2002 YAMAHA MAJESTY 250 check engine

6-18
PERIODIC MAINTENANCE AND MINOR REPAIR
6
EAU04228
Final transmission oilFinal transmission oilThe final transmission case must be
checked for oil leakage before each
ride. If any leakage is found, have a
Yamaha dealer check and repair the
scooter. In addition, the final trans-
mission oil must be changed as fol-
lows at the intervals specified in the
periodic maintenance and lubrication
chart.
1. Start the engine, warm it up by
riding the scooter for several
minutes, and then stop the
engine.
2. Place the scooter on the center-
stand.
3. Place an oil pan under the final
transmission case to collect the
used oil.4. Remove the oil filler cap and
drain bolt to drain the oil from the
final transmission case.
5. Install the final transmission oil
drain bolt, and then tighten it to
the specified torque.
6. Add the specified amount of the
recommended final transmission
oil, and then install and tighten
the oil filler cap.
1
1. Final tramsmission oil filler cap
EWA00062
w8Make sure that no foreign
material enters the final trans-
mission case.
8Make sure that no oil gets on
the tire or wheel.
1
1. Final transmission oil drain bolt
Tightening torque:
Final transmission oil drain bolt:
22 Nm (2.2 m·kgf)
Recommended final transmission
oil:
See page 8-2.
Oil quantity:
0.25 L
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6-19
PERIODIC MAINTENANCE AND MINOR REPAIR
67. Check the final transmission
case for oil leakage. If oil is leak-
ing, check for the cause.
EAU04591
CoolantCoolantThe coolant reservoir is located
under the battery cover. (See page
6-34 for battery cover removal and
installation procedures.)
To check the coolant level
1. Place the scooter on a level sur-
face and hold it in an upright
position.NOTE:
8The coolant level must be
checked on a cold engine since
the level varies with engine tem-
perature.
8Make sure that the scooter is
positioned straight up when
checking the coolant level. A
slight tilt to the side can result in
a false reading.
2. Check the coolant level in the
coolant reservoir.NOTE:
The coolant should be between the
minimum and maximum level marks.
1
2
1. Maximum level mark
2. Minimum level mark
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6-20
PERIODIC MAINTENANCE AND MINOR REPAIR
6 3. If the coolant is at or below the
minimum level mark, remove the
reservoir cap, add coolant to the
maximum level mark, and then
install the reservoir cap.
4. Install the battery cover.
1
1. Coolant reservoir cap
Coolant reservoir capacity:
0.4 L
EC000080
cC8If coolant is not available, use
distilled water or soft tap water
instead. Do not use hard water
or salt water since it is harmful
to the engine.
8If water has been used instead
of coolant, replace it with
coolant as soon as possible,
otherwise the engine may not
be sufficiently cooled and the
cooling system will not be pro-
tected against frost and corro-
sion.
8If water has been added to the
coolant, have a Yamaha dealer
check the antifreeze content of
the coolant as soon as possi-
ble, otherwise the effective-
ness of the coolant will be
reduced.
NOTE:
The radiator fan is automatically
switched on or off according to the
coolant temperature in the radiator. If
the engine overheats, see page 6-44
for further instructions.
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6-21
PERIODIC MAINTENANCE AND MINOR REPAIR
6
EAU03627
Air filter and V-belt case air
filter elementsAir filter and V-belt case air filter elements, cleaningThe air filter and V-belt case air filter
elements should be cleaned at the
intervals specified in the periodic
maintenance and lubrication chart.
Clean both filter elements more fre-
quently if you are riding in unusually
wet or dusty areas.
EC000092
cC8Make sure that each filter ele-
ment is properly seated in its
case.
8The engine should never be
operated without the filter ele-
ments installed, otherwise the
piston and/or cylinder may
become excessively worn.
Cleaning the air filter element
1. Place the scooter on the center-
stand.
2. Remove the air filter case cover
by removing the screws.
3. Pull the sponge material out
along with the mesh sheet, clean
it with solvent, and then squeeze
the remaining solvent out.1
2 2
3
4
1. Air filter case cover
2. Screw (×5)
3. Sponge material
4. Mesh sheet
4. Check the sponge material for
damage and replace it if neces-
sary.
