Introduction. The workshop manual contains technical data, de- Please check the wiring diagram! . gear, all versions, and sail boat drive 120S, all ver- sions. HBW Boat Reversing Gearbox Units. :* . : . 0. - . Manual. Spare Parts List for. HBW 50 · HBW 100 . The HBW manual is intended as an aid for handling HBW transmissions and will answer all questions that Power diagram. 1.2 Technical . Members of this form have recently give me some good advice re problems with my Hurth gearbox and I now want to remove it for sending off . 2) – Engine coupled to the tranny towards rear of boat (Closed Coupled V- . Remember that in all cases regardless of which drive-line layout one uses, the . TWIN DISC. INCORPORATED. Owner's. Manual. Marine. Transmission. Document Grease Intervals: 100 hours or when the boat is docked to prevent bilge . Example of a transmission steering system in a centre cockpit boat: This layout shows the typical routing of the transmission steering in a centre cockpit boat. . The diagram below shows the mechanical advantage (lever reduction) in relation . The following international symbols are used in this service manual. DL. LA . 10.3 Removing transmission from boat . Wiring diagram for neutral safety switch. 10.3 Removing transmission from boat. 10.4 Removing input . 5 Wiring diagram for neutral safety switch. Fig. . 21 Trolling Valve schematic layout content a co.