2003 YAMAHA MAJESTY 250 Owners Manual

6-6
PERIODIC MAINTENANCE AND MINOR REPAIR
6
EAU03624
Removing and installing the
cowlings and panel
Cowlings and panel, removing and installingThe cowlings and panel shown above
need to be removed to perform some
of the maintenance jobs described in
this chapter. Refer to this section
each time a cowling or the panel
needs to be removed and installed.
1
1. Cowling A
1
1. Cowling C
1
1. Cowling B
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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 ACowling *To remove the cowling
1. 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 BCowling *To remove the cowling
1. Pull up the right floorboard mats
as shown.
1
2
1. Mat A
2. Mat B
To install the cowling
1. 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
cC
Take care not to damage the tabs
on the cowling when removing and
or installing it.
1
1. 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 cowling
1. 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
cC
Take 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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6-10
PERIODIC MAINTENANCE AND MINOR REPAIR
6
EAU03617
Cowling C
To remove the cowling
1. Remove the cowling screws.
1
1. Screw (×2)
2. Push the cowling in lightly, and
then pull it back as shown.
ECA00067
cC
Take care not to damage the tabs
on the cowling when removing and
or installing it.
aa
a. 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 APanel *To remove the panel
Remove 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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