YAMAHA EC-03 2012 Repair Manual

PERIODIC MAINTENANCE AND ADJUSTMENT
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2. Disconnect the headlight coupler,
and then remove the headlight
bulb cover.
3. Unhook the headlight bulb holder, and then remove the burnt-out bulb.
4. Place a new headlight bulb into po- sition, and then secure it with the
bulb holder.
5. Install the bulb cover, and then connect the coupler.
6. Install the headlight unit by install- ing the screws.
7. Have a Yamaha dealer adjust the headlight beam if necessary.
EAU24133
Replacing the ta il/brake light
bulb 1. Remove the tail/brake light lens by
removing the screws.
2. Remove the burnt-out bulb by pushing it in and turning it counter-
clockwise.
1. Screw
1. Headlight coupler
2. Headlight bulb cover
1
1
2
1. Headlight bulb holder
1
1. Tail/brake light lens
2. Screw
1
2
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PERIODIC MAINTENANCE AND ADJUSTMENT
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93. Insert a new bulb into the socket,
push it in, and then turn it clock-
wise until it stops.
4. Install the lens by installing the screws. NOTICE: Do not over-
tighten the screws, otherwise
the lens may break.
[ECA10681]

EAU24204
Replacing a turn signal light
bulb 1. Remove the turn signal light lens
by removing the screw.
2. Remove the burnt-out bulb by pushing it in and turning it counter-
clockwise. 3. Insert a new bulb into the socket,
push it in, and then turn it clock-
wise until it stops.
4. Install the lens by installing the screw. NOTICE: Do not over-
tighten the screw, otherwise the
lens may break.
[ECA11191]

1. Tail/brake light bulb
1
1. Turn signal light lens
2. Screw
1
2
1. Turn signal light bulb
1
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PERIODIC MAINTENANCE AND ADJUSTMENT
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EAU50573
Checking the charging cord
and charging plug 
Check that there is no damage to
the charging cord or charging plug,
and if problem is detected, have a
Yamaha dealer check the vehicle.

Check that there is no dirt or for-
eign material on the charging cord
or charging plug. Wipe off any dirt
with a dry cloth.
WARNING
EWA15791

Do not check or repair the vehi-
cle with the charging plug
plugged in to the outlet. This
could cause an electric shock or short circuit.

Replace the charging cord or
charging plug if damaged. Oth-
erwise, this could cause a fire,electric shock or short circuit.
NOTICE
ECA17102
Make sure that corrosion inhibitors,
solvents or oil do not come in con-
tact with the charging cord or charg-ing plug while checking the vehicle.
1. Tear
1
1. Crack
1. Bend
1
1
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PERIODIC MAINTENANCE AND ADJUSTMENT
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9
EAU50184
Troubleshooting If a problem occurs, check the following
before taking the vehicle to a Yamaha
dealer. However, if no electric power is
supplied (nothing appears in the dis-
play), have a Yamaha dealer check the
vehicle.
The vehicle does not enter the
standby mode when the key is
turned to “ON”
Check the following:1. Is the vehicle currently being charged?
The vehicle does not enter the
standby mode when the key is
turned to “ON” during charging.
2. Was the key turned to “ON” while the accelerator grip was being
opened?
If the key is turned to “ON” while
the accelerator grip is opened, the
vehicle does not enter the standby
mode. Close the accelerator grip,
turn the key to “OFF” and then
back to “ON”.
If the vehicle still fails to enter the stand-
by mode, have a Yamaha dealer check the vehicle.
The vehicle does not start off
Is the vehicle in the riding mode? (Does
the operating status indicator “RUN”
appear in the display?)
The vehicle cannot be ridden unless it
is in the riding mode.
After checking the above, try starting off
again by following the procedures de-
scribed on page 7-1 “Preparations for
starting off” and page 7-3 “Starting off”
to restart the vehicle.
If the vehicle still does not start off, have
a Yamaha dealer check it.
The warning mark “ ” appears
Turn the key to “OFF” and then back to
“ON”. If the warning mark “ ” still ap-
pears, have a Yamaha dealer check
the vehicle.
TIPAlthough the warning mark appears,
the vehicle can still be ridden if the op-
erating status indicator “RUN” appearsand the vehicle is in the riding mode.
A light does not come on
Check the following:
1. Is the vehicle currently being charged? Lights do not come on if
the vehicle is being charged.
2. Is the key turned to “ON”? (Does anything appear in the display?)
If nothing appears in the display,
the auto-off function may be acti-
vated. Turn the key to “OFF” and
then back to “ON”.
3. Are all switches working properly?
After checking the above, and a light
does still not come on, proceed with the
following.

