1998 Johnson Evinrude "EC" 25, 35 HP 3-Cylinder Outboards Service Manual, Page 167Get this manual
Twist-Grip Throttle Service
Disassembly
[] 1Using OVIC Twist-Grip Throttle Remover, PIN 390767, depress the grip detentsTighten screw and remove the grip by pulling grip and turning the idle adjustment knob clockwise[] 2Remove the helix halves rollersand guides
3Pull the throttle pin out of the cable
rm 5Remove stop switch cover screws and coverstop switch assembly[jl]