2007 YAMAHA CYGNUS 125 auxiliary battery

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

DESCRIPTION
2-2
2
3
4
5
6
7
8
9

EAU10420
Right view
43 2
1
5

1. Battery (page 6-22)
2. Front turn signal light (page 6-26)
3. Auxiliary light bulb (page 6-27)
4. Headlight (page 6-25)
5. Centerstand (page 6-20)

SPECIFICATIONS
8-2
1
2
3
4
5
6
7
8
9

Trail:
90.0 mm (3.54 in)
Front tire:
Type:
Tubeless
Size:
110/70-12 47L
Manufacturer/model:
CHENG SHIN / C-992N
Rear tire:
Type:
Tubeless
Size:
120/70-12 58L
Manufacturer/model:
CHENG SHIN / C-6007
Maximum load:
172 kg (379 lb)
* (Total weight of rider, passenger, cargo
and accessories)
Tire air pressure (measured on cold
tires):
Loading condition:
0–90 kg (0–198 lb)
Front:
175 kPa (25 psi) (1.75 kgf/cm
2

)
Rear:
200 kPa (29 psi) (2.00 kgf/cm
2

)
Loading condition:
90–172 kg (198–379 lb)
Front:
200 kPa (29 psi) (2.00 kgf/cm
2

)Rear:
225 kPa (33 psi) (2.25 kgf/cm
2

)
Front wheel:
Wheel type:
Cast wheel
Rim size:
J12 X MT2.75
Rear wheel:
Wheel type:
Cast wheel
Rim size:
J12 X MT3.00
Front brake:
Type:
Single disc brake
Operation:
Right hand operation
Recommended fluid:
DOT 4
Rear brake:
Type:
Drum brake
Operation:
Left hand operation
Front suspension:
Type:
Telescopic fork
Spring/shock absorber type:
Coil spring/oil damper
Wheel travel:
78.0 mm (3.07 in)
Rear suspension:
Type:
Unit swing
Spring/shock absorber type:
Coil spring/oil damper
Wheel travel:
95.5 mm (3.76 in)
Electrical system:
Ignition system:
Transistorized coil ignition (digital)
Charging system:
AC magneto
Battery:
Model:
MF (YT7B-BS)
Voltage, capacity:
12 V, 6.5 Ah
Headlight:
Bulb type:
Halogen bulb
Bulb voltage, wattage
×
quantity:
Headlight:
12 V, 60 W/55.0 W
×
1
Tail/brake light:
12 V, 5.0 W/21.0 W
×
1
Front turn signal light:
12 V, 10.0 W
×
2
Rear turn signal light:
12 V, 10.0 W
×
2
Auxiliary light:
12 V, 5.0 W
×
2
License plate light:
12 V, 5.0 W
×
1

INDEX
A
Acceleration and deceleration................... 5-2
Air filter and V-belt case air filter
elements ............................................... 6-12
Auxiliary light bulb, replacing .................. 6-27
B
Battery..................................................... 6-22
Brake fluid, changing .............................. 6-19
Brake fluid level, checking ...................... 6-18
Brake lever, front....................................... 3-6
Brake lever, rear ....................................... 3-7
Brake levers, lubricating.......................... 6-20
Brake pads and shoes, checking ............ 6-17
Braking ...................................................... 5-2
C
Cables, checking and lubricating ............ 6-19
Care .......................................................... 7-1
Catalytic converter .................................... 3-9
Centerstand and sidestand, checking and
lubricating ............................................. 6-20
D
Dimmer switch .......................................... 3-6
E
Engine break-in ......................................... 5-3
Engine oil and oil strainer.......................... 6-9
Engine trouble warning light...................... 3-3
F
Final transmission oil .............................. 6-11
Front fork, checking ................................ 6-21
Fuel ........................................................... 3-8
Fuel consumption, tips for reducing .......... 5-3
Fuel tank cap ............................................ 3-7
Fuses, replacing...................................... 6-24
H
Handlebar switches ...................................3-5
Headlight bulb, replacing .........................6-25
High beam indicator light ...........................3-2
Horn switch ................................................3-6
I
Identification numbers................................9-1
Indicator and warning lights .......................3-2
K
Keyhole cover ............................................3-2
Key identification number ..........................9-1
Kickstarter ..................................................3-9
M
Main switch ................................................3-1
Matte color, caution ...................................7-1
Model label ................................................9-2
Multi-function display .................................3-3
P
Panels, removing and installing .................6-6
Parking.......................................................5-4
Part locations .............................................2-1
Periodic maintenance and lubrication
chart ........................................................6-3
Pre-operation check list .............................4-2
R
Rear brake lever free play, adjusting .......6-16
S
Safe-riding points .......................................1-4
Safety information ......................................1-1
Seat ...........................................................3-9
Sidestand .................................................3-11
Sidestand switch operation check ...........3-12
Spark plug, checking .................................6-7
Specifications.............................................8-1Speedometer ............................................. 3-3
Starting off ................................................. 5-2
Starting the engine .................................... 5-1
Start switch ................................................ 3-6
Steering, checking ................................... 6-21
Storage ...................................................... 7-3
Storage compartments ............................ 3-10
T
Tail/brake light bulb or rear turn signal
light bulb, replacing ............................... 6-27
Throttle cable free play, checking............ 6-14
Throttle grip and cable, checking and
lubricating .............................................. 6-20
Tires ........................................................ 6-14
Tool kit ....................................................... 6-1
Troubleshooting....................................... 6-28
Troubleshooting chart.............................. 6-29
Turn signal indicator light .......................... 3-2
Turn signal light bulb (front), replacing .... 6-26
Turn signal switch...................................... 3-6
V
Valve clearance ....................................... 6-14
Vehicle identification number .................... 9-1
W
Wheel bearings, checking ....................... 6-22
Wheels .................................................... 6-16