2007 YAMAHA CYGNUS 125 lights

TABLE OF CONTENTS
SAFETY INFORMATION
...................1-1
Further safe-riding points .................1-4
DESCRIPTION
...................................2-1
Left view ...........................................2-1
Right view .........................................2-2
Controls and instruments..................2-3
INSTRUMENT AND CONTROL
FUNCTIONS
........................................3-1
Main switch ......................................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 ..............................3-7
Fuel tank cap ...................................3-7
Fuel ..................................................3-8
Catalytic converter ...........................3-9
Kickstarter ........................................3-9
Seat .................................................3-9
Storage compartments ..................3-10
Sidestand .......................................3-11
Sidestand switch operation check .3-12
PRE-OPERATION CHECKS
...............4-1
Pre-operation check list ...................4-2
OPERATION 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
MINOR REPAIR
.................................. 6-1
Owner’s tool kit ................................ 6-1
Periodic maintenance and lubrication
chart ............................................. 6-3
Removing and installing panels ...... 6-6
Checking the spark plug .................. 6-7
Engine oil and oil strainer ................ 6-9
Final transmission oil ..................... 6-11
Air filter and V-belt case air filter
elements .................................... 6-12
Checking the throttle cable free
play ............................................ 6-14
Valve clearance ............................. 6-14
Tires .............................................. 6-14
Cast wheels ................................... 6-16
Adjusting the rear brake lever free
play ............................................ 6-16
Checking the front brake pads and
rear brake shoes ........................ 6-17Checking the front brake fluid
level ........................................... 6-18
Changing the brake fluid ............... 6-19
Checking and lubricating the
cables ........................................ 6-19
Checking and lubricating the throttle
grip and cable ............................ 6-20
Lubricating the front and rear brake
levers ......................................... 6-20
Checking and lubricating the
centerstand and sidestand ........ 6-20
Checking the front fork .................. 6-21
Checking the steering ................... 6-21
Checking the wheel bearings ........ 6-22
Battery ........................................... 6-22
Replacing the fuses ...................... 6-24
Replacing the headlight bulb ........ 6-25
Replacing a front turn signal light
bulb ............................................ 6-26
Replacing the tail/brake light bulb or
a rear turn signal light bulb ........ 6-27
Replacing an auxiliary light bulb ... 6-27
Troubleshooting ............................ 6-28
Troubleshooting chart ................... 6-29
SCOOTER CARE AND
STORAGE
........................................... 7-1
Matte color caution .......................... 7-1
Care ................................................ 7-1
Storage ........................................... 7-3

SAFETY INFORMATION
1-3
1
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. 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 sud-
den imbalance. Make sure that ac-
cessories and cargo are securely
attached to the scooter before
riding. Check accessory mounts
and cargo restraints frequently.

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 response.
Accessories
Genuine Yamaha accessories have
been specifically designed for use on
this scooter. Since Yamaha cannot test
all other accessories that may be avail-
able, you must personally be responsi-
ble for the proper selection, installationand use of non-Yamaha accessories.
Use extreme caution when selecting
and installing any accessories.
Keep the following guidelines in mind,
as well as those provided under “Load-
ing” when mounting accessories.


Never install accessories or carry
cargo that would impair the perfor-
mance of your scooter. Carefully
inspect the accessory before using
it to make sure that it does not in
any way reduce ground clearance
or cornering clearance, limit sus-
pension travel, steering travel or
control operation, or obscure lights
or reflectors.

Accessories fitted to the handle-
bar or the front fork area can
create instability due to improper
weight distribution or aerody-
namic changes. If accessories
are added to the handlebar or
front fork area, they must be as
lightweight as possible and
should be kept to a minimum.

Bulky or large accessories may
seriously affect the stability of
the scooter due to aerodynamiceffects. Wind may attempt to lift
the scooter, or the scooter may
become unstable in cross
winds. These accessories may
also cause instability when
passing or being passed by
large vehicles.

Certain accessories can dis-
place the operator from his or
her normal riding position. This
improper position limits the free-
dom of movement of the opera-
tor and may limit control ability,
therefore, such accessories are
not recommended.

Use caution when adding electri-
cal accessories. If electrical acces-
sories exceed the capacity of the
scooter’s electrical system an
electric failure could result, which
could cause a dangerous loss of
lights or engine power.
Gasoline and exhaust gas

GASOLINE IS HIGHLY FLAMMA-
BLE:

Always turn the engine off when
refueling.

3-1
2
34
5
6
7
8
9

INSTRUMENT AND CONTROL FUNCTIONS
EAUU0061
Main switch
The main switch controls the ignition
and lighting systems. The various main
switch positions are described below.
NOTE:

The main switch is equipped with a key-
hole 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 engine
can be started. The key cannot be re-
moved.
NOTE:

The headlight comes on automaticallywhen the engine is started and stays on
until the key is turned to “OFF” or the
sidestand is moved down.
EAU10660
OFF
All electrical systems are off. The key
can be removed.
EAU10680
LOCK
The steering is locked, and all electrical
systems are off. The key can be re-
moved.
To lock the steering
1. Turn the handlebars all the way tothe left.
2. Push the key in from the “OFF” po-
sition, and then turn it to “LOCK”
while still pushing it.
3. Remove the key.
To unlock the steering
Push the key in, and then turn it to
“OFF” while still pushing it.
WARNING

EWA10060
Never turn the key to “OFF” or
“LOCK” while the vehicle is moving,
otherwise the electrical systems will
be switched off, which may result in
loss of control or an accident. Make
ZAUM00**

1. Push.
ZAUM00**
1

1. Turn.
2. Release.
12
ZAUM00**

INSTRUMENT AND CONTROL FUNCTIONS
3-2
1
2
3
4
5
6
7
8
9sure that the vehicle is stopped be-
fore turning the key to “OFF” or

“LOCK”.
EAUT2111
Keyhole cover
To open the keyhole cover
Insert the key bow into the keyhole cov-
er receptacle as shown, and then turn
the key to the right to open the cover.
To close the keyhole cover
Push the keyhole cover lever inward
and the keyhole cover will close.

