2007-2010 Kawasaki Ultra 250X/260X/260LX PWC Factory Service Manual, Page 38Get this manual
2-16 PERIODIC MAINTENANCE Periodic Maintenance Procedures
Fuel Vent Check Valve Inspection
The fuel vent check valve is mounted in the fuel tank vent hose to prevent fuel from spilling during riding Air can flow into the tank to allow fuel to be drawn out by the fuel pumpbut fuel cannot flow out the check valve Remove the seats (see Seat Removal in the HullEngine Hood chapter) Cut off the bands [A] Pull out each end of the fuel vent check valve [B] from the vent hoses [C]
Blow through the fuel vent check valve from each end If the check valve will allow air to flow as shownit is OKIf air will flow through the check valve in both direction or in neither directionthe check valve must be replacedThe fuel vent check valve [C] must be mounted so that the arrow [0] on its case is pointing toward the fuel tank