2003 YAMAHA MAJESTY 250 engine

5-5
OPERATION AND IMPORTANT RIDING POINTS
5
EAU00461
ParkingParkingWhen parking, stop the engine, and
then remove the key from the main
switch.
EW000058
w
8 8
Since the engine and exhaust
system can become very hot,
park in a place where pedestri-
ans or children are not likely
to touch them.
8 8
Do not park on a slope or on
soft ground, otherwise the
scooter may overturn.
EC000062
cC
Never park in an area where there
are fire hazards such as grass or
other flammable materials.
5SJ-28199-E1 7/11/02 11:03 AM Page 48

PERIODIC MAINTENANCE AND MINOR REPAIR
Owner’s tool kit ....................................................6-1
Periodic maintenance and lubrication chart .........6-3
Removing and installing the cowlings and
panel .................................................................6-6
Checking the spark plug ....................................6-12
Engine oil ...........................................................6-14
Final transmission oil .........................................6-18
Coolant ..............................................................6-19
Air filter and V-belt case air filter elements ........6-21
Air flow louver ....................................................6-23
Adjusting the throttle cable free play .................6-23
Adjusting the valve clearance ...........................6-23
Tires ...................................................................6-24
Cast wheels .......................................................6-26
Adjusting the front and rear brake lever
free play ..........................................................6-27
Checking the front and rear brake pads ............6-28
Checking the brake fluid level ............................6-29
Changing the brake fluid ....................................6-30
Checking and lubricating the cables ..................6-30
Checking and lubricating the throttle grip
and cable ........................................................6-31
Lubricating the front and rear brake levers ........6-31Checking and lubricating the centerstand
and sidestand .................................................6-31
Checking the front fork ......................................6-32
Checking the steering ........................................6-33
Checking the wheel bearings ............................6-33
Removing the battery cover ...............................6-34
Battery ...............................................................6-34
Replacing the fuses ...........................................6-36
Replacing a headlight bulb ................................6-37
Replacing a front turn signal light bulb ..............6-39
Replacing a rear turn signal light bulb ...............6-40
Replacing a tail/brake light bulb .........................6-40
Replacing the license plate light bulb ................6-41
Troubleshooting .................................................6-42
Troubleshooting charts ......................................6-43
6
5SJ-28199-E1 7/11/02 11:03 AM Page 49

6-1
EAU00462
PERIODIC MAINTENANCE AND MINOR REPAIR
6
EAU00464
Safety is an obligation of the owner.
Periodic inspection, adjustment and
lubrication will keep your vehicle in
the safest and most efficient condi-
tion possible. The most important
points of inspection, adjustment, and
lubrication are explained on the fol-
lowing pages.
The intervals given in the periodic
maintenance and lubrication chart
should be simply considered as a
general guide under normal riding
conditions. However, DEPENDING
ON THE WEATHER, TERRAIN,
GEOGRAPHICAL LOCATION, AND
INDIVIDUAL USE, THE MAINTE-
NANCE INTERVALS MAY NEED TO
BE SHORTENED.
EAU03623
Owner’s tool kitTool kitThe owner’s tool kit is located inside
the rear storage compartment. (See
page 3-20 for the rear storage com-
partment opening procedures.)
EW000060
w
If you are not familiar with scooter
maintenance work, have a Yamaha
dealer do it for you.
EAU00466
w
This scooter is designed for use
on paved roads only. If this scoot-
er is operated in abnormally dusty,
muddy or wet conditions, the air
filter element should be cleaned or
replaced more frequently, other-
wise rapid engine wear may result.
Consult a Yamaha dealer for prop-
er maintenance intervals.
5SJ-28199-E1 7/11/02 11:03 AM Page 50

6-4
PERIODIC MAINTENANCE AND MINOR REPAIR
6
8*Brake hoses•Check for cracks or damage.√√√√ √
•Replace. (See NOTE on page 6-5.)Every 4 years
9
*Wheels•Check runout and for damage.√√√√
10
*Tires•Check tread depth and for damage.
•Replace if necessary.
•Check air pressure.
•Correct if necessary.√√√√ √
11
*Wheel bearings•Check bearing for looseness or damage.√√√√
12
*Steering bearings•Check bearing play and steering for roughness.√√√√√
•Lubricate with lithium-soap-based grease.Every 20,000 km
13
*Chassis fasteners•Make sure that all nuts, bolts and screws are properly tightened.√√√√ √
14 Sidestand, centerstand•Check operation.
•Lubricate.√√√√ √
15
*Sidestand switch•Check operation.√√√√√ √
16
*Front fork•Check operation and for oil leakage.√√√√
17
*Shock absorber
assemblies•Check operation and shock absorbers for oil leakage.√√√√
18
*Carburetor•Adjust engine idling speed.√√√√√ √
19 Engine oil•Change. (See page 3-3 and 6-17 for more information
about the oil change indicator light.)√When the oil change indicator light comes on
(every 3,000 km)
•Check oil level and vehicle for oil leakage.Every 3,000 km√ NO. ITEM CHECK OR MAINTENANCE JOBODOMETER READING (× 1,000 km)
ANNUAL
CHECK
1 10203040
5SJ-28199-E1 7/11/02 11:03 AM Page 53

