Yamaha YZFR1W 2007 Manuale utente

2007

MOTORCYCLE

SERVICE MANUAL

Model : YZFR1W

4C8281972000 *4C8281972000*

EAS20040

YZFR1W

SERVICE MANUAL

First edition, October 2006

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®)

BLS M

91011

12 13 14

15 16

LT New

123

456

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 SEALS ...............................................................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.O2sensor

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/cm2, 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 O2sensor 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.O2sensor

11.Catalytic converter

12.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 guard

A. To throttle grip

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