
Periodic maintenance and adjustment
6-9
6To install the spark plug
1. Clean the surface of the spark
plug gasket and its mating sur-
face, and then wipe off any grime
from the spark plug threads.
2. Install the spark plug with the
spark plug wrench, and then tight-
en it to the specified torque.
TIP
If a torque wrench is not available
when installing a spark plug, a good
estimate of the correct torque is 1/4…
1/2 turn past finger tight. However, the
spark plug should be tightened to the
specified torque as soon as possible.
3. Install the spark plug cap.
4. Install the panel.
EAU61003
Engine oil and oil strainer
The 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 filler
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]
TIP
The engine oil should be between the
tip of the dipstick and the maximum
level mark.
Tightening torque:
Spark plug:
13 N·m (1.3 kgf·m, 9.4 lb·ft)
UBR7E0E0.book Page 9 Tuesday, October 25, 2016 2:44 PM

Periodic maintenance and adjustment
6-12
6 6. Install the final transmission oil
drain bolt and its new gasket, and
then tighten the bolt to the speci-
fied torque.
7. Refill with the specified amount of
the recommended final transmis-
sion oil. WARNING! Make sure
that no foreign material enters
the final transmission case.
Make sure that no oil gets on
the tire or wheel.
[EWA11312]
8. Install the final transmission oil fill-
er cap and its new O-ring, and
then tighten the oil filler cap.
9. Check the final transmission case
for oil leakage. If oil is leaking,
check for the cause.
EAU20071
Coolant
The coolant level should be checked
before each ride. In addition, the cool-
ant must be changed at the intervals
specified in the periodic maintenance
and lubrication chart.
EAU40047To check the coolant level
1. Place the vehicle on the center-
stand.
TIP
zThe coolant level must be
checked on a cold engine since
the level varies with engine tem-
perature.
zMake sure that the vehicle is posi-
tioned straight up when checking
the coolant level. A slight tilt to the
side can result in an incorrect
reading.
2. Check the coolant level in the
coolant reservoir.
TIP
The coolant should be between the
minimum and maximum level marks.
1. Final transmission oil drain bolt
2. Gasket
Tightening torque:
Final transmission oil drain bolt:
20 N·m (2.0 kgf·m, 14 lb·ft)
Recommended final transmission
oil:
See page 8-1.
Oil quantity:
0.15 L (0.16 US qt, 0.13 Imp.qt)
12
1. Coolant reservoir cap
2. Coolant reservoir
3. Maximum level mark
4. Minimum level mark
34
2
1
UBR7E0E0.book Page 12 Tuesday, October 25, 2016 2:44 PM

Periodic maintenance and adjustment
6-34
6
EAU60701
Troubleshooting
Although Yamaha vehicles receive a
thorough inspection before shipment
from the factory, trouble may occur
during operation. Any problem in the
fuel, compression, or ignition systems,
for example, can cause poor starting
and loss of power.
The following troubleshooting charts
represent quick and easy procedures
for checking these vital systems your-
self. However, should your vehicle re-
quire any repair, take it to a Yamaha
dealer, whose skilled technicians have
the necessary tools, experience, and
know-how to service the vehicle prop-
erly.
Use only genuine Yamaha replace-
ment parts. Imitation parts may look
like Yamaha parts, but they are often
inferior, have a shorter service life and
can lead to expensive repair bills.
WARNING
EWA15142
When checking the fuel system, do
not smoke, and make sure there are
no open flames or sparks in the ar-
ea, including pilot lights from water
heaters or furnaces. Gasoline or
gasoline vapors can ignite or ex-
plode, causing severe injury or prop-
erty damage.
UBR7E0E0.book Page 34 Tuesday, October 25, 2016 2:44 PM

Vehicle care and storage
7-3
71. Clean the vehicle with cold water
and a mild detergent after the en-
gine has cooled down. NOTICE:
Do not use warm water since it
increases the corrosive action
of the salt.
[ECA10792]
2. Apply a corrosion protection spray
on all metal, including chrome-
and nickel-plated, surfaces to pre-
vent corrosion.
Cleaning the windshield
Avoid using any alkaline or strong acid
cleaner, gasoline, brake fluid, or any
other solvent. Clean the windshield
with a cloth or sponge dampened with
a mild detergent, and then wash it off
thoroughly with water. For additional
cleaning, use Yamaha Windshield
Cleaner or another high-quality wind-
shield cleaner. Some cleaning com-
pounds for plastics may leave
scratches on the windshield. Before
using such cleaners, test an area of the
windshield which does not affect your
visibility and which cannot be easily
recognized.
After cleaning
1. Dry the vehicle with a chamois or
an absorbing cloth.
2. Use a chrome polish to shine
chrome, aluminum, and stainless-
steel parts, including the exhaust
system. (Even the thermally in-
duced discoloring of stainless-
steel exhaust systems can be re-
moved through polishing.)3. To prevent corrosion, it is recom-
mended to apply a corrosion pro-
tection spray on all metal,
including chrome- and nickel-plat-
ed surfaces.
4. Use spray oil as a universal clean-
er to remove any remaining dirt.
5. Touch up minor paint damage
caused by stones, etc.
6. Wax all painted surfaces.
7. Let the vehicle dry completely be-
fore storing or covering it.WARNING
EWA17830
Contaminants on the brakes or tires
can cause loss of control.
zMake sure that there is no oil or
wax on the brakes or tires. If
necessary, clean the brake
discs and brake linings with a
regular brake disc cleaner or
acetone, and wash the tires with
warm water and a mild deter-
gent.
zBefore operating the vehicle
test its braking performance
and cornering behavior.
NOTICE
ECAU0022
zApply spray oil and wax spar-
ingly and make sure to wipe off
any excess.
zNever apply oil or wax to any
rubber parts, plastic parts or
headlight, taillight and meter
lenses, but treat them with a
suitable care product.
zAvoid using abrasive polishing
compounds as they will wear
away the paint.
UBR7E0E0.book Page 3 Tuesday, October 25, 2016 2:44 PM

