THROTTLE BODIES
7-12
Pressure drops
→
Check the pressure gauge
and adapter.
Check the seals and O-rings, and then rein-
stall.
Replace the fuel injectors.
▲▲▲
▲
▲ ▲▲▲
▲
▲ ▲▲▲
▲
▲ ▲▲▲
▲
▲ ▲▲▲
▲
▲ ▲▲▲
▲
▲▲▲
EAS30482
CHECKING THE FUEL PRESSURE
1. Check:
• Fuel pressure
▼▼▼
▼
▼ ▼▼▼
▼
▼ ▼▼▼
▼
▼ ▼▼▼
▼
▼ ▼▼▼
▼
▼ ▼▼▼
▼
▼▼▼
a. Remove the fuel tank bracket bolts “1” and
holdup the fuel tank.
NOTICE
ECA20070
When lifting up the fuel tank, be careful not
to pull the fuel tank overflow hose and fuel
tank breather hose.
b. Disconnect the fuel hose “2” from the throttle
bodies.
WARNING
EWA16640
Cover fuel hose connections with a cloth
when disconnecting them. Residual pres-
sure in the fuel lines could cause fuel to
spurt out when removing the hoses.
NOTICE
ECA20010
Be sure to disconnect the fuel hose by hand.
Do not forcefully disconnect the hose with
tools.
c. Connect the pressure gauge “3” and adapter
“4” to the fuel hose “2”.
d. Start the engine.
e. Measure the fuel pressure.
Faulty
→
Replace the fuel pump.
▲▲▲
▲
▲ ▲▲▲
▲
▲ ▲▲▲
▲
▲ ▲▲▲
▲
▲ ▲▲▲
▲
▲ ▲▲▲
▲
▲▲▲
2. Install:
• Fuel tank
Refer to “FUEL TANK” on page 7-1.
EAS30937
INSTALLING THE THROTTLE BODY JOINT
1. Install:
• Throttle body joint “1”
TIP
Align the projection “a” on the throttle body joint
with the slot “b” in the throttle body joint clamp.
1
1
2
Pressure gauge
90890-03153
Pressure gauge
YU-03153
Fuel pressure adapter
90890-03176
Fuel pressure adapter
YM-03176
Fuel line pressure at idling
220–300 kPa (2.2–3.0 kgf/cm²,
31.9–43.5 psi) / Regulated pres-
sure 250 kPa (2.5 kgf/cm², 36.3
psi)
T
R
.
.
Rear fuel tank bracket bolt
(frame)
12 Nm (1.2 m·kgf, 8.7 ft·lbf)
Front fuel tank bracket bolt
(frame)
12 Nm (1.2 m·kgf, 8.7 ft·lbf)
T
R
.
.
Throttle body joint clamp screw
2.5 Nm (0.25 m·kgf, 1.8 ft·lbf)
3
2
4
Summary of Contents for YZF-R25
Page 1: ......
Page 2: ......
Page 3: ......
Page 6: ......
Page 8: ......
Page 25: ...BASIC SERVICE INFORMATION 1 16 ...
Page 32: ...SPECIAL TOOLS 1 23 ...
Page 49: ...TIGHTENING TORQUES 2 16 2 6 8 5 4 1 2 6 3 7 2 10 9 A ...
Page 66: ...COOLING SYSTEM DIAGRAMS 2 33 EAS20020 COOLING SYSTEM DIAGRAMS 1 2 3 1 5 4 4 ...
Page 99: ......
Page 128: ...PERIODIC MAINTENANCE 3 29 ...
Page 146: ...GENERAL CHASSIS 5 4 15 1 b b a a 2 ...
Page 200: ...FRONT FORK 4 69 2 b a 1 ...
Page 209: ...SWINGARM AND REAR SHOCK ABSORBER ASSEMBLY 4 78 2 1 1 1 a A B ...
Page 214: ...CHAIN DRIVE 4 83 ...
Page 256: ...CYLINDER AND PISTONS 5 39 1 ...
Page 310: ...TRANSMISSION 5 93 ...
Page 322: ...WATER PUMP 6 11 ...
Page 336: ...THROTTLE BODIES 7 13 c 1 cylinder d 2 cylinder A Left B Right b a d c A B b 1 ...
Page 337: ...THROTTLE BODIES 7 14 ...
Page 338: ...AIR INDUCTION SYSTEM 7 15 EAS20071 AIR INDUCTION SYSTEM 1 2 3 4 5 1 2 ...
Page 342: ...AIR INDUCTION SYSTEM 7 19 ...
Page 345: ......
Page 355: ...ELECTRIC STARTING SYSTEM 8 10 ...
Page 359: ...CHARGING SYSTEM 8 14 ...
Page 371: ...SIGNALING SYSTEM 8 26 ...
Page 417: ...FUEL PUMP SYSTEM 8 72 ...
Page 420: ...ELECTRICAL COMPONENTS 8 75 2 3 4 5 12 11 10 9 8 7 1 6 ...
Page 440: ...ELECTRICAL COMPONENTS 8 95 ...
Page 451: ...SELF DIAGNOSTIC FUNCTION AND DIAGNOSTIC CODE TABLE 9 10 ...
Page 453: ......
Page 454: ......