2012 YAMAHA CYGNUS 125 oil type

1
2
3
4
5
6
7
8
9
6-10
EAU1722A
PERIODIC MAINTENANCE AND ADJUSTMENT
EAUT1352
Engine oil and oil strainerThe engine oil level should be
checked before each ride. In addition,
the oil must be changed and the oil
strainer cleaned at the intervals speci-
fied in the periodic maintenance and
lubrication chart. The engine oil must
also be changed at the initial 1000 km
(600 mi) and when the oil change indi-
cator fl ashes. The oil change tripmeter
must be reset after the initial 1000 km
(600 mi). (See page 3-3 for reset pro-
cedures.)
To check the engine oil level
1. Place the vehicle on the center-
stand. A slight tilt to the side can
result in a false reading.
2. Start the engine, warm it up for
several minutes, and then turn it
off.
3. Wait a few minutes until the oil
settles, remove the oil filler cap,
wipe the dipstick clean, insert it
back into the oil fi ller hole (without
screwing it in), and then remove it
again to check the oil level.
TIPThe engine oil should be between the
minimum and maximum level marks.ZAUM00**
12
1. Maximum level mark
2. Minimum level mark4. If the engine oil is below the mini-
mum level mark, add suffi cient oil
of the recommended type to raise
it to the correct level.
5. Insert the dipstick into the oil fi ller
hole, and then tighten the oil fi ller
cap.
To change the engine oil and clean
the oil strainer
1. Start the engine, warm it up for
several minutes, and then turn it off.
2. Place an oil pan under the engine
to collect the used oil.
3. Remove the engine oil filler cap
and drain bolts to drain the oil
from the crankcase.
NOTICE:

When removing the engine oil
drain bolt, the O-ring, spring,
and oil strainer will fall out.
Take care not to lose these
parts.
[ECA10411]
ZAUM00**
1
1. Oil fi ller cap
4P9-F8199-E5_CS.indd 6-104P9-F8199-E5_CS.indd 6-10
2011/09/06 14:18:402011/09/06 14:18:40
Process BlackProcess Black

1
2
3
4
5
6
7
8
9
6-14
EAU1722A
PERIODIC MAINTENANCE AND ADJUSTMENT
Cleaning the air lter check hoses
1. Check the hoses on the front and
rear side of the air filter case for
accumulated dirt or water.ZAUM00**
1
1
1. Air fi lter check hose2. If dirt or water is visible, remove
the hoses, clean them, and then
install them.Cleaning the V-belt case air filter
element
1. Remove the V-belt air filter case
cover by removing the screws.
ZAUM00**
1
1. V-belt air fi lter case cover2. Remove the fi lter element holder
by removing the screw.ZAUM00**
1
1. Air fi lter element holder
3. Pull the air fi lter element out, and
then clean it with solvent. After
cleaning, remove the remain-
ing solvent by squeezing the
element. WARNING! Use only a
dedicated parts cleaning sol-
vent. To avoid the risk of re or
explosion, do not use gasoline
or solvents with a low flash
point.
[EWA10431]
NOTICE:
To avoid
damaging the air lter element,
handle it gently and carefully,
and do not twist it.
[ECA10521]
ZAUM00**
1
1. V-belt case air fi lter element4. Apply oil of the recommended
type to the entire surface of
the sponge material, and then
squeeze the excess oil out.
4P9-F8199-E5_CS.indd 6-144P9-F8199-E5_CS.indd 6-14
2011/09/06 14:18:412011/09/06 14:18:41
Process BlackProcess Black

1
2
3
4
5
6
7
8
9
6-20
EAU1722A
PERIODIC MAINTENANCE AND ADJUSTMENT
tem, reducing braking perfor-
mance.
● Clean the filler cap before re-
moving. Use only DOT 4 brake
uid from a sealed container.● Use only the specified brake
fluid; otherwise, the rubber
seals may deteriorate, causing
leakage.● Refill with the same type of
brake uid. Adding a brake u-
id other than DOT 4 may result
in a harmful chemical reaction.● Be careful that water does not
enter the brake fluid reser-
voir when refilling. Water will
significantly lower the boiling
point of the fluid and may re-
sult in vapor lock.
ECA17640
NOTICEBrake fluid may damage painted
surfaces or plastic parts. Always
clean up spilled uid immediately.
As the brake pads wear, it is normal
for the brake fluid level to gradually go down. A low brake fl uid level may
indicate worn brake pads and/or brake
system leakage; therefore, be sure to
check the brake pads for wear and the
brake system for leakage. If the brake
fl uid level goes down suddenly, have
a Yamaha dealer check the cause be-
fore further riding.
EAU22721
Changing the brake uidHave a Yamaha dealer change the
brake fl uid at the intervals specifi ed in
the TIP after the periodic maintenance
and lubrication chart. In addition, have
the oil seals of the brake master cyl-
inder and caliper as well as the brake
hose replaced at the intervals listed
below or whenever they are damaged
or leaking.● Oil seals: Replace every two
years.● Brake hose: Replace every four
years.
4P9-F8199-E5_CS.indd 6-204P9-F8199-E5_CS.indd 6-20
2011/09/06 14:18:412011/09/06 14:18:41
Process BlackProcess Black

