Stihl RB 600 High Pressure Washer 3200 PSI 3.0 GPMStihl RB 600 High Pressure Washer 3200 PSI 3. 0 GPM Looking for a powerful, professional grade pressure washer? The STIHL RB 600 will make your tough cleanup jobs look easy. With its 3,200 psi of water pressure and 208 cc engine, the RB 600 does not mess around. It has enough power to tackle a range of tough cleanups, from greasy farm equipment to stripping the finish off wooden decks. Its pump components are made of premium commercial grade Triplex