Page 25 of 72
EAU13452
2-stroke engine oil
1. Oil tank cap
Make sure that there is sufficient 2-
stroke engine oil in the oil tank. Add
the recommended 2-stroke engine oil
as necessary.
NOTE:
Make sure that the 2-stroke engine oil
tank cap is properly installed.
EAUM1141
2-stroke engine oil tank
To access the 2-stroke engine oil
tank, open the storage compartment.
(See page 3-11.)
1. Remove the 2-stroke engine oil
tank cap by pulling it off.
2. Install the 2-stroke engine oil tank
cap by pushing it into the oil tank
opening.
NOTE:
Make sure that the 2-stroke engine oil
tank cap is properly installed before
riding the vehicle.
Recommended oil:
Yamalube 2 or equivalent 2-stroke
engine oil (JASO grade “FC”, or
ISO grades “EG-C” or “EG-D”)
Oil quantity:
1.4 L (1.48 US qt) (1.23 Imp.qt)
INSTRUMENT AND CONTROL FUNCTIONS
3-9
3
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Page 26 of 72
EAUS1050
Kickstarter
To start the engine, push the kickstar-
ter down lightly with your foot until the
gears engage, and then push it down
smoothly but forcefully.
1. Kickstarter
EAU14160
Seat
To open the seat
1. Place the scooter on the centers-
tand.
2. Insert the key into the main
switch, and then turn it counter-
clockwise.
1. Open
NOTE:
Do not push inward when turning the
key.
3. Fold the rider up.
1. Seat
To close the seat
1. Fold the seat down, and then
push it down to lock it in place.
2. Remove the key from the main
switch if the scooter will be left
unattended.
NOTE:
Make sure that the seat is properly
secured before riding.
1
INSTRUMENT AND CONTROL FUNCTIONS
3-10
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 30 of 72
PRE-OPERATION CHECKS
4-2
4
EAU15605
Pre-operation check list
ITEM CHECKS PAGE
• Check fuel level in fuel tank.
Fuel• Refuel if necessary.3-8
• Check fuel line for leakage.
• Check oil level in oil tank.
2-stroke engine oil• If necessary, add recommended oil to specified level. 3-9
• Check vehicle for oil leakage.
Final transmission oil• Check vehicle for oil leakage. 6-7
• Check coolant level in reservoir.
Coolant (for CS50Z)• If necessary, add recommended coolant to specified level. 6-8
• Check cooling system for leakage.
• Check operation.
• If soft or spongy, have Yamaha dealer bleed hydraulic system.
• Check brake pads for wear.
Front brake• Replace if necessary. 6-13, 6-14, 6-15
• Check fluid level in reservoir.
• If necessary, add recommended brake fluid to specified level.
• Check hydraulic system for leakage.
• Check operation.
Rear brake• Lubricate cable if necessary.
6-13, 6-14
• Check lever free play.
• Adjust if necessary.
• Make sure that operation is smooth.
Throttle grip• Check cable free play.
6-10, 6-16
• If necessary, have Yamaha dealer adjust cable free play and lubricate
cable and grip housing.
• Check for damage.
Wheels and tires• Check tire condition and tread depth.
6-11, 6-12
• Check air pressure.
• Correct if necessary.
Brake levers• Make sure that operation is smooth.
• Lubricate lever pivoting points if necessary.6-16
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Page 31 of 72
PRE-OPERATION CHECKS
4-3
4
ITEM CHECKS PAGE
Centerstand• Make sure that operation is smooth.
• Lubricate pivot if necessary.6-17
Chassis fasteners• Make sure that all nuts, bolts and screws are properly tightened.
• Tighten if necessary.—
Instruments, lights, signals• Check operation.
and switches• Correct if necessary.—
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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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