2002 YAMAHA MAJESTY 250 Owners Manual

6-7
PERIODIC MAINTENANCE AND MINOR REPAIR
6
1
1. Panel A
2. Remove the cowling screws.
2 11
1. Screw (×4)
2. Cowling A
EAU03615
Cowling A
To remove the cowling1. Pull up the left floorboard mats
as shown.
1
2
1. Mat A
2. Mat B
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6-8
PERIODIC MAINTENANCE AND MINOR REPAIR
6 3. Pull the cowling down slightly,
and then pull it outward as
shown.
EAU03632
Cowling B
To remove the cowling1. Pull up the right floorboard mats
as shown.
1
2
1. Mat A
2. Mat B
To install the cowling1. Insert the tabs on the cowling
into the slots as shown, and then
install the screws.
2. Place the floorboard mats in the
original position.
ECA00067
cCTake care not to damage the tabs
on the cowling when removing and
or installing it.11. Tab (×10)
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6-9
PERIODIC MAINTENANCE AND MINOR REPAIR
62. Remove the screws.
2 1
1
1. Screw (×4)
2. Cowling B
To install the cowling1. Insert the tabs on the cowling
into the slots as shown, and then
install the screws.
2. Place the floorboard mats in the
original position.
ECA00067
cCTake care not to damage the tabs
on the cowling when removing and
or installing it.
1
1. Tab (×10)
3. Pull the cowling down slightly,
and then pull it outward as
shown.
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PERIODIC MAINTENANCE AND MINOR REPAIR
6
EAU03617
Cowling C
To remove the cowling1. Remove the cowling screws.
1
1. Screw (×2)
2. Push the cowling in lightly, and
then pull it back as shown.
ECA00067
cCTake care not to damage the tabs
on the cowling when removing and
or installing it.aaa. Push.
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6-11
PERIODIC MAINTENANCE AND MINOR REPAIR
6To install the cowling
1. Insert the tabs on the cowling
into the slots as shown, and then
push the cowling in until it snaps
into place.
2. Install the cowling screws.
1
2
1. Tab (×4)
2. Slot (×4)
EAU03628
Panel A
To remove the panelRemove the bolts, and then pull the
panel out as shown.
1
2
1. Bolt (×2)
2. Panel A
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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.
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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
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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.
EAU03119
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)
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