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Periodic maintenance and adjustment
6-30
6
EAU74670
Replacing the fuses
The fuse box is located under the seat.
(See page 3-15.)
MWS125-CMWS125-A
If a fuse is blown, replace it as follows.
1. Turn the key to “OFF” and turn off
the electrical circuit in question.
2. Open the seat. (See page 3-15.)
3. Remove the fuse box cover as
shown.
4. Remove the blown fuse, and then
install a new fuse of the specified
amperage. WARNING! Do not
use a fuse of a higher amperage
rating than recommended to
avoid causing extensive dam-
age to the electrical system and
possibly a fire.
[EWA15132]
1. Fuse box
2. ABS motor fuse (for ABS models)
1. Main fuse 2
2. Main fuse
3. Signaling system fuse
4. Terminal fuse 1 (for auxiliary DC jack)
5. Spare fuse
2
1
51
234
1. Main fuse 2
2. ABS solenoid fuse
3. Main fuse
4. ABS control unit fuse
5. Signaling system fuse
6. Terminal fuse 1 (for auxiliary DC jack)
7. Spare fuse
1. Fuse box cover
71
23456
1
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Periodic maintenance and adjustment
6-31
65. Turn the key to “ON” and turn on
the electrical circuit in question to
check if the device operates.
6. If the fuse immediately blows
again, have a Yamaha dealer
check the electrical system.
7. Install the fuse box cover, and
then close the seat.
EAU62850
Headlight
This model is equipped with an LED-
type headlight.
If a headlight does not come on, have
a Yamaha dealer check its electrical
circuit.
NOTICE
ECA16581
Do not affix any type of tinted film or
stickers to the headlight lens.
Specified fuses:
Main fuse:
15.0 A
Main fuse 2:
7.5 A
Te r m i n a l f u s e 1 :
2.0 A
Signaling system fuse:
7.5 A
ABS motor fuse:
30.0 A (MWS125-A)
ABS solenoid fuse:
30.0 A (MWS125-A)
ABS control unit fuse:
7.5 A (MWS125-A)
UBR7E0E0.book Page 31 Tuesday, October 25, 2016 2:44 PM
Page 75 of 92
Periodic maintenance and adjustment
6-32
6
EAU54502
Auxiliary lights
This model is equipped with LED-type
auxiliary lights.
If an auxiliary light does not come on,
have a Yamaha dealer check it.
EAU70540
Brake/tail light
This model is equipped with an LED-
type brake/tail light.
If the brake/tail light does not come on,
have a Yamaha dealer check it.
1. Auxiliary light
11
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Page 76 of 92
Periodic maintenance and adjustment
6-33
6
EAU61170
Turn signal light bulb
If a turn signal light does not come on,
have a Yamaha dealer check its electri-
cal circuit or replace the bulb.
EAUM3510
Replacing the license plate
light bulb
1. Remove the license plate light unit
by removing the screw.
2. Remove the license plate light
bulb socket (together with the
bulb) by pulling it out.
3. Remove the burnt-out bulb by
pulling it out.
4. Insert a new bulb into the socket.
5. Install the socket (together with
the bulb) by pushing it in.
6. Install the license plate light unit by
installing the screw.
1. License plate light unit
2. Screw
1. License plate light bulb socket
1
2
1
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Page 77 of 92
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.
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Periodic maintenance and adjustment
6-35
6
EAU68020
Troubleshooting charts
Starting problems or poor engine performance
1. FuelThere is enough fuel.
There is no fuel.
Check the battery.
Supply fuel.
The engine turns over
quickly.
The engine turns over
slowly.
Operate the electric
starter.
The engine does not
start.
Check the battery.
Wipe off with a dry
cloth and correct the
spark plug gap, or
replace the spark
plug.
Check the battery
lead connections,
and have a Yamaha
dealer charge the
battery if necessary.
2. BatteryThe battery is good.
The engine does not
start.
Check the ignition.
3. IgnitionWet
Dry
There is compression.
There is no
compression.
The engine does not start.
Have a Yamaha dealer check the vehicle.
Have a Yamaha dealer check the vehicle.
The engine does not
start.
Check the
compression.Have a Yamaha
dealer check the
vehicle.
Remove the spark
plug and check
the electrodes.
Operate the electric
starter.
Operate the electric
starter.
Check the fuel level
in the fuel tank.
4. Compression
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Periodic maintenance and adjustment
6-36
6 Engine overheating
WARNING
EWAT1041
zDo not remove the radiator cap when the engine and radiator are hot.
Scalding hot fluid and steam may be blown out under pressure, which
could cause serious injury. Be sure to wait until the engine has cooled.
zPlace a thick rag, like a towel, over the radiator cap, and then slowly ro-
tate the cap counterclockwise to the detent to allow any residual pres-
sure to escape. When the hissing sound has stopped, press down on the
cap while turning it counterclockwise, and then remove the cap.
TIP
If coolant is not available, tap water can be temporarily used instead, provided
that it is changed to the recommended coolant as soon as possible.
Wait until the engine
has cooled.
Check the coolant
level in the reservoir
and radiator.Add coolant.
(See TIP.)
The coolant level is
OK.
There is no leakage.
There is leakage.
The coolant level is
low.
Check the cooling
system for leakage.
Have a Yamaha
dealer check and
repair the cooling
system.
Start the engine. If the engine overheats again,
have a Yamaha dealer check and repair the cooling
system.
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Page 80 of 92
Vehicle care and storage
7-1
7
EAU37834
Matte color caution
NOTICE
ECA15193
Some models are equipped with
matte colored finished parts. Be
sure to consult a Yamaha dealer for
advice on what products to use be-
fore cleaning the vehicle. Using a
brush, harsh chemical products or
cleaning compounds when cleaning
these parts will scratch or damage
their surface. Wax also should not
be applied to any matte colored fin-
ished parts.
EAUU1740
Care
While the open design of this vehicle
reveals the attractiveness of the tech-
nology, it also makes it more vulnera-
ble. Rust and corrosion can develop
even if high-quality components are
used. A rusty exhaust pipe may go un-
noticed on a car, however, it detracts
from the overall appearance of this ve-
hicle. Frequent and proper care does
not only comply with the terms of the
warranty, but it will also keep your ve-
hicle looking good, extend its life and
optimize its performance.
Before cleaning
1. Cover the muffler outlet with a
plastic bag after the engine has
cooled down.
2. Make sure that all caps and cov-
ers as well as all electrical cou-
plers and connectors, including
the spark plug cap, are tightly in-
stalled.
3. Remove extremely stubborn dirt,
like oil burnt onto the crankcase,
with a degreasing agent and a
brush, but never apply such prod-
ucts onto seals, gaskets and
wheel axles. Always rinse the dirt
and degreaser off with water.
Cleaning
NOTICE
ECA20970
zAvoid using strong acidic wheel
cleaners, especially on spoke
wheels. If such products are
used on hard-to-remove dirt, do
not leave the cleaner on the af-
fected area any longer than in-
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