Unscrew the bolts holding the water pump housing and remove the cover
Tilt your outboard motor to the highest position
Inspect the area around the fitting on the transom for any signs of gear lube oil
which typically use a different plug design
Replace the housing cover and fasten it securely
Thermostat – Fits Johnson/Evinrude 185-225HP (Replaces 0437090, 437090, 0436174) 29HP Unscrew the bolts holding theProduct Details This aftermarket Thermostat Fits Johnson Evinrude 185HP, 200HP, 225HP is a high quality replacement designed for Johnson Evinrude 185225 HP V6 outboard engines from 19931994. It ensures your engine maintains the correct operating temperature for optimal performance and fuel efficiency. It serves as a direct interchange for Johnson Evinrude part numbers 0437090, 437090, 0765585, 0436174, and 0435100, and also cross references with