check oil 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

Smart key system
3-4
3Keep the smart key away from
strong magnetic fields and
magnetic objects such as key
holders, TVs, and computers.
Keep the smart key away from
electric medical equipment.
Do not allow oils, polishing
agents, fuel, or any strong
chemicals to come in contact
with the smart key. The smart
key body may become discol-
ored or cracked.
TIPThe smart key battery life is ap-
proximately two years, but this
may vary according to operating
conditions.
Replace the smart key battery
when the smart key system indi-
cator light flashes for 20 seconds
when the vehicle is turned on, or
when the smart key indicator light
does not come on when the smart
key button is pushed. (See page
3-6.) After changing the smart key
battery, if the smart key systemstill does not operate, check the
vehicle battery and then have a
Yamaha dealer check the vehicle.
If the smart key continually re-
ceives radio waves, the smart key
battery will discharge quickly. (For
example, when placed in the vicin-
ity of electrical products such as
televisions, radios, or computers.)
You can register up to six smart
keys for the same vehicle. See a
Yamaha dealer regarding spare
smart keys.
If a smart key is lost, contact a
Yamaha dealer immediately to
prevent the vehicle from being
stolen, etc.
EAU76474
Smart key
WARNING
EWA17952
The smart key should be carried
with you. Do not store it on the
vehicle.
When the smart key is within
operating range, exercise due
care because other people not
carrying the smart key can start
the engine and operate the vehi-
cle.1. Smart key indicator light
2. Smart key button
1
2
UBALE0E0.book Page 4 Wednesday, September 30, 2020 1:37 PM

For your safety – pre-operation checks
7-1
7
EAU1559B
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 accident or equipment damage.
Do not operate the vehicle if you find any problem. If a problem cannot be corrected by the procedures provided in
this manual, have the vehicle inspected by 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.6-15, 6-16
Engine oil• Check oil level in engine.
• If necessary, add recommended oil to specified level.
• Check vehicle for oil leakage.9-11
Final transmission oil• Check vehicle for oil leakage. 9-13
Coolant• Check coolant level in reservoir.
• If necessary, add recommended coolant to specified level.
• Check cooling system for leakage.9-15
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.9-21, 9-22, 9-23
UBALE0E0.book Page 1 Wednesday, September 30, 2020 1:37 PM

Operation and important riding points
8-1
8
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 could cause an accident
or injury.
EAU16842
Engine break-inThere is never a more important period
in the life of your engine than the period
between 0 and 1600 km (1000 mi). For
this reason, you should read the fol-
lowing material carefully.
Since the engine is brand new, do not
put an excessive load on it for the first
1600 km (1000 mi). The various parts in
the engine wear and polish themselves
to the correct operating clearances.
During this period, prolonged full-throt-
tle operation or any condition that
might result in engine overheating
must be avoided.
EAUM2012
0–1000 km (0–600 mi)
Avoid prolonged operation above 1/3
throttle. NOTICE: After 1000 km (600
mi) of operation, be sure to replace
the engine oil and final transmission
oil.
[ECA11662]
1000–1600 km (600–1000 mi)
Avoid prolonged operation above 1/2
throttle.1600 km (1000 mi) and beyond
The vehicle can now be operated nor-
mally.
NOTICE
ECA10271
If any engine trouble should occur
during the engine break-in period,
immediately have a Yamaha dealer
check the vehicle.
UBALE0E0.book Page 1 Wednesday, September 30, 2020 1:37 PM

Periodic maintenance and adjustment
9-4
9
11*Tires• Check tread depth and for dam-
age.
• Replace if necessary.
• Check air pressure.
• Correct if necessary.√√√√√
12*Wheel bearings• Check bearing for looseness or
damage.√√√√
13*Steering bearings• Check bearing assemblies for
looseness.√√√√
• Moderately repack with lithium-
soap-based grease.√
14*Chassis fasteners• Make sure that all nuts, bolts and
screws are properly tightened.√√√√√
15Front and rear
brake lever pivot
shaft• Lubricate with silicone grease.√√√√√
16Sidestand, center-
stand• Check operation.
• Lubricate with lithium-soap-
based grease.√√√√√
17*Sidestand switch• Check operation and replace if
necessary.√√√√√√
18*Front fork• Check operation and for oil leak-
age.
• Replace if necessary.√√√√
19*Shock absorber as-
semblies• Check operation and for oil leak-
age.
• Replace if necessary.√√√√ 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)
UBALE0E0.book Page 4 Wednesday, September 30, 2020 1:37 PM

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)
UBALE0E0.book Page 5 Wednesday, September 30, 2020 1:37 PM

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.
UBALE0E0.book Page 6 Wednesday, September 30, 2020 1:37 PM

