Buell 2009 XB Series Service Manual page 387

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9. Open throttle and increase engine speed to 2500-3000
RPM. Note the reading on the pressure gauge.
a. If pressure is 49-51 PSI (338-352 kPa) then system
is operating within limits.
b. If pressure is not within limits, see Electrical Dia-
gnostic Manual.
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)
10. See Figure 4-48. Turn engine off. Detach pressure gauge
(4) from adapter (1).
a. Open the air bleed petcock (5) to relieve fuel system
pressure and purge the pressure gauge of gasoline.
b. Remove pressure gauge from adapter.
11. Detach adapter from vehicle.
12. Connect fuel line to throttle body inlet.
sm06168
1. Throttle body inlet
2. Fuel pressure gauge adapter
3. Fuel line
Figure 4-47. Fuel Pressure Gauge Adapter
3
2
1
sm06169
4
2
1
1. Fuel pressure gauge adapter
2. Fuel valve (closed position)
3. Air bleed tube
4. Fuel pressure gauge
5. Air bleed petcock
Figure 4-48. Fuel Pressure Gauge
2009 XB Service: Fuel System 4-35
400
60 70
5
50
40 80
30 90
100
20
250
10
3