JBS steering cable for the Teleflex jet boat steering helms: SH5087P, SH5088P, SH91691P, SH91692P** Note: The following helms are obsolete: SH91678P, SH91679PHow to Measure - How to Measure Steering Cables "Measure Twice. Order Once." Replacement of Existing Cable: If possible, find the part number stamped on the plastic jacket of the old cable. If you removed the old cable, measure for the replacement cable as follows:For JBS Jet Boat Cable Replacement, Measure Existing Cable as follows: Measure cable from tip to tip. (Round up to next foot if needed for whole foot.) Order that length cable. - JBS helms are ONLY for smaller jets such as Mercury Sport Jet, OMC Turbo Jet, etc. and look like the helm depicted at right. If your jet steering is different, contact Teleflex. New Installation: Measure cable routing path from wheel center line to engine connection, as follows: A = Center line of wheel to gunwale (or deck, if routed downward), B = Dash to transom, C = Gunwale to centerline of cable connection at centered tiller. - For Cable Installations through the Engine Tilt Tube: Add A, B & C + 6′′, then round up to the next foot. Order that length cable. - For Cables Mounted to Transom, Splashwell or Stringer: Add A, B & C, then subtract 6′′ and round up to the next foot. Order that length cable. - TYPICAL SINGLE STATION ROUTING A single-cable, starboard drive push-pull mechanical cable system is shown in this diagram. - Cable routings (such as those found on pontoon boats) may vary from this drawing. Confirm length by laying a garden hose or similar object) along cable path and measure run from wheel to engine connection point.