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
charging it in an enclosed spa-
ce.
●KEEP THIS AND ALL BATTE-
RIES OUT OF THE REACH OF
CHILDREN.
To charge the battery
1. Have a Yamaha dealer charge the
battery as soon as possible if it
seems to have discharged. Keep
in mind that the battery tends to
discharge more quickly if the
vehicle is equipped with optional
electrical accessories.
ECA16520
NOTICE
To charge a VRLA (Valve Regulated
Lead Acid) battery, a special (cons-
tant-voltage) battery charger is
required. Using a conventional bat-
tery charger will damage the bat-
tery. If you do not have access to a
constant-voltage battery charger,
have a Yamaha dealer charge your
battery.
To store the battery
1. If the vehicle will not be used for
more than one month, remove
the battery, fully charge it, and
then place it in a cool, dry place.
NOTICE: When removing the
battery, be sure the key is
turned to “ ” , then discon-
nect the negative lead before
disconnecting the positive
lead.
[ECA16302]
2. If the battery will be stored for
more than two months, check it
at least once a month and fully
charge it if necessary.
3. Fully charge the battery before
installation.
4. After installation, make sure that
the battery leads are properly
connected to the battery termi-
nals.
ECA16530
NOTICE
Always keep the battery charged.
Storing a discharged battery can
cause permanent battery damage.
EAU23503
Replacing the fuse
1. Main fuse
The fuse holder is located behind
panel A. (See page 6-5).
If the fuse is blown, replace it as
follows.
1. Turn the key to “ ” and turn off
all electrical circuits.
2. Remove the blown fuse, and then
install a new fuse of the specified
amperage. WARNING! Do not
use a fuse of a higher ampera-
ge rating than recommended
to avoid causing extensive
damage to the electrical sys-
tem and possibly a fire.
[EWA15131]
1
PERIODIC MAINTENANCE AND ADJUSTMENT
6-20
6
3. Turn the key to “ ” and turn on
the electrical circuits to check if
the devices operate.
4. If the fuse immediately blows
again, have a Yamaha dealer
check the electrical system.
EAUS1433
Replacing the headlight bulb
or a front turn signal light
bulb
If a bulb burns out, replace it as
follows.
ECA10670
NOTICE
It is advisable to have a Yamaha
dealer perform this job.
Headlight bulb
1. Remove cowling A. (See page
6-5).
2. Disconnect the headlight leads,
and then unhook the headlight
bulb retaining wire as shown.
1. Headlight lead connector
2. Unhook
3. Remove the bulb holder by
pulling it and then, remove the
burnt-out bulb by turning it coun-
terclockwise.
1. Headlight bulb cover
2. Headlight bulb
4. Insert a new headlight bulb into
the bulb holder and turn it clock-
wise.
1
2
GYB
1
2
Specified fuse:
7.5 A
PERIODIC MAINTENANCE AND ADJUSTMENT
6-21
6
Oil level warning light:
LED X 1
Turn signal indicator light:
12 V, 1.2 W x 2
Coolant temperature warning light (CS50Z):
LED x 1
Fuse:Main fuse:
7.5 A
SPECIFICATIONS
8-3
8
2-stroke engine oil ...................................3-10
AAcceleration and deceleration ...................5-2
Air filter element .........................................6-9
Auxiliary light bulb, replacing ...................6-24
BBattery......................................................6-19
Brake fluid level, checking .......................6-15
Brake fluid, changing ...............................6-16
Brake lever, front ........................................3-6
Brake lever, rear .........................................3-7
Brake levers, lubricating ..........................6-16
Brake pads and shoes, checking ............6-14
Braking .......................................................5-3
CCarburetor,adjusting.................................6-10
Care............................................................7-1
Catalytic converter .....................................3-9
Centerstand, checking and lubricating ....6-17
Coolant.......................................................6-8
Cowling and panel, removing
and installing............................................6-5
DDimmer switch ...........................................3-6
EEngine break-in ..........................................5-4
FFinal transmission oil .................................6-7
Front brake lever free play, checking.......6-13
Front fork, checking .................................6-18
Fuel ............................................................3-8
Fuel and 2-stroke engine oil tank caps .....3-7
Fuel consumption, tips for reducing ..........5-3
Fuse, replacing.........................................6-20
HHandlebar switches ...................................3-6
Headlight and front turn signal light
bulb, replacing .......................................6-21
High beam indicator light...........................3-2
Horn switch ................................................3-6
IIdentification numbers ...............................9-1
Indicator and warning lights ......................3-2
KKey identification number ..........................9-1
Kickstarter ................................................3-10
LLicense plate light bulb, replacing ...........6-24
Luggage hook ..........................................3-13
M
Main switch/steering lock ..........................3-1
Matte color, caution ...................................7-1
Model label ................................................9-2
Multi-function display ................................3-4
OOil level warning light .................................3-3
PParking .......................................................5-4
Part locations .............................................1-5
Periodic maintenance and lubrication
chart .........................................................6-2
Pre-operation check list .............................4-2
RRear brake lever free play, adjusting .......6-13
Rider seat .................................................3-11
SSafe-riding points.......................................1-5
Safety information ......................................1-1Shock absorber assembly, adjusting.......3-12
Spark plug, checking .................................6-6
Specifications.............................................7-3
Speedometer .............................................3-3
Start switch ................................................3-6
Starting a cold engine ................................5-1
Starting off .................................................5-2
Steering, checking ...................................6-18
Storage.......................................................7-3
Storage compartment ..............................3-11
TTail/brake light bulb or rear turn signal
light bulb, replacing ...............................6-23
Throttle cable free play, adjusting ............6-10
Throttle grip and cable, checking and
lubricating ..............................................6-16
Tires .........................................................6-11
Troubleshooting .......................................6-25
Troubleshooting charts ............................6-26
Turn signal indicator lights .........................3-2
Turn signal switch ......................................3-6
VVehicle identification number .....................9-1
WWheel bearings, checking........................6-19
Wheels .....................................................6-12
INDEX