2012 YAMAHA CYGNUS 125 brake light

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
4P9-F8199-E5_CS.indd 64P9-F8199-E5_CS.indd 6
2011/09/06 14:18:392011/09/06 14:18:39
Process BlackProcess Black

1
2
3
4
5
6
7
8
9
2-1
EAU10401
DESCRIPTION1. Fuel tank cap (page 3-7)
2. Rear storage compartment (page 3-10)
3. Rear turn signal light (page 6-28)
4. Tail/brake light (page 6-28)
5. Kickstarter (page 3-9)
6. Air fi lter (page 6-13)
EAU10410
Left view
EAU10401
DESCRIPTION
4
3 2
1
6
5
4P9-F8199-E5_CS.indd 2-14P9-F8199-E5_CS.indd 2-1
2011/09/06 14:18:392011/09/06 14:18:39
Process BlackProcess Black

1
2
3
4
5
6
7
8
9
3-6
EAU1044E
INSTRUMENT AND CONTROL FUNCTIONS
EAU12400
Dimmer switch “&/%”
Set this switch to “&” for the high
beam and to “%” for the low beam.
EAU12460
Turn signal switch “4/6”
To signal a right-hand turn, push this
switch to “6”. To signal a left-hand
turn, push this switch to “4”. When
released, the switch returns to the
center position. To cancel the turn
signal lights, push the switch in after it
has returned to the center position.
EAU12500
Horn switch “*”
Press this switch to sound the horn.
EAU12721
Start switch “,”
With the sidestand up, push this
switch while applying the front or rear
brake to crank the engine with the
starter. See page 5-1 for starting in-
structions prior to starting the engine.
EAU12900
Front brake leverZAUM00**
1
1. Front brake leverThe front brake lever is located on
the right handlebar grip. To apply the
front brake, pull this lever toward the
handlebar grip.
EAU12950
Rear brake leverZAUM00**
1
1. Rear brake leverThe rear brake lever is located on the
left handlebar grip. To apply the rear
brake, pull this lever toward the han-
dlebar grip.
4P9-F8199-E5_CS.indd 3-64P9-F8199-E5_CS.indd 3-6
2011/09/06 14:18:392011/09/06 14:18:39
Process BlackProcess Black

1
2
3
4
5
6
7
8
9
6-5
EAU1722A
PERIODIC MAINTENANCE AND ADJUSTMENTNO. ITEM CHECK OR MAINTENANCE JOBODOMETER READING
ANNUAL
CHECK
1000 km
(600 mi)6000 km
(3500 mi)
12000 km
(7000 mi)18000 km
(10500 mi)24000 km
(14000 mi)
12Rear brake lever pivot
shaft• Lubricate with lithium-soap-based grease.
√√√√ √
13 Sidestand, centerstand• Check operation.
• Lubricate with lithium-soap-based grease.√√√√ √
14 * Sidestand switch• Check operation.
√√√√√ √
15 * Front fork• Check operation and for oil leakage.
√√√√
16 *Shock absorber as-
sembly• Check operation and shock absorber for oil leakage.
√√√√
17 Engine oil• Change. (See page 6-10.)
• Check oil level and vehicle for oil leakage.√Every 3000 km (1800 mi)
18 Engine oil strainer• Clean.
√Every 6000 km (3500 mi)
19 Final transmission oil• Check vehicle for oil leakage.
• Change.√√√√√ √
20 * V-belt• Replace. Every 18000 km (10500 mi)
21 *Front and rear brake
switches• Check operation.
√√√√√ √
22Moving parts and ca-
bles• Lubricate.
√√√√ √
23 * Throttle grip• Check operation.
• Check throttle grip free play, and adjust if necessary.
• Lubricate cable and grip housing.√√√√ √
24 *Lights, signals and
switches• Check operation.
• Adjust headlight beam.√√√√√ √
4P9-F8199-E5_CS.indd 6-54P9-F8199-E5_CS.indd 6-5
2011/09/06 14:18:402011/09/06 14:18:40
Process BlackProcess Black

1
2
3
4
5
6
7
8
9
6-28
EAU1722A
PERIODIC MAINTENANCE AND ADJUSTMENT
EAUT1892
Replacing a front turn signal
light bulb
ECA10670
NOTICEIt is advisable to have a Yamaha
dealer perform this job.
1. Place the scooter on the center-
stand.
2. Remove panel A. (See page 6-7.)
3. Remove the socket (together with
the bulb) by turning it counter-
clockwise.
4. Remove the burnt out bulb by
pushing it in and turning it coun-
terclockwise.ZAUM00**
1
2
1. Turn signal light bulb
2. Socket
5. Insert a new bulb into the socket,
push it in, and then turn it clock-
wise until it stops.
6. Install the socket (together with
the bulb) by turning it clockwise.
7. Install the panel.
EAUT1923
Replacing the tail/brake light
bulb or a rear turn signal light
bulbZAUM00**3
1
2
4
1. Tail/brake light lens
2. Turn signal light lens
3. Rear turn signal light bulb
4. Tail/brake light bulbTail/brake light bulb
1. Remove the tail/brake light lens
by removing the screws.
2. Remove the burnt out bulb by
pushing it in and turning it coun-
terclockwise.
3. Insert a new bulb into the socket,
push it in, and then turn it clock-
wise until it stops.
4. Install the lens by installing the
screws.
4P9-F8199-E5_CS.indd 6-284P9-F8199-E5_CS.indd 6-28
2011/09/06 14:18:412011/09/06 14:18:41
Process BlackProcess Black

