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
1
SAFETY INFORMATION
1-4
modifications not specifically recom-
mended by Yamaha, even if sold and
installed by a Yamaha dealer.
Aftermarket Parts, Accessories,
and Modifications
While you may find aftermarket pro-
ducts similar in design and quality to
genuine Yamaha accessories, recog-
nize that some aftermarket accesso-
ries or modifications are not suitable
because of potential safety hazards to
you or others. Installing aftermarket
products or having other modifica-
tions performed to your vehicle that
change any of the vehicle’s design or
operation characteristics can put you
and others at greater risk of serious
injury or death. You are responsible
for injuries related to changes in the
vehicle.
Keep the following guidelines in mind,
as well as those provided under “Loa-
ding” when mounting accessories.
●Never install accessories or carry
cargo that would impair the per-
formance of your scooter. Care-
fully inspect the accessory befo-
re using it to make sure that it
does not in any way reduceground clearance or cornering
clearance, limit suspension tra-
vel, steering travel or control ope-
ration, or obscure lights or reflec-
tors.
• Accessories fitted to the hand-
lebar or the front fork area can
create instability due to impro-
per weight distribution or
aerodynamic changes. If
accessories are added to the
handlebar or front fork area,
they must be as lightweight as
possible and should be kept to
a minimum.
• Bulky or large accessories may
seriously affect the stability of
the scooter due to aerodyna-
mic effects. Wind may attempt
to lift the scooter, or the scoo-
ter may become unstable in
cross winds. These accesso-
ries may also cause instability
when passing or being passed
by large vehicles.
• Certain accessories can dis-
place the operator from his or
her normal riding position. This
improper position limits the fre-edom of movement of the ope-
rator and may limit control abi-
lity, therefore, such accesso-
ries are not recommended.
●Use caution when adding electri-
cal accessories. If electrical
accessories exceed the capacity
of the scooter’s electrical system,
an electric failure could result,
which could cause a dangerous
loss of lights or engine power.
Aftermarket Tires and Rims
The tires and rims that came with your
scooter were designed to match the
performance capabilities and to pro-
vide the best combination of hand-
ling, braking, and comfort. Other tires,
rims, sizes, and combinations may
not be appropriate. Refer to page
6-11 for tire specifications and more
information on replacing your tires.
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
EAU12347
Handlebar switches
Left
1. Dimmer switch “ / ”
2. Turn signal switch “ / ”
3. Horn switch “ ”
Right
1. Start switch “ ”
EAU12400
Dimmer switch “ / ”
Set this switch to “ ” for the high
beam and to “ ” for the low beam.
EAU12460
Turn signal switch “ / ”
To signal a right-hand turn, push this
switch to “ ”. To signal a left-hand
turn, push this switch to “ ”. When
released, the switch returns to the
center position. To cancel the turn
signal lights, push the switch in after it
has returned to the center position.
EAU12500
Horn switch “ ”
Press this switch to sound the horn.
EAUM1132
Start switch “ ”
Push this switch while applying the
front or rear brake to crank the engine
with the starter. See page 5-1 for star-
ting instructions prior to starting the
engine.
EAU12900
Front brake lever
1. Front brake lever
The front brake lever is located on the
right handlebar grip. To apply the
front brake, pull this lever toward the
handlebar grip.
1
1
1
2
3
INSTRUMENT AND CONTROL FUNCTIONS
3-6
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
FOR YOUR SAFETY – PRE-OPERATION CHECKS
4-3
4
ITEM CHECKS PAGE
Brake levers• Make sure that operation is smooth.
• Lubricate lever pivoting points if necessary.6-16
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.–
EAU16793
BrakingEWA10300
sWARNING
●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 such
areas 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.
1. Close the throttle completely.
2. Apply both front and rear brakes
simultaneously while gradually
increasing the pressure.Front
Rear
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
PERIODIC MAINTENANCE AND ADJUSTMENT
6-4
6
ODOMETER READING
CHECK OR ANNUAL
NO. ITEM MAINTENANCE JOB
1000 km 6000 km 12000 km 18000 km 24000 kmCHECK
(600 mi) (3500 mi) (7000 mi) (10500 mi) (14000 mi)
• Check coolant level and vehicle
19 *Cooling system
for coolant leakage.√√√ √√(CS50Z)
• Change. Every 3 years
20Final transmission • Check vehicle for oil leakage.
oil• Change.√√ √√ √ √
21 *V-belt• Replace. Every 10000 km (6000 mi)
22 *Front and rear
brake switches• Check operation.√√ √√ √ √
23Moving parts
and cables• Lubricate.√√√ √√
• Check operation and free play.
Throttle grip• Adjust the throttle cable free play
24 * if necessary.√√√ √√
housing and cable
• Lubricate the throttle grip
housing and cable.
25 *Lights, signals and • Check operation.
switches• Adjust headlight beam.√√ √√ √ √
EAUM2070
TIP
●The air filter needs more frequent service if you are riding in unusually wet or dusty areas.
●Hydraulic brake service
• Regularly check and, if necessary, correct the brake fluid level.
• Every two years change the brake fluid.
• Replace the brake hoses every four years and if cracked or damaged.