Introduction
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Welcome to the Yamaha world of motorcycling!
As the owner of the HW125, you are benefiting from Yamaha’s vast experience and newest technology regarding the design
and manufacture of high-quality products, whic h have earned Yamaha a reputation for dependability.
Please take the time to read this manual thoroughly, so as to enjoy all advantages of your HW125. The Owner’s Manual does
not only instruct you in how to operate, inspect and maintain your scooter, but also in how to safeguard yourself and others
from trouble and injury.
In addition, the many tips given in this manual will help keep your scooter in the best possibl e condition. If you have any fur-
ther questions, do not hesitate to contact your Yamaha dealer.
The Yamaha team wishes you many safe and pleasant rides. So, remember to put safety first!
Yamaha continually seeks advancements in pr oduct design and quality. Therefore, while this manual contains the most cur-
rent product information available at the time of printing, there may be minor discrepancies between your scooter and this
manual. If there is any question concerning this manual, please consult a Yamaha dealer.
WARNING
EWA12412
Please read this manual carefully and completely before operating this scooter.
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Important manual information
EAU10134
Particularly important information is distinguished in this manual by the following notations:
*Product and specifications are subject to change without notice.
This is the safety alert symbol. It is used to alert you to potential personal injury
hazards. Obey all safety messages that follow this symbol to avoid possible injury
or death.
A WARNING indicates a hazardous situation wh
ich, if not avoided, could result in
death or serious injury.
A NOTICE indicates special precautions that must be taken to avoid damage to the
vehicle or other property.
A TIP provides key information to make procedures easier or clearer.
WARNING
NOTICETIP
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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 instrument s................. 2-3
Instrument and co ntrol functions.... 3-1
Main switch/steering lock................. 3-1
Indicator lights and warning lights ... 3-2
Multi-function display ....................... 3-3
Handlebar switches ......................... 3-7
Front brake lever ............................. 3-7
Rear brake lever .............................. 3-8
Fuel tank cap ................................... 3-8
Fuel.................................................. 3-9
Catalytic converter ......................... 3-10
Seat ............................................... 3-11
Passenger footrest ........................ 3-11
Storage compartments .................. 3-12
Shock absorber assembly ............. 3-13
Carrier............................................ 3-14
Luggage holder.............................. 3-14
For your safety – pre-operation
checks ................................................ 4-1
Operation and im portant riding
points ................................................. 5-1
Starting the engine .......................... 5-1 Starting off ....................................... 5-2
Acceleration and deceleration ......... 5-2
Braking ............................................ 5-3
Tips for reducing fuel
consumption ................................ 5-3
Engine break-in ............................... 5-3
Parking ............................................ 5-4
Periodic maintenance and
adjustment ........................................ 6-1
Owner’s tool kit................................ 6-2
Periodic maintenance chart for the emission control system .............. 6-4
General maintenance and lubrication
chart ............................................. 6-5
Removing and installing the cowling and panels ............................. ...... 6-8
Checking the spark plug................ 6-10
Engine oil and oil strainer .............. 6-11
Final transmission oil..................... 6-13
Coolant .......................................... 6-14
Air filter and V-belt case air filter elements .................................... 6-16
Checking the engine idling speed ......................................... 6-17
Checking the throttle grip free play ............................................ 6-17
Valve clearance............................. 6-18
Tires .............................................. 6-18
Cast wheels................................... 6-20 Checking the front brake lever free
play ............................................. 6-20
Adjusting the rear brake lever free play ............................................. 6-20
Checking the front brake pads and
rear brake shoes ....................... 6-21
Checking the brake fluid level ........ 6-22
Changing the brake fluid ............... 6-23
Checking and lubricating the cables ......................................... 6-23
Checking and lubricating the throttle
grip and cable ............................. 6-24
Lubricating the front and rear brake levers .......................................... 6-24
Checking and lubricating the centerstand................................. 6-24
Checking the front fork................... 6-25
Checking the steering .................... 6-26
Checking the wheel bearings......... 6-26
Battery ........................................... 6-26
Replacing the fuses ....................... 6-28
Replacing the headlight bulb ......... 6-28
Replacing an auxiliary light bulb .... 6-29
Tail/brake light ............................... 6-30
Replacing a front turn signal light
bulb............................................. 6-30
Replacing a rear turn signal light bulb............................................. 6-31
License plate light .......................... 6-32
Troubleshooting ........... .................. 6-32
Troubleshooting charts .................. 6-33U53BE1E0 1 ページ 2015年9月15日 火曜日 午後1時48分
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Safety information
EAU1026B
Be a Responsible Owner
As the vehicle’s owner, you are respon-
sible for the safe and proper operation
of your scooter.
