2005 YAMAHA CYGNUS 125 ECO mode

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INSTRUMENT AND CONTROL FUNCTIONS
EAU13210
FuelZAUM00**
1
1. Fuel levelMake sure that there is sufficient fuel in
the tank. Fill the fuel tank to the bottom
of the filler tube as shown.
EWA10880
w8 88 8
8Do not overfill the fuel tank, oth-
erwise it may overflow when the
fuel warms up and expands.
8 88 8
8Avoid spilling fuel on the hot
engine.
ECA10070
cCImmediately wipe off spilled fuel with
a clean, dry, soft cloth, since fuel maydeteriorate painted surfaces or plas-
tic parts.
EAU33520
Recommended fuel:
REGULAR UNLEADED GASO-
LINE ONLY
Fuel tank capacity:
7.1 L (1.86 US gal) (1.55 Imp.gal)
ECA11400
cCUse only unleaded gasoline. The use
of leaded gasoline will cause severe
damage to internal engine parts, such
as the valves and piston rings, as well
as to the exhaust system.Your Yamaha engine has been designed
to use regular unleaded gasoline with a
research octane number of 91 or higher.
If knocking (or pinging) occurs, use a
gasoline of a different brand or premium
unleaded fuel. Use of unleaded fuel will
extend spark plug life and reduce main-
tenance costs.
EAU13431
Catalytic converterThis model is equipped with a catalytic
converter in the exhaust system.
EWA10860
wThe exhaust system is hot after op-
eration. Make sure that the exhaust
system has cooled down before do-
ing any maintenance work.
ECA10700
cCThe following precautions must be
observed to prevent a fire hazard or
other damages.
8 88 8
8Use only unleaded gasoline. The
use of leaded gasoline will cause
unrepairable damage to the cata-
lytic converter.
8 88 8
8Never park the vehicle near pos-
sible fire hazards such as grass
or other materials that easily
burn.
8 88 8
8Do not allow the engine to idle
too long.
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PERIODIC MAINTENANCE AND MINOR REPAIR
Specified fuses:
Main fuse:
30 A
Headlight fuse:
15 A
Signaling system fuse:
15 A
Ignition fuse:
7.5 A
Carburetor heater fuse:
7.5 A
ECA10640
cCDo not use a fuse of a higher amper-
age rating than recommended to
avoid causing extensive damage to
the electrical system and possibly a
fire.3. Turn the key to “ON” and turn on
the electrical circuit in question to
check if the device operates.
4. If the fuse immediately blows again,
have a Yamaha dealer check the
electrical system.
EAU23710
Replacing a headlight bulbThis model is equipped with quartz bulb
headlights. If a headlight bulb burns out,
replace it as follows.
1. Place the vehicle on the
centerstand.
2. Remove panel B. (See page 6-6.)
3. Disconnect the headlight coupler,
and then remove the bulb cover.ZAUM00**
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1. Bulb cover4. Unhook the headlight bulb holder,
and then remove the defective bulb.
ZAUM00**
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1. Headlight bulb holder
EWA10790
wHeadlight bulbs get very hot. There-
fore, keep flammable products away
from a lit headlight bulb, and do not
touch the bulb until it has cooled
down.5. Place a new headlight bulb into po-
sition, and then secure it with the
bulb holder.
