1995 Johnson/Evinrude Outboards 25, 35 3-Cylinder Service Manual, Page 153Get this manual
OQ;CD 9 Thermostat Servicing
Disassembly
1Remove the thermostat assembly from the cylinder head
Unscrew the thermostat cover from the thermostat housing Remove the relief springdiaphragm and cupwashervernathermand spring Remove the thermostat housing O-ring and thermostat cover O-ring CD