How do I remove stuck thermostat cover Evinrude? - The Hull Truth

terpsalot · 09-16-2008, 06:34 PM

2001 Evinrude Ficht 250. Was trying to replace the thermostats. One nylon thermostat cover came off easy, the other one was so stuck that I snapped off the top hex part where the socket goes. Any suggestions on how to get it off now?

Thanks!

A1 Outboard · 09-16-2008, 08:59 PM

There are 2 hexes on the t'stat caps if I remember. The larger one is 1- 1/2" and you can use a large socket and a breaker bar or an impact gun. If it has been really neglected, the shank may shear off and the threads remain in the cylinder head. If so, you will have to chisel out the pieces bit by bit until you can remove everything. Clean out any debris using a vacuum with a small hose to get the last of the plastic pieces out. Use a small wire brush to clean the salt out of the threads in the head.

Use plenty of Triple Guard grease to coat the threads when you install the new caps and inspect those thermostats at the required 100hr or annual servicing.

terpsalot · 09-17-2008, 03:37 PM

Thank you. Ended up having to chisel it out. It was basically cemented in there...