2008 YAMAHA YZF-R1 ignition

PERIODIC MAINTENANCE AND MINOR REPAIR
6-34
6
CAUTION:
ECA10640
Do not use a fuse of a higher amper-
age rating than recommended to
avoid causing extensive damage to
the electrical system and possibly afire.
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.
EAU42930
Replacing a headlight bulb This model is equipped with quartz bulb
headlights. If a headlight bulb burns
out, replace it as follows.
To replace a high beam headlight
bulb
1. Remove panel C (if replacing the
left headlight bulb) or panel D (if re-
placing the right headlight bulb).
(See page 6-6.)
2. Disconnect the headlight coupler,
and then remove the bulb cover.
Specified fuses:
Main fuse:
50.0 A
Headlight fuse:
25.0 A
Signaling system fuse:
7.5 A
Ignition fuse:
15.0 A
Radiator fan fuse:
15.0 A × 2
Turn signal light fuse:
7.5 A
Fuel injection system fuse:
15.0 A
Backup fuse:
7.5 A
Electronic throttle valve fuse:
7.5 A
1. High beam headlight bulb
2. Low beam headlight bulb
U4C8E1E0.book Page 34 Wednesday, June 13, 2007 9:24 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-43
6
CAUTION:
ECA11070
Do not apply the brake after the
wheel has been removed together
with the brake disc, otherwise thebrake pads will be forced shut.
EAU25661
To install the rear wheel
1. Install the wheel and the brake cal-
iper bracket by inserting the wheel
axle from the left-hand side.NOTE:

Be sure to insert the retainer on the
brake caliper bracket into the slot
in the swingarm.


Make sure that there is enough
space between the brake pads be-fore installing the wheel.
2. Install the drive chain onto the rear
sprocket.
3. Install the axle nut, and then lower
the rear wheel so that it is on the
ground.
4. Adjust the drive chain slack. (See
page 6-25.)
5. Tighten the axle nut to the speci-
fied torque.
EAU25870
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.
1. Wheel axle
1. Retainer
2. Slot
Tightening torque:
Axle nut:
150 Nm (15.0 m·kgf, 110 ft·lbf)
U4C8E1E0.book Page 43 Wednesday, June 13, 2007 9:24 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-44
6
EAU42500
Troubleshooting charts Starting problems or poor engine performance
WARNING
EWA10840
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
Operate the electric starter.
U4C8E1E0.book Page 44 Wednesday, June 13, 2007 9:24 AM

SPECIFICATIONS
8-3
8
Electrical system:Ignition system:
Transistorized coil ignition (digital)
Charging system:
AC magnetoBattery:Model:
YTZ10S
Voltage, capacity:
12 V, 8.6 AhHeadlight:Bulb type:
Halogen bulbBulb voltage, wattage × quantity:Headlight:
12 V, 55.0 W × 4
Tail/brake light:
LED
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
Meter lighting:
LED
Neutral indicator light:
LED
High beam indicator light:
LED
Oil level warning light:
LEDTurn signal indicator light:
LED
Fuel level warning light:
LED
Coolant temperature warning light:
LED
Engine trouble warning light:
LED
Immobilizer system indicator light:
LED
Shift timing indicator light:
LED
Fuses:Main fuse:
50.0 A
Headlight fuse:
25.0 A
Signaling system fuse:
7.5 A
Ignition fuse:
15.0 A
Radiator fan fuse:
15.0 A × 2
Turn signal light fuse:
7.5 A
Fuel injection system fuse:
15.0 A
Backup fuse:
7.5 A
Electronic throttle valve fuse:
7.5 A
U4C8E1E0.book Page 3 Wednesday, June 13, 2007 9:24 AM

INDEX
AAir filter element, replacing ................... 6-16
Anti-theft alarm (optional) ..................... 3-13
Auxiliary light bulb, replacing ................ 6-38BBattery .................................................. 6-31
Brake and clutch levers,
checking and lubricating ..................... 6-27
Brake fluid, changing ............................ 6-24
Brake fluid level, checking .................... 6-23
Brake lever ........................................... 3-16
Brake pedal .......................................... 3-16CCables, checking and lubricating .......... 6-27
Care ........................................................ 7-1
Catalytic converter ................................ 3-19
Clutch lever........................................... 3-15
Clutch lever free play, adjusting ........... 6-22
Coolant ................................................. 6-13
Coolant temperature warning light.......... 3-5
Cowlings and panels,
removing and installing......................... 6-6DDimmer switch ...................................... 3-14
Drive chain, cleaning and lubricating .... 6-26
Drive chain slack .................................. 6-25EEngine break-in ...................................... 5-3
Engine idling speed, checking .............. 6-18
Engine oil and oil filter cartridge ........... 6-10
Engine stop switch................................ 3-14
Engine trouble warning light ................... 3-7
EXUP system ....................................... 3-25
FFront and rear brake pads, checking .... 6-23
Front fork, adjusting .............................. 3-21
Front fork, checking...............................6-29
Fuel ....................................................... 3-17
Fuel consumption, tips for reducing ........ 5-3
Fuel level warning light............................ 3-4
Fuel tank breather/overflow hose .......... 3-18
Fuel tank cap......................................... 3-17
Fuses, replacing .................................... 6-32HHandlebar switches ............................... 3-14
Hazard switch........................................ 3-15
Headlight bulb, replacing....................... 6-34
Helmet holders ...................................... 3-20
High beam indicator light......................... 3-4
Horn switch ........................................... 3-14IIdentification numbers ............................. 9-1
Ignition circuit cut-off system ................. 3-26
Immobilizer system .................................3-1
Immobilizer system indicator light ........... 3-7
Indicator and warning lights .................... 3-4KKey identification number ........................ 9-1LLicense plate light bulb, replacing ......... 6-38
Luggage strap holders .......................... 3-25MMain switch/steering lock ........................ 3-2
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 ........................................... 3-14
Periodic maintenance and
lubrication chart .................................... 6-2
Pre-operation check list .......................... 4-2RRear brake light switch, adjusting ......... 6-22SSafety information ................................... 1-1
Seats..................................................... 3-19
Shifting .................................................... 5-2
Shift pedal ............................................. 3-15
Shift pedal, checking and lubricating .... 6-28
Shift timing indicator light ........................ 3-7
Shock absorber assembly, adjusting .... 3-22
Sidestand .............................................. 3-25
Sidestand, checking and lubricating ..... 6-28
Spark plugs, checking............................. 6-9
Specifications.......................................... 8-1
Starting the engine.................................. 5-1
Start switch ........................................... 3-14
Steering, checking ................................ 6-30
Storage ................................................... 7-4
Supporting the motorcycle .................... 6-39
Swingarm pivots, lubricating ................. 6-29TTail/brake light ...................................... 6-37
Throttle cable free play, checking ......... 6-18
U4C8E1E0.book Page 1 Wednesday, June 13, 2007 9:24 AM