2016 YAMAHA NMAX 125 belt

Periodic maintenance an d a djustment
6-17
6
EAU67174
Air filter an d V- belt case air fil-
ter elements
The 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.
Cleanin g the air filter check hose
1. 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.
TIP
If 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.
Replacin g 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 en gine shoul d never
b e operated without the air filter
element installed , otherwise the
piston(s) an d/or cylin der(s) may
b ecome excessively worn.
[ECA10482]
NOTICE
ECA21220
 The air filter element must be
replaced at the intervals speci-
fie d in the perio dic maintenance
an d lu brication chart.
1. Air filter check hose
1
1. Air filter case cover
2. Screw
1. Air filter element
2
21
1
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Periodic maintenance an d a djustment
6-18
6 
The air filter element nee ds
more frequent replacement if
you are ri din g in unusually wet
or dusty areas.
 Do not clean the air filter ele-
ment by blowin g it with com-
pressed air.
5. Install the air filter case cover by
installing the screws.
Cleanin g 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.
TIP
If dirt or water was found in the check
hose, be sure to check the V-belt case
air filter element for excessive dirt or
damage and clean or replace it if nec-
essary.
Cleanin g the V- belt case air filter el-
ement 1. Place the vehicle on the center- stand. 2. Remove the screws, and then pull
the V-belt case air filter element
cover outward and away from the
V-belt case.
3. Pull the V-belt case air filter ele- ment out, and then clean it with
solvent. After cleaning, remove
the remaining solvent by squeez-
ing the element. WARNING! Use
only a ded icated parts cleanin g
solvent. To avoi d the risk of fire
or explosion, do not use gaso-
line or solvents with a low flash
point.
[EWA10432] NOTICE: To avoi d
d amag ing the air filter element,
han dle it gently an d carefully,
an d d o not twist it.
[ECA10522]
1. V-belt case check hose
1
1. V-belt case air filter element cover
2. Screw
1. V-belt case air filter element
2
2
1
1
UBV3E0E0.book Page 18 Monday, September 26, 2016 3:42 PM

Periodic maintenance an d a djustment
6-19
6
4. Apply oil of the recommended
type to the entire surface of the
sponge material, and then
squeeze the excess oil out.
TIP
The air filter element should be
wet but not dripping.
 Check the air filter element for ex-
cessive dirt or damage and re-
place it if necessary.
5. Insert the element into the V-belt
case.
6. Install the air filter element cover by installing the screws.
EAU21386
Checkin g the throttle grip free
play
Measure the throttle grip free play as
shown.
Periodically check the throttle grip free
play and, if necessary, have a Yamaha
dealer adjust it.
Recommen ded oil:
Yamaha foam air filter oil or other
quality foam air filter oil
1. Throttle grip free play
Throttle grip free play:
3.0–5.0 mm (0.12–0.20 in)
1
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Periodic maintenance an d a djustment
6-26
6
EAU22733
Chan gin g the brake flui d
Have a Yamaha dealer change the
brake fluid at the intervals specified in
the periodic maintenance and lubrica-
tion chart. In addition, have the oil seals
of the master cylinders and calipers as
well as the brake hoses replaced at the
intervals listed below or whenever they
are damaged or leaking.
 Oil seals: Replace every two
years.
 Brake hoses: Replace every four
years.
EAUU0311
Checkin g the V- belt
The V-belt must be checked and re-
placed by a Yamaha dealer at the inter-
vals specified in the periodic
maintenance and lubrication chart.
UBV3E0E0.book Page 26 Monday, September 26, 2016 3:42 PM

