2000-2001 Kawasaki 1100 STX D.I. Jet Ski Factory Service Manual., Page 81Get this manual
FUEL SYSTEM (DFI) 2-41 Diagnostic
6Low Maximum RPM CAUSES
Fuel System
Restricted or Broken Lines, Fittings, Filtelr, or Pressure Regulator Poor QualitySpoil Fuel Faulty Injector or Ilnjector Signal Possible Lean or Rich Cylinder Faulty Fuel Pump Low Fuel Pressure Stuck Open or Pressure Regulator MissingLow PressurePossible Lean Top Cylinders
Check fuel lines components Repair or replace as necessary Substisute known aood he4 Isolate using cylinder drop test in KADIAG Software Monitor fuel system pressure See Fuel LineFuel Pump section Monitor fuel system pressure See Fuel Line section
Ignition System