Page 24 of 72

EAU13211
Fuel
1. Fuel tank filler tube
2. Fuel level
Make sure that there is sufficient fuel
in the tank. Fill the fuel tank to the
bottom of the filler tube as shown.
EWA10880
s s
WARNING
●Do not overfill the fuel tank,
otherwise it may overflow
when the fuel warms up and
expands.
●Avoid spilling fuel on the hot
engine.
ECA10070
CAUTION:
Immediately wipe off spilled fuel
with a clean, dry, soft cloth, since
fuel may deteriorate painted surfa-
ces or plastic parts.
EAU13270
Your Yamaha engine has been desig-
ned to use regular unleaded gasoline
with a research octane number of 91
or higher. If knocking (or pinging)
occurs, use a gasoline of a different
brand or premium unleaded fuel. Use
of unleaded fuel will extend spark
plug life and reduce maintenance
costs.
EAU13431
Catalytic converter
This model is equipped with a cataly-
tic converter in the exhaust system.
EWA10860
s s
WARNING
The exhaust system is hot after
operation. Make sure that the
exhaust system has cooled down
before doing any maintenance
work.
ECA10700
CAUTION:
The following precautions must be
observed to prevent a fire hazard or
other damages.
●Use only unleaded gasoline.
The use of leaded gasoline will
cause unrepairable damage to
the catalytic converter.
●Never park the vehicle near
possible fire hazards such as
grass or other materials that
easily burn.
●Do not allow the engine to idle
too long.
Recommended fuel:
REGULAR UNLEADED GASOLINE
ONLY
Fuel tank capacity:
5.5 L (1.45 US gal) (1.21 Imp.gal)
Fuel reserve amount:
1.9 L (0.50 US gal) (0.42 Imp.gal)
1
2
ZAUM0020
INSTRUMENT AND CONTROL FUNCTIONS
3-8
3
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Page 27 of 72

EAU14510
Storage compartment
1. Storage compartment
There is a storage compartment
under the seat. (See page 3-10.)
EWA10960
s s
WARNING
●Do not exceed the load limit of
3.5 kg (7.7 lb) for the storage
compartment.
●Do not exceed the maximum
load of CS50/CS50M 169 kg
(373 lb) CS50Z 166 kg (366 lb)
for the vehicle.
ECA10080
CAUTION:
Keep the following points in mind
when using the storage compart-
ment.
●Since the storage compart-
ment accumulates heat when
exposed to the sun, do not sto-
re anything susceptible to heat
inside it.
●To avoid humidity from sprea-
ding through the storage com-
partment, wrap wet articles in
a plastic bag before storing
them in the compartment.
●Since the storage compart-
ment may get wet while the
scooter is being washed, wrap
any articles stored in the com-
partment in a plastic bag.
●Do not keep anything valuable
or breakable in the storage
compartment.
To store a helmet in the storage com-
partment, place the helmet upside-
down with the front facing forward.
NOTE:
●Some helmets cannot be stored
in the storage compartment
because of their size or shape.
●Do not leave your scooter unat-
tended with the seat open.
INSTRUMENT AND CONTROL FUNCTIONS
3-11
3
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Page 28 of 72
EAUT1070
Luggage hook
1. Luggage hook
EWAT1030
s s
WARNING
●Do not exceed the load limit of
1.5 kg (3.3 lb) for the luggage
hook.
●Do not exceed the maximum
load of CS50/CS50M 169 kg
(373 lb) CS50Z 166 (366 lb) for
the vehicle.
INSTRUMENT AND CONTROL FUNCTIONS
3-12
3
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Page 29 of 72
EAU15593
The condition of a vehicle is the owner’s responsibility. Vital components can start to deteriorate quickly and unexpec-
tedly, even if the vehicle remains unused (for example, as a result of exposure to the elements). Any damage, fluid lea-
kage or loss of tire air pressure could have serious consequences. Therefore, it is very important, in addition to a tho-
rough visual inspection, to check the following points before each ride.
NOTE:
Pre-operation checks should be made each time the vehicle is used. Such an inspection can be accomplished in a very
short time; and the added safety it assures is more than worth the time involved.
EWA11150
s s
WARNING
If any item in the Pre-operation check list is not working properly, have it inspected and repaired before opera-
ting the vehicle.
PRE-OPERATION CHECKS
4-1
4
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Page 32 of 72

