1990 Johnson Evinrude "ES" Electric Trollers Service Manual, P/N 507869, Page 83Get this manual
Motor Tube ShorteningFoot Control Models 1Remove steering housing from motor tube as described in Section 3
Using pipe cutter with sharp cutting wheel, cut off tube at point shown in figureBe careful not to damage leads
3Remove burrs, raised surfaces, and sharp edges from tube being careful not to cut insulation on leads in tubeDo not redrill roll pin hole in tube as this is press fit