Page 59 of 76
5. Place the bulb holder in its origi-
nal position, and then secure it
with the retaining wire as shown.
6. Connect the headlight leads and
install the cowling.
7. Have a Yamaha dealer adjust the
headlight beam if necessary.
Left turn signal light bulb
1. Remove cowling A. (See page
6-5).
2. Remove the socket (together
with the bulb) by turning it coun-
terclockwise.1. Socket
3. Remove the burnt-out bulb from
the socket by pulling it out.
1. Turn signal light bulb
4. Insert a new bulb into the socket.
5. Install the socket by turning it
clockwise.
6. Install the cowling.Right turn signal light bulb
1. Remove cowling A. (See page
6-5).
2. Remove the socket (together
with the bulb) by turning it clock-
wise.
1. Socket
3. Remove the burnt-out bulb from
the socket by pulling it out.
4. Insert a new bulb into the socket.
5. Install the socket by turning
counterclockwise.
6. Install the cowling.
GGYYBB
1
1
GGYYBB
1
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PERIODIC MAINTENANCE AND ADJUSTMENT
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6
Page 60 of 76
EAUT1923
Replacing the tail/brake light
bulb or a rear turn signal
light bulb
1. Tail/brake light lens
Tail/brake light bulb
1. Remove the tail/brake light lens
by removing the screws.
1. Screw
2. Tail/brake light lens
2. Remove the burnt out bulb by
pushing it in and turning it coun-
terclockwise.
1. Tail/brake light bulb
3. Insert a new bulb into the socket,
push it in, and then turn it clock-
wise until it stops.
4. Install the lens by installing the
screws.
Rear turn signal light bulb
1. Remove the tail/brake light lens
by removing the screws.
1. Screw
2. Turn signal light lens
2. Remove the turn signal light lens
by removing the screw.
1
2
1
1
2
1
PERIODIC MAINTENANCE AND ADJUSTMENT
6-23
6
Page 61 of 76

1. Turn signal light bulb
3. Remove the burnt out bulb by
pushing it in and turning it coun-
terclockwise.
4. Insert a new bulb into the socket,
push it in, and then turn it clock-
wise until it stops.
5. Install the turn signal light lens by
installing the screw.
6. Install the tail/brake light lens by
installing the screws. NOTICE:
Do not overtighten the screws,
otherwise the lens may break.
[ECA10681]
EAUS1151
Replacing the license plate
light bulb (Depends on
models)
1. Remove the lens by removing the
screw.
1. Screw 2. License plate light bulb socket
2. Remove the burnt out bulb by
pulling it out.
3. Insert a new bulb into the socket.
4. Install the lens by installing the
screw. NOTICE: Do not over-
tighten the screw, otherwise
the lens may break. [ECA11191]
EAUS1412
Replacing an auxiliary light
bulb
This model is equipped with two auxi-
liary lights. If an auxiliary light bulb
burns out, replace it as follows.
1. Remove cowling A. (See page
6-5).
2. Remove the auxiliary light socket
(together with the bulb) by pulling
it out.
1. Auxiliary light bulb socket
3. Remove the burnt-out bulb by
pulling it out.
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1
21
1
PERIODIC MAINTENANCE AND ADJUSTMENT
6-24
6
Page 62 of 76

1. Auxiliary light bulb
4. Insert a new bulb into the socket.
5. Install the auxiliary light socket
(together with the bulb) by pus-
hing it in.
6. Install the cowling.
EAU25881
Troubleshooting
Although Yamaha scooters receive a
thorough inspection before shipment
from the factory, trouble may occur
during operation. Any problem in the
fuel, compression, or ignition sys-
tems, for example, can cause poor
starting and loss of power.
The following troubleshooting charts
represent quick and easy procedures
for checking these vital systems your-
self. However, should your scooter
require any repair, take it to a Yamaha
dealer, whose skilled technicians
have the necessary tools, experience,
and know-how to service the scooter
properly.
Use only genuine Yamaha replace-
ment parts. Imitation parts may look
like Yamaha parts, but they are often
inferior, have a shorter service life and
can lead to expensive repair bills.
EWA15141
sWARNING
When checking the fuel system, do
not smoke, and make sure there
are no open flames or sparks in the
area, including pilot lights from
water heaters or furnaces. Gasoli-
ne or gasoline vapors can ignite or
explode, causing severe injury or
property damage.
1
PERIODIC MAINTENANCE AND ADJUSTMENT
6-25
6
Page 65 of 76

EAU37833
Matte color cautionECA15192
NOTICE
Some models are equipped with
matte colored finished parts. Be
sure to consult a Yamaha dealer for
advice on what products to use
before cleaning the vehicle.
Using a brush, harsh chemical pro-
ducts or cleaning compounds
when cleaning these parts will
scratch or damage their surface.
Wax also should not be applied to
any matte colored finished parts.
EAU26092
Care
While the open design of a scooter
reveals the attractiveness of the tech-
nology, it also makes it more vulnera-
ble. Rust and corrosion can develop
even if high-quality components are
used. A rusty exhaust pipe may go
unnoticed on a car, however, it
detracts from the overall appearance
of a scooter. Frequent and proper
care does not only comply with the
terms of the warranty, but it will also
keep your scooter looking good,
extend its life and optimize its perfor-
mance.
Before cleaning
1. Cover the muffler outlet with a
plastic bag after the engine has
cooled down.
2. Make sure that all caps and
covers as well as all electrical
couplers and connectors, inclu-
ding the spark plug cap, are
tightly installed.
3. Remove extremely stubborn dirt,
like oil burnt onto the crankcase,
with a degreasing agent and a
brush, but never apply such pro-ducts onto seals, gaskets and
wheel axles. Always rinse the dirt
and degreaser off with water.
Cleaning
ECA10781
NOTICE
●Avoid using strong acidic whe-
el cleaners, especially on spo-
ked wheels. If such products
are used on hard-to-remove
dirt, do not leave the cleaner on
the affected area any longer
than instructed. Also, tho-
roughly rinse the area off with
water, immediately dry it, and
then apply a corrosion protec-
tion spray.
●Improper cleaning can damage
plastic parts such as cowlings,
panels, windshields, headlight
lenses, meter lenses, etc. Use
only a soft, clean cloth or spon-
ge with mild detergent and
water to clean plastic.
●Do not use any harsh chemical
products on plastic parts. Be
sure to avoid using cloths or
sponges which have been in
contact with strong or abrasive
SCOOTER CARE AND STORAGE
7-1
7
Page 66 of 76