6-5
PERIODIC MAINTENANCE AND MINOR REPAIR
6
EAU03884
NOTE:
8The air filter needs more frequent service if you are riding in unusually wet or dusty areas.
8Hydraulic brake service
9Regularly check and, if necessary, correct the brake fluid level.
9Every two years replace the internal components of the brake master cylinders and calipers, and change the
brake fluid.
9Replace the brake hoses every four years and if cracked or damaged.
20*Engine oil strainer•Clean.√
21
*Cooling system•Check coolant level and vehicle for coolant leakage.√√√√ √
•Change.Every 3 years
22 Final transmission oil•Check vehicle for oil leakage.√√ √
•Change.√√√
23
*V-belt•Replace.Every 20,000 km
24
*Front and rear brake
switches•Check operation.√√√√√ √
25 Moving parts and cables•Lubricate.√√√√ √
26
*Throttle grip housing
and cable•Check operation and free play.
•Adjust the throttle cable free play if necessary.
•Lubricate the throttle grip housing and cable.√√√√ √
27
*Lights, signals and
switches•Check operation.
•Adjust headlight beam.√√√√√ √ NO. ITEM CHECK OR MAINTENANCE JOBODOMETER READING (× 1,000 km)
ANNUAL
CHECK
1 10203040
5SJ-28199-E1 7/11/02 11:03 AM Page 54

6-12
PERIODIC MAINTENANCE AND MINOR REPAIR
6 To install the panel
Place the panel in the original posi-
tion, and then install the bolts.
1
1
1. Tab (×4)
To remove the spark plug
1. Remove cowling B. (See page
6-8 for cowling removal and
installation procedures.)
2. Remove the spark plug cap.
1
1. Spark plug cap
EAU03620
Checking the spark plugSpark plug, checkingThe spark plug is an important
engine component, which is easy to
check. Since heat and deposits will
cause any spark plug to slowly erode,
the spark plug should be removed
and checked in accordance with the
periodic maintenance and lubrication
chart. In addition, the condition of the
spark plug can reveal the condition of
the engine.
5SJ-28199-E1 7/11/02 11:03 AM Page 61

6-13
PERIODIC MAINTENANCE AND MINOR REPAIR
63. Remove the spark plug as
shown, with the spark plug
wrench included in the owner’s
tool kit.
1
1. Spark plug wrench
To install the spark plug
1. Measure the spark plug gap with
a wire thickness gauge and, if
necessary, adjust the gap to
specification.
2. Clean the surface of the spark
plug gasket and its mating sur-
face, and then wipe off any grime
from the spark plug threads.
3. Install the spark plug with the
spark plug wrench, and then
tighten it to the specified torque.
a
a. Spark plug gap
To check the spark plug
1. Check that the porcelain insula-
tor around the center electrode
of the spark plug is a medium-to-
light tan (the ideal color when the
scooter is ridden normally).
NOTE:
If the spark plug shows a distinctly
different color, the engine could be
defective. Do not attempt to diagnose
such problems yourself. Instead,
have a Yamaha dealer check the
scooter.
2. Check the spark plug for elec-
trode erosion and excessive car-
bon or other deposits, and
replace it if necessary.
Specified spark plug:
DR8EA (NGK)Spark plug gap:
0.6–0.7 mm
5SJ-28199-E1 7/11/02 11:03 AM Page 62

6-14
PERIODIC MAINTENANCE AND MINOR REPAIR
6
NOTE:
If a torque wrench is not available
when installing a spark plug, a good
estimate of the correct torque is
1/4–1/2 turn past finger tight.
However, the spark plug should be
tightened to the specified torque as
soon as possible.
4. Install the spark plug cap.
5. Install the cowling.To check the engine oil level
1. Place the scooter on the center-
stand.
NOTE:
Make sure that the scooter is posi-
tioned straight up when checking the
oil level. A slight tilt to the side can
result in a false reading.
2. Start the engine, warm it up for
several minutes, and then turn it
off.
EAU04611
Engine oilEngine oilThe engine oil level should be
checked before each ride. In addition,
the oil must be changed at the inter-
vals specified in the periodic mainte-
nance and lubrication chart and when
the oil change indicator light comes
on. Tightening torque:
Spark plug:
17.5 Nm (1.75 m·kgf)
5SJ-28199-E1 7/11/02 11:03 AM Page 63