2011 YAMAHA CYGNUS 125 AUX

TABLE OF CONTENTSSAFETY INFORMATION .................... 1-1
Further safe-riding points ................. 1-5
DESCRIPTION .................................... 2-1
Left view ........................................... 2-1
Right view......................................... 2-2
Controls and instruments ................. 2-3
INSTRUMENT AND CONTROL FUNC-
TIONS.................................................. 3-1
Main switch/steering lock ................. 3-1
Keyhole cover .................................. 3-2
Indicator and warning lights ............. 3-2
Speedometer.................................... 3-3
Multi-function display........................ 3-3
Handlebar switches .......................... 3-5
Front brake lever .............................. 3-6
Rear brake lever............................... 3-6
Fuel tank cap.................................... 3-7
Fuel .................................................. 3-7
Catalytic converters.......................... 3-9
Kickstarter ........................................ 3-9
Seat ................................................ 3-10
Storage compartments ................... 3-10
Sidestand ....................................... 3-11
Ignition circuit cut-off system .......... 3-12
FOR YOUR SAFETY - PRE-OPERATION
CHECKS ............................................. 4-1OPERATION AND IMPORTANT RIDING
POINTS ............................................... 5-1
Starting the engine ........................... 5-1
Starting off ........................................ 5-2
Acceleration and deceleration .......... 5-2
Braking ............................................. 5-2
Tips for reducing fuel consumption .. 5-3
Engine break-in ................................ 5-3
Parking ............................................. 5-4
PERIODIC MAINTENANCE AND AD-
JUSTMENT ......................................... 6-1
Owner’s tool kit................................. 6-2
Periodic maintenance chart for the
emission control system ............... 6-3
General maintenance and lubrication
chart .............................................. 6-4
Removing and installing panels ....... 6-7
Checking the spark plug................... 6-8
Engine oil and oil strainer ............... 6-10
Final transmission oil...................... 6-12
Air fi lter and V-belt case air fi lter
elements ..................................... 6-13
Checking the throttle grip free
play ............................................. 6-15
Valve clearance.............................. 6-15
Tires ............................................... 6-16
Cast wheels.................................... 6-17
Checking the brake lever free
play ............................................. 6-18Adjusting the rear brake lever free
play ............................................. 6-18
Checking the front brake pads and
rear brake shoes ......................... 6-19
Checking the brake fl uid level ........ 6-19
Changing the brake fl uid ................ 6-20
Checking and lubricating the
cables ......................................... 6-21
Checking and lubricating the throttle grip
and cable .................................... 6-21
Lubricating the front and rear brake
levers .......................................... 6-21
Checking and lubricating the
centerstand and sidestand.......... 6-22
Checking the front fork ................... 6-23
Checking the steering .................... 6-23
Checking the wheel bearings ......... 6-24
Battery ............................................ 6-24
Replacing the fuses........................ 6-26
Replacing the headlight bulb .......... 6-27
Replacing a front turn signal light
bulb ............................................. 6-28
Replacing the tail/brake light bulb or a
rear turn signal light bulb ............ 6-28
Replacing an auxiliary light bulb..... 6-29
Troubleshooting ............................. 6-29
Troubleshooting chart .................... 6-31
SCOOTER CARE AND STORAGE .... 7-1
Matte color caution ........................... 7-1
Care ................................................. 7-1
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EAU10401
DESCRIPTION
EAU10420
Right view1. Battery (page 6-24)
2. Front turn signal light (page 6-28)
3. Auxiliary light bulb (page 6-29)
4. Headlight (page 6-27)
5. Centerstand (page 6-22)
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EAU1044E
INSTRUMENT AND CONTROL FUNCTIONS
EAU1044E
INSTRUMENT AND CONTROL FUNCTIONS
EAU45440
Main switch/steering lockZAUM00**ON
OFF
LOCK
The main switch/steering lock controls
the ignition and lighting systems, and
is used to lock the steering. The vari-
ous positions are described below.TIPThe main switch/steering lock is
equipped with a keyhole cover. (See
page 3-2.)
EAUT1971
ON
All electrical circuits are supplied with
power; the meter lighting, taillight, and
auxiliary lights come on, and the en-
gine can be started. The key cannot
be removed.
TIPThe headlight comes on automatically
when the engine is started and stays
on until the key is turned to “OFF” or
the sidestand is moved down.
EAU10661
OFF
All electrical systems are off. The key
can be removed.
EWA10061
WARNING
Never turn the key to “OFF” or
“LOCK” while the vehicle is mov-
ing. Otherwise the electrical sys-
tems will be switched off, which
may result in loss of control or an
accident.
EAU10683
LOCK
The steering is locked, and all electri-
cal systems are off. The key can be
removed.
To lock the steeringZAUM00**
1
1. Push.1. Turn the handlebars all the way
to the left.
