2003 Kawasaki 1100 STX D.I. Jet Ski Factory Service Manual, Page 38Get this manual

2003 Kawasaki 1100 STX D.I. Jet Ski Factory Service Manual, Page 38

PERIODIC MAINTENANCE 2-9 Maintenance Procedure
If necessary, adjust the oil pump cable [A]Hold the throttle lever fully applied (pulled)Turn the oil pump pulley till the stop on the pulley contacts to the stopper pin on the oil pump bodyAt this time, the oil pump pulley is fully openAnd then give the oil pump cable tension by turning the upper adjusting nut clockwiseLoosen the upper adjusting nut [B] by turning counterclockwise 12 turn and then fix the oil pump cable by tightening the lower adjusting nut [C] securely
Fuel Vent Check Valve Mounting
The fuel vent check valve is mounted in the fuel tank vent hose to prevent fuel from spilling during ridingAir can flow into the tank to allow fuel to be drawn out by the fuel pump, but fuel cannot flow out the check valveThe fuel vent check valve [A] must be mounted so that the arrow [B] on its case is pointing toward the fuel tank
Fuel Vent Check Valve Inspection

check valve and through it from Remove the valve will allow airblowflow as shown, iteach endIf the check to is OKIf air will flow through the check valve in both direction or in neither direction, the check valve must be replaced