EAU15980
EWA10870
s s
WARNING
●Become thoroughly familiar
with all operating controls and
their functions before riding.
Consult a Yamaha dealer
regarding any control or func-
tion that you do not thoroughly
understand.
●Never start the engine or ope-
rate it in a closed area for any
length of time. Exhaust fumes
are poisonous, and inhaling
them can cause loss of cons-
ciousness and death within a
short time. Always make sure
that there is adequate ventila-
tion.
●For safety, always start the
engine with the centerstand
down.
EAU16561
Starting a cold engineECA10250
CAUTION:
See page 5-4 for engine break-in
instructions prior to operating the
vehicle for the first time.
1. Turn the key to “h”, and when
the oil level warning light comes
on, turn it to “f”.
ECA10240
CAUTION:
If the oil level warning light does
not come on, have a Yamaha dealer
check the electrical circuit.
2. Close the throttle completely.
3. While applying the front or rear
brake, start the engine by pus-hing the start switch or by pus-
hing the kickstarter lever down.
NOTE:
If the engine fails to start by pushing
the start switch, release the switch,
wait a few seconds, and then try
again. Each starting attempt should
be as short as possible to preserve
the battery. Do not crank the engine
more than 5 seconds on any one
attempt. If the engine does not start
with the starter motor, try using the
kickstarter.
ECA11040
CAUTION:
For maximum engine life, never
accelerate hard when the engine is
cold!
ZAUM0367
m
OPERATION AND IMPORTANT RIDING POINTS
5-1
5
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Page 34 of 72

EAU16792
Braking
1. Close the throttle completely.
2. Apply both front and rear brakes
simultaneously while gradually
increasing the pressure.
EWA10300
s s
WARNING
●Avoid braking hard or suddenly
(especially when leaning over
to one side), otherwise the sco-
oter may skid or overturn.
●Railroad crossings, streetcar
rails, iron plates on road cons-
truction sites, and manhole
covers become extremely slip-
pery when wet. Therefore, slow
down when approaching suchareas and cross them with cau-
tion.
●Keep in mind that braking on a
wet road is much more difficult.
●Ride slowly down a hill, as bra-
king downhill can be very diffi-
cult.
EAU16820
Tips for reducing fuel
consumption
Fuel consumption depends largely on
your riding style. Consider the follo-
wing tips to reduce fuel consumption:
●Avoid high engine speeds during
acceleration.
●Avoid high engine speeds with no
load on the engine.
●Turn the engine off instead of let-
ting it idle for an extended length
of time (e.g., in traffic jams, at
traffic lights or at railroad cros-
sings).
OPERATION AND IMPORTANT RIDING POINTS
5-3
5
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Page 35 of 72

EAU16830
Engine break-in
There is never a more important
period in the life of your engine than
the period between 0 and 1000 km
(600 mi). For this reason, you should
read the following material carefully.
Since the engine is brand new, do not
put an excessive load on it for the first
1000 km (600 mi). The various parts in
the engine wear and polish themsel-
ves to the correct operating clearan-
ces. During this period, prolonged
full-throttle operation or any condition
that might result in engine overhea-
ting must be avoided.
EAU17212
Parking
When parking, stop the engine, and
then remove the key from the main
switch.
EWA10310
s s
WARNING
●Since the engine and exhaust
system can become very hot,
park in a place where pedes-
trians or children are not likely
to touch them.
●Do not park on a slope or on
soft ground, otherwise the
vehicle may overturn.
ECA10380
CAUTION:
Never park in an area where there
are fire hazards such as grass or
other flammable materials.
OPERATION AND IMPORTANT RIDING POINTS
5-4
5
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Page 36 of 72

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.
PERIODIC MAINTENANCE AND MINOR REPAIR
6-1
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