This manual was produced by the Yamaha Motor Company, Ltd. primarily for use by Yamaha dealers
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 dealers and
will appear in future editions of this manual where applicable.
IP
• 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.
EAS20081
IMPORTANT MANUAL INFORMATION
Particularly important information is distinguished in this manual by the following notations.
This is the safety alert symbol. It is used to alert you to potential personal injury hazards. Obey all safety messages that follow this symbol to
avoid possible injury or death.
WARNING
NOTICE
TIP
A WARNING indicates a hazardous situation which, if not avoided, could
result in death or serious injury.
A NOTICE indicates special precautions that must be taken to avoid
damage to the vehicle or other property.
A TIP provides key information to make procedures easier or clearer.
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
“1” is shown at the top of each page.
• Sub-section titles “2” appear in smaller print than the section title.
• To help identify parts and clarify procedure steps, there are exploded diagrams “3” at the start of each
removal and disassembly section.
• Numbers “4” are given in the order of the jobs in the exploded diagram. A number indicates a disassembly step.
• Symbols “5” indicate parts to be lubricated or replaced.
Refer to “SYMBOLS”.
• A job instruction chart “6” accompanies the exploded diagram, providing the order of jobs, names of
parts, notes in jobs, etc.
• Jobs “7” requiring more information (such as special tools and technical data) are described sequentially.
1
3
4
5
6
7
2
EAS20100
T
SYMBOLS
The following symbols are used in this manual
for easier understanding.
IP
The following symbols are not relevant to every
vehicle.
CHECKING THE CONNECTIONS ................................................................1-11
1
SPECIAL TOOLS ..........................................................................................1-12
EAS20130
IDENTIFICATION
EAS20140
VEHICLE IDENTIFICATION NUMBER
The vehicle identification number “1” is stamped
into the right side of the steering head pipe.
1
EAS20150
MODEL LABEL
The model label “1” is affixed to the frame. This
information will be needed to order spare parts.
IDENTIFICATION
1
1-1
FEATURES
EAS20170
FEATURES
EAS3D81037
OUTLINE OF THE FI SYSTEM
The main function of a fuel supply system is to provide fuel to the combustion chamber at the optimum
air-fuel ratio in accordance with the engine operating conditions and the atmospheric temperature. 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 airfuel ratio can be achieved to accommodate the constant changes in the operating conditions 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 manner. 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.
123 45678910111213
1. Air temperature sensor
2. Engine trouble warning light
3. Intake air pressure sensor
4. Rear cylinder ignition coil
5. Front cylinder ignition coil
6. Throttle position sensor
7. Spark plug
8. Speed sensor
9. Lean angle sensor
10.Relay unit (fuel pump relay)
11.Fuel pump
12.ECU (engine control unit)
13.O
sensor
2
14.Rear cylinder injector
14151617718
15.ISC (idle speed control) unit
16.Crankshaft position sensor
17.Front cylinder injector
18.Coolant temperature sensor
1-2
FEATURES
EAS3D81038
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 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, causing the fuel
to be injected into the intake manifold only during the time the passage remains 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 energized (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, crankshaft position sensor, intake air pressure sensor, air temperature sensor,
coolant temperature sensor, lean angle sensor, speed sensor and O
mine the injection duration. The injection timing 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 conditions.
Illustration is for reference only.
1
C
4
Rear
A
Front
2
3
sensor enable the ECU to deter-
2
65
7
8
10
9
15
B
1. Fuel pump
2. Fuel injector
3. Ignition coil
4. ECU (engine control unit)
5. Air temperature sensor
6. Lean angle sensor
7. ISC (idle speed control) unit
8. Throttle position sensor
9. O
sensor
2
10.Coolant temperature sensor
11.Catalytic converter
12.Crankshaft position sensor
13.Intake air pressure sensor
11
14
13
12
14.Throttle body
15.Air filter case
A. Fuel system
B. Air system
C. Control system
1-3
FEATURES
T
T
EAS3D81033
INSTRUMENT FUNCTIONS
Multi-function meter unit (for
XVS13AA(C)/XVS13CTA(C))
EWA3D8A001
WARNING
Be sure to stop the vehicle before making
any setting changes to the multi-function
meter unit. Changing settings while riding
can distract the operator and increase the
risk of an accident.
