2007-2009 Kawasaki KFX50 service manual, Page 64Get this manual
3INSPECTIONADJUSTMENT ENGINE OIL REPLACEMENT Place the machine on level placeWarm up the engine for several minutes and stop itPlace container under the engineRemove the oil filler cap and drain plug to drain the oilReinstall the drain plug and tighten the drain plug to specificationTorque: 25 Nm (2.5 kgfm, 18 lbfft) Fill the engine with oil and install the oil filler capWarm up the engine for several minutes at idle speedCheck for oil leakage while warming upBe sure no foreign material enters the crankcase