1
2
3
4
5
6
7
8
9
6-27
EAU1722A
PERIODIC MAINTENANCE AND ADJUSTMENT
EAUT2134
Replacing the headlight bulbThis model is equipped with a halogen
bulb headlight. If the headlight bulb
burns out, replace it as follows.
ECA10650
NOTICETake care not to damage the follow-
ing parts:●
Headlight bulb
Do 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 the bulb life will be ad-
versely affected. Thoroughly clean
off any dirt and ngerprints on the
headlight bulb using a cloth moist-
ened with alcohol or thinner.
●
Headlight lens
• Do not affix any type of
tinted film or stickers to the
headlight lens.
• Do not use a headlight bulb
of a wattage higher than
speci ed.1. Place the vehicle on the center-
stand.
2. Remove panel B. (See page 6-7.)
3. Disconnect the headlight coupler,
and then remove the bulb cover.
ZAUM00**
1
1. Bulb cover4. Unhook the headlight bulb holder,
and then remove the burnt-out
bulb.
ZAUM00**
1
1. Headlight bulb holder5. Place a new headlight bulb into
position, and then secure it with
the bulb holder.
6. Install the headlight bulb cover,
and then connect the coupler.
7. Install the panel.
8. Have a Yamaha dealer adjust the
headlight beam if necessary.
4P9-F8199-E5_CS.indd 6-274P9-F8199-E5_CS.indd 6-27
2011/09/06 14:18:412011/09/06 14:18:41
Process BlackProcess Black

1
2
3
4
5
6
7
8
9
8-1
SPECIFICATIONS SPECIFICATIONS
EAU50915
DimensionsOverall length
1855 mm (73.0 in)
Overall width
685 mm (27.0 in)
Overall height
1130 mm (44.5 in)
Seat height
785 mm (30.9 in)
Wheelbase
1295 mm (51.0 in)
Ground clearance
113 mm (4.45 in)
Minimum turning radius
1900 mm (74.8 in)WeightCurb weight
120 kg (265 lb)EngineEngine type
Air cooled 4-stroke, SOHC
Cylinder arrangement
Single cylinder
Displacement
125 cm
3
Bore x stroke
52.4 x 57.9 mm (2.06 x 2.28 in)
Compression ratio
10.00 :1
Starting system
Electric starter and kickstarter
Lubrication system
Wet sump
Engine oilRecommended brand
YAMALUBE
Type
SAE 10W-30, 10W-40, 10W-50, 15W-40,
20W-40 or 20W-50
–20 –10 0
1020 30 40 50 ˚C 10 30 50 70 90 110 0 130 ˚F
SAE 10W-30
SAE 15W-40SAE 20W-40SAE 20W-50
SAE 10W-40SAE 10W-50
Recommended engine oil grade
API service SG type or higher, JASO
standard MAEngine oil quantityPeriodic oil change
0.90 L (0.95 US qt, 0.79 Imp.qt)Final transmission oilType
SAE 10W-30 type SE motor oil
Quantity
0.11 L (0.12 US qt, 0.10 Imp.qt)Air lterAir fi lter element
Wet elementFuelRecommended fuel
Regular unleaded gasoline onlyFuel tank capacity
7.4 L (1.96 US gal, 1.63 Imp.gal)
Throttle bodyID mark
4P91 00
Manufacturer
MIKUNISpark plug(s)Manufacturer/model
NGK/CR7E
Spark plug gap
0.7-0.8 mm (0.028-0.031 in)ClutchClutch type
Dry, centrifugal automaticTransmissionPrimary reduction ratio
1.000
Secondary reduction ratio
9.744 (38/13 40/12)
Final drive
Gear
Transmission type
V-belt automaticChassisFrame type
Backbone
Caster angle
27.00 degree
Trail
90 mm (3.5 in)Front tireType
Tubeless
4P9-F8199-E5_CS.indd 8-14P9-F8199-E5_CS.indd 8-1
2011/09/06 14:18:412011/09/06 14:18:41
Process BlackProcess Black

1
2
3
4
5
6
7
8
9
8-2
SPECIFICATIONS
Size
110/70-12 47L
Manufacturer/model
CHENG SHIN / C-992NRear tireType
Tubeless
Size
120/70-12 58L
Manufacturer/model
CHENG SHIN / C-6007LoadingMaximum load
157 kg (346 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/cm2, 29 psi, 2.00 bar)
Loading condition
90 kg - maximum load
Front
200 kPa (2.00 kgf/cm2, 29 psi, 2.00 bar)
Rear
225 kPa (2.25 kgf/cm2, 33 psi, 2.25 bar)
Front wheelWheel type
Cast wheel
Rim size
J12 X MT2.75
Rear wheelWheel type
Cast wheel
Rim size
J12 X MT3.00Front brakeType
Single disc brake
Operation
Right hand operation
Recommended fl uid
DOT 4Rear brakeType
Drum brake
Operation
Left hand operationFront suspensionType
Telescopic fork
Spring/shock absorber type
Coil spring/oil damper
Wheel travel
78.0 mm (3.07 in)Rear suspensionType
Unit swing
Spring/shock absorber type
Coil spring/oil damper
Wheel travel
95.5 mm (3.76 in)Electrical systemIgnition system
TCICharging system
AC magneto
BatteryModel
MF (YT7B-BS)
Voltage, capacity
12 V, 6.5 AhHeadlightBulb type
Halogen bulbBulb voltage, wattage x quantityHeadlight
12 V, 60 W/55 W x 1
Tail/brake light
12 V, 5.0 W/21.0 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
LED x 2
High beam indicator light
LED x 1
Turn signal indicator light
LED x 1FusesMain fuse
20.0 A
Headlight fuse
15.0 A
Taillight fuse
7.5 A
4P9-F8199-E5_CS.indd 8-24P9-F8199-E5_CS.indd 8-2
2011/09/06 14:18:412011/09/06 14:18:41
Process BlackProcess Black