TIPThe ABS warning light may come on
while revving the engine with the vehi-
cle on its centerstand, but this does
not indicate a malfunction.
EAU88930
Traction control system indicator
light “ ”
This indicator light will flash when trac-
tion control has engaged.
If the traction control system is turned
off, this indicator light will come on.
(See page 6-12.)TIPWhen the vehicle is turned on, the light
should come on for a few seconds and
then go off. If the light does not come
on, or if the light remains on, have a
Yamaha dealer check vehicle.
EAUN2770
Smart key system indicator
light “ ”
This indicator light communicates the
status of the smart key system. When
the smart key system is operating nor-
mally, this indicator light will be off. If
there is an error in the smart key sys-
tem, the indicator light will flash. The
indicator light will also flash when com-
munication between the vehicle and
smart key takes place and when cer-
tain smart key system operations are
carried out.
EAUN2830
Stop and Start System indicator
light “ ”
This indicator light comes on when the
Stop and Start System activates. The
indicator light will flash when the en-
gine is automatically stopped by the
Stop and Start System.TIPEven if the Stop and Start Switch is set
to Ž, this indicator light may not
come on. (See page 4-1.)
A
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Instrument and control functions
6-6
6
EAUN2800
Multi-function display
The multi-function display is equipped
with the following:
an odometer (ODO)
two tripmeters (TRIP 1 and TRIP 2)
a fuel reserve tripmeter (TRIP F)
an oil change tripmeter (OIL TRIP)
an oil change indicator
a V-belt replacement tripmeter (V-
BELT TRIP)
a V-belt replacement indicator
an instantaneous fuel consump-
tion display (F/ECO)
an average fuel consumption dis-
play (AVE F/ECO)
a battery voltage display (BATT)a traction control system display
(TCS)
Push the “MENU” switch to change
the display in the following order:
ODO and F/ECO → TRIP 1 and AVE
F/ECO → TRIP 2 and AVE F/ECO →
TRIP F → BATT → TCS → OIL TRIP →
V-BELT TRIP → ODO and F/ECO
TIPThe fuel reserve tripmeter appears
only when you are low on fuel.
The oil change tripmeter and V-
belt replacement tripmeter are not
displayed while the vehicle is
moving.
There is an average fuel consump-
tion display for each tripmeter
(TRIP 1 and TRIP 2). When a trip-
meter is reset, the average fuel
consumption display for that trip-
meter will also be reset.
EAU86890
Odometer
The odometer shows the total distance
traveled by the vehicle.TIPThe odometer will lock at 999999 and
cannot be reset.
1. Multi-function display
1
1. Odometer
1
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Instrument and control functions
6-8
6
TIPWhen the engine oil has been
changed, the oil change tripmeter and
the oil change indicator must be reset.
Otherwise, the oil change indicator will
not come on at the correct time.
EAUN3070
V-belt replacement tripmeter
This tripmeter shows the distance trav-
eled since the V-belt was last replaced.
The V-belt replacement indicator “V-
BELT” will flash every 18000 km
(11200 mi) to indicate that the V-belt
should be replaced.To reset both the tripmeter and the in-
dicator, select the V-belt replacement
tripmeter, and then push the “MENU”
switch until “V-BELT” and the tripme-
ter start flashing. While “V-BELT” and
the tripmeter are flashing, push the
“MENU” switch until the tripmeter is
reset.
TIPWhen the V-belt is replaced, the trip-
meter and indicator must be reset.
Otherwise, the V-belt replacement in-
dicator will not come on at the correct
time.
EAU86940
Instantaneous fuel consumption
displayThis display shows fuel consumption
under current riding conditions. It can
be set to either “km/L” or “L/100 km”,
or “MPG” when using miles.
“km/L”: the distance that can be
traveled on 1.0 L of fuel.
“L/100 km”: the amount of fuel
necessary to travel 100 km.
“MPG”: the distance that can be
traveled on 1.0 Imp.gal of fuel.
TIPWhen traveling under 10 km/h (6 mi/h),

EAU86950
Average fuel consumption display
1. V-belt replacement indicator “V-BELT”
2. V-belt replacement tripmeter
21
1. Instantaneous fuel consumption display
1
1. Average fuel consumption display
1
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Periodic maintenance and adjustment
9-3
9
EAU71342
General maintenance and lubrication chartNO. ITEM CHECK OR MAINTENANCE JOBODOMETER READING
ANNUAL
CHECK 1000 km
(600 mi)6000 km
(3500 mi)12000 km
(7000 mi)18000 km
(10500 mi)24000 km
(14000 mi)
1*Diagnostic system
check• Perform dynamic inspection us-
ing Yamaha diagnostic tool.
• Check the error codes.√√√√√√
2*Air filter element• Replace. Every 18000 km (10500 mi)
3Air filter case check
hose• Clean.√√√√√
4*V-belt case air filter
element• Clean.
• Replace if necessary.√√√√√
5*Battery• Check voltage.
• Charge if necessary.√√√√√√
6*Front brake• Check operation, fluid level, and
for fluid leakage.
