1998 Johnson Evinrude "EC" 25, 35 HP 3-Cylinder Outboards Service Manual, Page 151Get this manual
[}] 3Tighten the thermostat housing and cover securely rn 4.Install new thermostat housing O-ring and cover onto the thermostat assemblyO-ring
[}] 3Tighten the thermostat housing and cover securely rn 4.Install new thermostat housing O-ring and cover onto the thermostat assemblyO-ring