Scooters are single-track vehicles.
Their safe use and operation are de-
pendent upon the use of proper riding
techniques as well as the expertise of
the operator. Every operator should
know the following requirements before
riding this scooter.
He or she should:
Obtain thorough instructions from
a competent source on all aspects
of scooter operation.
Observe the warnings and mainte-
nance requirements in this Own-
er’s Manual.
Obtain qualified training in safe
and proper riding techniques.
Obtain professional technical ser-
vice as indicated in this Owner’s
Manual and/or when made neces-
sary by mechanical conditions.
Never operate a scooter without
proper training or instruction. Take
a training course. Beginners should receive training from a cer-
tified instructor. Contact an autho-
rized scooter dealer to find out
about the training courses nearest
you.
Safe Riding
Perform the pre-operation checks each
time you use the vehicle to make sure it
is in safe operating condition. Failure to
inspect or maintain the vehicle properly
increases the possibility of an accident
or equipment damage. See page 4-1
for a list of pre-operation checks.
This scooter is designed to carry
the operator and a passenger.
The failure of motorists to detect
and recognize scooters in traffic is
the predominating cause of auto-
mobile/scooter accidents. Many
accidents have been caused by an
automobile driver who did not see
the scooter. Making yourself con-
spicuous appears to be very effec-
tive in reducing the chance of this
type of accident.
Therefore:
Wear a brightly colored jacket.
Use extra caution when you are approaching and passing
through intersections, since in-
tersections are the most likely
places for scooter accidents to
occur.
Ride where other motorists can see you. Avoid riding in another
motorist’s blind spot.
Never maintain a scooter with- out proper knowledge. Contact
an authorized scooter dealer to
inform you on basic scooter
maintenance. Certain mainte-
nance can only be carried out by
certified staff.
Many accidents involve inexperi-
enced operators. In fact, many op-
erators who have been involved in
accidents do not even have a cur-
rent driver’s license.
Make sure that you are qualifiedand that you only lend your
scooter to other qualified opera-
tors.
Know your skills and limits. Staying within your limits may
help you to avoid an accident.
We recommend that you prac- tice riding your scooter where
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Instrument and control functions
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Main switch/steering lockThe main switch/steering lock controls
the ignition and lighting systems, and is
used to lock the steering. The various
positions are described below.
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ON
All electrical circui ts are supplied with
power, the meter lighting, taillight, li-
cense plate light and auxiliary lights
come on, and the engine can be start-
ed. The key cannot be removed.TIPThe headlights come on automatically
when the engine is started and stay on
until the key is turned to “OFF”, even if
the engine stalls.
EAU10662
OFF
All electrical systems are off. The key
can be removed.
WARNING
EWA10062
Never turn the key to “OFF” or
“LOCK” while the vehicle is moving.
Otherwise the electrical systems will
be switched off, which may result inloss of control or an accident.
EAU10687
LOCK
The steering is lock ed and all electrical
systems are off. The key can be re-
moved. To lock the steering
1. Turn the handlebars all the way to
the left.
2. With the key in the “OFF” position, push the key in and turn it to
“LOCK”.
3. Remove the key.TIPIf the steering will not lock, try turningthe handlebars back to the right slightly.
ON
OFFLOCK
1. Push.
2. Turn.
1
2
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Instrument and control functions
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To unlock the steering
1. Insert the key.
2. With the key in the “LOCK” posi-
tion, push the key in and turn it to
“OFF”.
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Indicator lights and warning
lights
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Turn signal indicator lights “ ” and
“”
Each indicator light will flash when its
corresponding turn signal lights are
flashing.
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High beam indicator light “ ”
This indicator light comes on when the
high beam of the headlight is switched
on.
EAU11447
Coolant temperature warning light
“”
This warning light comes on if the en-
gine overheats. If this occurs, stop the
engine immediately and allow the en-
gine to cool.
The electrical circuit of the warning light
can be checked by turning the key to
“ON”. The warning light should come
on for a few seconds, and then go off.
If the warning light does not come on
initially when the key is turned to “ON”,
or if the warning light remains on, have
a Yamaha dealer check the electrical
circuit.NOTICE
ECA10022
Do not continue to operate the en-gine if it is overheating.TIP
For radiator-fan-equipped vehi-
cles, the radiator fan(s) automati-
cally switch on or off according to
the coolant temperature in the ra-
diator.
