2003 YAMAHA MAJESTY 250 engine

3-17
Your Yamaha engine has been
designed to use regular unleaded
gasoline with a research octane num-
ber of 91 or higher. If knocking (or
pinging) occurs, use a gasoline of a
different brand or premium unleaded
fuel. Use of unleaded fuel will extend
spark plug life and reduce mainte-
nance costs.
INSTRUMENT AND CONTROL FUNCTIONS
3
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Catalytic converterCatalytic converterThis scooter is equipped with a cat-
alytic converter in the muffler.
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The exhaust system is hot after
operation. Make sure that the
exhaust system has cooled down
before doing any maintenance
work.
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The following precautions must be
observed to prevent a fire hazard
or other damages.
8 8
Use only unleaded gasoline.
The use of leaded gasoline will
cause unrepairable damage to
the catalytic converter.
8 8
Never park the scooter near
possible fire hazards such as
grass or other materials that
easily burn.
8 8
Do not allow the engine to idle
too long.
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3-22
INSTRUMENT AND CONTROL FUNCTIONS
3
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SidestandSidestandThe sidestand is located on the left
side of the frame. Raise the side-
stand or lower it with your foot while
holding the scooter upright.
NOTE:
The built-in sidestand switch is part of
the ignition circuit cut-off system,
which cuts the ignition in certain situ-
ations. (See further down for an
explanation of the ignition circuit cut-
off system.)
1
1. Sidestand switch
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Ignition circuit cut-off
system
Ignition circuit cut-off systemThe ignition circuit cut-off system
(comprising the sidestand switch and
brake light switches) has the follow-
ing functions.
8It prevents starting when the
sidestand is up, but neither brake
is applied.
8It prevents starting when either
brake is applied, but the side-
stand is still down.
8It cuts the running engine when
the sidestand is moved down.
Periodically check the operation of
the ignition circuit cut-off system
according to the following procedure.
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If a malfunction is noted, have a
Yamaha dealer check the system
before riding.
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The scooter must not be ridden
with the sidestand down, or if the
sidestand cannot be properly
moved up (or does not stay up),
otherwise the sidestand could con-
tact the ground and distract the
operator, resulting in a possible
loss of control. Yamaha’s ignition
circuit cut-off system has been
designed to assist the operator in
fulfilling the responsibility of rais-
ing the sidestand before starting
off. Therefore, check this system
regularly as described below and
have a Yamaha dealer repair it if it
does not function properly.
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3-23
INSTRUMENT AND CONTROL FUNCTIONS
3
The sidestand switch may be defective.
The scooter should not be ridden until
checked by a Yamaha dealer.YES NO
With the engine turned off:
1. Move the sidestand down.
2. Make sure that the engine stop switch is set to “#”.
3. Turn the key to “ON”.
4. Keep the front or rear brake applied.
5. Push the start switch.
Does the engine start?
The brake switch may be defective.
The scooter should not be ridden until
checked by a Yamaha dealer.
With the engine still off:
6. Move the sidestand up.
7. Keep the front or rear brake applied.
8. Push the start switch.
Does the engine start?
With the engine still running:
9. Move the sidestand down.
Does the engine stall?
The sidestand switch may be defective.
The scooter should not be ridden until
checked by a Yamaha dealer.
NOTE:
This check is most reliable if performed with
a warmed-up engine.
YES NO
The system is OK. The scooter can be ridden.
YES NO
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4-1
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PRE-OPERATION CHECKS
4The condition of a vehicle is the owner’s responsibility. Vital components can start to deteriorate quickly and unexpect-
edly, even if the vehicle remains unused (for example, as a result of exposure to the elements). Any damage, fluid leak-
age or loss of tire air pressure could have serious consequences. Therefore, it is very important, in addition to a thor-
ough visual inspection, to check the following points before each ride.
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Pre-operation check listPre-operation check list
ITEM CHECKS PAGE
Fuel•Check fuel level in fuel tank.
•Refuel if necessary.
•Check fuel line for leakage.3-5, 3-16– 3-17
Engine oil•Check oil level in engine.
•If necessary, add recommended oil to specified level.
•Check vehicle for oil leakage.6-14–6-17
Final transmission oil•Check vehicle for oil leakage. 6-18–6-19
Coolant•Check coolant level in reservoir.
•If necessary, add recommended coolant to specified level.
•Check cooling system for leakage.3-5, 6-19–6-20
Front brake•Check operation.