If the headlight fails to come on,
the bulb may be burned out. Refer
to page 8-11 for replacement pro-
cedures.

If a tail/brake light or turn signal
light fails to come on, a bulb may
be burned out. Refer to page 8-12
or 8-13 for replacement proce-
dures.
If a light still does not come on, a fuse
may be blown. Have a Yamaha dealer
check the vehicle.
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PERIODIC MAINTENANCE AND ADJUSTMENT
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NOTICE
ECA11982
Do not use a bulb of a wattage other
than specified to avoid causing ex-
tensive damage to the electrical sys-tem and possibly a fire.
The motor stops while riding
Check the following:1. Is the battery sufficiently charged? Check the battery level indicator. If
the remaining charge is insuffi-
cient, charge the battery before
continuing to ride.
2. Is “HEAT” flashing and did “RUN” go off?
The temperature protection func- tion has been activated. Turn the
key to “OFF”, and allow the vehicle
to cool down before continuing to
ride.
After checking the above, if the motor
still does not run, have a Yamaha deal-
er check the vehicle.
WARNING
EWA15631
Before pushing or moving the
EC-03, be sure to turn the key to
“OFF”. The vehicle may suddenly
start to move if the accelerator grip
is turned while the key is turned to“ON”.
The display and headlight go off
when the key is turned to “ON”
Check the following: 1. Has the vehicle been stopped for more than five minutes?
To protect the battery, the EC-03 is
equipped with an auto-off function.
If the vehicle has been stopped for
more than five minutes, the power
is cut to save the battery charge.
2. Is the battery sufficiently charged? If the remaining charge is insuffi- cient, charge the battery before
continuing to ride.
After checking the above, turn the key
to “ON” again. If the display and head-
light do not come on, have a Yamaha
dealer check the vehicle.
WARNING
EWA15631
Before pushing or moving the
EC-03, be sure to turn the key to
“OFF”. The vehicle may suddenly
start to move if the accelerator grip
is turned while the key is turned to“ON”.
The security lock cannot be un-
locked
If an incorrect security number is en-
tered three times in succession, the se-
curity lock cannot be unlocked even if
the correct security number is entered
after that.
Turn the key to “OFF” and then back to
“ON”, then try entering the correct se-
curity number again.
1. Temperature indicator “HEAT”
1
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PERIODIC MAINTENANCE AND ADJUSTMENT
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9The warning light comes on, and
“CHG” and the warning mark “ ”
flash during charging
If a problem occurs during charging, the
charging automatically stops. The
warning light comes on and both “CHG”
and the warning mark “ ” flash.
TIPIf this continues for five minutes, the
warning light goes off, along with all in-dicators in the display.
Unplug the charging plug from the out-
let to stop charging, and then start
charging again after waiting a few min- utes. If charging automatically stops
again, there may be a malfunction with
the vehicle. Stop charging and have a
Yamaha dealer check the vehicle.
When the key is turned to “ON”, the
warning light comes on and both
“CHG” and the warning mark “ ”
flash in the display
The battery is not charged properly.
Turn the key “OFF” and then back to
“ON” in order to reset charging. Turn
the key to “OFF” and then charge the
battery again.
After charging, if the above still occurs,there may be a malfunction with the ve-
hicle. Have a Yamaha dealer check the
vehicle.
“– – – – –” flashes in the display
during charging
If the battery voltage is below the spec-
ified level, the display shows this indi-
cator. Continue charging.
If the warning light comes on and both
“CHG” and “ ” flash in the display af-
ter charging for one hour, there may be
a malfunction with the vehicle. Have a
Yamaha dealer check the vehicle.1. Warning light
2. Battery condition indicator “CHG”
3. Warning mark “ ”
3
2
1
1. Warning light
2. Battery condition indicator “CHG”
3. Warning mark “ ”
3
2
1
1. Charging error indicator “– – – – –”
1
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PERIODIC MAINTENANCE AND ADJUSTMENT
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“HEAT” flashes in the display dur-
ing charging
This is not a malfunction. The charging process is in the standby
mode because the battery temperature
is higher than 50
C. Allow the battery
to cool down.
When the battery temperature falls to
the specified temperature, “HEAT”
goes off and charging starts automati-
cally. (See page 6-1 for more informa-
tion about “Battery charging place”.)
“COOL” flashes in the display dur-
ing charging
This is not a malfunction.
The charging process is in the standby
mode because the battery temperature
is lower than –5  C.
If this occurs, start recharging in a warm place.
When the battery temperature reaches
the specified temperature, “COOL”
goes off and charging starts automati-
cally. (See page 6-1 for more informa-
tion about “Battery charging place”.)
When the key is turned to “ON”, the
beeper sounds and the following
occurs