If the engine overheats, see page
1. Turn.
2. Release.
2
1
1. Turn signal indicator lights “ ” and “ ”
2. Coolant temperature warning light “ ”
3. High beam indicator light “ ”
4. Engine trouble warning light “ ”
SELECT
RESET
ODOOIL TRI P 1 BE LT TRI P 2
OIL CHANGECLOOK
OUT TEM P
3
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11
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Instrument and control functions
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6-34 for further instructions.
EAUT1936
Engine trouble warning light “ ”
This warning light flashes or stays on if
an electrical circuit monitoring the en-
gine is not working correctly. If this oc-
curs, have a Yamaha dealer check the
self-diagnosis system.
The electrical circuit of the warning light
can be checked by turning the key to
“ON”. The warning light should come
on for a few seconds, and then go off.
If the warning light does not come on
initially when the key is turned to “ON”,
or if the warning light remains on, have
a Yamaha dealer check the electrical
circuit.
EAUT3725
Multi-function display
WARNING
EWA12313
Be sure to stop the vehicle before
making any setting changes to the
multi-function display. Changing
settings while riding can distract the
operator and increase the risk of anaccident.
The multi-function display is equipped
with the following:
an odometer
a fuel reserve tripmeter (which
shows the distance traveled since
the bottom segment of the fuel me-
ter and fuel level warning indicator
1. V-belt replacement indicator “V-BELT”
2. Clock
3. Oil change indicator “OIL CHANGE”
4. “SELECT” button
5. Fuel level warning indicator “ ”
6. Fuel meter
7. Speedometer
8. Odometer
9. “RESET” button
10.Tripmeter 1
11.Ambient temperature display
12.Tripmeter 2
SELECT
RESET
ODOOIL
TRI P 1 BE LT TRI P
2
OIL CHANGECLOOK
OUT TEM P
12
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78 9
10 12
11
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Instrument and control functions
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started flashing)
two tripmeters (which show the
distance traveled since they were
last set to zero)
an oil change tripmeter (which
shows the distance traveled since
the last engine oil change)
an oil change indicator (which dis-
plays when the engine oil should
be changed)
a V-belt replacement tripmeter
(which shows the distance trav-
eled since the V-belt was last re-
placed)
a V-belt replacement indicator
an ambient temperature display
a clock
a fuel meter
a brightness control mode
TIP
When the key is turned to “ON”, all
segments of the display come on
for a few seconds. During this
time, the multi-function display is
performing a self-test.
Be sure to turn the key to “ON” be-
fore using the “SELECT” and “RE-
SET” buttons except when setting
the brightness mode.
Odometer, fuel tripmeter, tripme-
ters, oil change tripmeter and V-belt
tripmeter modes
Pushing the “SELECT” button switches
the display among the odometer mode
“ODO”, the fuel tripmeter mode “F”, the
tripmeter modes “TRIP 1” and “TRIP 2”,
the oil change tripmeter mode “OIL
TRIP” and the V-belt change mode
“BELT TRIP” in the following order:
ODO F TRIP 1 TRIP 2 OIL
TRIP BELT TRIP ODO
When approximately 1.6 L (0.42 US
gal, 0.35 Imp.gal) of fuel remains in the
fuel tank, the bottom segment of the
fuel meter and fuel level warning indica-
tor will start flashing, and the display will
automatically change to the fuel re-
serve tripmeter mode " F" and start
counting the distance traveled from that
point. In that case, pushing the "RE-
SET" button switches the display to the
previous mode.
To reset a tripmeter, select it by push-
ing the “SELECT” button until “Trip” or
“Trip F” begins flashing (“Trip” or “Trip F” will only flash for five seconds).
While “Trip” or “Trip F” is flashing, push
the “RESET” button for at least one
second. If you do not reset the fuel re-
serve tripmeter manually, it will reset it-
self automatically and the display will
return to the prior mode after refueling
and traveling 5 km (3 mi).
TIPThe display cannot be changed back to
fuel reserve tripmeter “F” after pushingthe “RESET” button.
OdometerTIP
For the U.K.: For any mode, the
odometer units can be switched
from kilometers to miles by push-
ing the “SELECT” button for 1 sec-
ond.
If the odometer indicates “-----”,
have a Yamaha dealer check the
multi-function display, as it may befaulty.
Tripmeters
To reset a tripmeter, select it by push-
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