cleaning products, solvent or
thinner, fuel (gasoline), rust
removers or inhibitors, brake
fluid, antifreeze or electrolyte.
●Do not use high-pressure was-
hers or steam-jet cleaners sin-
ce they cause water seepage
and deterioration in the follo-
wing areas: seals (of wheel and
swingarm bearings, fork and
brakes), electric components
(couplers, connectors, instru-
ments, switches and lights),
breather hoses and vents.
●For scooters equipped with a
windshield: Do not use strong
cleaners or hard sponges as
they will cause dulling or scrat-
ching. Some cleaning com-
pounds for plastic may leave
scratches on the windshield.
Test the product on a small hid-
den part of the windshield to
make sure that it does not lea-
ve any marks. If the windshield
is scratched, use a quality
plastic polishing compound
after washing.
After normal use
1. Remove dirt with warm water, a
mild detergent, and a soft, clean
sponge, and then rinse tho-
roughly with clean water. Use a
toothbrush or bottlebrush for
hard-to-reach areas. Stubborn
dirt and insects will come off
more easily if the area is covered
with a wet cloth for a few minutes
before cleaning.
After riding in the rain, near the sea or
on salt-sprayed roads
1. Since sea salt or salt sprayed on
the roads during winter are extre-
mely corrosive in combination
with water, carry out the following
steps after each ride in the rain,
near the sea or on salt-sprayed
roads.
TIP
Salt sprayed on roads in the winter
may remain well into spring.
1. Clean the scooter with cold water
and a mild detergent after the
engine has cooled down. NOTI-
CE:Do not use warm watersince it increases the corrosive
action of the salt.
[ECA10791]
2. Apply a corrosion protection
spray on all metal, including
chrome- and nickel-plated, surfa-
ces to prevent corrosion.
After cleaning
1. Dry the scooter with a chamois or
an absorbing cloth.
2. Use a chrome polish to shine
chrome, aluminum and stainless-
steel parts, including the exhaust
system. (Even the thermally indu-
ced discoloring of stainless-steel
exhaust systems can be removed
through polishing.)
3. To prevent corrosion, it is recom-
mended to apply a corrosion pro-
tection spray on all metal, inclu-
ding chrome- and nickel-plated,
surfaces.
4. Use spray oil as a universal clea-
ner to remove any remaining dirt.
5. Touch up minor paint damage
caused by stones, etc.
6. Wax all painted surfaces.
7. Let the scooter dry completely
before storing or covering it.
SCOOTER CARE AND STORAGE
7-2
7
Page 70 of 76

Size:
110/70-12 47L
Manufacturer/model:
CHENG SHIN TIRE / C922
Rear tire:
Type:
Tubeless
Size:
120/70-12 51L 130/70-12 56L
Manufacturer/model:
CHENG SHIN TIRE / C922
Loading:Maximum load:
CS50/CS50M: 169 kg (372 lb)
CS50Z: 166 kg (366 lb)
Tire air pressure (measured on cold
tires):
Loading condition:
0–90 kg (0–198 lb)
Front:
175 kPa (1.75 kgf/cm
2, 25 psi,
1.75 bar)
Rear:
200 kPa (2.00 kgf/cm
2, 29 psi,
2.00 bar)
90 kg (198 lb) - maximum load
Front:
175 kPa (1.75 kgf/cm
2, 25 psi,
1.75 bar)
Rear:
225 kPa (2.25 kgf/cm
2, 33 psi,
2.25 bar)
Front wheel:Wheel type:
Cast wheel
Rim size:
MT 2.75X12
Rear wheel:Wheel type:
Cast wheel
Rim size:
MT 3.00X12
Front brake:Type:
Single disc brake
Operation:
Right hand operation
Recommended fluid:
DOT 4
Rear brake:Type:
Drum brake
Operation:
Left hand operation
Front suspension:Type:
Telescopic fork
Spring/shock absorber type:
Coil spring/oil damper
Wheel travel:
70.0 mm (2.76 in)
Rear suspension:Type:
Unit swingSpring/shock absorber type:
Coil spring/oil damper
Coil spring/gas-oil damper (depens on
models)
Wheel travel:
60.0 mm (2.36 in)
Electrical system:Ignition system:
CDI
Charging system:
Flywheel magneto
Battery:Model:
GT4L-BS
Voltage, capacity:
12 V, 4.0 Ah
Headlight:Bulb type:
Incandescence
Bulb voltage, wattage x quantity:Headlight:
12 V, 35 W/35.0 W x 1
Tail/brake light:
12 V, 21.0 W/5.0 W x 1
Front turn signal light:
12 V, 10.0 W x 2
Rear turn signal light:
12 V, 10.0 W x 2
Auxiliary light:
12 V, 5.0 W x 2
Meter lighting:
12 V, 1.2 W x 2
High beam indicator light:
12 V, 1.2 W x 1
SPECIFICATIONS
8-2
8
Page 71 of 76
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