The warning light flashes

The warning mark “ ” comes on

The battery level indicator seg-
ments move from side to side

“PUSH” indicator and “OLD” indi-
cator alternately appear
1. Warning light
2. Battery condition indicator “CHG”
3. Warning mark “ ”
1. Temperature indicator “HEAT”
3
2
1
1
1. Temperature indicator “COOL”
1
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PERIODIC MAINTENANCE AND ADJUSTMENT
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9The battery is near the end of its ser-
vice life.
Push one of the control buttons (See
page 4-2.) to cancel the beeper. This
switches the vehicle to the standby
mode. Cancel the standby mode by pushing a
control button again.
Although the vehicle can still be ridden
if the operating status indicator “RUN”
appears, the battery is near the end of
its service life. Consult a Yamaha deal-
er as soon as possible to order a re-
placement battery.
TIPIf a control button is pushed, the beeper
stops and the display changes to the
standby mode. If no control button is
pushed within five minutes, the auto-off
function is activated, and all power iscut to protect the battery.When charging is started, the beep-
er sounds, and the following indi-
cates the battery is at the end of its
service life

The warning light flashes

The warning mark “ ” comes on

The “PUSH” indicator and “OLD”
indicator alternately appear in the
display
The battery has reached the end of its
service life.
Have a Yamaha dealer replace the bat-
tery. Push one of the control buttons
(See page 4-2.) to cancel the beeper.
This display switches to the following
1. Battery level indicator
2. Warning light
3. Battery condition indicator “PUSH”/“OLD”
4. Warning mark “ ”
2
4
3
1
1. Warning light
2. Battery condition indicator “PUSH”/“OLD”
3. Warning mark “ ”
1
3
2
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PERIODIC MAINTENANCE AND ADJUSTMENT
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indicating the battery has reached the
end of its service life.
Unplug the charging plug, and all indi-
cators in the display go off.
TIP
The beeper continues to sound
and “End” is displayed to indicate
the end of the battery service life
until one of the buttons are
pushed.

To protect the battery, the EC-03 is
equipped with an auto-off function.
After five minutes have passed,
the power goes off, the beeperstops and the display goes off. The battery cannot be charged (the
battery level indicator remains low
after charging)
Is the charging plug properly plugged
into an outlet?
After checking, charge the battery
again by the procedures described in
“Charging procedure” on page 6-3.
If the battery still cannot be charged af-
ter checking the above, there could be
a malfunction in the battery charger.
Have a Yamaha dealer check the vehi-
cle.
Unusual odor or smoke emerges
from the battery charger
Unplug the charging plug from the out-
let immediately. Have a Yamaha dealer
check the vehicle.
The riding distance of a single
charge has become significantly
shorter
The battery has reached the end of its
service life.
Have a Yamaha dealer replace the bat-
tery.
The battery cannot be charged be-
cause the residual-current device
(RCD) protection has been activat-
ed
Stop charging and have a Yamaha
dealer check the vehicle.
1. Warning light
2. End of battery service life indicator “End”
1
2
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SCOOTER CARE AND STORAGE
EAU37833
Matte color caution NOTICE
ECA15192
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.
EAU50832
Care While the open design of a scooter re-
veals the attractiveness of the technol-
ogy, it also makes it more vulnerable.
Rust and corrosion can develop even if
high-quality components are used. Fre-
quent and proper care does not only
comply with the terms of the warranty,
but it will also keep your scooter looking
good, extend its life and optimize its
performance.
Before cleaning1. Make sure that the seat is properly closed before cleaning.
2. Make sure that all caps and covers as well as all electrical couplers
and connectors, are tightly in-
stalled.
3. Remove extremely stubborn dirt, with a degreasing agent and a
brush, but never apply such prod-
ucts onto seals, gaskets and wheel
axles. Always rinse the dirt and de-
greaser off with water. Cleaning
WARNING
EWA15810

Do not wash the vehicle while
charging the battery. This could
cause a fire or electric shock.

Make sure that the seat is prop-
erly closed before washing. If
the seat is not properly closed,
water could splash on the bat-
tery or built-in charger. This
could cause an electric shock or
short circuit.

Do not wash the charging cord
and charging plug. Wipe cleanwith a dry rag.
NOTICE
ECA17122

Avoid using strong acidic wheel
cleaners, especially on spoked
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-
structed. Also, thoroughly rinse
the area off with water, immedi-
ately dry it, and then apply a cor-
1CB-9-EA.book 1 ページ ２０１２年４月１１日　水曜日　午前９時３４分