2012 YAMAHA CYGNUS 125 ECU

1
2
3
4
5
6
7
8
9
1-3
Q
SAFETY INFORMATION●
Do not run engine in poorly ven-
tilated or partially enclosed areas
such as barns, garages, or car-
ports.
●
Do not run engine outdoors
where engine exhaust can be
drawn into a building through
openings such as windows and
doors.
Loading
Adding accessories or cargo to your
scooter can adversely affect stability
and handling if the weight distribution
of the scooter is changed. To avoid
the possibility of an accident, use ex-
treme caution when adding cargo or
accessories to your scooter. Use extra
care when riding a scooter that has
added cargo or accessories. Here,
along with the information about ac-
cessories below, are some general
guidelines to follow if loading cargo to
your scooter:
The total weight of the operator,
passenger, accessories and cargo
must not exceed the maximum load
limit. Operation of an overloaded
vehicle could cause an accident.
Maximum load:
157 kg (346 lb)When loading within this weight limit,
keep the following in mind:●
Cargo and accessory weight
should be kept as low and close
to the scooter as possible. Se-
curely pack your heaviest items
as close to the center of the ve-
hicle as possible and make sure
to distribute the weight as evenly
as possible on both sides of the
scooter to minimize imbalance or
instability.
●
Shifting weights can create a
sudden imbalance. Make sure
that accessories and cargo are
securely attached to the scooter
before riding. Check accessory
mounts and cargo restraints fre-
quently.
• Properly adjust the suspen-
sion for your load (suspension-
adjustable models only), and
check the condition and pres-
sure of your tires.
• Never attach any large or heavy items to the handlebar,
front fork, or front fender. Such
items can create unstable
handling or a slow steering re-
sponse.
●
This vehicle is not designed to
pull a trailer or to be attached
to a sidecar.
Genuine Yamaha Accessories
Choosing accessories for your vehicle
is an important decision. Genuine
Yamaha accessories, which are avail-
able only from a Yamaha dealer, have
been designed, tested, and approved
by Yamaha for use on your vehicle.
Many companies with no connection
to Yamaha manufacture parts and ac-
cessories or offer other modifications
for Yamaha vehicles. Yamaha is not
in a position to test the products that
these aftermarket companies pro-
duce. Therefore, Yamaha can neither
endorse nor recommend the use of
accessories not sold by Yamaha or
modifications not specifically recom-
mended by Yamaha, even if sold and
installed by a Yamaha dealer.
4P9-F8199-E5_CS.indd 1-34P9-F8199-E5_CS.indd 1-3
2011/09/06 14:18:392011/09/06 14:18:39
Process BlackProcess Black

1
2
3
4
5
6
7
8
9
1-5
Q
SAFETY INFORMATION
EAU10373
Further safe-riding points●
Be sure to signal clearly when
making turns.
ZAUM00**ZAUM00**●
Braking can be extremely diffi cult
on a wet road. Avoid hard brak-
ing, because the scooter could
slide. Apply the brakes slowly
when stopping on a wet surface.
●
Slow down as you approach
a corner or turn. Once you have
completed a turn, accelerate
slowly.
●
Be careful when passing parked
cars. A driver might not see you
and open a door in your path.
●
Railroad crossings, streetcar
rails, iron plates on road con-
struction sites, and manhole
covers become extremely slip-
pery when wet. Slow down and
cross them with caution. Keep the
scooter upright, otherwise it could
slide out from under you.
●
The brake pads could get wet
when you wash the scooter. After
washing the scooter, check the
brakes before riding.
●
Always wear a helmet, gloves,
trousers (tapered around the cuff
and ankle so they do not flap),
and a bright colored jacket.
●
Do not carry too much luggage
on the scooter. An overloaded
scooter is unstable. Use a strong
cord to secure any luggage to
the carrier (if equipped). A loose bed, and choke it in a rail to pre-
vent movement.
●
Secure the scooter with tie-downs
or suitable straps that are at-
tached to solid parts of the scoot-
er, such as the frame or upper
front fork triple clamp (and not, for
example, to rubber-mounted han-
dlebars or turn signals, or parts
that could break). Choose the
location for the straps carefully
so the straps will not rub against
painted surfaces during transport.
●
The suspension should be com-
pressed somewhat by the tie-
downs, if possible, so that the
scooter will not bounce exces-
sively during transport.
4P9-F8199-E5_CS.indd 1-54P9-F8199-E5_CS.indd 1-5
2011/09/06 14:18:392011/09/06 14:18:39
Process BlackProcess Black

