1990 Johnson Evinrude 120 thru 140, 185 thru 225, 300 HP, P/N 507875, Page 354Get this manual
10Lift shift and throttle plate from housingUse caution when removing mounting plate, shift and throttle plate as detent spring is highly compressed and may fly out, causing personal injuryWear safety glasses I13l '"
113l 11 Remove detent roller
detent shoeand detent
] 12Lift shift lever assembly from controlf14l 13To remove throttle lever assemblyremove flat head screw and countersunk washer from controlDiscard the patch screwLift throttle lever assembly and throttle lever spacer from controlRemove screw and locknut retaining the shift lockout cam to fast idle leverDiscard the locknutRemove keeper plate screw Lift shift lockout cam and shift lockout lever CD from housingRemove spring washer and fast idle lever from housing15The key switch, warning horn, neutral start switch, and emergency ignition cutoff switch are serviceable, if necessaryReplace, if damagedf17l 16To disassemble control handle, remove two screws securing the plate to the control handle Lift neutral lock slideand slide return spring from control handleRemove screw retaining control handle knob and four screws retaining control handle cover Remove control handle knob and control handle cover from control handleTo remove trimtilt switch assembly, remove screw retaining switch to coverCleaning and Inspection is any sign of rounding of the edges, replace the shift lockout cam