2000 YAMAHA CYGNUS 125 length

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Q QQ Q
Q SAFETY INFORMATION
tric failure could result, which could
cause a dangerous loss of lights or
engine power.
Gasoline and exhaust gas
8GASOLINE IS HIGHLY FLAM-
MABLE:
9Always turn the engine off
when refueling.
9Take care not to spill any
gasoline on the engine or
exhaust system when refueling.
9Never refuel while smoking or
in the vicinity of an open flame.
8Never start the engine or let it run
for any length of time in a closed
area. The exhaust fumes are poi-
sonous and may cause loss of con-
sciousness and death within a
short time. Always operate your
scooter in an area that has adequate
ventilation.
8Always turn the engine off before
leaving the scooter unattended and
remove the key from the main
switch. When parking the scooter,
note the following:
9The engine and exhaustsystem may be hot, therefore,
park the scooter in a place
where pedestrians or children
are not likely to touch these hot
areas.
9Do not park the scooter on a
slope or soft ground, otherwise
it may fall over.
9Do not park the scooter near a
flammable source (e.g., a
kerosene heater, or near an
open flame), otherwise it could
catch fire.
8If you should swallow any gasoline,
inhale a lot of gasoline vapor, or
allow gasoline to get into your eyes,
see your doctor immediately. If any
gasoline spills on your skin or cloth-
ing, immediately wash the affected
area with soap and water and
change your clothes.
EAU10371
Further safe-riding points8Be sure to signal clearly when mak-
ing turns.ZAUM00**Turn leftZAUM00**Turn right
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OPERATION AND IMPORTANT RIDING POINTS
EAU15980
EWA10870
w8 88 8
8Become thoroughly familiar with
all operating controls and their
functions before riding. Consult
a Yamaha dealer regarding any
control or function that you do
not thoroughly understand.
8 88 8
8Never start the engine or operate
it in a closed area for any length
of time. Exhaust fumes are poi-
sonous, and inhaling them can
cause loss of consciousness and
death within a short time. Always
make sure that there is adequate
ventilation.
8 88 8
8For safety, always start the engine
with the centerstand down.EAU15940
OPERATION AND IMPORTANT RIDING POINTS
EAUT1100
Starting a cold engine
ECA10250
cCSee page 5-3 for engine break-in in-
structions prior to operating the ve-
hicle for the first time.1. Turn the key to “ON”.
2. Close the throttle grip completely.
3. Start the engine by pushing the
star t switch or by kicking the
kickstarter, while applying the front
or rear brake.NOTE:
If the engine fails to start by pushing
the start switch, release the switch, wait
a few seconds, and then try again. Each
starting attempt should be as short as
possible to preserve the battery. Do not
crank the engine more than 5 seconds
on any one attempt. If the engine does
not start with the starter motor, try us-
ing the kickstarter.
ECA11040
cCFor maximum engine life, never ac-
celerate hard when the engine is cold!
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OPERATION AND IMPORTANT RIDING POINTS
EAU16830
Engine break-inThere is never a more important period
in the life of your engine than the period
between 0 and 1000 km (600 mi). For
this reason, you should read the follow-
ing material carefully.
Since the engine is brand new, do not
put an excessive load on it for the first
1000 km (600 mi). The various parts in
the engine wear and polish themselves
to the correct operating clearances. Dur-
ing this period, prolonged full-throttle
operation or any condition that might
result in engine overheating must be
avoided.
EAU16820
Tips for reducing fuel con-
sumptionFuel consumption depends largely on
your riding style. Consider the following
tips to reduce fuel consumption:
8Avoid high engine speeds during
acceleration.
8Avoid high engine speeds with no
load on the engine.
8Turn 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 crossings).
EAU16950
0~150 km (0~90 mi)
Avoid prolonged operation above 1/3
throttle.
After every hour of operation, stop the
engine, and then let it cool for five to
ten minutes.
Vary the engine speed from time to time.
Do not operate the engine at one set
throttle position.150~500 km (90~300 mi)
Avoid prolonged operation above 1/2
throttle.
Rev the engine freely through the gears,
but do not use full throttle at any time.
500~1000 km (300~600 mi)
Avoid prolonged operation above 3/4
throttle.
ECA10350
cCAfter 1000 km (600 mi) of operation,
the engine oil must be changed and
the oil strainer cleaned.1000 km (600 mi) and beyond
Avoid prolonged full-throttle operation.
Vary the speed occasionally.
ECA10270
cCIf any engine trouble should occur
during the engine break-in period,
immediately have a Yamaha dealer
check the vehicle.
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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
EAU26335
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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