General; Throttle Body - Buell 2009 XB Series Service Manual

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THROTTLE BODY

GENERAL

The throttle body consists of the following components:
Fuel supply fitting
IAC sensor
Fuel injectors
Cable bracket
Throttle position sensor
Throttle lever
REMOVAL
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)
1. Purge the fuel supply line of high pressure gasoline.
a. See Figure 4-38. Disconnect the 4-place fuel pump
connector [86]. Connector is located on the left side,
above the fuel pump.
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.
d. Reconnect fuel pump connector.
2. Remove air cleaner assembly. See
ASSEMBLY.
3. Label and detach throttle cables. See
CONTROL.
4. Remove coil wire retaining clip attached to throttle cable
bracket.
5. See Figure 4-39. On California models, pull EVAP hose
from fitting (1).
6. Remove left and right air scoops. See
7. Remove ignition coil. See
8. See Figure 4-41. Remove fuel line from fuel rail (14).
9. Disconnect:
a. TPS connector [88] (21).
b. Fuel injector connectors [84] [85] (12).
c. IAC connector [87] (18).
4.3 AIR CLEANER
2.24 THROTTLE
2.49 AIR SCOOPS.
4.6 IGNITION COIL.
10. Remove assembly from motorcycle.
a. See Figure 4-40. On primary side, loosen but do not
remove the two front and rear intake flange fasteners
(2).
b. Remove fastener (1) holding manifold to cylinder
brace.
c. See Figure 4-41. On gearcase cover side, remove
both intake flange fasteners (3) from cylinder heads.
d. Slide the throttle body assembly through top of
motorcycle frame.
11. See Figure 4-40. Remove intake flanges (2) from manifold.
Remove and discard seals (1).
sm00888
1
2
3
1. EVAP hose fitting
2. Throttle control cable attachment
3. Idle control cable attachment
4. Throttle control cable slot
5. Idle control cable slot
Figure 4-39. Throttle Cable Bracket
2009 XB Service: Fuel System 4-29
4.15
4
5