EAU10112
Welcome to the Yamaha world of motorcycling!
As the owner of the CS50 / CS50M / CS50Z, you are benefiting from Yamaha’s vast experience and newest technology
regarding the design and manufacture of high-quality products, which have earned Yamaha a reputation for dependa-
bility.
Please take the time to read this manual thoroughly, so as to enjoy all advantages of your CS50 / CS50M / CS50Z. The
Owner’s Manual does not only instruct you in how to operate, inspect and maint\
ain your scooter, but also in how to
safeguard yourself and others from trouble and injury.
In addition, the many tips given in this manual will help keep your scoo\
ter in the best possible condition. If you have
any further questions, do not hesitate to contact your Yamaha dealer.
The Yamaha team wishes you many safe and pleasant rides. So, remember to put safety first!
Yamaha continually seeks advancements in product design and quality. Therefore, while this manual contains the most
current product information available at the time of printing, there may be minor discrepancies between your motorcy-
cle and this manual. If there is any question concerning this manual, please consult a Yamaha dealer.
EWA12411
sWARNING
Please read this manual carefully and completely before operating this scooter.
INTRODUCTION
This mark identifies the recommended fuel for this vehicle as specified \
by European regulation (EN228).
Check that gasoline nozzle has the same identifier when fueling.
TIP
E10
SAFETY INFORMATION.....................1-1
Further safe-riding points .................1-5
DESCRIPTION.....................................2-1
Left view ...........................................2-1
Right view .........................................2-3
Controls and instruments .................2-5
INSTRUMENT AND CONTROL
FUNCTIONS........................................3-1
Main switch/steering lock .................3-1
Indicator and warning lights .............3-2
Turn signal indicator lights .............3-2
High beam indicator light .................3-2
Oil level warning light .......................3-3
Speedometer ....................................3-3
Multi-function display .......................3-4
Handlebar switches ..........................3-6
Dimmer switch ..................................3-6
Turn signal switch ............................3-6
Horn switch.......................................3-6
Start switch .......................................3-6
Front brake lever...............................3-6
Rear brake lever................................3-7
Fuel and 2-stroke engine oil
tank caps .......................................3-7
Fuel ...................................................3-8
Catalytic converter............................3-9
2-stroke engine oil ..........................3-10
Kickstarter.......................................3-10
Rider seat........................................3-11Storage compartment.....................3-11
Adjusting the shock absorber
assembly .....................................3-12
Luggage hook .................................3-13
FOR YOUR SAFETY–
PRE-OPERATION CHECKS...............4-1
Pre-operation check list....................4-2
OPERATION AND IMPORTANT
RIDING POINTS..................................5-1
Starting a cold engine ......................5-1
Starting off ........................................5-2
Acceleration and deceleration ..........5-2
Braking..............................................5-3
Tips for reducing fuel consumption..5-3
Engine break-in.................................5-4
Parking ..............................................5-4
PERIODIC MAINTENANCE
AND ADJUSTMENT............................6-1
Periodic maintenance and
lubrication chart ............................6-2
Removing and installing the
cowling and panel .........................6-5
Checking the spark plug ..................6-6
Final transmission oil ........................6-7
Coolant .............................................6-8
Air filter element ................................6-9
Adjusting the carburetor .................6-10Adjusting the throttle cable free
play ..............................................6-10
Tires ................................................6-11
Cast wheels ....................................6-12
Checking the front brake lever
free play .......................................6-13
Adjusting the rear brake lever
free play .......................................6-13
Checking the front brake pads
and rear brake shoes ..................6-14
Checking the brake fluid level ........6-15
Changing the brake fluid ................6-16
Checking and lubricating the
throttle grip and cable .................6-16
Lubricating the front and rear
brake levers .................................6-16
Checking and lubricating the
centerstand .................................6-17
Checking the front fork ...................6-18
Checking the steering.....................6-18
Checking the wheel bearings .........6-19
Battery ............................................6-19
Replacing the fuse ..........................6-20
Replacing the headlight bulb
or a front turn signal light bulb ....6-21
Replacing the tail/brake light bulb
or a rear turn signal light bulb .....6-23
Replacing the license plate light
bulb .............................................6-24
Replacing an auxiliary light bulb.....6-24
Troubleshooting ..............................6-25
TABLE OF CONTENTS
EAU32230
Right view
CS50/CS50M
1
3 24
67
9
85
DESCRIPTION
2-3
2
1. Grab bar (page 5-2)
2. Oil tank cap (page 3-7/3-10)
3. Fuel tank cap (page 3-7)
4. Seat (page 3-11)
5. Battery (page 6-19)6. Fuse (page 6-20)
7. Luggage hook (page 3-13)
8. Centerstand (page 6-17)
9. Passenger footrest
DESCRIPTION
2-4
2
1. Grab bar (page 5-2)
2. Oil tank cap (page 3-7/3-10)
3. Fuel tank cap (page 3-7)
4. Seat (page 3-11)
5. Battery (page 6-19)6. Fuse (page 6-20)
7. Luggage hook (page 3-13)
8. Coolant reservoir cap (page 6-8)
9. Centerstand (page 6-17)
10. Passenger footrest
CS50Z
13 24
678
1095
EAUS1424
Multi-function display
1. Select button
2. Odometer/tripmeter
3. Clock
4. Fuel meter
EWA12312
sWARNING
Be sure to stop the vehicle before
making any setting changes to the
multi-function display. Changing
settings while riding can distract
the operator and increase the risk
of an accident.