The multi-function meter unit is equipped with
the following:
• a speedometer
• an odometer
• two tripmeters (which show the distance trav-
eled since they were last set to zero)
• a fuel reserve tripmeter (which shows the distance traveled on the fuel reserve)
• a clock
• a self-diagnosis device
• a brightness control mode
IP
Be sure to turn the key to “ON” before using the
“SELECT” switch “/” and “RESET” switch,
except for setting the brightness control mode.
1
SELECT
RESET
1. “SELECT” switch “/”
2. “RESET” switch
2
Speedometer
1
1. Speedometer
When the key is turned to “ON”, the speedometer needle will sweep once across the speed
range and then return to zero in order to test the
electrical circuit.
Odometer, tripmeters, fuel reserve tripmeter
and clock
Push the “” side of the “SELECT” switch to
switch the display between the odometer mode
“Odo”, the tripmeter modes “Trip 1” and “Trip 2”
and the clock mode in the following order:
Odo → Trip 1 → Trip 2 → Clock → Odo
IP
• Push the “” side of the “SELECT” switch to
switch the display in the reverse order.
• Push the “RESET” switch for less than one
second to display the clock for five seconds, regardless of the currently selected display
mode.
If the fuel level warning light comes on, the display will automatically change to the fuel reserve
tripmeter mode “Trip F” and start counting the
distance traveled from that point. In that case,
push the “” side of the “SELECT” switch to
switch the display between the various tripmeter, odometer, and clock modes in the following
order:
1-4
FEATURES
T
Trip F→ Trip 1 → Trip 2 → Clock → Odo → Trip
F
IP
Push the “” side of the “SELECT” switch to
switch the display in the reverse order.
To reset a tripmeter, select it by pushing the “”
or “” side of the “SELECT” switch, and then
push the “RESET” switch for at least one second. If you do not reset the fuel reserve tripmeter
manually, it will reset itself automatically, and the
display will return to the prior mode after refueling and traveling 5 km (3 mi).
To set the clock:
1
1. Clock
1. Push the “” or “” side of the “SELECT”
switch to change the display to the clock
mode.
2. Push the “” side of the “SELECT” switch
and the “RESET” switch together for at least
two seconds.
3. When the hour digits start flashing, push the
“” or “” side of the “SELECT” switch to
set the hours.
4. Push the “RESET” switch, and the minute
digits will start flashing.
5. Push the “” or “” side of the “SELECT”
switch to set the minutes.
6. Push the “RESET” switch and then release it
to start the clock.
Self-diagnosis device
1
1. Fault code display
This model is equipped with a self-diagnosis device for various electrical circuits.
If any of those circuits are not working correctly,
the engine trouble warning light will come on,
and then the odometer/tripmeter/clock display
will indicate a two-digit fault code.
If the odometer/tripmeter/clock display indicates
any fault codes, note the code number, and then
check the vehicle. Refer to “FUEL INJECTION
SYSTEM” on page 8-45.
ECA3D8A003
NOTICE
If the display indicates a fault code, the vehicle should be checked as soon as possible
in order to avoid engine damage.
Brightness control mode
1
2
1. Speedometer panel
2. Brightness level
This function allows you to adjust the brightness
of the speedometer panel to suit the outside
lighting conditions.
To set the brightness:
1-5
1. Turn the key to “OFF”.
T
2. Push and hold the “” side of the “SELECT”
switch.
3. Turn the key to “ON”, and then release the
“SELECT” switch after five seconds or more.
4. Push the “” or “” side of the “SELECT”
switch to select the desired brightness level.
5. Push the “RESET” switch to confirm the selected brightness level. The display will return
to the odometer, tripmeter or clock mode.
Be sure to stop the vehicle before making
any setting changes to the multi-function
meter unit. Changing settings while riding
can distract the operator and increase the
risk of an accident.
The multi-function meter unit is equipped with
the following:
• a speedometer
• an odometer
• two tripmeters (which show the distance trav-
eled since they were last set to zero)
• a fuel reserve tripmeter (which shows the distance traveled on the fuel reserve)
• a fuel meter
• a clock
• a self-diagnosis device
• a brightness control mode
IP
Be sure to turn the key to “ON” before using the
“SELECT” and “RESET” switches, except for
setting the brightness control mode.
