ignition YAMAHA CYGNUS 125 2012 Owners Manual

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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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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EAU1044E
INSTRUMENT AND CONTROL FUNCTIONS
vicinity of sparks, open fl ames, or
other sources of ignition such as
the pilot lights of water heaters
and clothes dryers.
2. Do not overfi ll the fuel tank. When
refueling, be sure to insert the
pump nozzle into the fuel tank fi ll-
er hole. Stop fi lling when the fuel
reaches the bottom of the filler
tube. Because fuel expands when
it heats up, heat from the engine
or the sun can cause fuel to spill
out of the fuel tank.
3. Wipe up any spilled fuel im-
mediately.
NOTICE:
Immedi-
ately wipe off spilled fuel with a
clean, dry, soft cloth, since fuel
may deteriorate painted sur-
faces or plastic parts.[ECA10071]
4. Be sure to securely close the fuel
tank cap.
EWA15151
WARNING
Gasoline is poisonous and can
cause injury or death. Handle
gasoline with care. Never siphon
gasoline by mouth. If you should
swallow some gasoline or inhale a
lot of gasoline vapor, or get some
gasoline in your eyes, see your
doctor immediately. If gasoline
spills on your skin, wash with soap
and water. If gasoline spills on your
clothing, change your clothes.
EAU33520
Recommended fuel:
REGULAR UNLEADED GASO-
LINE ONLY
Fuel tank capacity:
7.4 L (1.96 US gal) (1.63 Imp.gal)
ECA11400
NOTICEUse only unleaded gasoline. The
use of leaded gasoline will cause
severe damage to internal engine
parts, such as the valves and pis-
ton rings, as well as to the exhaust
system.
Your Yamaha engine has been de-
signed to use regular unleaded gaso-
line 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 maintenance costs.
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3-11
EAU1044E
INSTRUMENT AND CONTROL FUNCTIONS
Rear storage compartmentZAUM00**
1
1. Rear storage compartmentThe rear storage compartment is
located under the seat. (See page
3-10.)
ECAT1031
NOTICEKeep the following points in mind
when using the rear storage com-
partment.● Since the rear storage com-
partment accumulates heat
when exposed to the sun and/
or the engine heat, do not store
anything susceptible to heat,
consumables or flammable
items inside it.
● To avoid humidity from spread-
ing through the rear storage
compartment, wrap wet articles
in a plastic bag before storing
them in the compartment.● Since the rear storage com-
partment may get wet while the
scooter is being washed, wrap
any articles stored in the rear
compartment in a plastic bag.● Do not keep anything valuable
or breakable in the rear storage
compartment.
EWAT1051
WARNING
● Do not exceed the load limit of
5 kg (11 lb) for the rear storage
compartment.● Do not exceed the maximum
load of 157 kg (346 lb) for the
vehicle.
EAU15305
SidestandZAUM00**
1
1. SidestandThe sidestand is located on the left
side of the frame. Raise the sidestand
or lower it with your foot while holding
the vehicle upright.TIPThe built-in sidestand switch is part
of the ignition circuit cut-off system,
which cuts the ignition in certain situa-
tions. (See the following section for an
explanation of the ignition circuit cut-
off system.)
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3-12
EAU1044E
INSTRUMENT AND CONTROL FUNCTIONS
EWA10241
WARNING
The vehicle must not be ridden with
the sidestand down, or if the sid-
estand cannot be properly moved
up (or does not stay up), otherwise
the sidestand could contact the
ground and distract the operator,
resulting in a possible loss of con-
trol. Yamaha’s ignition circuit cut-
off system has been designed to
assist the operator in fulfilling the
responsibility of raising the sides-
tand before starting off. Therefore,
check this system regularly and
have a Yamaha dealer repair it if it
does not function properly.
EAUT1095
Ignition circuit cut-off systemCheck the operation of the sidestand
switch according to the following pro-
cedure.Turn the key on.
Put the sidestand up.Push the start switch while applying
either of the brake levers. The engine will
start.Put the sidestand down.
If the engine stalls:
The sidestand switch is OK.
WARNING
● The vehicle must be placed on
the centerstand during this in-
spection.● If a malfunction is noted, have
a Yamaha dealer check the
system before riding.
