Specifications   Model:   270SS 18HP Briggs & Stratton Gasoline Engine:     3000RPM      CAT 3CP Pump:   4.3 GPM      Waste Tank:   65 gallon   Specifications   Models:   370SS 20HP Kohler Command Gasoline Engine   2800RPM     CAT 3CP Pump:  4.3GPM     Waste Tank:   65 galloin