1
2
3
4
5
6
7
8
9
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
4P9-F8199-E5_CS.indd 6-294P9-F8199-E5_CS.indd 6-29
2011/09/06 14:18:412011/09/06 14:18:41
Process BlackProcess Black

1
2
3
4
5
6
7
8
9
7-2
EAU25991
SCOOTER CARE AND STORAGE
with water, diluted mild deter-
gent with water may be used.
Be sure to rinse off any deter-
gent residue using plenty of
water, as it is harmful to plastic
parts.
● Do not use any harsh chemical
products on plastic parts. Be
sure to avoid using cloths or
sponges which have been in
contact with strong or abrasive
cleaning products, solvent or
thinner, fuel (gasoline), rust
removers or inhibitors, brake
uid, antifreeze or electrolyte.● Do not use high-pressure
washers or steam-jet cleaners
since they cause water seep-
age and deterioration in the
following areas: seals (of wheel
and swingarm bearings, fork
and brakes), electric compo-
nents (couplers, connectors,
instruments, switches and
lights), breather hoses and
vents.● For vehicles equipped with a
windshield: Do not use strong
cleaners or hard sponges
as they will cause dulling or
scratching. Some cleaning
compounds for plastic may
leave scratches on the wind-
shield. Test the product on a
small hidden part of the wind-
shield to make sure that it does
not leave any marks. If the
windshield is scratched, use a
quality plastic polishing com-
pound after washing.
After normal use
Remove dirt with warm water, a mild
detergent, and a soft, clean sponge,
and then rinse thoroughly with clean
water. Use a toothbrush or bottlebrush
for hard-to-reach areas. Stubborn dirt
and insects will come off more easily
if the area is covered with a wet cloth
for a few minutes before cleaning.
After riding in the rain, near the sea or
on salt-sprayed roads
Since sea salt or salt sprayed on the
roads during winter are extremely cor-
rosive in combination with water, carry
out the following steps after each ride
in the rain, near the sea or on salt-
sprayed roads.TIPSalt sprayed on roads in the winter
may remain well into spring.
1. Clean the scooter with cold water
and a mild detergent after the en-
gine has cooled down.
NOTICE:
Do not use warm water since it
increases the corrosive action
of the salt.
[ECA10791]
2. Apply a corrosion protection
spray on all metal, including
chrome- and nickel-plated, sur-
faces to prevent corrosion.
After cleaning
1. Dry the scooter with a chamois or
an absorbing cloth.
2. Use a chrome polish to shine
chrome, aluminum and stainless-
steel parts, including the exhaust
system. (Even the thermally in-
4P9-F8199-E5_CS.indd 7-24P9-F8199-E5_CS.indd 7-2
2011/09/06 14:18:412011/09/06 14:18:41
Process BlackProcess Black

1
2
3
4
5
6
7
8
9
7-3
EAU25991
SCOOTER CARE AND STORAGE
duced discoloring of stainless-
steel exhaust systems can be
removed through polishing.)
3. To prevent corrosion, it is recom-
mended to apply a corrosion pro-
tection spray on all metal, includ-
ing chrome- and nickel-plated,
surfaces.
4. Use spray oil as a universal
cleaner to remove any remaining
dirt.
5. Touch up minor paint damage
caused by stones, etc.
6. Wax all painted surfaces.
7. Let the scooter dry completely
before storing or covering it.
EWA10942
WARNING
Contaminants on the brakes or
tires can cause loss of control.● Make sure that there is no oil
or wax on the brakes or tires.
If necessary, clean the brake
discs and brake linings with a
regular brake disc cleaner or
acetone, and wash the tires
with warm water and a mild de-
tergent.
● Before operating the vehicle,
test its braking performance
and cornering behavior.
ECA10800
NOTICE● Apply spray oil and wax spar-
ingly and make sure to wipe off
any excess.● Never apply oil or wax to any
rubber and plastic parts, but
treat them with a suitable care
product.● Avoid using abrasive polishing
compounds as they will wear
away the paint.
TIP● Consult a Yamaha dealer for ad-
vice on what products to use.● Washing, rainy weather or humid
climates can cause the headlight
lens to fog. Turning the headlight
on for a short period of time will
help remove the moisture from
the lens.
4P9-F8199-E5_CS.indd 7-34P9-F8199-E5_CS.indd 7-3
2011/09/06 14:18:412011/09/06 14:18:41
Process BlackProcess Black