1996 Johnson Evinrude "ED" 90 LV 125C, 130, 200, 225, 250 Service Manual, P/N 507128, Page 225Get this manual
Thermostat Servicing Disassembly
1Remove four screws retaining thermostat coverRemove cover and gasket2Remove thermostat assembly and inspect for heat damage or corrosion
Assembly
1Insert the pin into the vernatherm with the convex end of the pin facing out2Position vernatherm in sealPosition retainer and spring in thermostat housingAssemble halves