1. “SELECT” switch
2. “RESET” switch
Speedometer
1
1. Speedometer
When the key is turned to “ON”, the speedometer needle will sweep once across the speed
range and then return to zero in order to test the
electrical circuit.
Odometer, tripmeters, fuel reserve tripmeter,
fuel meter and clock
Push the “SELECT” switch to change the display
between the odometer mode “Odo”, the tripmeter modes “Trip 1” and “Trip 2”, the fuel meter
mode, and the clock mode in the following order:
Odo → Trip 1 → Trip 2 → Fuel meter → Clock
→ Odo
1-6
FEATURES
T
T
IP
Push the “RESET” switch for less than one second to display the clock for five seconds, regardless of the currently selected display mode.
If the fuel level warning light comes on, the display will automatically change to the fuel reserve
tripmeter mode “Trip F” and start counting the
distance traveled from that point. In that case,
push the “SELECT” switch to change the display
between the various tripmeter, odometer, fuel
meter, and clock modes in the following order:
Trip F → Trip 1 → Trip 2 → Fuel meter → Clock
→ Odo → Trip F
To reset a tripmeter, select it by pushing the “SELECT” switch, and then push the “RESET”
switch for at least one second. If you do not reset
the fuel reserve tripmeter manually, it will reset
itself automatically, and the display will return to
the prior mode after refueling and traveling 5 km
(3 mi).
Fuel meter
1.
To set the clock
1
1. Clock
1. Push the “SELECT” switch to change the display to the clock mode.
2. Push the “SELECT” and “RESET” switches
together for at least three seconds.
3. When the hour digits start flashing, push the
“SELECT” switch to set the hours.
4. Push the “RESET” switch, and the minute
digits will start flashing.
5. Push the “SELECT” switch to set the minutes.
6. Push the “RESET” switch and then release it
to start the clock.
1
2
1. Fuel meter
2. Segment
The fuel meter indicates the amount of fuel in
the fuel tank. The display segments of the
fuel meter disappear towards “E” (Empty) as
the fuel level decreases. When the fuel meter
changes from two segments to only one segment, approximately 5.0 L (1.32 US gal, 1.1
Imp.gal) of fuel remains in the fuel tank. Be
sure to refuel as soon as possible.
IP
If the display is showing another function when
this occurs, the display will automatically change
to the fuel meter mode.
The fuel level warning light comes on and the
display switches to the fuel reserve tripmeter
mode “Trip F” when the fuel level is very low.
Refuel as soon as possible to avoid running
out of fuel.
Self-diagnosis device
1
1. Fault code display
This model is equipped with a self-diagnosis device for various electrical circuits.
If a problem is detected in any of those circuits,
the engine trouble warning light will come on and
the display will indicate a fault code.
If the display indicates any fault codes, note the
code number, and then check the vehicle. Refer
to “FUEL INJECTION SYSTEM” on page 8-45.
ECA27D1003
NOTICE
If the display indicates a fault code, the vehicle should be checked as soon as possible
in order to avoid engine damage.
1-7
Brightness control mode
1
1. Brightness level
This function allows you to adjust the brightness
of the multi-function meter unit panel to suit the
outside lighting conditions.
To set the brightness
1. Turn the key to “OFF”.
2. Push and hold the “SELECT” switch.
3. Turn the key to “ON”, and then release the
“SELECT” switch after five seconds.
4. Adjust the multi-function meter unit panel
brightness level by pushing the “SELECT”
switch.
5. Push the “RESET” switch.
The display will change to the prior mode.
FEATURES
1-8
EAS20180
IMPORTANT INFORMATION
EAS20190
PREPARATION FOR REMOVAL AND
DISASSEMBLY
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 1-12.
3. When disassembling, always keep mated
parts together. This includes gears, cylinders,
pistons and other parts that have been “mat-
ed” through normal wear. Mated parts must
always be reused or replaced as an assembly.