Periodic maintenance and adjustment
9-11
9
EAU36112
CanisterThis model is equipped with a canister
to prevent the discharging of fuel vapor
into the atmosphere. Before operating
this vehicle, make sure to check the
following:
Check each hose connection.
Check each hose and canister for
cracks or damage. Replace if
damaged.
Make sure that the canister
breather is not blocked, and if
necessary, clean it.
EAU66994
Engine oil and oil strainerThe engine oil level should be checked
before each ride. In addition, the oil
must be changed and the oil strainer
cleaned at the intervals specified in the
periodic maintenance and lubrication
chart.
To check the engine oil level
1. Place the vehicle on the center-
stand. A slight tilt to the side can
result in a false reading.
2. Start the engine, warm it up for
several minutes, and then turn it
off.
3. Wait a few minutes until the oil set-
tles, remove the engine oil filler
cap, wipe the engine oil dipstick
clean, insert it back into the oil fill-
er hole (without screwing it in), and
then remove it again to check the
oil level. WARNING! The muffler
and muffler protector become
very hot during use. To avoid
possible burns, let the muffler
and protector cool before re-
moving the oil filler cap.
[EWA17810]
TIPThe engine oil should be between the
tip of the dipstick and the maximum
level mark.4. If the engine oil is not between the
tip of the dipstick and the maxi-
mum level mark, add sufficient oil
of the recommended type to raise
it to the correct level.
5. Insert the dipstick into the oil filler
hole, and then tighten the oil filler
cap.
1. Canister
2. Canister breather
2
1
1. Oil filler hole
2. O-ring
3. Engine oil dipstick
4. Maximum level mark
5. Tip of the engine oil dipstick
3245
1
UBALE0E0.book Page 11 Wednesday, September 30, 2020 1:37 PM

Periodic maintenance and adjustment
9-12
9 To change the engine oil and clean
the oil strainer
1. Start the engine, warm it up for
several minutes, and then turn it
off.
2. Place an oil pan under the engine
to collect the used oil.
3. Remove the engine oil filler cap
and engine oil drain bolts A and B
to drain the oil from the crankcase.
NOTICE: When removing the
engine oil drain bolt B, the O-
ring, compression spring, and
oil strainer will fall out. Take
care not to lose these parts.
[ECAT1022]
4. Clean the engine oil strainer with
solvent, and then check it for
damage and replace it if neces-
sary.
5. Install the engine oil strainer, com-
pression spring, new O-ring and
engine oil drain bolt B.TIPMake sure that the O-ring is properly
seated.
6. Install engine oil drain bolt A and
its new gasket, and then tighten
both drain bolts to their specified
torques.
7. Refill with the specified amount of
the recommended engine oil, and
then install and tighten the oil filler
cap.TIPBe sure to wipe off spilled oil on any
parts after the engine and exhaust sys-
tem have cooled down.NOTICE
ECA24060
Make sure that no foreign material
enters the crankcase.
1. Engine oil drain bolt A
2. Gasket
3. Oil strainer
4. Compression spring
5. O-ring
6. Engine oil drain bolt B
23
4
5
6
1
Tightening torque:
Engine oil drain bolt A:
20 N·m (2.0 kgf·m, 15 lb·ft)
Engine oil drain bolt B:
20 N·m (2.0 kgf·m, 15 lb·ft)
Recommended engine oil:
See page 11-1.
Oil quantity:
0.90 L (0.95 US qt, 0.79 Imp.qt)
UBALE0E0.book Page 12 Wednesday, September 30, 2020 1:37 PM

Periodic maintenance and adjustment
9-13
98. Start the engine, and then let it idle
for several minutes while checking
it for oil leakage. If oil is leaking,
immediately turn the engine off
and check for the cause.
9. Turn the engine off, and then
check the oil level and correct it if
necessary.
10. Reset the oil change tripmeter and
oil change indicator “OIL”. (See
page 6-7 for reset procedures.)
EAU85450
Why YamalubeYAMALUBE oil is a Genuine YAMAHA
Part born of the engineers’ passion
and belief that engine oil is an impor-
tant liquid engine component. We form
teams of specialists in the fields of me-
chanical engineering, chemistry, elec-
tronics and track testing, and have
them develop the engine together with
the oil it will use. Yamalube oils take full
advantage of the base oil’s qualities
and blend in the ideal balance of addi-
tives to make sure the final oil clears
our performance standards. Thus,
Yamalube mineral, semisynthetic and
synthetic oils have their own distinct
characters and value. Yamaha’s expe-
rience gained over many years of re-
search and development into oil since
the 1960’s helps make Yamalube the
best choice for your Yamaha engine.
EAU67822
Final transmission oilThe final transmission case must be
checked for oil leakage before each
ride. If any leakage is found, have a
Yamaha dealer check and repair your
motorcycle. In addition, the final trans-
mission oil must be changed as follows
at the intervals specified in the periodic
maintenance and lubrication chart.
1. Start the engine and warm up the
final transmission oil by riding the
motorcycle for several minutes.
2. Stop the engine and then place
the motorcycle on the center-
stand.
3. Place an oil pan under the final
transmission case to collect the
used oil.
4. Remove the final transmission oil
filler cap and its O-ring from the fi-
nal transmission case.
UBALE0E0.book Page 13 Wednesday, September 30, 2020 1:37 PM