Johnson Evinrude Outboard Motors 1956-1970 1.5-40hp repair manual., Page 251Get this manual
shut down when the throttle lever is moved back, then an adjustment must be made at the engineThis is accomplished through an adjustment knob at the engineMovement of the engine knob will actually lengthen or shorten the cable slightly for proper operation The following paragraphs provide logical sequence of tests, checks, and adjustments, designed to isolate and correct problem in the Johnson single lever shift box with the warm-up lever to the rear and the Evinrude single lever pushbutton shift box operationThe procedures and suggestions are keyed by number to matching numbered illustrations as an aid in performing the workMany times this type of problem is the result of incorrect cable installation the cable is not the proper length or there are too many bends or kinks in the routingSuch an installation will cause the inner cable to travel much further than necessary and therefore, wear on the outer cableOver period of time, inner cable wear will result is difficult shifting or throttle operationBE SURE to cycle all three shift pushbuttons to the full shift position in both directions, when making any test on the shift boxThe shift switch may have dead spot and will not indicate the switch is defective unless the three buttons are fully cycled for each test1- Amp Draw Test Turn the ignition switch to the ON position and note the ammeter readingNow, depress the shift button for the FORWARD position, and then for the REVERSE positionNote how much the ammeter reading