The above water exhaust port is to relieve the exhaust pressure when
ideling.

--
Tony
my boats and cars at http://t.thomas.home.mchsi.com
"Richard J Kinch" wrote in message
. ..
I just acquired a new 25 HP Tohatsu outboard for my inflatable boat. There
is a port above water on the stem that spits out water and exhaust. Do I
surmise correctly that "through the hub exhaust" doesn't mean that *all*
the exhaust goes through the hub? What is the purpose of the above-water
exhaust port?