The multi-function display is equip-
ped with the following:
●a digital clock
●an odometer (which shows the
total distance traveled)
●a tripmeter (which shows the dis-
tance traveled since it was last
set to zero)
●a fuel gauge
●a self-diagnosis device
●a function button (which selects,
sets and resets various modes of
the multi-function display)
TIP
●Be sure to turn the key to “ ”
before using the button.
●For the U.K. only: The odometer
and tripmeter are displayed in
miles.
To set the clock:
1. Select the odometer and push
the button for at least two
seconds.
2. When the hour digits start flas-
hing, push the button to set the
hours.3. To change the ten-minute digit,
push the button for at least two
seconds.
4. When the ten-minute digit starts
flashing, push the button to set it.
5. To change the one-minute digit,
push the button for at least two
seconds.
km/h
01020304050607080
1
43 2
INSTRUMENT AND CONTROL FUNCTIONS
3-4
3
6. When the one-minute digit starts
flashing, push the button to set it.
7. Push the button for at least two
seconds to start the clock.
TIP
After setting the clock, be sure to
push the button for at least two
seconds before turning the key to
“ ”, otherwise the clock will not be
set.
Odometer and tripmeter modes
Pushing the button switches the dis-
play between the odometer mode
“ODO” and the tripmeter “TRIP” in
the following order:
ODO TRIP ODO
1. Odometer
2. Tripmeter
To reset the tripmeter, select it by
pushing the button, and then push it
again for at least two seconds.
Fuel gauge
The fuel gauge indicates the amount
of fuel in the fuel tank. The display
segments of the fuel gauge disappear
towards “E” (Empty) as the fuel level
decreases. When only one segment is
left near “E”, refuel as soon as possi-
ble.
Self-diagnosis device
This model is equipped with a self-
diagnosis device for the fuel electrical
circuit.
If a problem is detected in the fuel
electrical circuit, all LCD segments ofthe fuel gauge will flash. If this occurs,
have a Yamaha dealer check the vehi-
cle.
PRESS
BUTTON
PRESS
BUTTON
INSTRUMENT AND CONTROL FUNCTIONS
3-5
3
EAU12950
Rear brake lever
1. Rear brake lever
The rear brake lever is located on the
left handlebar grip. To apply the rear
brake, pull this lever toward the hand-
lebar grip.
EAU13202
Fuel and 2-stroke engine oil
tank caps
1. 2-stroke engine oil tank cap
2. Fuel tank cap
The fuel tank cap and the 2-stroke
engine oil tank cap are located under
the seat. (See page 3-11). Fuel tank cap
To remove the fuel tank cap, turn it
counterclockwise, and then pull it off.
To install the fuel tank cap, turn it
clockwise.
2-stroke engine oil tank cap
To remove the 2-stroke engine oil tank
cap, pull it off.
1
2
1
INSTRUMENT AND CONTROL FUNCTIONS
3-7
3
To install the 2-stroke engine oil tank
cap, push it into the oil tank opening.
EWA10141
sWARNING
Make sure that the fuel and 2-stro-
ke engine oil tank caps are properly
installed before riding the scooter.
Leaking fuel is a fire hazard.
EAU13212
Fuel
Make sure there is sufficient gasoline
in the tank.
EWA10881
sWARNING
Gasoline and gasoline vapors are
extremely flammable. To avoid fires
and explosions and to reduce the
risk of injury when refueling, follow
these instructions.
1. Before refueling, turn off the engi-
ne and be sure that no one is sit-
ting on the vehicle. Never refuel
while smoking, or while in the
vicinity of sparks, open flames, or
other sources of ignition such as
the pilot lights of water heaters
and clothes dryers.
2. Do not overfill the fuel tank. Stop
filling when the fuel reaches the
bottom of the filler tube. Because
fuel expands when it heats up,
heat from the engine or the sun
can cause fuel to spill out of the
fuel tank.
1. Fuel tank filler tube
2. Fuel level
3. Wipe up any spilled fuel imme-
diately. NOTICE: Immediately
wipe off spilled fuel with a cle-
an, dry, soft cloth, since fuel
may deteriorate painted surfa-
ces or plastic parts.
[ECA10071]
4. Be sure to securely close the fuel
tank cap.
EWA15151
sWARNING
Gasoline is poisonous and can cau-
se injury or death. Handle gasoline
with care. Never siphon gasoline by
mouth. If you should swallow some
gasoline or inhale a lot of gasoline
vapor, or get some gasoline in your
1
2
ZAUM0020
INSTRUMENT AND CONTROL FUNCTIONS
3-8
3