EAU11003
Indicator and warning lights
EAU11020
Turn signal indicator light “”
This indicator light flashes when the
turn signal switch is pushed to the left or
right.
EAU11080
High beam indicator light “”
This indicator light comes on when the
high beam of the headlight is switched
on.
1. Keyhole cover lever
ZAUM00**
1

1. High beam indicator light “ ”
2. Turn signal indicator light “ ”
3. Engine trouble warning light “ ”
ZAUM00**
RESET
SELECT
1
2
3

INSTRUMENT AND CONTROL FUNCTIONS
3-6
1
2
3
4
5
6
7
8
9Right

EAU12400
Dimmer switch “/”
Set this switch to “ ” for the high
beam and to “ ” for the low beam.
EAU12460
Turn signal switch “/”
To signal a right-hand turn, push this
switch to “ ”. To signal a left-hand
turn, push this switch to “ ”. When re-
leased, the switch returns to the center
position. To cancel the turn signal
lights, push the switch in after it has re-
turned to the center position.
EAU12500
Horn switch “”
Press this switch to sound the horn.
EAU12720
Start switch “”
With the sidestand up, push this switch
while applying the front or rear brake to
crank the engine with the starter.
CAUTION:

ECA10050
See page 5-1 for starting instruc-
tions prior to starting the engine.
EAU12900
Front brake lever
The front brake lever is located on the
right handlebar grip. To apply the front
brake, pull this lever toward the handle-
bar grip.
1. Start switch “ ”
ZAUM00**
1

1. Front brake lever
ZAUM00**
1

PRE-OPERATION CHECKS
4-3
2
3
45
6
7
8
9

Centerstand, sidestand

Make sure that operation is smooth.

Lubricate pivots if necessary.6-20
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.—
Sidestand switch

Check operation of ignition circuit cut-off system.

If system is defective, have Yamaha dealer check vehicle.3-11
ITEM CHECKS PAGE

OPERATION AND IMPORTANT RIDING POINTS
5-3
1
2
3
4
5
6
7
8
9

EAU16820
Tips for reducing fuel
consumption
Fuel consumption depends largely on
your riding style. Consider the following
tips to reduce fuel consumption:

Avoid high engine speeds during
acceleration.

Avoid high engine speeds with no
load on the engine.

Turn the engine off instead of let-
ting it idle for an extended length of
time (e.g., in traffic jams, at traffic
lights or at railroad crossings).
EAU16830
Engine break-in
There is never a more important period
in the life of your engine than the period
between 0 and 1000 km (600 mi). For
this reason, you should read the follow-
ing material carefully.
Since the engine is brand new, do not
put an excessive load on it for the first
1000 km (600 mi). The various parts in
the engine wear and polish themselves
to the correct operating clearances.
During this period, prolonged full-throt-
tle operation or any condition that might
result in engine overheating must be
avoided.
EAU16950
0–150 km (0–90 mi)
Avoid prolonged operation above 1/3
throttle.
After every hour of operation, stop the
engine, and then let it cool for five to ten
minutes.
Vary the engine speed from time to
time. Do not operate the engine at one
set throttle position.
150–500 km (90–300 mi)
Avoid prolonged operation above 1/2
throttle.
Rev the engine freely through the
gears, but do not use full throttle at any
time.
500–1000 km (300–600 mi)
Avoid prolonged operation above 3/4
throttle.
CAUTION:

ECA10350
After 1000 km (600 mi) of operation,
the engine oil must be changed and
the oil strainer cleaned.
1000 km (600 mi) and beyond
Avoid prolonged full-throttle operation.
Vary the speed occasionally.
CAUTION:

ECA10270
If any engine trouble should occur
during the engine break-in period,
immediately have a Yamaha dealer
check the vehicle.

PERIODIC MAINTENANCE AND MINOR REPAIR
6-5
1
2
3
4
5
6
7
8
9

EAU18660
NOTE:


The air filter needs more frequent service if you are riding in unusually wet or dusty areas.

Hydraulic brake service

Regularly check and, if necessary, correct the brake fluid level.

Every two years replace the internal components of the brake master cylinder and caliper, and change the brake fluid.

Replace the brake hoses every four years and if cracked or damaged.
26

*
Air induction system

Check the air cut-off valve, reed valve, and hose for
damage.

Replace any damaged parts if necessary.
√√√√ √
27

*
Lights, signals and
switches

Check operation.

Adjust headlight beam.
√√√√√ √
NO. ITEM CHECK OR MAINTENANCE JOBODOMETER READING (
×
1000 km)
ANNUAL
CHECK
1 6 12 18 24