2012 YAMAHA EC-03 maintenance

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

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

INSTRUMENT AND CONTROL FUNCTIONS
4-4
2
345
6
7
8
9
TIPWhen the vehicle is in the riding mode,
the beeper sounds. The beeper stops
when either brake lever is squeezed orthe vehicle starts moving.
Control buttons
Button 1 “POWER”
Button 2 “SET”
Button 3 “SELECT”
The following operations and settings
are made using these buttons.
Changing from the standby mode
to the riding mode

Switching between the odometer
and the tripmeter

Resetting the tripmeter

Registering or changing the secu-
rity number

Locking and unlocking the security
lock
Speedometer
The speedometer shows the riding
speed.
Tripmeter “Trip”
The tripmeter shows the distance trav- eled since it was last set to zero. To re-
set the tripmeter, push and hold button
3 “SELECT” for a few seconds until
“0.0” is displayed.
Odometer “Odo”
Push button 3 “SELECT” for at least
one second to switch the display to the
odometer.
The odometer shows the total distance
traveled. Use the odometer as a refer-
ence for the intervals between perform-
ing periodic maintenance.
Push button 3 for at least one second to
switch the display to the tripmeter.
Temperature warning display
“HEAT”/“COOL”
The EC-03 is equipped with a tempera-
ture protection function to protect the
battery and control unit.
If a problem is detected, the tripmeter/
odometer display is canceled and
“COOL” or “HEAT” flash.

When the temperature of the bat-
tery or control unit exceeds a spec-
ified temperature, “HEAT” flashes.

When the temperature of the bat-
tery falls below a specified temper-ature, “COOL” flashes.
TIP
When the temperature of the bat-
tery exceeds a specified tempera-
ture, “HEAT” flashes and the
driving power is reduced to limit
the electric output from the battery,
but this is normal.

When the temperature of the bat-
tery falls below a specified temper-
ature, “COOL” flashes and the
driving power is reduced to limit
the electric output from the battery,
but this is normal.

If the vehicle is ridden for an ex-
tended period in high tempera-
tures, “HEAT” may flash and the
riding speed may be reduced.

If the vehicle is ridden after it has
been left in a hot place or under di-
rect sunlight, “HEAT” may flash
and the riding speed may be re-
duced.

If the vehicle is ridden after it has
been left in an excessively cold
place (less than 0
C), “COOL”
may flash and the riding speed
may be reduced.
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5-1
2
3
456
7
8
9
FOR YOUR SAFETY – PRE-OPERATION CHECKS
EAU15596
Inspect your vehicle each time you use it to make sure the vehicle is in safe operating condition. Always follow the inspection
and maintenance procedures and schedules described in the Owner’s Manual.
WARNING
EWA11151
Failure to inspect or maintain the vehicle properly increases the possibility of an accident or equipment damage.
Do not operate the vehicle if you find any problem. If a problem cannot be corrected by the procedures provided inthis manual, have the vehicle inspected by a Yamaha dealer.
Before using this vehicle, check the following points:
ITEM CHECKS PAGE
Front brake Check operation.
Lubricate cable if necessary.
Check lever free play.
Adjust if necessary. 8-6, 8-8
Rear brake Check operation.
Lubricate cable if necessary.
Check lever free play.
Adjust if necessary. 8-6, 8-8
Control cables Make sure that operation is smooth.
Lubricate if necessary. 8-8
Wheels and tires Check for damage.
Check tire condition and tread depth.
Check air pressure.
Correct if necessary. 8-5, 8-6
Brake levers Make sure that operation is smooth.
Lubricate lever pivoting
points if necessary. 8-9
Centerstand Make sure that operation is smooth.
Lubricate pivot if necessary. 8-9
Chassis fasteners Make sure that all nuts, bolts
and screws are properly tightened.
Tighten if necessary. —
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8-1
1
2
3
4
5
6
78
9
PERIODIC MAINTENANCE AND ADJUSTMENT
EAU50130
Periodic inspection, adjustment, and lu-
brication will keep your vehicle in the
safest and most efficient condition pos-
sible. Safety is an obligation of the vehi-
cle owner/operator. The most important
points of vehicle inspection, adjust-
ment, and lubrication are explained on
the following pages.
The intervals given in the periodic
maintenance charts should be simply
considered as a general guide under
normal riding conditions. However, de-
pending on the weather, terrain, geo-
graphical location, and individual use,
the maintenance intervals may need to
be shortened.
WARNING
EWA10321
Failure to properly maintain the ve-
hicle or performing maintenance ac-
tivities incorrectly may increase
your risk of injury or death during
service or while using the vehicle. If
you are not familiar with vehicle ser-
vice, have a Yamaha dealer performservice.
WARNING
EWA15840
Turn the key to “OFF” when per-
forming maintenance unless other-
wise specified. A running motor has
moving parts that can catch on body
parts or clothing and electrical partsthat can cause shocks or fires.
WARNING
EWA15830
This scooter is designed for use onpaved roads only.
WARNING
EWA15460
Brake discs, calipers, drums, and
linings can become very hot during
use. To avoid possible burns, let
brake components cool beforetouching them.
1CB-9-EA.book 1 ページ ２０１２年４月１１日　水曜日　午前９時３４分

PERIODIC MAINTENANCE AND ADJUSTMENT
8-2
2
3
4
5
6
789
EAU50610
TIP
The annual checks must be performed every year, except if a kilometer-based maintenance is performed in-
stead.

