Yamaha Yzf R1 2007 Manual

							2007
MOTORCYCLE

 SERVICE MANUAL

 Model : YZFR1W

4C8281972000*4C8281972000* 
						

							EAS20040
YZFR1W
SERVICE MANUAL
©2006 by Yamaha Motor Co., Ltd.
First edition, October 2006
All rights reserved.
Any reproduction or unauthorized use without 
the written permission of Yamaha Motor Co., 
Ltd. is expressly prohibited. 
						

							EAS20070
NOTICE
This manual was produced by the Yamaha Motor Company, Ltd. primarily for use by Yamaha deal-
ers and their qualified mechanics. It is not possible to include all the knowledge of a mechanic in one 
manual. Therefore, anyone who uses this book to perform maintenance and repairs on Yamaha 
vehicles should have a basic understanding of mechanics and the techniques to repair these types 
of vehicles. Repair and maintenance work attempted by anyone without this knowledge is likely to 
render the vehicle unsafe and unfit for use.
This model has been designed and manufactured to perform within certain specifications in regard 
to performance and emissions. Proper service with the correct tools is necessary to ensure that the 
vehicle will operate as designed. If there is any question about a service procedure, it is imperative 
that you contact a Yamaha dealer for any service information changes that apply to this model. This 
policy is intended to provide the customer with the most satisfaction from his vehicle and to conform 
to federal environmental quality objectives.
Yamaha Motor Company, Ltd. is continually striving to improve all of its models. Modifications and 
significant changes in specifications or procedures will be forwarded to all authorized Yamaha deal-
ers and will appear in future editions of this manual where applicable.
NOTE:
• This Service Manual contains information regarding periodic maintenance to the emission control 
system. Please read this material carefully.
 Designs and specifications are subject to change without notice.
EAS20080
IMPORTANT MANUAL INFORMATION
Particularly important information is distinguished in this manual by the following.
The Safety Alert Symbol means ATTENTION! BECOME ALERT! YOUR 
SAFETY IS INVOLVED!
Failure to follow WARNING instructions could result in severe injury or death
 to 
the vehicle operator, a bystander or a person checking or repairing the vehicle.
A CAUTION indicates special precautions that must be taken to avoid damage 
to the vehicle.
A NOTE provides key information to make procedures easier or clearer.WARNING
CAUTION:
NOTE: 
						

							EAS20090
HOW TO USE THIS MANUAL
This manual is intended as a handy, easy-to-read reference book for the mechanic. Comprehensive 
explanations of all installation, removal, disassembly, assembly, repair and check procedures are 
laid out with the individual steps in sequential order.
 The manual is divided into chapters and each chapter is divided into sections. The current section 
title is shown at the top of each page “1”.
 Sub-section titles appear in smaller print than the section title “2”.
 To help identify parts and clarify procedure steps, there are exploded diagrams at the start of each 
removal and disassembly section “3”.
 Numbers are given in the order of the jobs in the exploded diagram. A number indicates a disas-
sembly step “4”.
 Symbols indicate parts to be lubricated or replaced “5”.
Refer to “SYMBOLS”.
 A job instruction chart accompanies the exploded diagram, providing the order of jobs, names of 
parts, notes in jobs, etc “6”.
 Jobs requiring more information (such as special tools and technical data) are described sequen-
tially “7”. 
						

							EAS20100
SYMBOLS
The following symbols are used in this manual 
for easier understanding.
NOTE:
The following symbols are not relevant to every 
vehicle.
1. Serviceable with engine mounted
2. Filling fluid
3. Lubricant
4. Special tool
5. Tightening torque
6. Wear limit, clearance
7. Engine speed
8. Electrical data
9. Engine oil
10.Gear oil
11.Molybdenum-disulfide oil
12.Wheel-bearing grease
13.Lithium-soap-based grease
14.Molybdenum-disulfide grease
15.Apply locking agent (LOCTITE®)
GME
BLSM
91011
12 13 14
15 16
LTNew
T R..
123
456
78
16.Replace the part 
						

							GENERAL INFORMATION
IDENTIFICATION.......................................................................................... 1-1
VEHICLE IDENTIFICATION NUMBER ................................................... 1-1
MODEL LABEL .............................. ......................................................... 1-1
FEATURES ................................................................................................... 1-2
FI SYSTEM ............................................................................................. 1-3
IMPORTANT INFORMATION ..................................................................... 1-12
PREPARATION FOR REMOVAL AND DISASSEMBLY ........................ 1-12
REPLACEMENT PARTS....................................................................... 1-12
GASKETS, OIL SEALS AND O- RINGS................................................ 1-12
LOCK WASHERS/PLATES AND COTTER PINS ................................. 1-12
BEARINGS AND OIL SEAL S ............................................................... 1-13
CIRCLIPS ............................................................................................. 1-13
CHECKING THE CONNECTIONS ............................................................. 1-14
SPECIAL TOOLS ........................................................................................ 1-15 
						

							IDENTIFICATION
1-1
EAS20130
IDENTIFICATION
EAS20140
VEHICLE IDENTIFICATION NUMBER
The vehicle identification number “1” is 
stamped into the right side of the steering 
head pipe.
EAS20150
MODEL LABEL
The model label “1” is affixed to the frame. This 
information will be needed to order spare 
parts. 
						