•If soft or spongy, have Yamaha dealer bleed hydraulic system.
•Check lever free play.
•Adjust if necessary.
•Check fluid level in reservoir.
•If necessary, add recommended brake fluid to specified level.
•Check hydraulic system for leakage.3-11, 6-27–6-30
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OPERATION AND IMPORTANT RIDING POINTS
Starting the engine ............................................................................5-1
Starting off .........................................................................................5-2
Acceleration and deceleration ...........................................................5-3
Braking ..............................................................................................5-3
Tips for reducing fuel consumption ....................................................5-4
Engine break-in .................................................................................5-4
Parking ..............................................................................................5-5
5
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3
2
1
1. Start switch
2. Front brake lever
3. Rear brake lever
5-1
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OPERATION AND IMPORTANT RIDING POINTS
5
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8 8
Become thoroughly familiar
with all operating controls and
their functions before riding.
Consult a Yamaha dealer
regarding any control or func-
tion that you do not thorough-
ly understand.
8 8
Never start the engine or oper-
ate it in a closed area for any
length of time. Exhaust fumes
are poisonous, and inhaling
them can cause loss of con-
sciousness and death within a
short time. Always make sure
that there is adequate ventila-
tion.
8 8
For safety, always start the
engine with the centerstand
down.
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Starting the engineStarting the engineEC000046
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See page 5-4 for engine break-in
instructions prior to operating the
vehicle for the first time.
In order for the ignition circuit cut-off
system to enable starting, the side-
stand must be up.
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8 8
Before starting the engine,
check the function of the igni-
tion circuit cut-off system
according to the procedure
described on page 3-23.
8 8
Never ride with the sidestand
down.
1. Turn the key to “ON” and make
sure that the engine stop switch
is set to “#”.
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When the key is turned to “ON”,
the ABS warning light should
come on for a few seconds, and
then go off. If the ABS warning
light does not come on or remains
on, have a Yamaha dealer inspect
the electrical circuit.
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5-2
OPERATION AND IMPORTANT RIDING POINTS
5 2. Close the throttle completely.
3. Start the engine by pushing the
start switch while applying the
front or rear brake.
NOTE:
If the engine does not start, release
the start switch, wait a few seconds,
and then try again. Each starting
attempt should be as short as possi-
ble to preserve the battery. Do not
crank the engine more than 10 sec-
onds on any one attempt. If the
engine does not start, try with the
throttle open 1/8 turn.
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For maximum engine life, never
accelerate hard when the engine is
cold!
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Starting off
Starting offNOTE:
Before starting off, allow the engine
to warm up.
1. While pulling the rear brake lever
with your left hand and holding
the grab bar with your right hand,
push the scooter off the center-
stand.
2. Sit astride the seat, and then
adjust the rear view mirrors.
3. Switch the turn signal on.4. Check for oncoming traffic, and
then slowly turn the throttle grip
(on the right) in order to take off.
5. Switch the turn signal off.
1
1. Grab bar
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5-4
OPERATION AND IMPORTANT RIDING POINTS
5
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Tips for reducing fuel
consumption
Fuel consumption, tips for reducingFuel consumption depends largely on
your riding style. Consider the follow-
ing tips to reduce fuel consumption:
8Avoid high engine speeds during
acceleration.
8Avoid high engine speeds with
no load on the engine.
8Turn the engine off instead of let-
ting it idle for an extended length
of time (e.g., in traffic jams, at
traffic lights or at railroad cross-
ings).
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Engine break-inEngine break-inThere is never a more important peri-
od in the life of your engine than the
period between 0 and 1,600 km. For
this reason, you should read the fol-
lowing material carefully.
Since the engine is brand new, do
not put an excessive load on it for the
first 1,600 km. The various parts in
the engine wear and polish them-
selves to the correct operating clear-
ances. During this period, prolonged
full-throttle operation or any condition
that might result in engine overheat-
ing must be avoided.
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0–1,000 km
Avoid prolonged operation above
4,000 r/min.
1,000–1,600 km
Avoid prolonged operation above
5,000 r/min.
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After 1,000 km of operation, be
sure to replace the engine oil and
final transmission oil.
1,600 km and beyond
The vehicle can now be operated
normally.
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8
8
Keep the engine speed below
8,500 r/min.
8 8
If any engine trouble should
occur during the engine break-
in period, immediately have a
Yamaha dealer check the vehi-
cle.
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