
PERIODIC MAINTENANCE AND ADJUSTMENT
6-33
6
3. 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.
EAU46811
Replacing the headlight bulb This model is equipped with a quartz
bulb headlight. If the headlight bulb
burns out, replace it as follows.NOTICE
ECA10650
Take 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 transpar-
ency of the glass, the luminosity
of the bulb, and the bulb life will
be adversely affected. Thor-
oughly clean off any dirt and fin-
gerprints on the headlight bulb
using a cloth moistened with al-
cohol 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 awattage higher than specified.1. Remove the headlight unit side
covers by removing the bolts on
each side.
Specified fuses:
Main fuse:
30.0 A
Headlight fuse:
20.0 A
Taillight fuse:
10.0 A
Signaling system fuse:
7.5 A
Ignition fuse:
10.0 A
Radiator fan fuse:
20.0 A
Fuel injection system fuse:
10.0 A
Backup fuse:
7.5 A
1. Do not touch the glass part of the bulb.
1. Headlight unit side cover
2. Bolt
1
1
22
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-41
64. Lower the rear wheel so that it is
on the ground, and then put the
sidestand down.
5. Adjust the drive chain slack. (See
page 6-25.)
6. Tighten the axle nut to the speci-
fied torque.
EAU25871
Troubleshooting Although Yamaha motorcycles receive
a thorough inspection before shipment
from the factory, trouble may occur dur-
ing operation. Any problem in the fuel,
compression, or ignition systems, for
example, can cause poor starting and
loss of power.
The following troubleshooting charts
represent quick and easy procedures
for checking these vital systems your-
self. However, should your motorcycle
require any repair, take it to a Yamaha
dealer, whose skilled technicians have
the necessary tools, experience, and
know-how to service the motorcycle
properly.
Use only genuine Yamaha replace-
ment parts. Imitation parts may look like
Yamaha parts, but they are often inferi-
or, have a shorter service life and can
lead to expensive repair bills.
WARNING
EWA15141
When checking the fuel system, do
not smoke, and make sure there are
no open flames or sparks in the ar-
ea, including pilot lights from waterheaters or furnaces. Gasoline or
gasoline vapors can ignite or ex-
plode, causing severe injury or
property damage.
Tightening torque:
Axle nut:
90 Nm (9.0 m·kgf, 65 ft·lbf)
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-42
6
EAU42361
Troubleshooting charts Starting problems or poor engine performance
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 plugs
and check the electrodes.3. Ignition
Wipe off with a dry cloth and correct the
spark plug gaps, or replace the spark plugs.
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.
U20SE0E0.book  Page 42  Friday, September 19, 2008  9:27 AM 

SPECIFICATIONS
8-3
8
Electrical system:Ignition system:
TCI (digital)
Charging system:
AC magnetoBattery:Model:
GT12B-4
Voltage, capacity:
12 V, 10.0 AhHeadlight:Bulb type:
Halogen bulbBulb voltage, wattage × quantity:Headlight:
12 V, 60/55 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 × 1
License plate light:
12 V, 5.0 W × 1
Meter lighting:
LED
Neutral indicator light:
LED
High beam indicator light:
LED
Oil level warning light:
LEDTurn signal indicator light:
LED
Coolant temperature warning light:
LED
Engine trouble warning light:
LED
Immobilizer system indicator light:
LED
Fuses:Main fuse:
30.0 A
Headlight fuse:
20.0 A
Taillight fuse:
10.0 A
Signaling system fuse:
7.5 A
Ignition fuse:
10.0 A
Radiator fan fuse:
20.0 A
Fuel injection system fuse:
10.0 A
Backup fuse:
7.5 A
U20SE0E0.book  Page 3  Friday, September 19, 2008  9:27 AM 

INDEXAAir filter element, replacing ................... 6-16
Anti-theft alarm (optional)...................... 3-11
Auxiliary light bulb, replacing ................ 6-37BBattery................................................... 6-31
Brake and clutch levers, checking and 
lubricating ........................................... 6-28
Brake and shift pedals, checking and 
lubricating ........................................... 6-27
Brake fluid, changing ............................ 6-24
Brake fluid level, checking .................... 6-23
Brake lever ............................................ 3-13
Brake pedal ........................................... 3-14CCables, checking and lubricating .......... 6-27
Care ........................................................ 7-1
Catalytic converter ................................ 3-16
Clutch lever ........................................... 3-13
Clutch lever free play, adjusting ............ 6-21
Coolant.................................................. 6-12
Coolant temperature warning light .......... 3-4
Cowling and panels, removing and 
installing................................................ 6-7DDimmer switch ...................................... 3-12
Drive chain, cleaning and lubricating .... 6-26
Drive chain slack ................................... 6-25EEngine break-in ....................................... 5-3
Engine idling speed............................... 6-17
Engine oil and oil filter cartridge .............. 6-9
Engine stop switch ................................ 3-12
Engine trouble warning light.................... 3-7
FFront and rear brake pads, checking .... 6-23
Front fork, checking .............................. 6-29
Fuel....................................................... 3-15
Fuel consumption, tips for reducing........ 5-3
Fuel tank breather/overflow hose ......... 3-16
Fuel tank cap ........................................ 3-14
Fuses, replacing ................................... 6-32HHandlebar position, adjusting ............... 3-19
Handlebar switches .............................. 3-11
Hazard switch ....................................... 3-12
Headlight bulb, replacing ...................... 6-33
Helmet holder ....................................... 3-18
High beam indicator light ........................ 3-4
Horn switch ........................................... 3-12IIdentification numbers ............................ 9-1
Ignition circuit cut-off system ................ 3-21
Immobilizer system ................................. 3-1
Immobilizer system indicator light........... 3-7
Indicator and warning lights .................... 3-4KKey identification number ....................... 9-1LLicense plate light bulb, replacing ........ 6-36MMain switch/steering lock........................ 3-2
Maintenance and lubrication, periodic .... 6-3
Maintenance, emission control system... 6-2
Matte color, caution ................................ 7-1
Model label ............................................. 9-2
Multi-function meter unit ......................... 3-7
NNeutral indicator light .............................. 3-4OOil level warning light .............................. 3-4PParking .................................................... 5-4
Part locations .......................................... 2-1
Pass switch ........................................... 3-12RRear brake light switch, adjusting ......... 6-22SSafety information ................................... 1-1
Seat ....................................................... 3-17
Shifting .................................................... 5-2
Shift pedal ............................................. 3-13
Shock absorber assembly, adjusting .... 3-19
Sidestand .............................................. 3-20
Sidestand, checking and lubricating...... 6-29
Spark plugs, checking ............................. 6-8
Specifications .......................................... 8-1
Starting the engine .................................. 5-1
Start switch............................................ 3-12
Steering, checking................................. 6-30
Storage.................................................... 7-3
Storage compartment............................ 3-18
Supporting the motorcycle .................... 6-38
Swingarm pivots, lubricating ................. 6-29TTail/brake light bulb, replacing .............. 6-35
Throttle cable free play, checking ......... 6-18
Throttle grip and cable, checking and 
lubricating ........................................... 6-27
Tires ...................................................... 6-19
Tool kit..................................................... 6-1
U20SE0E0.book  Page 1  Friday, September 19, 2008  9:27 AM