Page 1 of 78
q Read this manual carefully before o\ferating this v\oehicle.
\bWNER’S MANUAL
EC-03
1CB-28199-EA
U1CBEA_Hyoshi.indd 12012/05/15 14:36:23
Page 2 of 78
Q Read this manual carefully before o\ferating this vehicle. This manual should stay with this vehicle if it is sold.
EAU46090
U1CBEA_Hyoshi.indd 22012/05/15 14:36:23
Page 3 of 78

INTRODUCTION
EAU10113
Welcome to the Yamaha world of motorcycling!
As the owner of the EC-03, you are benefiting from Yamaha’s vast experience and newest technology regarding the design
and manufacture of high-quality products, which have earned Yamaha a reputation for dependability.
Please take the time to read this manual thoroughly, so as to enjoy all advantages of your EC-03. 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 possible 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 product 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
EWA12411
Please read this manual carefully and completely before operating this scooter.1CB-9-EA.book 1 ページ 2012年4月11日 水曜日 午前9時34分
Page 4 of 78
IMPORTANT MANUAL INFORMATION
EAU10133
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
1CB-9-EA.book 1 ページ 2012年4月11日 水曜日 午前9時34分
Page 5 of 78
IMPORTANT MANUAL INFORMATION
EAU10200
EC-03
OWNER’S MANUAL
©2012 by Yamaha Motor Co., Ltd. 1st edition, April 2012All rights reserved.
Any reprinting or unauthorized use without the written permission of Yamaha Motor Co., Ltd.
is expressly prohibited. Printed in Japan.
1CB-9-EA.book 2 ページ 2012年4月11日 水曜日 午前9時34分
Page 6 of 78

TABLE OF CONTENTSSAFETY INFORMATION .................. 1-1
Further safe-riding points ................ 1-5
Charging the battery sa fely ............. 1-5
DESCRIPTION .................................. 2-1
Left view .......................................... 2-1
Right view ........................................ 2-2
Controls and instrument s................. 2-3
EC-03 FEATURES ............................. 3-1
Features ......................................... 3-1
Traveling distance .......................... 3-1
Effective use of the battery ............. 3-2
Battery level .................................... 3-3
INSTRUMENT AND CONTROL
FUNCTIONS ....................................... 4-1
Beeper ............................................ 4-1
Main switch/steering lock ................ 4-1
Multi-function display ...................... 4-2
Using the security lock .................... 4-7
Handlebar switches ...................... 4-11
Front brake lever .......................... 4-11
Rear brake lever ........................... 4-11
Seat .............................................. 4-12
Helmet holder ............................... 4-12
Luggage hook ............................... 4-13
Grab bar ....................................... 4-13
FOR YOUR SAFETY –
PRE-OPERATION CHECKS .............. 5-1CHARGING THE BATTERY
.............. 6-1
Battery charging locati on ................ 6-1
Charging procedure ....................... 6-3
Charging time ................................. 6-8
Display of charging progress status .......................................... 6-9
About the battery ............................ 6-9
OPERATION AND IMPORTANT
RIDING POINTS ................................. 7-1
Preparations for starting off ............ 7-1
Starting off ...................................... 7-3
Acceleration and deceleration ........ 7-4
Braking ........................................... 7-5
Parking ........................................... 7-5
PERIODIC MAINTENANCE AND
ADJUSTMENT ................................... 8-1
General maintenance and lubrication chart .......................... 8-2
Checking for irregular motor sounds ........................................ 8-4
Checking the accelerato r grip ........ 8-4
Tires ............................................... 8-5
Cast wheels .................................... 8-6
Adjusting the front and rear brake lever free play ............................. 8-6
Checking the front and rear brake
shoes .......................................... 8-8
Checking and lubricating the cables ......................................... 8-8 Lubricating the front and rear
brake levers ................................. 8-9
Checking and lubricating the centerstand .................................. 8-9
Checking the front fork .................. 8-10
Checking the steering ................... 8-10
Checking the wheel bearings ........ 8-11
Replacing the headlight bulb ........ 8-11
Replacing the tail/brake light bulb ............................................ 8-12
Replacing a turn signal light
bulb ............................................ 8-13
Checking the charging cord and charging plug ............................. 8-14
Troubleshooting .......... .................. 8-15
SCOOTER CARE AND STORAGE .... 9-1
Matte color caution ......................... 9-1
Care ................................................ 9-1
Storage ........................................... 9-3
SPECIFICATIONS ........................... 10-1
CONSUMER INFORMATION ........... 11-1
Identification numbers .. ................. 11-11CB-9-EA.book 1 ページ 2012年4月11日 水曜日 午前9時34分
Page 7 of 78

1-1
1
SAFETY INFORMATION
EAU50655
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. Takea 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 5-1
for a list of pre-operation checks.
This scooter is designed to carry
the operator only. No passengers.
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-
1CB-9-EA.book 1 ページ 2012年4月11日 水曜日 午前9時34分
Page 8 of 78

1-2
SAFETY INFORMATION
1tice riding your scooter where
there is no traffic until you have
become thoroughly familiar with
the scooter and all of its con-
trols.
Many accidents have been caused
by error of the scooter operator. A
typical error made by the operator
is veering wide on a turn due to ex-
cessive speed or undercornering
(insufficient lean angle for the
speed).
Always obey the speed limit and
never travel faster than warrant-
ed by road and traffic conditions.
Always signal before turning or changing lanes. Make sure that
other motorists can see you.
The posture of the operator is im-
portant for proper control. The op-
erator should keep both hands on
the handlebar and both feet on the
operator footrests during operation
to maintain control of the scooter.
Do not place magnets or objects
with a strong magnetic force near
the accelerator grip. In addition, do
not place objects susceptible to
magnetic forces (i.e., credit cards, watches, etc.) close to the acceler-
ator grip.
Never ride under the influence of
alcohol or other drugs.
This scooter is designed for
on-road use only. It is not suitable
for off-road use.
Avoid submerged roads
Do not ride on flooded roads. Water
could cause power unit failure, electric
leakage, and/or short-circuiting.
Protective Apparel
The majority of fatalities from scooter
accidents are the result of head inju-
ries. The use of a safety helmet is the
single most critical factor in the preven-
tion or reduction of head injuries.
Always wear an approved helmet.
Wear a face shield or goggles.
Wind in your unprotected eyes
could contribute to an impairment
of vision that could delay seeing a
hazard.
The use of a jacket, substantial
shoes, trousers, gloves, etc., is ef-
fective in preventing or reducing
abrasions or lacerations.
Never wear loose-fitting clothes,
otherwise they could catch on the
control levers or wheels and cause
injury or an accident.
Always wear protective clothing
that covers your legs, ankles, and
feet. The power unit become hot
during or after operation and can
cause burns.
Loading
Adding accessories or cargo to your
scooter can adversely affect stability
and handling if the weight distribution of
the scooter is changed. To avoid the
possibility of an accident, use extreme
caution when adding cargo or accesso-
ries to your scooter. Use extra care
when riding a scooter that has added
cargo or accessories. Here, along with
the information about accessories be-
low, are some general guidelines to fol-
low if loading cargo to your scooter:
The total weight of the operator, acces-
sories and cargo must not exceed the
maximum load limit. Operation of an
overloaded vehicle could cause an
accident.
1CB-9-EA.book 2 ページ 2012年4月11日 水曜日 午前9時34分