brake YAMAHA EC-03 2012 User Guide

OPERATION AND IMPORTANT RIDING POINTS
7-3
2
3
4
5
678
9
TIPWhen the vehicle enters the riding
mode, the beeper sounds. The beeper
stops sounding when either brake lever
is squeezed or the vehicle starts mov-ing.
If the entered security number is
incorrect, the buzzer sounds, “NG”
flashes for a few seconds, and the
vehicle returns to the standby
mode.
If this occurs, repeat the procedure
from the step 6.TIPIf 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.
Repeat the procedure after first turning
the key to “OFF” and then back to “ON”
again.
8. Check the battery level indicator to make sure that the remaining
charged level is sufficient. (See
page 3-3 for more information
about the charge level.)
EAU53940
Starting off 1. Check that the operating status in-dicator “RUN” is displayed, and
that the vehicle is in the riding
mode.
2. Switch the turn signal on.
1. Incorrect number indicator “NG”
1
1. Battery level indicator
1
1. Operating status indicator “RUN”
1
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OPERATION AND IMPORTANT RIDING POINTS
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8
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TIPThe beeper sounds while the turn sig-nal switch is signaling.3. Check in front of and behind the vehicle to make sure that it is safe
to start off.
4. Release the rear brake lever.
5. Check for oncoming traffic, and then slowly turn the accelerator
grip in order to start off.
6. Push the turn signal switch to can- cel the turn signals.TIPTo protect the battery, the EC-03 is
equipped with an auto-off function. The
power stops automatically if the vehicle
is stopped for more than five minutes. To restart the vehicle after the vehicle
has been stopped for more than five
minutes, turn the key to “OFF” and then
back to “ON” again.
EAU50111
Acceleration and deceleration The speed can be adjusted by opening
and closing the accelerator grip. To in-
crease the speed, turn the accelerator
grip in direction (a). To reduce the
speed, turn the accelerator grip in di-
rection (b).
(a)
(b)
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OPERATION AND IMPORTANT RIDING POINTS
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9
EAU50961
Braking
WARNING
EWA10300

Avoid braking hard or suddenly
(especially when leaning over to
one side), otherwise the scooter
may skid or overturn.

Railroad crossings, streetcar
rails, iron plates on road con-
struction sites, and manhole
covers become extremely slip-
pery when wet. Therefore, slow
down when approaching such
areas and cross them with cau-
tion.

Keep in mind that braking on a
wet road is much more difficult.

Ride slowly down a hill, as brak-
ing downhill can be very diffi-cult.
1. Close the accelerator grip com- pletely.
2. Apply both front and rear brakes simultaneously while gradually in-
creasing the pressure. Front
Rear
EAU50122
Parking To prevent theft, be sure to lock the
steering and remove the key when
parking. It is recommended to addition-
ally use a chain lock or other type of
motorcycle lock.
WARNING
EWA15580
Do not park on a slope or on soft
ground, otherwise the vehicle mayoverturn.TIP
If the vehicle is parked in an ex-
tremely hot or cold place, the tem-
perature protection function may
be activated when the key is
turned to “ON”. If this is activated,
“HEAT” or “COOL” flashes on the
tripmeter/odometer display. (See
page 4-4 “Temperature warning
display” for more information about
the temperature protection func-
tion.)

It is recommended to lock the se-
curity lock when parking. (See
page 4-10 for more informationabout locking the security lock.)
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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.
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PERIODIC MAINTENANCE AND ADJUSTMENT
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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
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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
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PERIODIC MAINTENANCE AND ADJUSTMENT
8-4
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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.
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PERIODIC MAINTENANCE AND ADJUSTMENT
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789
WARNING
EWA10471

Have a Yamaha dealer replace
excessively worn tires. Besides
being illegal, operating the vehi-
cle with excessively worn tires
decreases riding stability and
can lead to loss of control.

The replacement of all wheel
and brake-related parts, includ-
ing the tires, should be left to a
Yamaha dealer, who has the
necessary professional knowl-
edge and experience to do so.

Ride at moderate speeds after
changing a tire since the tire
surface must first be “broken
in” for it to develop its optimalcharacteristics.
EAU22003
Cast wheels
WARNING
EWA10610
The wheels on this model are not de-
signed for use with tubeless tires.
Do not attempt to use tubeless tireson this model.
To maximize the performance, durabil-
ity, and safe operation of your vehicle,
note the following points regarding the
specified wheels.
The wheel rims should be checked
for cracks, bends, warpage or oth-
er damage before each ride. If any
damage is found, have a Yamaha
dealer replace the wheel. Do not
attempt even the smallest repair to
the wheel. A deformed or cracked
wheel must be replaced.

The wheel should be balanced
whenever either the tire or wheel
has been changed or replaced. An
unbalanced wheel can result in
poor performance, adverse han-
dling characteristics, and a short-
ened tire life.
EAU22152
Adjusting the front and rear
brake lever free play The front and rear brake lever free play
should be measured at the positions as
shown.
Front
Front tire:Size: 60/100-12 36J
Manufacturer/model:
INOUE RUBBER/MB80
Rear tire: Size:
60/100-12 36J
Manufacturer/model: INOUE RUBBER/MB80
1. Front brake lever
2. Brake lever free play
1
2
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PERIODIC MAINTENANCE AND ADJUSTMENT
8-7
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78
9Rear
Periodically check the front and rear
brake lever free play and, if necessary,
adjust them as follows.
To increase the brake lever free play,
turn the adjusting nut at the brake shoe
plate in direction (a). To decrease the
brake lever free play, turn the adjusting
nut in direction (b). Front
Rear
WARNING
EWA10650
If proper adjustment cannot be ob-
tained as described, have a Yamaha
dealer make this adjustment.
1. Rear brake lever
2. Brake lever free playFront brake lever free play:
10.0–20.0 mm (0.39–0.79 in)
Rear brake lever free play: 10.0–20.0 mm (0.39–0.79 in)
1
2
1. Front brake lever free play adjusting nut
1. Rear brake lever free play adjusting nut
(a)
(b)
1
1
(a)
(b)
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PERIODIC MAINTENANCE AND ADJUSTMENT
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EAU22361
Checking the front and rear
brake shoes Front
Rear The front and rear brake shoes must be
checked for wear at the intervals spec-
ified in the periodic maintenance and
lubrication chart. Each brake is provid-
ed with a wear indicator, which allows
you to check the brake shoe wear with-
out having to disassemble the brake.
To check the brake shoe wear, check
the position of the wear indicator while
applying the brake. If a brake shoe has
worn to the point that the wear indicator
reaches the wear limit line, have a
Yamaha dealer replace the brake
shoes as a set.
EAU23095
Checking and lubricating the
cables The operation of all control cables and
the condition of the cables should be
checked before each ride, and the ca-
bles and cable ends should be lubricat-
ed if necessary. If a cable is damaged
or does not move smoothly, have a
Yamaha dealer check or replace it.
WARNING! Damage to the outer
housing of cables may result in in-
ternal rusting and cause interfer-
ence with cable movement. Replace
damaged cables as soon as possi-
ble to prevent unsafe condi-
tions.
[EWA10711]

1. Brake shoe wear indicator
2. Brake shoe wear limit line
1. Brake shoe wear indicator
2. Brake shoe wear limit line
1
2
1
2
Recommended lubricant:
Yamaha Chain and Cable Lube or
engine oil
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