I have an old 25 hp evinrude outboard. I want to remove the 5 inch
extension to shorten the shaft. To use my current lower unit, I need
a drive shaft and I have to install the drive shaft. I don't know how
to seal the lower unit and put every thing back together. I was
wondering what lower units will swap out. I also want a lower unit
with through prop exhaust.
My other question is about how to measure operating temperture.
I know its around 170, but there is no overheat warning horn. What is
an easy way to measure the temperture. They have plastic sticks that
melt but I cant find them easily. What can I use to check the
temperture easily to get an idea if I need to change the water pump
and thermostat.