IMPORTANT INFORMATION
EAS20210
GASKETS, OIL SEALS AND O-RINGS
1. When overhauling the engine, replace all
gaskets, seals and O-rings. All gasket surfaces, oil seal lips and O-rings must be cleaned.
2. During reassembly, properly oil all mating
parts and bearings and lubricate the oil seal
lips with grease.
4. During disassembly, clean all of the parts and
place them in trays in the order of disassembly. This will speed up assembly and allow for
the correct installation of all parts.
5. Keep all parts away from any source of fire.
EAS20200
REPLACEMENT PARTS
Use only genuine Yamaha parts for all replacements. Use oil and grease recommended by
Yamaha for all lubrication jobs. Other brands
may be similar in function and appearance, but
inferior in quality.
1. Oil
2. Lip
3. Spring
4. Grease
EAS20220
LOCK WASHERS/PLATES AND COTTER
PINS
After removal, replace all lock washers/plates
“1” and cotter pins. After the bolt or nut has been
tightened to specification, bend the lock tabs
along a flat of the bolt or nut.
1-9
EAS20230
BEARINGS AND OIL SEALS
Install bearings and oil seals so that the manufacturer’s marks or numbers are visible. When
installing oil seals “1”, lubricate the oil seal lips
with a light coat of lithium-soap-based grease.
Oil bearings liberally when installing, if appropriate.
ECA13300
NOTICE
Do not spin the bearing with compressed air
because this will damage the bearing surfaces.
IMPORTANT INFORMATION
EAS20240
CIRCLIPS
Before reassembly, check all circlips carefully
and replace damaged or distorted circlips. Always replace piston pin clips after one use.
When installing a circlip “1”, make sure the
sharp-edged corner “2” is positioned opposite
the thrust “3” that the circlip receives.
1-10
EAS20250
T
T
T
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.
CHECKING THE CONNECTIONS
Pocket tester
90890-03112
IP
• If there is no continuity, clean the terminals.
• When checking the wire harness, perform
steps (1) to (3).
• As a quick remedy, use a contact revitalizer
available at most part stores.
Analog pocket tester
YU-03112-C
3. Check:
• All connections
Loose connection → Connect properly.
IP
If the pin “1” on the terminal is flattened, bend it
up.
4. Connect:
• Lead
• Coupler
• Connector
IP
Make sure all connections are tight.
5. Check:
• Continuity
(with the pocket tester)
1-11
SPECIAL TOOLS
T
EAS20260
SPECIAL TOOLS
The following special tools are necessary for complete and accurate tune-up and assembly. Use only
the appropriate special tools as this will help prevent damage caused by the use of inappropriate tools
or improvised techniques. Special tools, part numbers or both may differ depending on the country.
When placing an order, refer to the list provided below to avoid any mistakes.
IP
• For U.S.A. and Canada, use part numbers starting with “YM-”, “YU-”, or “ACC-”.
• For others, use part numbers starting with “90890-”.
Tool name/Tool No.Illustration
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
Thickness gauge
90890-03180
Feeler gauge set
YU-26900-9
Tappet adjusting tool
90890-04154
Six piece tappet set
YM-A5970
Recommended engine oil gradeAPI service SG type or higher, JASO standard
MA
Engine oil quantity
Total amount3.70 L (3.91 US qt, 3.26 Imp.qt)
Without oil filter cartridge replacement3.20 L (3.38 US qt, 2.82 Imp.qt)
With oil filter cartridge replacement3.40 L (3.59 US qt, 2.99 Imp.qt)
Oil filter
Oil filter typeCartridge
Oil pump
Oil pump typeTrochoid
Inner-rotor-to-outer-rotor-tip clearanceLess than 0.12 mm (0.0047 in)
Limit0.20 mm (0.0079 in)
Outer-rotor-to-oil-pump-housing clearance0.09–0.19 mm (0.0035–0.0075 in)
Limit0.26 mm (0.0102 in)
Oil-pump-housing-to-inner-and-outer-rotor
clearance0.03–0.10 mm (0.0012–0.0039 in)
Limit0.17 mm (0.0067 in)
Bypass valve opening pressure80.0–120.0 kPa (0.80–1.20 kgf/cm², 11.6–17.4
psi)
2-3
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