5. Allow the sponge material to dry.
6. Apply oil of the recommended
type to the entire surface of the
sponge material, and then
squeeze the excess oil out.
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6-22
PERIODIC MAINTENANCE AND MINOR REPAIR
6
NOTE:
The sponge material should be wet
but not dripping.7. Insert the sponge material into
the air filter case.
8. Install the air filter case cover by
installing the screws. Recommended oil:
Engine oil
Cleaning the V-belt case air filter
element
1. Remove cowling A. (See page
6-7 for cowling removal and
installation procedures.)
2. Remove the air filter case cover
by removing the screws.
3. Remove the V-belt case air filter
cover by removing the screws.2
1
1. V-belt case air filter cover
2. Screw (×3)
4. Blow the dirt out of the air filter
element with compressed air as
shown.
5. Check the V-belt case air filter
element for damage and replace
it if necessary.
6. Install the V-belt case air filter
element cover by installing the
screws.
7. Install the air filter case cover by
installing the screws.
8. Install the cowling.
2
1
1. V-belt case air filter cover
2. V-belt case air filter element
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6-23
PERIODIC MAINTENANCE AND MINOR REPAIR
6
EAU03094
Air flow louverAir flow louverOpening the air flow louver may help
reduce air turbulence.
To open the air flow louver
Move the lever in direction a.
To close the air flow louver
Move the lever in direction b.
ECA00049
cCBe sure to close the louver when
riding in the rain and when wash-
ing the scooter.
12
b
3a
1. Air flow louver
2. Air inlet
3. Lever
EAU00637
Adjusting the valve
clearanceValve clearance, adjustingThe valve clearance changes with
use, resulting in improper air-fuel mix-
ture and/or engine noise. To prevent
this from occurring, the valve clear-
ance must be adjusted by a Yamaha
dealer at the intervals specified in the
periodic maintenance and lubrication
chart.
EAU00635
Adjusting the throttle cable
free playThrottle cable free play, adjustingThe throttle cable free play should
measure 3–5 mm at the throttle grip.
Periodically check the throttle cable
free play and, if necessary, have a
Yamaha dealer adjust it.
a
a. Throttle cable free play
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6-30
PERIODIC MAINTENANCE AND MINOR REPAIR
6 8Refill with the same type of brake
fluid. Mixing fluids may result in a
harmful chemical reaction and
lead to poor braking perfor-
mance.
8Be careful that water does not
enter the brake fluid reservoir
when refilling. Water will signifi-
cantly lower the boiling point of
the fluid and may result in vapor
lock.
8Brake fluid may deteriorate paint-
ed surfaces or plastic parts.
Always clean up spilled fluid
immediately.
8As the brake pads wear, it is nor-
mal for the brake fluid level to
gradually go down. However, if
the brake fluid level goes down
suddenly, have a Yamaha dealer
check the cause.
EAU03976
Changing the brake fluidBrake fluid, changingHave a Yamaha dealer change the
brake fluid at the intervals specified in
the NOTE after the periodic mainte-
nance and lubrication chart. In addi-
tion, have the oil seals of the master
cylinders and calipers as well as the
brake hoses replaced at the intervals
listed below or whenever they are
damaged or leaking.
8Oil seals: Replace every two
years.
8Brake hoses: Replace every four
years.
EAU02962
Checking and lubricating the
cablesCables, checking and lubricatingThe operation of all control cables
and the condition of the cables
should be checked before each ride,
and the cables and cable ends
should be lubricated if necessary. If a
cable is damaged or does not move
smoothly, have a Yamaha dealer
check or replace it.
EW000112
wDamage to the outer sheath may
interfere with proper cable opera-
tion and will cause the inner cable
to rust. Replace a damaged cable
as soon as possible to prevent
unsafe conditions.
Recommended lubricant:
Engine oil
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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.
EAU01144
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.
6-33
PERIODIC MAINTENANCE AND MINOR REPAIR
6
EAU00794
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.
EW000115
wSecurely support the scooter so
that there is no danger of it falling
over.
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