Checking The Throttle Body Joints; Replacing The Throttle Bodies; Installing The Injectors; Checking The Injector Pressure - Yamaha FJR1300A(D) Service Manual

5. Adjust:
• Throttle bodies synchronizing
Out of specification → Replace the throttle
bodies.
Refer to "SYNCHRONIZING THE THROT-
TLE BODIES" on page 3-8.
EAS21010

CHECKING THE THROTTLE BODY JOINTS

1. Check:
• Throttle body joints "1"
Cracks/damage → Replace.
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EAS1MC1067

REPLACING THE THROTTLE BODIES

1. Remove the throttle bodies from the vehicle.
2. Install a new throttle bodies to the vehicle.
3. Reset:
• ISC (idle speed control) learning values
Use the diagnostic code number "67".
Refer to "SELF-DIAGNOSTIC FUNCTION
AND DIAGNOSTIC CODE TABLE" on page
9-5.
4. Adjust:
• Throttle bodies synchronizing
Refer to "SYNCHRONIZING THE THROT-
TLE BODIES" on page 3-8.
5. Place the vehicle on the centerstand so that
the rear wheel is elevated.
6. Check:
• Engine idling speed
Start the engine, warm it up, and then mea-
sure the engine idling speed.
Engine idling speed
1000–1100 r/min
EAS1MC1073

INSTALLING THE INJECTORS

ECA1MC1022
NOTICE
• Always use new O-rings and seals.
• When checking the injectors, do not allow
any foreign material to enter or adhere to
the injectors, fuel rail, O-rings, or seals.
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7-9
THROTTLE BODIES
• Be careful not to twist or pinch the O-rings
when installing the injectors.
• If an injector is subject to strong shocks or
excessive force, replace it.
• If installing the original fuel rail and screws,
remove the white paint marks using a
cleaning solvent. Otherwise, paint chips on
the screw seats could prevent the screws
from being tightened.
1. Install new O-rings and seals onto the end of
each injector.
2. Install the injectors "1" to the fuel rail "2".
Fuel rail screw
5 Nm (0.5 m·kg, 3.6 ft·lb)
3. Install the injector assemblies to the throttle
bodies.
4. Check the injector pressure after the injectors
are installed to the throttle bodies.
Refer to "CHECKING THE INJECTOR
PRESSURE" on page 7-9.
EAS1MC1074

CHECKING THE INJECTOR PRESSURE

TIP
• After installing the injectors, perform the follow-
ing steps to check the injector pressure.
• Do not allow any foreign materials to enter the
fuel lines.
1. Check:
• Injector pressure
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a. Connect the injector pressure adapter "1" to
the fuel rail "2", and then connect an air com-
pressor "3" to the adapter.
b. Connect the pressure gauge "4" to the injec-
tor pressure adapter "1".
2
New
1
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