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4-3
EAU15582
FOR YOUR SAFETY - PRE-OPERATION CHECKS
ITEM CHECKS PAGE
Centerstand, sidestand• Make sure that operation is smooth.
• Lubricate pivots if necessary.6-22
Chassis fasteners• Make sure that all nuts, bolts and screws are properly tightened.
• Tighten if necessary.-
Instruments, lights, signals
and switches• Check operation.
• Correct if necessary.3-2~3-5
Sidestand switch• Check operation of ignition circuit cut-off system.
• If system is not working correctly, have Yamaha dealer check vehicle.3-11
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5-1
EAU15943
OPERATION AND IMPORTANT RIDING POINTS
EAU15943
OPERATION AND IMPORTANT RIDING POINTS
EAU15951
Read the Owner’s Manual carefully
to become familiar with all controls.
If there is a control or function you
do not understand, ask your Yamaha
dealer.
EWA10271
WARNING
Failure to familiarize yourself with
the controls can lead to loss of
control, which could cause an ac-
cident or injury.
EAU45310
TIPThis model is equipped with a lean
angle sensor to stop the engine in
case of a turnover. To start the en-
gine after a turnover, be sure to turn
the main switch to “OFF” and then to
“ON”. Failing to do so will prevent the
engine from starting even though the
engine will crank when pushing the
start switch.
EAUT1864
Starting the engine
ECA10250
NOTICESee page 5-3 for engine break-in
instructions prior to operating the
vehicle for the rst time.
In order for the ignition circuit cut-off
system to enable starting, the sides-
tand must be up.
See page 3-12 for more information.
1. Turn the key to “ON”.
2. Close the throttle completely.
3. Start the engine by pushing the
start switch while applying the
front or rear brake.
If the engine does not start, re-
lease the start 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 en-
gine more than 5 seconds on any
one attempt. If the engine does
not start with the starter motor, try
using the kickstarter.
ECA11042
NOTICEFor maximum engine life, never ac-
celerate hard when the engine is
cold!
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6-26
EAU1722A
PERIODIC MAINTENANCE AND ADJUSTMENT
EAUT1915
Replacing the fusesThe main fuse box is located above
the battery.ZAUM00**
1
1. Main fuseThe fuse box, which contains the fus-
es for the individual circuits, is located
in the storage compartment. (See
page 3-10.)
ZAUM00**
1
234
5
6
1. Lid
2. Backup fuse
3. Ignition fuse
4. Signaling system fuse
5. Taillight fuse
6. Headlight fuseIf a fuse is blown, replace it as follows.
1. Turn the key to “OFF” and turn off
the electrical circuit in question.
2. Remove the blown fuse, and then
install a new fuse of the specifi ed
amperage. WARNING! Do not
use a fuse of a higher amper-
age rating than recommended
to avoid causing extensive
damage to the electrical sys-
tem and possibly a fire.
[EWA15131]

NOTICE:
After removing and
installing the main fuse, be sure to turn the main switch
from “ON” to “OFF” three
times in 3 seconds intervals to
initialize the idle speed control
system.
[ECAT1062]
Speci ed fuses:
Main fuse:
20 A
Headlight fuse:
15 A
Signaling system fuse:
15 A
Ignition fuse:
7.5 A
Backup fuse:
7.5 A
Taillight fuse:
7.5 A3. 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.
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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 flames or sparks in
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6-31
EAU1722A
PERIODIC MAINTENANCE AND ADJUSTMENT
EAUT1982
Troubleshooting chart
Check the fuel level in
the fuel tank.1. Fuel
There is enough fuel.
There is no fuel.
Check the compression.
Supply fuel.
The engine does not start.
Check the compression.
Operate the electric starter.2. Compression
There is compression.
There is no compression.
Check the ignition.
Have a Yamaha dealer
check the vehicle.
Remove the spark plug
and check the electrodes.3. Ignition
Wipe off with a dry cloth and correct the
spark plug gap, or replace the spark plug.
Have a Yamaha dealer check the vehicle.
The engine does not start.
Have a Yamaha dealer
check the vehicle.
The engine does not start.
Check the battery.
Operate the electric starter.4. Battery
The engine turns over
quickly.
The engine turns over
slowly.
The battery is good.Check the battery lead connections,
and charge the battery if necessary.
DryWet
Operate the electric starter.
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