Yamaha Yzf R1 2007 Manual

FEATURES
1-5
Aims and advantages of using YCC-I system
 Improvement of the engine power characteristics
The high power design in all ranges is now provided by having both two features of the short 
intake function to ensure the power at the high speed revolution of engine, and the long intake 
function to ensure the power in the practical use range.
 Intake pipe length switching control using the motor
The intake pipe length switching operation in a minute time is now available by means of the motor...

FEATURES
1-6
YCC-T/YCC-I system outline
1.  Throttle position sensor (for throttle cable 
pulley)
2. Throttle servo motor
3. Throttle position sensor (for throttle valves)
4. ECU (engine control unit)
5. ETV main CPU (32 bit)
6. ETV sub CPU (16 bit)
7. FI CPU (32 bit)
8. Throttle servo motor driver
9. Throttle servo motor driver operation sens-
ing/shut off circuit
10.Throttle servo motor driver operation sensing 
feedback/emergency stop
11.Emergency stop
12.Engine revolution (pulse signal)
13.Sensor...

FEATURES
1-7
YCC-T/YCC-I control outline
1. Throttle position sensor (for throttle cable 
pulley)
2. Throttle position sensor (for throttle valves)
3. Crankshaft position sensor
4. Speed sensor
5. Coolant temperature sensor
6. Neutral switch
7. Atmospheric pressure sensor
8. Accelerator position (two signals)
9. Throttle position (two signals)
10.Engine revolution
11.Vehicle speed
12.Coolant temperature
13.Neutral/In gear
14.Atmospheric pressure15.Throttle servo motor
16.ECU (engine control unit)
17.Base...

FEATURES
1-8
EAS4C81024
INSTRUMENT FUNCTIONS
Multi-function meter unit
WARNING
EWA4C81008
Be sure to stop the vehicle before making 
any setting changes to the multi-function 
meter unit.
The multi-function meter unit is equipped with 
the following:
 a speedometer (which shows the riding 
speed)
 a tachometer (which shows engine speed)
 an odometer (which shows the total distance 
traveled)
 two tripmeters (which show the distance trav-
eled since they were last set to zero)
 a fuel reserve...

FEATURES
1-9
4. Push the “RESET” button to set the min-
utes.
5. Push the “SELECT” button and then 
release it to start the clock.
Odometer, tripmeter, and stopwatch modes
Push the “SELECT” button to switch the dis-
play between the odometer mode “ODO” and 
the tripmeter modes “TRIP A” and “TRIP B” 
and the stopwatch mode in the following order:
TRIP A → TRIP B → ODO → Stopwatch → 
TRIP A
If the fuel level warning light comes on, the 
odometer display will automatically change to 
the fuel reserve...

FEATURES
1-10
Air intake temperature display
The air intake temperature display indicates 
the temperature of the air drawn into the air fil-
ter case. Push the “RESET” button to switch 
the coolant temperature display to the air 
intake temperature display.
NOTE:
 Even if the air intake temperature is set to be 
displayed, the coolant temperature warning 
light comes on when the engine overheats.
 When the key is turned to “ON”, the coolant 
temperature is automatically displayed, even 
if the air...

FEATURES
1-11
This mode cycles through five control func-
tions, allowing you to make the following set-
tings in the order listed below.
Display brightness:
 This function allows you to adjust the bright-
ness of the displays and tachometer to suit 
the outside lighting conditions.
 Shift timing indicator light activity:
This function allows you to choose whether 
or not the indicator light should be activated 
and whether it should flash or stay on when 
activated.
 Shift timing indicator light...

IMPORTANT INFORMATION
1-12
EAS20180
IMPORTANT INFORMATION
EAS20190
PREPARATION FOR REMOVAL AND DISAS-
SEMBLY
1. Before removal and disassembly, remove 
all dirt, mud, dust and foreign material.
2. Use only the proper tools and cleaning 
equipment.
Refer to SPECIAL TOOLS on page 1-15.
3. When disassembling, always keep mated 
parts together. This includes gears, cylin-
ders, pistons and other parts that have 
been “mated” through normal wear. Mated 
parts must always be reused or replaced 
as an...

IMPORTANT INFORMATION
1-13
EAS20230
BEARINGS AND OIL SEALS
Install bearings “1” and oil seals “2” so that the 
manufacturer’s marks or numbers are visible. 
When installing oil seals, lubricate the oil seal 
lips with a light coat of lithium-soap-based 
grease. Oil bearings liberally when installing, if 
appropriate.
CAUTION:
ECA13300
Do not spin the bearing with compressed 
air because this will damage the bearing 
surfaces.
EAS20240
CIRCLIPS
Before reassembly, check all circlips carefully 
and replace...

CHECKING THE CONNECTIONS
1-14
EAS20250
CHECKING THE CONNECTIONS
Check the leads, couplers, and connectors for 
stains, rust, moisture, etc.
1. Disconnect:
 Lead
 Coupler
 Connector
2. Check:
 Lead
 Coupler
 Connector
Moisture → Dry with an air blower.
Rust/stains → Connect and disconnect 
several times.
3. Check:
 All connections
Loose connection → Connect properly.
NOTE:
If the pin “1” on the terminal is flattened, bend 
it up.
4. Connect:
 Lead
 Coupler
 Connector
NOTE:
Make sure all...