2003 YAMAHA MAJESTY 250 ECU

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ABSABSThe Yamaha ABS (Anti-lock Brake
System) features a dual electronic
control system, which acts on the
front and rear brakes independently.
The ABS securely controls wheel
lockup during emergency braking on
changing road surfaces and under
various weather conditions, thereby
maximizing tire adhesion and perfor-
mance while providing a smooth
braking action. The ABS is monitored
by an ECU (Electronic Control Unit),
which will have recourse to manual
braking if a malfunction occurs.
INSTRUMENT AND CONTROL FUNCTIONS
3
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8 8
The ABS performs best on
long braking distances.
8 8
On certain (rough or gravel)
roads, the braking distance
may be longer with than with-
out the ABS. Therefore, always
keep a sufficient distance to
the vehicle ahead to match the
riding speed.
NOTE:
8When the ABS is activated, the
brakes are operated in the usual
way. A pulsating action may be
felt at the brake levers, but this
does not indicate a malfunction.
8This ABS has a test mode which
allows the owner to experience
the pulsating at the brake levers
when the ABS is operating.
However, special tools are
required, so please consult your
Yamaha dealer when performing
this test.
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INSTRUMENT AND CONTROL FUNCTIONS
3 ABS components
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15
1. Front brake hose
2. Rear brake hose
3. ABS warning light
4. Fail-safe relay
5. ECU (Electronic Control Unit)
6. Stop relay
7. Hydraulic Unit (HU)
8. Front brake hose
9. Front wheel sensor rotor
10.Front wheel sensor
11.Fuse boxes
12.ABS test coupler
13.Rear brake hose
14.Rear wheel sensor rotor
15.Rear wheel sensor
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INSTRUMENT AND CONTROL FUNCTIONS
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Rider seat
Rider seatTo open the rider seat
1. Place the scooter on the center-
stand.
2. Insert the key into the main
switch, and then turn it counter-
clockwise.
NOTE:
Do not push inward when turning the
key.
IGNITIONP
LOCK
ON
OFF
OPEN
PUSH
PUSH
a
a. Open.
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Adjusting the rider seatRider seat, adjustingThe rider seat can be adjusted as fol-
lows to change the riding position.
1. Open the rider seat.
1
1. Rider seat
3. Fold the rider seat up.
To close the rider seat
1. Fold the rider seat down, and
then push it down to lock it in
place.
2. Remove the key from the main
switch if the scooter will be left
unattended.
NOTE:
Make sure that the seat is properly
secured before riding.
1
1. Rider seat
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3-19
2. Remove the bolts and collars.
3. Slide the rider seat forward or
backward to the desired position.
4. Install the collars and securely
tighten the bolts.
5. Close the rider seat.
INSTRUMENT AND CONTROL FUNCTIONS
311
22
1. Bolt (×4)
2. Collar (×4)
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Storage compartments
Storage compartmentsFront storage compartment A
To open the storage compartment
when it is locked, insert the key in the
lock, turn it counterclockwise, and
then grasp the lock while pushing the
button in.
To open the storage compartment
when it is unlocked, simply grasp the
lock while pushing the button in.
1
2
a
1. Button
2. Lid
a. Open.
To lock the storage compartment,
push the lid into the original position,
insert the key in the lock, turn it clock-
wise, and then remove it.
1
2
a
1. Button
2. Lid
a. Lock.
Compartment ACompartment A
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PERIODIC MAINTENANCE AND MINOR REPAIR
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Because loading has an enormous
impact on the handling, braking,
performance and safety character-
istics of your scooter, you should
keep the following precautions in
mind.
8 8
NEVER OVERLOAD THE
SCOOTER! Operation of an
overloaded scooter may result
in tire damage, loss of control,
or severe injury. Make sure
that the total weight of rider,
cargo, and accessories does
not exceed the specified maxi-
mum load for the vehicle.
8 8
Do not carry along loosely
packed items, which can shift
during a ride.
8 8
Securely pack the heaviest
items close to the center of the
scooter and distribute the
weight evenly on both sides.Tire inspection
The tires must be checked before
each ride. If the center tread depth
reaches the specified limit, if the tire
has a nail or glass fragments in it, or
if the sidewall is cracked, have a
Yamaha dealer replace the tire imme-
diately.
1a
1. Sidewall
a. Tire tread depth
8 8
Adjust the suspension and tire
air pressure with regard to the
load.
8 8
Check the tire condition and
air pressure before each ride.
Minimum tire tread depth
(front and rear)1.6 mm
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PERIODIC MAINTENANCE AND MINOR REPAIR
6
To check the operation
1. Place the scooter on a level sur-
face and hold it in an upright
position.
2. While applying the front brake,
push down hard on the handle-
bars several times to check if the
front fork compresses and
rebounds smoothly.
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cC
If any damage is found or the front
fork does not operate smoothly,
have a Yamaha dealer check or
repair it.
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Checking the front forkFront fork, checkingThe condition and operation of the
front fork must be checked as follows
at the intervals specified in the peri-
odic maintenance and lubrication
chart.
To check the condition
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Securely support the scooter so
that there is no danger of it falling
over.
Check the inner tubes for scratches,
damage and excessive oil leakage.
Centerstand
Recommended lubricant:
Lithium-soap-based grease
(all-purpose grease)
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PERIODIC MAINTENANCE AND MINOR REPAIR
6
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Checking the steeringSteering, checkingWorn or loose steering bearings may
cause danger. Therefore, the opera-
tion of the steering must be checked
as follows at the intervals specified in
the periodic maintenance and lubrica-
tion chart.
1. Place a stand under the engine
to raise the front wheel off the
ground.
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Securely support the scooter so
that there is no danger of it falling
over.
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Checking the wheel bearingsWheel bearings, checkingThe front and rear wheel bearings
must be checked at the intervals
specified in the periodic maintenance
and lubrication chart. If there is play
in the wheel hub or if the wheel does
not turn smoothly, have a Yamaha
dealer check the wheel bearings.
2. Hold the lower ends of the front
fork legs and try to move them
forward and backward. If any
free play can be felt, have a
Yamaha dealer check or repair
the steering.
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PERIODIC MAINTENANCE AND MINOR REPAIR
6 4. Unhook the headlight bulb hold-
er, and then remove the defec-
tive bulb.EW000119
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Headlight bulbs get very hot.
Therefore, keep flammable prod-
ucts away from a lit headlight bulb,
and do not touch the bulb until it
has cooled down.
1
1. Headlight bulb holder
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Do not touch the glass part of the
headlight bulb to keep it free from
oil, otherwise the transparency of
the glass, the luminosity of the
bulb, and the bulb life will be
adversely affected. Thoroughly
clean off any dirt and fingerprints
on the headlight bulb using a cloth
moistened with alcohol or thinner.
6. Install the headlight bulb cover,
and then connect the coupler.
a
a. Do not touch the glass part of the bulb.
5. Place a new headlight bulb into
position, and then secure it with
the bulb holder.
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