1
2
3
4
5
6
7
8
9
3-8
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.
4P9-F8199-E5_CS.indd 3-84P9-F8199-E5_CS.indd 3-8
2011/09/06 14:18:392011/09/06 14:18:39
Process BlackProcess Black

1
2
3
4
5
6
7
8
9
6-21
EAU1722A
PERIODIC MAINTENANCE AND ADJUSTMENT
EAU43641
Lubricating the front and rear
brake leversZAUM00**ZAUM00**
The pivoting points of the front and
rear brake levers must be lubricated
at the intervals specifi ed in the period-
ic maintenance and lubrication chart.
EAU23095
Checking and lubricating the
cablesThe operation of all control cables
and the condition of the cables should
be checked before each ride, and
the cables and cable ends should be
lubricated if necessary. If a cable is
damaged or does not move smoothly,
have a Yamaha dealer check or re-
place it.
WARNING! Damage to the outer
housing of cables may result in
internal rusting and cause inter-
ference with cable movement.
Replace damaged cables as soon
as possible to prevent unsafe
conditions.
[EWA10711]
Recommended lubricant:
Yamaha Chain and Cable Lube or
engine oil
EAU23114
Checking and lubricating the
throttle grip and cableThe operation of the throttle grip
should be checked before each ride.
In addition, the cable should be lubri-
cated by a Yamaha dealer at the inter-
vals specified in the periodic mainte-
nance chart.
The throttle cable is equipped with a
rubber cover. Make sure that the cov-
er is securely installed. Even though
the cover is installed correctly, it does
not completely protect the cable from
water entry. Therefore, use care not to
pour water directly onto the cover or
cable when washing the vehicle. If the
cable or cover becomes dirty, wipe
clean with a moist cloth.
4P9-F8199-E5_CS.indd 6-214P9-F8199-E5_CS.indd 6-21
2011/09/06 14:18:412011/09/06 14:18:41
Process BlackProcess Black

1
2
3
4
5
6
7
8
9
6-23
EAU1722A
PERIODIC MAINTENANCE AND ADJUSTMENT
EAU23272
Checking the front forkThe condition and operation of the
front fork must be checked as follows
at the intervals specifi ed in the period-
ic maintenance and lubrication chart.
To check the condition
Check the inner tubes for scratches,
damage and excessive oil leakage.
To check the operation
1. Place the vehicle on a level sur-
face and hold it in an upright
position. WARNING! To avoid
injury, securely support the ve-
hicle so there is no danger of it
falling over.
[EWA10751]
2. While applying the front brake,
push down hard on the handle-
bars several times to check if the
front fork compresses and re-
bounds smoothly.
ZAUM00**
ECA10590
NOTICEIf any damage is found or the front
fork does not operate smoothly,
have a Yamaha dealer check or re-
pair it.
EAU45511
Checking the steeringWorn or loose steering bearings may
cause danger. Therefore, the opera-
tion of the steering must be checked
as follows at the intervals specifi ed in
the periodic maintenance and lubrica-
tion chart.
1. Place the vehicle on the cen-
terstand. WARNING! To avoid
injury, securely support the ve-
hicle so there is no danger of it
falling over.
[EWA10751]
2. Hold the lower ends of the front
fork legs and try to move them
forward and backward. If any free
play can be felt, have a Yamaha
dealer check or repair the steer-
ing.
4P9-F8199-E5_CS.indd 6-234P9-F8199-E5_CS.indd 6-23
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