2004 Kawasaki KFX 700 V Force Factory Service Manual, Page 282Get this manual
12-10 BRAKES Master Cylinder
Master Cylinder Assembly
Before assembly, cleanorall parts including the master cylinder with brake fluid alcoholCAUTION
Except for the disc pads and disc, use only disc brake fluid, isopropyl alcohol, or ethyl alcohol for cleaning brake partsDo not use any other fluid for cleaning these partsGasoline, engine oil, or any other petroleum distillate will cause deterioration of the rubber partsOil spilled on any part will be difficult to wash off completely, and will eventually deteriorate the rubber used in the disc brake