2002 YAMAHA YZF-R6 ignition

PERIODIC MAINTENANCE AND MINOR REPAIR
6-37
6
EAU04225
Replacing the fuses The main fuse and the fuse box, which
contains the fuses for the individual cir-
cuits, are located under the rider seat.
(See page 3-13 for rider seat 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.
EC000103
CAUTION:_ Do not use a fuse of a higher amper-
age rating than recommended to
avoid causing extensive damage to
the electrical system and possibly a
fire. _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.
1. Headlight fuse
2. Radiator fan fuse
3. Ignition fuse
4. Signaling system fuse
5. Backup fuse (odometer)
6. Spare fuse (× 3)
1. Main fuse
2. Spare main fuse
Specified fuses:
Main fuse: 30 A
Headlight fuse: 20 A
Signaling system fuse: 15 A
Radiator fan fuse: 7.5 A
Ignition fuse: 15 A
Backup fuse (odometer): 7.5 A
U5MTE1.book Page 37 Monday, August 6, 2001 6:10 PM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-43
6
EAU03538
To install the rear wheel
1. Install the wheel by inserting the
wheel axle from the left hand side.
2. Install the drive chain onto the rear
sprocket, and then adjust the drive
chain slack. (See page 6-30 for
drive chain slack adjustment pro-
cedures.)
3. Install the axle nut, and then lower
the rear wheel so that it is on the
ground.
4. Install the brake caliper by install-
ing the bolts.NOTE:_ Make sure that there is enough space
between the brake pads before install-
ing the brake caliper onto the brake
disc. _5. Tighten the axle nut and the brake
caliper bolts to the specified
torques.
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. Tightening torques:
Axle nut:
150 Nm (15.0 m·kgf)
Brake caliper bolt:
40 Nm (4.0 m·kgf)
U5MTE1.book Page 43 Monday, August 6, 2001 6:10 PM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-44
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.
Operate the electric starter.4. Battery
The engine turns over
quickly.
The engine turns over
slowly.DryWet
The engine does not start.
Check the battery.Open the throttle halfway and operate
the electric starter.
The battery is good.Check the battery lead connections,
and charge the battery if necessary.
U5MTE1.book Page 44 Monday, August 6, 2001 6:10 PM

SPECIFICATIONS
8-3
8
Maximum load* 189 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 × MT 3.50
17 M/C × MT 3.50
Rear
Type Cast wheel
Size 17 × MT 5.50
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 130 mm
Rear 120 mm
Electrical system
Ignition system DC-C.D.I.
Charging system
Model A.C. magneto
Standard output 14 V, 320 W@ 5,000 r/min
U5MTE1.book Page 3 Monday, August 6, 2001 6:10 PM

SPECIFICATIONS
8-4
8
Battery
Model GT9B-4
Voltage, capacity 12 V, 8 Ah
Headlight typeQuar tz bulb (halogen)
Bulb voltage, wattage × quantity
Headlight 12 V, 60/55 W × 2
Tail/brake light 13.5 V, 1/6.1 W × 2 (LED)
Turn signal light 12 V, 21 W × 4
Auxiliary light 12 V, 5 W × 2
License plate light 12 V, 5 W × 1
Meter lighting 12 V, 1.4 W × 2
Neutral indicator light LED
High beam indicator light LED
Turn signal indicator light LED
Fuel level warning light LED
Oil level/coolant temperature
warning light LED
Fuses
Main fuse 30 A
Headlight fuse 20 A
Signaling system fuse 15 A
Radiator fan fuse 7.5 A
Ignition fuse 15 A
Backup fuse (odometer) 7.5 A
U5MTE1.book Page 4 Monday, August 6, 2001 6:10 PM

10-INDEXAAir filter element, checking ..................... 6-17
Air intake duct ........................................ 6-19
Anti-theft alarm ........................................3-7BBattery ................................................... 6-35
Brake and clutch levers, checking and
lubricating ............................................ 6-32
Brake fluid, changing ............................. 6-29
Brake fluid level, checking...................... 6-28
Brake lever............................................. 3-10
Brake light switch (rear), adjusting ......... 6-26
Brake pads, checking............................. 6-27
Brake pedal............................................ 3-10
Brake pedal, lubricating.......................... 6-32
Brake pedal position, adjusting .............. 6-26CCables, checking and lubricating............ 6-31
Carburetors, adjusting............................ 6-20
Care.........................................................7-1
Clutch lever ..............................................3-9
Clutch lever free play, adjusting ............. 6-25
Conversion table ......................................8-5
Coolant .................................................. 6-13
Changing .......................................... 6-14
Checking .......................................... 6-13
Cowlings and panel, removing and
installing ................................................6-6DDimmer switch .........................................3-8
Drive chain, lubricating ........................... 6-31
Drive chain slack ................................... 6-29
Adjusting .......................................... 6-30
Checking .......................................... 6-29EEngine break-in ....................................... 5-4
Engine oil and oil filter cartridge ............... 6-9
Engine stop switch................................... 3-8FFront and rear suspension settings ........ 3-22
Front fork, adjusting ............................... 3-17
Front fork, checking ............................... 6-33
Fuel ....................................................... 3-11
Fuel consumption, tips for reducing ......... 5-4
Fuel level warning light ............................ 3-2
Fuel tank breather hose ......................... 3-12
Fuel tank cap ......................................... 3-11
Fuses, replacing .................................... 6-37HHandlebar switches ................................. 3-8
Headlight bulb, replacing ....................... 6-38
Helmet holders ...................................... 3-15
High beam indicator light ......................... 3-2
Horn switch ............................................. 3-8IIdentification numbers ............................. 9-1
Idling speed, adjusting ........................... 6-20
Ignition circuit cut-off system.................. 3-24
Indicator and warning lights ..................... 3-2KKey identification number ........................ 9-1
LLight switch ..............................................3-8
Luggage strap holders ...........................3-23MMain switch/steering lock .........................3-1
Model label ..............................................9-2NNeutral indicator light ...............................3-2OOil level/coolant temperature warning
light ........................................................3-3PParking.....................................................5-5
Part locations ...........................................2-1
Pass switch ..............................................3-8
Periodic maintenance and lubrication
chart ......................................................6-3
Pre-operation check list ............................4-1SSafety information ....................................1-1
Seats ....................................................... 3-13
Passenger seat .................................. 3-14
Rider seat........................................... 3-13
Self-diagnosis device ...............................3-7
Shifting .....................................................5-3
Shift pedal ................................................3-9
Shift points (for Switzerland only) .............5-3
Shock absorber assembly, adjusting ......3-19
Sidestand ...............................................3-23
Sidestand, checking and lubricating .......6-33
U5MTE1.book Page 1 Monday, August 6, 2001 6:10 PM