Fuel Tank Vent Valve - Buell 2003XB9S Service Manual

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FUEL TANK VENT VALVE

GENERAL
The vent valve opens to allow gas vapor to escape the fuel
tank and either vent to the atmosphere or to the charcoal can-
ister on California Models (EVAP-equipped) and closes to
prevent gasoline from leaking out of the fuel tank if the vehicle
is tipped at an extreme angle.
NOTE
The fuel tank must be drained to perform this service.
REMOVAL
1. Drain fuel tank. See DRAINING FUEL TANK
FUEL PUMP.
2. Remove fuel tank vent line from vent valve.
3. See Figure 4-96. Remove vent valve fasteners (5).
4. Remove bracket (4), vent valve (3) and o-ring (2) from
fuel tank/frame (1).
INSTALLATION
1. See Figure 4-96. Install new vent valve o-ring (2).
2. Install vent valve (3) into fuel tank/frame. Vent valve noz-
zle should be at approximately the 7:00 position.
3. Install bracket over vent valve. Slot in bracket should line
up with notch in valve.
4. Loosely install vent valve fasteners (5).
5. Tighten fasteners to 39-41 in-lbs (4.4-4.6 Nm).
6. Connect fuel tank vent line to vent valve.
7. Install airbox. See 4.43
8. Install intake cover assembly. See
ASSEMBLY.
9. Connect negative battery cable. Tighten battery terminal
hardware to 60-96 in-lbs (7-11 Nm).
1 1
WARNING WARNING
After installing seat, pull upward on front of seat to be
sure it is locked in position. If seat is loose, it could shift
during vehicle operation and startle the rider, causing
loss of control which could result in death or serious
injury.
10. Install seat. See 2.41 SEAT.
4-110 2003 Buell XB9S: Fuel System
under
AIRBOX.
2.35 INTAKE COVER
8774
4.38
1. Fuel pump connector [86]
2. Fuel pump drain plug
Figure 4-95. Fuel Pump Drain Screw (swingarm removed
b1000x4x
2
1
1. Fuel tank/frame
2. O-ring
3. Vent valve
4. Bracket
5. Fastener (2)
Figure 4-96. Fuel Tank Vent Valve
1
2
for illustration)
5
4
3
4.39