From 30000 km, repeat the maintenance intervals starting from 6000 km.

Items marked with an asterisk should be performed by a Yamaha dealer as they require special tools, data and technicalskills.
EAU50620
General maintenance and lubrication chart NO. ITEM CHECK OR MAINTENANCE JOB ODOMETER READING
ANNUAL
CHECK
1000 km 6000 km 12000 km 18000 km 24000 km
1* Front brake Check operation and adjust
brake lever free play. 
Replace brake shoes. Whenever worn to the limit
2* Rear brake Check operation and adjust
brake lever free play. 
Replace brake shoes. Whenever worn to the limit
3* Wheels Check runout and for damage. 
4* Tires Check tread depth and for
damage.
Replace if necessary.
Check air pressure.
Correct if necessary. 
5* Wheel bearings Check bearing for looseness or
damage. 
6* Steering bearings Check bearing play and steering
for roughness. 
Lubricate with lithium-soap-based grease. Every 24000 km
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PERIODIC MAINTENANCE AND ADJUSTMENT
8-3
1
2
3
4
5
6
78
9
7*Chassis fasteners Make sure that all nuts, bolts
and screws are properly
tightened. 
8 Front brake lever
pivot shaft Lubricate with
lithium-soap-based grease. 
9 Rear brake lever
pivot shaft Lubricate with
lithium-soap-based grease. 
10 Centerstand Check operation.
Lubricate. 
11 * Front fork Check operation and for oil
leakage. 
12 * Shock absorber
assembly Check operation and shock
absorber for oil leakage. 
13 * Front and rear
brake switches Check operation.

14 Moving parts and
cables Lubricate.

15 * Accelerator grip Check operation.
Correct if necessary. 
16 * Lights, signals and
switches Check operation.
Adjust headlight beam.

17 * Motor noise Check for irregular noise coming
from the motor.
Correct if necessary. 
18 * Charging cord and
plug Check condition and for
damage.
Replace if necessary. 
NO. ITEM CHECK OR MAINTENANCE JOB
ODOMETER READING
ANNUAL
CHECK
1000 km 6000 km 12000 km 18000 km 24000 km
1CB-9-EA.book 3 ページ ２０１２年４月１１日　水曜日　午前９時３４分

PERIODIC MAINTENANCE AND ADJUSTMENT
8-4
2
3
4
5
6
789
EAU50143
Checking for irregular motor
sounds Check the motor for irregular sounds.TIPThe motor cannot be revved beyond a
certain motor speed by turning the ac-
celerator grip when the vehicle is on thecenterstand.
EAU50155
Checking the accelerator grip Before checking the accelerator grip,
check the following points.
Make sure that the key is in the
“OFF” position. Turn the accelera-
tor grip slowly and check that it
moves smoothly, and returns
smoothly when released.

Check for any signs of deteriora-
tion or damage around the accel-
erator grip. Also check the
accelerator grip holder mounting
bolts for tightness.

When washing the vehicle, avoid
spraying the area around the ac-
celerator grip with water. If the
area around the accelerator grip is
particularly dirty, use a well-wrung
damp cloth to clean.
WARNING
EWA15672
If a problem is found in accelerator
grip operation, do not operate the
vehicle. Have the vehicle inspected
by a Yamaha dealer. Continuing to
use the vehicle with a problem in-
creases the possibility of an acci-dent or equipment damage.1. Squeeze the rear brake lever with your left hand.
2. Turn the key to “ON”.
3. Cancel the standby mode by pressing one of the control but-
tons. (See page 4-2.)
4. Make sure that the operating sta- tus indicator “RUN” is displayed,
and that the vehicle is in the riding
mode. (See page 7-1 for more in-
formation about “Preparations for
starting off” and “Starting off”.)
5. Check that the accelerator grip and motor operate smoothly when
the vehicle is accelerated by grad-
ually turning the accelerator grip
while riding the vehicle. If there is a
problem, have a Yamaha dealer
check the vehicle.
1CB-9-EA.book 4 ページ ２０１２年４月１１日　水曜日　午前９時３４分