Fuel Pressure Test; Inspection - Buell XB 2010 Service Manual

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FUEL PRESSURE TEST

INSPECTION

PART NUMBER
B-45522 FUEL PRESSURE GAUGE ADAPTER
HD-41182 FUEL PRESSURE GAUGE
To prevent spray of fuel, purge system of high-pressure
fuel before supply line is disconnected. Gasoline is
extremely flammable and highly explosive, which could
result in death or serious injury. (00275a)
NOTES
Measure fuel pressure with Digital Technician II. If Digital
Technican is not available, use the following procedure.
When turning the key on or off you may observe a higher
fuel pressure reading. This is a normal condition and the
fuel pressure will return to the specified range when the
motorcycle is running. The fuel pressure reading will only
be accurate when the motorcycle is running.
1. Remove air cleaner assembly. See
ASSEMBLY.
2. Purge the fuel supply line of high pressure gasoline.
a. See Figure 4-43. Disconnect the 4-place fuel pump
connector [86]. The connector is located inside the
left rear portion of the fuel tank/frame.
b. With the motorcycle in neutral, start the engine and
allow vehicle to run.
c. When the engine stalls, press the starter button for 3
seconds to remove any remaining fuel from fuel line.
With fuel tank drained, gasoline can spill from bore when
supply valve is loosened or removed. Gasoline is extremely
flammable and highly explosive, which could result in
death or serious injury. Wipe up spilled fuel immediately
and dispose of rags in a suitable manner. (00277a)
3. See Figure 4-44. Press button (2) of fuel line connector
and disconnect the fuel line (3) from throttle body inlet (1).
4. See Figure 4-45. Attach FUEL PRESSURE GAUGE
ADAPTER (Part No. B-45522) (2) to throttle body inlet (1).
5. Connect the fuel line (3) to fuel pressure gauge adapter.
NOTE
See Figure 4-46. Verify that fuel valve (2) and air bleed petcock
(5) on the gauge are closed.
6. Attach FUEL PRESSURE GAUGE (Part No. HD-41182)
(4) to fuel pressure gauge adapter (1).
TOOL NAME
4.3 AIR CLEANER
sm00223b
1
5
4
Figure 4-43. Fuel Pump Connector [86] (Swingarm removed
for illustration)
sm06167
1
1. Throttle body inlet
2. Button
3. Fuel line
Figure 4-44. Fuel Line
7. See Figure 4-43. Attach fuel pump connector [86] to main
wiring harness.
8. See Figure 4-46. Pressurize the fuel system.
a. Start and idle engine to pressurize the fuel system.
b. Open fuel valve (2) on fuel pressure gauge to allow
fuel to flow down the gauge hose.
c. Position the air bleed tube (3) into proper container.
d. Open and close the air bleed petcock (5) to purge the
fuel pressure gauge and hose of air. Repeat this step
several times until only solid fuel (without bubbles)
flows from the air bleed tube.
e. Close the air bleed petcock.
2010 XB Service: Fuel System 4-33
4.17
2
3
5
2
3