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: 2.0 m (6.56 ft)
Wei ght:
Curb weight:
127 kg (280 lb)
Engine:
Combustion cycle:
4-stroke
Cooling system:
Liquid cooled
Valve train: SOHC
Number of cylinders: Single cylinder
Displacement:
125 cm³ (GPD125-A)
155 cm³ (GPD150-A)
Bore × stroke:
52.0 × 5 8 . 7 m m (2 . 0 5 × 2.31 in) (GPD125-A)
58.0 × 5 8 . 7 m m (2 . 2 8 × 2.31 in) (GPD150-A)
Compression ratio:
10.5 : 1 (GPD150-A)
11.2 : 1 (GPD125-A)
Starting system:
Electric starter
Lubrication system: Wet sump
Engine oil:
Recommended brand:
YAMALUBE
SAE viscosity grades: 10W-40
Recommended engine oil grade: API service SG type or higher, JASO
standard MA or MB Engine oil quantity:
Oil change:
0.90 L (0.95 US qt, 0.79 Imp.qt)
Final transmission oil:
Type: Motor oil SAE 10W-30 type SE or higher or
Gear oil SAE 85W GL-3
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 element
Fuel:
Recommended fuel:Regular unleaded gasoline (Gasohol [E10]
acceptable)
Fuel tank capacity: 6.6 L (1.7 US gal, 1.5 Imp.gal)
Fuel reserve amount: 1.4 L (0.37 US gal, 0.31 Imp.gal)
Fuel injection:
Throttle body:ID mark:
2DS1 00
Spark 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, shoe
Drivetrain:
Primary reduction ratio:1.000
Final drive: Gear
Secondary reduction ratio:
10.208 (56/16 x 35/12)
Transmission type: V-belt automatic
Chassis:
Frame type:
Underbone
UBV3E0E0.book Page 1 Monday, September 26, 2016 3:42 PM

10-1
10
Index
A
ABS ....................................................... 3-11
ABS warning light ................................... 3-3
Acceleration and deceleration ................ 5-3
Air filter and V-belt case air filter
elements ............................................. 6-17
Auxiliary light bulb, replacing ................ 6-34
B
Battery .................................................. 6-30
Brake fluid, changing ............................ 6-26
Brake fluid level, checking .................... 6-25
Brake lever, front .................................. 3-10
Brake lever, rear.................................... 3-11
Brake levers, lubricating ....................... 6-28
Brake light ............................................. 6-35
Braking.................................................... 5-3
C
Cables, checking and lubricating ......... 6-27
Care ........................................................ 7-1
Catalytic converter ................................ 3-15
Centerstand and sidestand, checking and lubricating .................... 6-28
Coolant ................................................. 6-13
Coolant temperature warning light ......... 3-3
D
Data recording, vehicle ........................... 9-2
Diagnostic connector.............................. 9-2
Dimmer switch ........................................ 3-9
E
Engine break-in....................................... 5-4
Engine oil and oil strainer...................... 6-10
Engine serial number .............................. 9-1
Engine trouble warning light ................... 3-3
F
Final transmission oil ............................ 6-12
Front and rear brake lever free play, checking ............................................. 6-23
Front and rear brake pads, checking.... 6-24
Front fork, checking .............................. 6-29
Fuel ....................................................... 3-13
Fuel consumption, tips for reducing ....... 5-4
Fuel tank cap ........................................ 3-12
Fuel tank overflow hose ........................ 3-15
Fuses, replacing.................................... 6-32
H
Handlebar switches ................................ 3-9
Headlight............................................... 6-33
High beam indicator light........................ 3-3
Horn switch ........................................... 3-10
I
Identification numbers ............................ 9-1
Ignition circuit cut-off system............... 3-18
Indicator lights and warning lights ......... 3-3
K
Keyhole shutter ...................................... 3-2
M
Main switch/steering lock....................... 3-1
Maintenance and lubrication, periodic ... 6-4
Maintenance, emission control system.................................................. 6-3
Matte color, caution ............................... 7-1
Model label ............................................. 9-1
Multi-function meter unit ........................ 3-4
P
Panels, removing and installing.............. 6-7
Parking ................................................... 5-5
Part locations ......................................... 2-1
S
Safe-riding points ................................... 1-5
Safety information .................................. 1-1
Seat ...................................................... 3-16
Sidestand ............................................. 3-17
Spark plug, checking ............................. 6-9
Specifications ......................................... 8-1
Starting off.............................................. 5-2
Starting the engine ................................. 5-1
Start switch .......................................... 3-10
Steering, checking................................ 6-29
Storage ................................................... 7-4
Storage compartments ........................ 3-16
T
Taillight bulb, replacing ........................ 6-35
Throttle grip and cable, checking and lubricating .................... 6-27
Throttle grip free play, checking........... 6-19
Tires ...................................................... 6-20
Tool kit.................................................... 6-2
Troubleshooting ................................... 6-39
Troubleshooting charts ........................ 6-40
Turn signal indicator lights ..................... 3-3
Turn signal light bulb (front), replacing ............................................ 6-37
Turn signal light bulb (rear), replacing ............................................ 6-38
Turn signal switch .................................. 3-9
V
Valve clearance .................................... 6-20
V-belt, checking ................................... 6-26
Vehicle identification number ................. 9-1
UBV3E0E0.book Page 1 Monday, September 26, 2016 3:42 PM