2003 YAMAHA YZF-R6 ignition

PERIODIC MAINTENANCE AND MINOR REPAIR
6-40
6
EAU04981
Replacing the fuses The main fuse and fuse box 1 are locat-
ed under the rider seat. (See page 3-19
for rider seat removal and installation
procedures.)Fuse box 2 is located under panel B.
(See page 6-7 for panel removal and
installation procedures.)If a fuse is blown, replace it as follows.
1. Turn the key to “OFF” and turn off
the electrical circuit in question.
2. Remove the blown fuse, and then
install a new fuse of the specified
amperage.1. Spare main fuse
2. Main fuse
3. Fuse box 1
4. Electronic fuel injection fuse
5. Turn signal light, taillight, license plate light,
auxiliary light and hazard fuse
6. Spare fuse
1. Fuse box 2
2. Headlight fuse
3. Radiator fan fuse
4. Ignition fuse
5. Signaling system fuse
6. Odometer, clock and immobilizer system fuse
(backup fuse)
7. Spare fuse (× 2)
Specified fuses:
Main fuse: 40 A
Fuse box 1:
Electronic fuel injection
fuse: 15 A
Turn signal light,
taillight, license plate
light, auxiliary light and
hazard fuse: 10 A
Fuse box 2:
Headlight fuse: 20 A
Signaling system fuse: 15 A
Radiator fan fuse: 15 A
Ignition fuse: 15 A
Odometer, clock and
immobilizer system fuse
(backup fuse): 10 A
U5SLE0.book Page 40 Wednesday, September 11, 2002 11:46 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-51
6
EAU03087
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
inferior, have a shorter service life and
can lead to expensive repair bills. U5SLE0.book Page 51 Wednesday, September 11, 2002 11:46 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-52
6
EAU02990
Troubleshooting charts Starting problems or poor engine performance
EW000125
WARNING
@ Keep away open flames and do not smoke while checking or working on the fuel system. @
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
Open the throttle halfway and operate
the electric starter.
U5SLE0.book Page 52 Wednesday, September 11, 2002 11:46 AM

SPECIFICATIONS
8-3
8
Maximum load* 193 kg
Tire air pressure (measured on
cold tires)
Up to 90 kg*
Front 250 kPa (2.50 kgf/cm
2, 2.50 bar)
Rear 250 kPa (2.50 kgf/cm2, 2.50 bar)
90 kg–maximum*
Front 250 kPa (2.50 kgf/cm2, 2.50 bar)
Rear 290 kPa (2.90 kgf/cm2, 2.90 bar)
High-speed riding*
Front 250 kPa (2.50 kgf/cm2, 2.50 bar)
Rear 250 kPa (2.50 kgf/cm2, 2.50 bar)
* Total weight of rider, passenger, cargo and accessories
Wheels
Front
Type Cast wheel
Size 17 M/C × MT 3.50
Rear
Type Cast wheel
Size 17 M/C × MT 5.50Brakes
Fr o n t
Type Dual disc brake
Operation Right hand
Fluid DOT 4
Rear
Type Single disc brake
Operation Right foot
Fluid DOT 4
Suspension
Front Telescopic fork
Rear Swingarm (link suspension)
Spring/shock absorber
Front Coil spring / oil damper
Rear Coil spring / gas-oil damper
Wheel travel
Front 120 mm
Rear 120 mm
Electrical system
Ignition system DC-C.D.I.
Charging system
Model A.C. magneto
Standard output 14 V, 300 W@ 5,000 r/min
U5SLE0.book Page 3 Wednesday, September 11, 2002 11:46 AM

SPECIFICATIONS
8-4
8
Battery
Model GT9B-4
Voltage, capacity 12 V, 8 Ah
Headlight typeHalogen bulb
Bulb voltage, wattage × quantity
Headlight 12 V, 55 W × 2
Tail/brake light LED
Turn signal light 12 V, 10 W × 4
Auxiliary light 12 V, 5 W × 2
License plate light 12 V, 5 W × 1
Meter lighting LED
Neutral indicator light LED
High beam indicator light LED
Turn signal indicator light LED
Fuel level warning light LED
Oil level warning light LED
Coolant temperature warning
light LED
Engine trouble warning light LED
Shift timing indicator light LED
Immobilizer system
indicator light LEDFuses
Main fuse 40 A
Headlight fuse 20 A
Signaling system fuse 15 A
Radiator fan fuse 15 A
Ignition fuse 15 A
Electronic fuel injection fuse 15 A
Turn signal light, taillight,
license plate light, auxiliary
light and hazard fuse 10 A
Odometer, clock and
immobilizer system fuse
(backup fuse) 10 A
U5SLE0.book Page 4 Wednesday, September 11, 2002 11:46 AM

10-INDEXAAir filter element, checking ..................... 6-19
Air intake duct ........................................ 6-22
Anti-theft alarm ...................................... 3-13
Auxiliary light bulb, replacing .................. 6-43BBattery ................................................... 6-38
Brake and clutch levers, checking and
lubricating ............................................ 6-35
Brake and shift pedals, checking and
lubricating ............................................ 6-35
Brake fluid, changing ............................. 6-32
Brake fluid level, checking...................... 6-31
Brake lever............................................. 3-16
Brake light switch (rear), adjusting ......... 6-29
Brake pads, checking............................. 6-30
Brake pedal............................................ 3-16
Brake pedal position, adjusting .............. 6-29CCables, checking and lubricating............ 6-34
Care.........................................................7-1
Catalytic converter ................................. 3-19
Clutch lever ............................................ 3-15
Clutch lever free play, adjusting ............. 6-27
Conversion table ......................................8-5
Coolant .................................................. 6-13
Changing .......................................... 6-15
Checking .......................................... 6-13
Coolant temperature warning light............3-6
Cowlings and panels, removing and
installing ................................................6-5
DDimmer switch ....................................... 3-13
Drive chain, lubricating .......................... 6-33
Drive chain slack ................................... 6-32
Adjusting .......................................... 6-33
Checking .......................................... 6-32EEngine break-in ....................................... 5-3
Engine idling speed ............................... 6-23
Engine oil and oil filter cartridge ............... 6-9
Engine stop switch................................. 3-14
Engine trouble warning light .................... 3-5FFront fork, adjusting ............................... 3-23
Front fork, checking ............................... 6-37
Fuel ....................................................... 3-17
Fuel consumption, tips for reducing ......... 5-3
Fuel level warning light ............................ 3-4
Fuel tank breather hose ......................... 3-18
Fuel tank cap ......................................... 3-17
Fuses, replacing .................................... 6-40HHandlebar switches ............................... 3-13
Hazard switch ........................................ 3-14
Headlight bulb, replacing ....................... 6-41
Helmet holders ...................................... 3-21
High beam indicator light ......................... 3-5
Horn switch ........................................... 3-14
IIdentification numbers ..............................9-1
Ignition circuit cut-off system ..................3-28
Immobilizer system..................................3-1
Immobilizer system indicator light.............3-6
Indicator and warning lights......................3-4KKey identification number .........................9-1LLicense plate light bulb, replacing...........6-45
Luggage strap holders ...........................3-27MMain switch/steering lock .........................3-2
Model label ..............................................9-2
Multi-function display................................3-8NNeutral indicator light ...............................3-5OOil level warning light ...............................3-5PParking.....................................................5-4
Part locations ...........................................2-1
Pass switch ............................................3-13
Periodic maintenance and
lubrication chart .....................................6-2
Pre-operation check list ............................4-1
U5SLE0.book Page 1 Wednesday, September 11, 2002 11:46 AM