ECA10660
cCDo not touch the glass part of the
headlight bulb to keep it free from oil,
otherwise the transparency of the
glass, the luminosity of the bulb, and
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SPECIFICATIONS
-20˚ -10˚ 0˚ 10˚ 20˚ 30˚ 40˚ 50˚
SAE 10W-30SAE 10W-40
SAE 20W-40SAE 20W-50
ZAUM00**
EAU26320
SPECIFICATIONS
EAU26339
DimensionsOverall length
1855 mm
Overall width
685 mm
Overall height
1110 mm
Seat height
770 mm
Wheelbase
1295 mm
Ground clearance
110 mm
Minimum turning radius
1900 mmWeightWith oil and fuel
121.0 kgEngineEngine type
Forced air cooled 4-stroke, SOHC
Cylinder arrangement
Forward-inclined single cylinder
Displacement
124.0 cm
3
Bore & stroke
52.4 x 57.9 mm
Compression ratio
10.00 :1
Starting system
Electric starter and kickstarter
Lubrication system
Wet sump
Engine oilType
SAE20W40
Recommended engine oil grade
API service SE, SF, SG type or higher
Engine oil quantity
Periodic oil change
0.90 L
Without oil filter element removal
0.90 LFinal transmission oilType
SAE10W30 type SE motor oil
Quantity
0.13 LAir filterAir filter element
Oil-coated paper elementFuelRecommended fuel
Regular unleaded gasoline only
Fuel tank capacity
7.1 L
CarburetorManufacturer
Taiwan KEI HIN
Type x quantity
CVK24 x 1Spark plug(s)Manufacturer/model
NGK / CR7E
Spark plug gap
0.6-0.7 mmClutchClutch type
Dry, centrifugal automaticTransmissionPrimary reduction system
Helical gear
Primary reduction ratio
38/13 (2.923)
Secondary reduction system
Helical gear
Secondary reduction ratio
40 / 12 (3.333)
Transmission type
V-belt automatic
Operation
Centrifugal automatic typeChassisFrame type
Steel tube underbone
Caster angle
27.00 degree
Trail
90.0 mm
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SPECIFICATIONSFront tireType
Tubeless
Size
110 / 70-12 47L
Manufacturer/model
CHENG SHIN / C-922N-47LRear tireType
Tubeless
Size
120 / 70-12 58L
Manufacturer/model
CHENG SHIN / C-6007-58L
Maximum load
170 kg
(Total weight of rider, passenger, cargo and ac-
cessories)Tire air pressure (measured on cold tires)Loading condition
0-90 kg
Front
175 kPa
Rear
200 kPa
Loading condition
90-170 kg
Front
200 kPa
Rear
225 kPaFront wheelWheel type
Cast wheel
Rim size
12xMT2.75
Rear wheelWheel type
Cast wheel
Rim size
12xMT3.00Front brakeType
Single disc brake
Operation
Right hand operation
Recommended fluid
DOT 4Rear brakeType
Drum brake
Operation
Left hand operationFront suspensionType
Telescopic fork
Spring/shock absorber type
Coil spring/oil damper
Wheel travel
90.0 mmRear suspensionType
Unit swing
Spring/shock absorber type
Coil spring/oil damper
Wheel travel
95.0 mm
Electrical systemIgnition system
C.D.I.
Charging system
A.C. magnetoBatteryModel
YTX7A-BS
Voltage, capacity
12 V, 6.0 AhHeadlightBulb type
Halogen bulbBulb voltage, wattage x quantityHeadlight
12 V, 60 W/55.0 W x 1
Tail/brake light
12 V, 5.0/21.0 W x 1
Front turn signal light
12 V, 10.0 W x 2
Rear turn signal light
12 V, 16.0 W x 2
Auxiliary light
12 V, 5.0 W x 1
Meter lighting
12 V, 1.7 W x 3
High beam indicator light
12 V, 1.7 W x 1
Turn signal indicator light
12 V, 3.4 W x 1
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CONSUMER INFORMATION
EAU26351
Identification numbersRecord the key identification number,
vehicle identification number and model
label information in the spaces provided
below for assistance when ordering
spare parts from a Yamaha dealer or for
reference in case the vehicle is stolen.
KEY IDENTIFICATION NUMBER:VEHICLE IDENTIFICATION NUMBER:MODEL LABEL INFORMATION:
EAU26410
Vehicle identification numberZAUM00**
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1. Vehicle identification numberThe vehicle identification number is
stamped into the frame.NOTE:
The vehicle identification number is used
to identify your motorcycle and may be
used to register your motorcycle with
the licensing authority in your area.
CONSUMER INFORMATION
EAU26381
Key identification numberZAUM00**
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1. Key identification numberThe key identification number is
stamped into the key tag.
Record this number in the space pro-
vided and use it for reference when or-
dering a new key.
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CONSUMER INFORMATION
EAUT1440
Model labelZAUM00**
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1. Model labelThe model label is affixed to the inside
of the storage compartment. (See page
3-8.) Record the information on this la-
bel in the space provided. This informa-
tion will be needed when ordering spare
parts from a Yamaha dealer.
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