7-13
THROTTLE BODY
f. Start the engine.
g. Measure the fuel pressure.
Faulty Replace the fuel pump.
EAS31159
INSTALLING THE FUEL HOSE (FUEL RAIL
SIDE)
1. Connect:
• Fuel hose (fuel rail side)
ECA17500
When installing the fuel hose, make sure that
it is securely connected, and that the fuel
hose connector cover on the fuel hose is in
the correct position, otherwise the fuel hose
will not be properly installed.
• Install the fuel hose securely onto the fuel rail
joint until a distinct “click” is heard.
• To install the fuel hose onto the fuel rail joint,
slide the fuel hose connector cover “1” on the
end of the hose in the direction of the arrow
shown.
• It is prohibited to wear the cotton work gloves
or equivalent coverings.
EAS30485
ADJUSTING THE THROTTLE POSITION
SENSOR
ECA17540
• Handle the throttle position sensor with
special care.
• Never subject the throttle position sensor
to strong shocks. If the throttle position
sensor is dropped, replace it.
1. Check:
• Throttle position sensor
Refer to “CHECKING THE THROTTLE PO-
SITION SENSOR” on page 8-107.
2. Adjust:
• Throttle position sensor angle
Before adjusting the throttle position sensor, the
throttle bodies must be removed.
a. Temporary tighten the throttle position sen-
sor screws.
b. Check that the throttle valves are fully
closed.
c. Connect the throttle position sensor to the
wire harness.
d. Remove the protective cap, and then con-
nect the YDT to coupler.
Refer to “YDT” on page 9-3.
Pressure gauge
90890-03153
Pressure gauge
YU-03153
Fuel pressure adapter
90890-03186
Fuel pressure adapter
YM-03186
Fuel line pressure (at idle)
220–300 kPa (2.2–3.0 kgf/cm²,
31.9–43.5 psi)
Yamaha diagnostic tool USB
90890-03267
Yamaha diagnostic tool (A/I)
90890-03264
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