							FEATURES
1-2
EAS20170
FEATURES
OUTLINE OF THE FI SYSTEM
The main function of a fuel supply system is to provide fuel to the combustion chamber at the opti-
mum air-fuel ratio in accordance with the engine operating conditions and the atmospheric tempera-
ture. In the conventional carburetor system, the air-fuel ratio of the mixture that is supplied to the 
combustion chamber is created by the volume of the intake air and the fuel that is metered by the jet 
used in the respective carburetor.
Despite the same volume of intake air, the fuel volume requirement varies by the engine operating 
conditions, such as acceleration, deceleration, or operating under a heavy load. Carburetors that 
meter the fuel through the use of jets have been provided with various auxiliary devices, so that an 
optimum air-fuel ratio can be achieved to accommodate the constant changes in the operating con-
ditions of the engine.
As the requirements for the engine to deliver more performance and cleaner exhaust gases 
increase, it becomes necessary to control the air-fuel ratio in a more precise and finely tuned man-
ner. To accommodate this need, this model has adopted an electronically controlled fuel injection 
(FI) system, in place of the conventional carburetor system. This system can achieve an optimum 
air-fuel ratio required by the engine at all times by using a microprocessor that regulates the fuel 
injection volume according to the engine operating conditions detected by various sensors.
The adoption of the FI system has resulted in a highly precise fuel supply, improved engine 
response, better fuel economy, and reduced exhaust emissions.
1. Intake air temperature sensor
2. Engine trouble warning light
3. Air induction system solenoid
4. Atmospheric pressure sensor
5. Throttle position sensor (for throttle cable 
pulley)
6. Throttle servo motor
7. Throttle position sensor (for throttle valves)
8. Intake funnel servo motor
9. Injector
10.Intake air pressure sensor
11.Fuel pump
12.Lean angle sensor
13.ECU (engine control unit)14.Starting circuit cut-off relay
15.Speed sensor
16.EXUP servo motor
17.O
2 sensor
18.Crankshaft position sensor
19.Coolant temperature sensor
20.Spark plug
21.Ignition coil
22.Cylinder identification sensor 
						

							FEATURES
1-3
EAS4C81010
FI SYSTEM
The fuel pump delivers fuel to the fuel injector via the fuel filter. The pressure regulator maintains the 
fuel pressure that is applied to the fuel injector at only 324 kPa (3.24 kg/cm
2, 46.1 psi). Accordingly, 
when the energizing signal from the ECU energizes the fuel injector, the fuel passage opens, caus-
ing the fuel to be injected into the intake manifold only during the time the passage remain open. 
Therefore, the longer the length of time the fuel injector is energized (injection duration), the greater 
the volume of fuel that is supplied. Conversely, the shorter the length of time the fuel injector is ener-
gized (injection duration), the lesser the volume of fuel that is supplied.
The injection duration and the injection timing are controlled by the ECU. Signals that are input from 
the throttle position sensor (for throttle valves), throttle position sensor (for throttle cable pulley), 
crankshaft position sensor, intake air pressure sensor, intake air temperature sensor, coolant tem-
perature sensor, atmospheric pressure sensor, cylinder identification sensor, lean angle sensor, 
speed sensor and O
2 sensor enable the ECU to determine the injection duration. The injection tim-
ing is determined through the signals from the crankshaft position sensor. As a result, the volume of 
fuel that is required by the engine can be supplied at all times in accordance with the driving condi-
tions.
1. Fuel pump
2. Injector
3. Cylinder identification sensor
4. ECU (engine control unit)
5. Throttle position sensor (for throttle valves)
6. Throttle position sensor (for throttle cable 
pulley)
7. Speed sensor
8. Intake air temperature sensor
9. Lean angle sensor
10.O
2 sensor
11.Catalytic converter12.Coolant temperature sensor
13.Crankshaft position sensor
14.Intake air pressure sensor
15.Throttle servo motor
16.Throttle body
17.Atmospheric pressure sensor
18.Air filter case
19.Intake funnel servo motor
A. Fuel system
B. Air system
C. Control system 
						

							FEATURES
1-4
EAS4C81011
YCC-T (Yamaha Chip Controlled Throttle) YCC-I (Yamaha Chip Controlled Intake)
Mechanism characteristics
Yamaha developed the YCC-T and YCC-I system employing the most advanced electronic control 
technologies. Electronic control throttle systems have been used on automobiles, but Yamaha has 
developed a faster, more compact system specifically for the needs of a sports motorcycle. The 
Yamaha-developed system has a high-speed calculating capacity that produces computations of 
running conditions every 1/1000th of a second.
The YCC-T system is designed to respond to the throttle action of the rider by having the ECU 
instantaneously calculate the ideal throttle valve opening and generate signals to operate the motor-
driven throttle valves and thus actively control the intake air volume.
The ECU contains three CPUs with a capacity about five times that of conventional units, making it 
possible for the system to respond extremely quickly to the slightest adjustments made by the rider. 
In particular, optimized control of the throttle valve opening provides the optimum volume of intake 
air for easy-to-use torque, even in a high-revving engine.
The YCC-I system calculates the value from the engine revolution number and throttle opening rate, 
activates the intake air funnel with the electronic control motor drive to control the intake pipe length 
in order to gain the high power output in all revolution ranges from low speeds to high speeds.
Aims and advantages of using YCC-T system
 Increased engine power
By shortening the air intake path, higher engine speed is possible → Increased engine power.
 Improved driveability
Air intake volume is controlled according to the operating conditions → Improved throttle response 
to meet engine requirement.
Driving force is controlled at the optimal level according to the transmission gear position and 
engine speed → Improved throttle control.
 Engine braking control
Due to the throttle control, optimal engine braking is made possible.
 Simplified idle speed control (ISC) mechanism
The bypass mechanism and ISC actuator are eliminated → A simple mechanism is used to main-
tain a steady idle speed.
 Reduced weight
Compared to using a sub-throttle mechanism, weight is reduced.
1. Throttle position sensor (for throttle cable 
pulley)
2. Throttle servo motor
3. Throttle position sensor (for throttle valves)
4. Throttle valves
5. Throttle cable pulley with linkage guardA. To throttle grip