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
DESCRIPTION
2-5
2
1. Rear brake lever (page 3-7)
2. Left handlebar switches (page 3-6)
3. Speedometer (page 3-3)
4. Multi-function display (page 3-4)5. Main switch/steering lock (page 3-1)
6. Right handlebar switch (page 3-6)
7. Throttle grip (page 6-10)
8. Front brake lever (page 3-6)
EAU32240
Controls and instruments
CS50/CS50M/CS50Z
1
234
5
678
INSTRUMENT AND CONTROL FUNCTIONS
3-1
3
EAU10460
Main switch/steering lock
The main switch/steering lock con-
trols the ignition and lighting systems,
and is used to lock the steering. The
various positions are described
below.
EAU10640
“” ON
All electrical circuits are supplied with
power, and the engine can be started.
The key cannot be removed.
TIP
The headlight, meter lighting and tai-
llight come on automatically when the
engine is started.
EAU10661
“” OFF
All electrical systems are off. The key
can be removed.
EWA10061
sWARNING
Never turn the key to “ ” or “ ”
while the vehicle is moving. Other-
wise the electrical systems will be
switched off, which may result in
loss of control or an accident.
EAU10670
The 2-stroke engine oil level warning
light should come on. (See page 3-2).
EAU10681
“ ” LOCK
The steering is locked, and all electri-
cal systems are off. The key can be
removed.T
o lock the steering
1. Push.
2. Turn.
1. Turn the handlebars all the way to
the left.
2. Push the key in from the “ ”
position, and then turn it to “ ”
while still pushing it.
3. Remove the key.
To unlock the steering
1. Push.
2. Turn.
1. Push the key in, and then turn it
to “ ” while still pushing it.
EAU11003
Indicator and warning lights
1. Left turn signal indicator light “ ”
2. Oil level warning light “ ”
3. High beam indicator light “ ”
4. Right turn signal indicator light “ ”1. Left turn signal indicator light “ ”
2. Coolant temperature warning light “ ”
3. Oil level warning light “ ”
4. High beam indicator light “ ”
5. Right turn signal indicator light “ ”
EAU11030
Turn signal indicator lights “ ”
and “ ”
The corresponding indicator light flas-
hes when the turn signal switch is
pushed to the left or right.
EAU11080
High beam indicator light “ ”
This indicator light comes on when
the high beam of the headlight is swit-
ched on.
km/h
01020304050607080
14
3 25
CS50Z
km/h
01020304050607080
143 2
CS50/CS50M1
2
INSTRUMENT AND CONTROL FUNCTIONS
3-2
3
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
EAU14160
Rider seat
To open the rider 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.
TIP
Do not push inward when turning the
key.
3. Fold the rider seat up.
1. Seat
To close the rider seat
1. Fold the rider 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.
TIP
Make sure that the seat is properly
secured before riding.
EAU14510
Storage compartment
1. Storage compartment
There is a storage compartment
under the seat. (See page 3-11).
EWA10960
sWARNING
●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.
1
1
1
INSTRUMENT AND CONTROL FUNCTIONS
3-11
3