2. Push the key in from the “OFF”
position, and then turn it to
“LOCK” while still pushing it.
3. Remove the key.
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6-29
EAU1722A
PERIODIC MAINTENANCE AND ADJUSTMENTRear turn signal light bulb
1. Remove the tail/brake light lens
by removing the screws.
2. Remove the turn signal light lens
by removing the screws.
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 screws.
6. Install the tail/brake light lens
by installing the screws.
NO-
TICE:
Do not overtighten the
screws, otherwise the lens may
break.[ECA10681]EAUT1963
Replacing an auxiliary light
bulbZAUM00**
12
1. Auxiliary light bulb
2. SocketThis model is equipped with two aux-
iliary lights. If an auxiliary light bulb
burns out, replace it as follows.
1. Remove panel B. (See page 6-7.)
2. Remove the auxiliary light socket
(together with the bulb) by turning
it counterclockwise.
3. Remove the burnt out bulb by
pulling it out.
4. Insert a new bulb into the socket.
5. Install the auxiliary light socket
(together with the bulb) by turning
it clockwise.
6. Install the panel.
EAU25861
TroubleshootingAlthough Yamaha scooters receive a
thorough inspection before shipment
from the factory, trouble may occur
during operation. Any problem in the
fuel, compression, or ignition systems,
for example, can cause poor starting
and loss of power.
The following troubleshooting chart
represents a quick and easy pro-
cedure for checking these vital sys-
tems yourself. However, should your
scooter require any repair, take it to a
Yamaha dealer, whose skilled techni-
cians have the necessary tools, expe-
rience, 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
WARNING
When checking the fuel system, do
not smoke, and make sure there
are no open ames or sparks in
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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
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INDEXAAcceleration and deceleration................... 5-2
Air fi lter and V-belt case air fi lter
elements ............................................... 6-13
Auxiliary light bulb, replacing .................. 6-29BBattery..................................................... 6-24
Brake fl uid, changing .............................. 6-20
Brake fl uid level, checking ...................... 6-19
Brake lever, front....................................... 3-6
Brake lever, rear ....................................... 3-6
Brake levers, lubricating.......................... 6-21
Brake lever free play, checking ............... 6-18
Brake pads and shoes, checking ............ 6-19
Braking ...................................................... 5-2CCables, checking and lubricating ............ 6-21
Care .......................................................... 7-1
Catalytic converters .................................. 3-9
Centerstand and sidestand, checking and
lubricating ............................................. 6-22DDimmer switch .......................................... 3-6EEngine break-in ......................................... 5-3
Engine oil and oil strainer........................ 6-10
Engine trouble warning light...................... 3-2FFinal transmission oil .............................. 6-12
Front fork, checking ................................ 6-23
Fuel ........................................................... 3-7
Fuel consumption, tips for reducing .......... 5-3
Fuel tank cap ............................................ 3-7
Fuses, replacing...................................... 6-26
HHandlebar switches................................... 3-5
Headlight bulb, replacing ........................ 6-27
High beam indicator light .......................... 3-2
Horn switch ............................................... 3-6IIdentifi cation numbers ............................... 9-1
Ignition circuit cut-off system................... 3-12
Indicator and warning lights ...................... 3-2KKeyhole cover ........................................... 3-2
Kickstarter ................................................. 3-9MMaintenance, emission control system ..... 6-3
Maintenance and lubrication, periodic ...... 6-4
Main switch/steering lock .......................... 3-1
Matte color, caution................................... 7-1
Model label................................................ 9-1
Multi-function display ................................ 3-3PPanels, removing and installing ................ 6-7
Parking ...................................................... 5-4
Part locations ............................................ 2-1RRear brake lever free play, adjusting ...... 6-18SSafe-riding points ...................................... 1-5
Safety information ..................................... 1-1
Seat......................................................... 3-10
Sidestand ................................................ 3-11
Spark plug, checking................................. 6-8
Specifi cations ............................................ 8-1
Speedometer ............................................ 3-3
Starting off................................................. 5-2Starting the engine .................................... 5-1
Start switch ............................................... 3-6
Steering, checking .................................. 6-23
Storage ..................................................... 7-4
Storage compartments............................ 3-10
TTail/brake light bulb or rear turn signal light
bulb, replacing ...................................... 6-28
Throttle grip and cable, checking and
lubricating ............................................. 6-21
Throttle grip free play, checking .............. 6-15
Tires ........................................................ 6-16
Tool kit ...................................................... 6-2
Troubleshooting ...................................... 6-29
Troubleshooting chart ............................. 6-31
Turn signal indicator light .......................... 3-2
Turn signal light bulb (front), replacing.... 6-28
Turn signal switch ..................................... 3-6VValve clearance ...................................... 6-15
Vehicle identifi cation number .................... 9-1WWheels .................................................... 6-17
Wheel bearings, checking ....................... 6-24
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