Specifications
8-3
8
Meter lighting:
LED
High beam indicator light:
LED
Turn signal indicator light:
LED
Coolant temperature warning light:
LED
Engine trouble warning light:
LED
ABS warning light:
LED (MWS125-A)
Fuse(s):
Main fuse:
15.0 A
Main fuse 2:
7.5 A
Terminal fuse 1:
2.0 A
Signaling system fuse:
7.5 A
ABS control unit fuse:
7.5 A (MWS125-A)
ABS motor fuse:
30.0 A (MWS125-A)
ABS solenoid fuse:
30.0 A (MWS125-A)
UBR7E0E0.book Page 3 Tuesday, October 25, 2016 2:44 PM

10-1
10
Index
A
ABS (for ABS models) ........................... 3-11
ABS warning light (for ABS models) ....... 3-4
Acceleration and deceleration ................ 5-3
Accessory box ...................................... 3-17
Air filter and V-belt case air filter
elements ............................................. 6-14
Auxiliary DC connector ......................... 3-22
Auxiliary DC jack ................................... 3-21
Auxiliary lights ....................................... 6-32
B
Battery .................................................. 6-28
Brake fluid, changing ............................ 6-23
Brake fluid level, checking .................... 6-22
Brake lever, front .................................. 3-10
Brake lever, rear.................................... 3-10
Brake levers, lubricating ....................... 6-25
Brake/tail light ....................................... 6-32
Braking.................................................... 5-3
C
Cables, checking and lubricating ......... 6-24
Care ........................................................ 7-1
Catalytic converter ................................ 3-14
Centerstand and sidestand,
checking and lubricating .................... 6-25
Coolant ................................................. 6-12
Coolant temperature warning light ......... 3-3
D
Data recording, vehicle ........................... 9-2
Diagnostic connector.............................. 9-2
Dimmer switch ........................................ 3-9
E
Eco indicator light ................................... 3-3
Engine break-in....................................... 5-4
Engine oil and oil strainer........................ 6-9
Engine serial number .............................. 9-1
Engine trouble warning light ................... 3-3
F
Final transmission oil ............................ 6-11
Front and rear brake pads, checking.... 6-21
Front brake lever free play, checking ... 6-20
Front fork, checking .............................. 6-26
Fuel ....................................................... 3-12
Fuel consumption, tips for reducing ....... 5-4
Fuel tank cap ........................................ 3-12
Fuel tank overflow hose ........................ 3-14
Fuses, replacing.................................... 6-30
H
Handlebar switches ................................ 3-9
Headlight............................................... 6-31High beam indicator light ....................... 3-3
Horn switch ............................................ 3-9
I
Identification numbers ............................ 9-1
Ignition circuit cut-off system............... 3-19
Indicator lights and warning lights ......... 3-3
K
Keyhole shutter ...................................... 3-2
L
Leaning system, checking .................... 6-28
License plate light bulb, replacing........ 6-33
Luggage hook ...................................... 3-18
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 ........................ 3-5
P
Panel, removing and installing ............... 6-7
Parking ................................................... 5-5
Part locations ......................................... 2-1
Passenger footrest ............................... 3-15
R
Rear brake lever free play, checking .... 6-20
S
Safe-riding points ................................... 1-6
Safety information .................................. 1-1
Seat ...................................................... 3-15
Sidestand ............................................. 3-18
Spark plug, checking ............................. 6-8
Specifications ......................................... 8-1
Starting off.............................................. 5-2
Starting the engine ................................. 5-1
Start switch ............................................ 3-9
Steering, checking................................ 6-26
Steering tie rod, checking .................... 6-27
Storage ................................................... 7-4
Storage compartment .......................... 3-16
T
Throttle grip and cable,
checking and lubricating .................... 6-24
Throttle grip free play, checking........... 6-16
Tires ...................................................... 6-17
Tool kit.................................................... 6-2
Troubleshooting ................................... 6-34
Troubleshooting charts ........................ 6-35
Turn signal indicator lights ..................... 3-3
UBR7E0E0.book Page 1 Tuesday, October 25, 2016 2:44 PM