• Replace brake pads if necessary.√√√√√√
7*Rear brake• Check operation, fluid level, and
for fluid leakage.
• Replace brake pads if necessary.√√√√√√
8*Brake hose• Check for cracks or damage.√√√√√
• Replace. Every 4 years
9*Brake fluid• Change. Every 2 years
10*Wheels• Check runout and for damage.
• Replace if necessary.√√√√
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Periodic maintenance and adjustment
9-5
9
20 Engine oil• Change (warm engine before
draining).
• Check oil level and vehicle for oil
leakage.At the initial interval and when the oil change indicator flashes or
comes on.√
21*Engine oil strainer• Clean.√
22*Final transmission
oil• Check vehicle for oil leakage.√√√√√
• Change.√√√
23*Cooling system• Check coolant level and vehicle
for coolant leakage.√√√√√
• Change. Every 3 years
24*V-belt• Replace. When the V-belt replacement indicator flashes or comes on
25*Front and rear
brake switches• Check operation.√√√√√√
26*Moving parts and
cables• Lubricate.√√√√√
27*Throttle grip hous-
ing and cable• Check operation and free play.
• Adjust the throttle cable free play
if necessary.
• Lubricate the throttle grip housing
and cable.√√√√√
28*Lights, signals and
switches• Check operation.
• Adjust headlight beam.√√√√√√ NO. ITEM CHECK OR MAINTENANCE JOBODOMETER READING
ANNUAL
CHECK 1000 km
(600 mi)6000 km
(3500 mi)12000 km
(7000 mi)18000 km
(10500 mi)24000 km
(14000 mi)
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Periodic maintenance and adjustment
9-6
9
EAU72790
TIPEngine air filter and V-belt air filter
• This model’s engine air filter is equipped with a disposable oil-coated paper element, which must not be cleaned
with compressed air to avoid damaging it.
• The engine air filter element needs to be replaced and the V-belt air filter element needs to be serviced more fre-
quently when riding in unusually wet or dusty areas.
Hydraulic brake service
• After disassembling the brake master cylinders and calipers, always change the fluid. Regularly check the brake fluid
levels and fill the reservoirs as required.
• Every two years replace the internal components of the brake master cylinders and calipers, and change the brake
fluid.
• Replace the brake hoses every four years and if cracked or damaged.
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Periodic maintenance and adjustment
9-16
9 added to the coolant, have a
Yamaha dealer check the anti-
freeze content of the coolant as
soon as possible, otherwise the
effectiveness of the coolant will
be reduced.
[ECA10473]
6. Install the coolant reservoir cover.
7. Place the right floorboard mat in
the original position and push it
downward to secure it.
EAU33032
Changing the coolant
The coolant must be changed at the in-
tervals specified in the periodic main-
tenance and lubrication chart. Have a
Yamaha dealer change the coolant.
WARNING! Never attempt to remove
the radiator cap when the engine is
hot.
[EWA10382]EAU67174
Air filter and V-belt case air fil-
ter elementsThe air filter element should be re-
placed and the V-belt case air filter el-
ement should be cleaned at the
intervals specified in the periodic main-
tenance and lubrication chart. Service
the air filter elements more frequently if
you are riding in unusually wet or dusty
areas. The air filter check hose and V-
belt case air filter check hose must be
frequently checked and cleaned if nec-
essary.
Cleaning the air filter check hose
1. Coolant reservoir capCoolant reservoir capacity (up to
the maximum level mark):
0.13 L (0.14 US qt, 0.11 Imp.qt)
1
1. Air filter check hose
1
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Periodic maintenance and adjustment
9-17
91. Check the hose on the rear side of
the air filter case for accumulated
dirt or water.
2. If dirt or water is visible, remove
the hose from the clamp, clean it,
and then install it.
TIPIf dirt or water was found in the check
hose, be sure to check the air filter ele-
ment for excessive dirt or damage and
replace it if necessary.Replacing the air filter element
1. Place the vehicle on the center-
stand.
2. Remove the air filter case cover by
removing the screws.3. Pull the air filter element out.
4. Insert a new air filter element into
the air filter case. NOTICE: Make
sure that the air filter element is
properly seated in the air filter
case. The engine should never
be operated without the air filter
element installed, otherwise the
piston(s) and/or cylinder(s) may
become excessively worn.
[ECA10482]
NOTICE
ECA21220
The air filter element must be
replaced at the intervals speci-
fied in the periodic maintenance
chart.The air filter element should be
replaced more frequently if you
often ride in the rain or dusty ar-
eas.
The air filter cannot be cleaned
by blowing it with compressed
air. It must be replaced.
5. Install the air filter case cover by
installing the screws.
Cleaning the V-belt case check hose
1. Check the hose on the rear side of
the V-belt case for accumulated
dirt or water.
2. If dirt or water is visible, remove
the hose from the clamp, clean it,
and then install it.
1. Air filter case cover
2. Screw
21
2
2
1. Air filter element
11
1. V-belt case check hose
1
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