PTI or Shaft Brake (Integrated) PTI. Engine Output: (Required fields) kW at. rpm. ZF 286 A TECHNICAL DATA SHEET ZF 286 SERIES PRODUCT DETAILS Description Reverse reduction marine transmission with hydraulically actuated multi-disc clutches Suitable for high performance applications in luxury motoryachts, sport fishers, express cruisers etc Robust design also withstands continuous duty in workboat applications fileslib. All ZF control systems use either 12 or 24 VDC supplied power. For applications using electronic shift, the input voltage to the processor must be equivalent to the voltage required by the shift solenoid. The maximum power requirement while driving a servo for mechanical actuation is 160 Watts. I have an older Mathers system on my twin screw boat. Marine Propulsion Systems ZF 286 Vertical offset, direct mount marine transmission. Maximum Input** Duty kW hp RPM Pleasure 566 758 3300 Light 509 682 3300 Medium 380 509 3300 Continuous 345 463 3300 ** Must not be exceeded Description Reverse reduction marine transmission with hydraulically actuated multi-disc clutches .