Installation; Removal; Fuel Tank Vent Valve; General - Buell XB 2008 Series Service Manual

FUEL TANK VENT VALVE

GENERAL

The fuel tank vent valve opens to allow gas vapor to escape
the fuel tank and either vent to the atmosphere or to the char-
coal canister 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.
The fuel tank must be drained to perform this service.

REMOVAL

1. Remove seat.
To prevent accidental vehicle start-up, which could cause
death or serious injury, disconnect negative (-) battery
cable before proceeding. (00048a)
2. Disconnect negative battery cable.
3. Remove intake cover assembly. See
COVER.
4. Remove air cleaner cover. See
ASSEMBLY.
5. Drain fuel tank. See 4.13 FUEL PUMP, Draining Fuel
Tank.
6. Remove fuel tank vent line from vent valve.
7. See Figure 4-28. Remove fasteners (5).
8. Remove bracket (4), fuel tank vent valve (3) and o-ring
(2) from fuel tank/frame (1).

INSTALLATION

1. See Figure 4-28. Install new o-ring (2).
2. Install fuel tank vent valve (3) into fuel tank/frame. Vent
valve nozzle should be at approximately the 7 o'clock
position.
3. Install bracket over vent valve. Slot in bracket should line
up with notch in valve.
4. Loosely install fasteners (5).
5. Tighten fasteners to 39-41 in-lbs (4.4-4.6 Nm).
4-18 2008 XB Service: Fuel System
NOTE
2.40 INTAKE
4.2 AIR CLEANER
6. Connect fuel tank vent line to vent valve.
7. Install air cleaner cover. See
ASSEMBLY.
8. Install intake cover assembly. See
9. Connect negative battery cable. Tighten battery terminal
hardware to 72-96 in-lbs (8-11 Nm).
After installing seat, pull upward on seat to be sure it is
locked in position. While riding, a loose seat can shift
causing loss of control, which could result in death or
serious injury. (00070b)
10. Install seat.
sm00876
2
1
1. Fuel tank/frame
2. O-ring
3. Fuel tank vent valve
4. Bracket
5. Fastener (2)
Figure 4-28. Fuel Tank Vent Valve
4.11
4.2 AIR CLEANER
2.40 INTAKE COVER.
5
4
3