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EAU17280
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 follo-
wing 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, GEO-
GRAPHICAL LOCATION, AND INDIVI-
DUAL USE, THE MAINTENANCE
INTERVALS MAY NEED TO BE
SHORTENED.
EWA10320
s s
WARNING
If you are not familiar with mainte-
nance work, have a Yamaha dealer
do it for you.
EWA10330
s s
WARNING
This scooter is designed for use on
paved roads only. If this scooter is
operated in abnormally dusty,
muddy or wet conditions, the air fil-
ter element should be cleaned or
replaced more frequently, otherwi-
se rapid engine wear may result.
Consult a Yamaha dealer for proper
maintenance intervals.
EAU17520
Owner’s tool kit
1. Owner’s tool kit
The owner’s tool kit is located inside
the storage compartment under the
seat. (See page 3-14.)
The service information included in
this manual and the tools provided in
the owner’s tool kit are intended to
assist you in the performance of pre-
ventive maintenance and minor
repairs. However, additional tools
such as a torque wrench may be
necessary to perform certain mainte-
nance work correctly.
PERIODIC MAINTENANCE AND MINOR REPAIR
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Page 51 of 88
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
vehicle is ridden normally).
NOTE:
If the spark plug shows a distinctly
different color, the engine could be
operating improperly. Do not attempt
to diagnose such problems yourself.
Instead, have a Yamaha dealer check
the vehicle.
2. Check the spark plug for electro-
de erosion and excessive carbon
or other deposits, and replace it if
necessary.
To install the spark plug
1. Measure the spark plug gap with
a wire thickness gauge and, if
necessary, adjust the gap to spe-
cification.2. Clean the surface of the spark
plug gasket and its mating surfa-
ce, 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.
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 pos-
sible.
4. Install the spark plug cap.
5. Install the cowling.
EAUM2270
Engine oil
The engine oil level should be chec-
ked before each ride. In addition, the
oil must be changed at the intervals
specified in the periodic maintenance
and lubrication chart and when the
service indicator light comes on.
To check the engine oil level
1. Place the scooter on the centers-
tand.
NOTE:
Make sure that the scooter is positio-
ned 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.
Tightening torque:
Spark plug:
12.5 Nm (1.25 m·kgf, 9.0 ft·lbf)
Spark plug gap:
0.8-0.9 mm (0.031-0.035 in)
Specified spark plug:
NGK/ CPR 9EA-9
PERIODIC MAINTENANCE AND MINOR REPAIR
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●If 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.
EWA10380
s s
WARNING
Never attempt to remove the radia-
tor cap when the engine is hot.
5. Close the reservoir cap
6. Place the floorboard mat in the
original position and push it
downward to secure it.
EAU33030
Changing the coolantEWA10380
s s
WARNING
Never attempt to remove the radia-
tor cap when the engine is hot.
The coolant must be changed at the
intervals specified in the periodic
maintenance and lubrication chart.
Have a Yamaha dealer change the
coolant.
EAUM2241
Air filter and V-belt case air
filter elements
The air filter element should be repla-
ced and the V-belt case air filter ele-
ment should be cleaned at the inter-
vals specified in the periodic
maintenance and lubrication chart.
Service the air filter elements more
frequently if you are riding in unu-
sually wet or dusty areas.
Replacing the air filter element
1. Place the scooter on the centers-
tand.
2. Remove the air filter case cover
by removing the screws.
1. Air filter case cover
3. Pull the air filter element out.
1. Air filter element
4. Insert a new air filter element into
the air filter case.
5. Install the air filter case cover by
installing the screws.
Cleaning the V-belt case air filter
element
1. Remove the V-belt case air filter
covers by removing the screws.
PERIODIC MAINTENANCE AND MINOR REPAIR
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