I have two of these heads on my boat (the fresh water versions 37045) and they are good reliable heads.
One thing you need to watch for though:
If you look at the manual Peggy has conveniently attached Item 22 “Seal Housing”
Many people service
and repair or replace seals
etc. When you put it back together make absolutely sure the little square cutout in the circular part goes to the bottom. This is a drain hole for when the seal item 19 starts leaking (and it will). If it is not down, the housing will hold water and the 4 dollar bearing will quickly rust and you will have to replace the $200 dollar motor
. You will know the bearing is bad because the head will make a terrible noise
when flushed, and eventually freeze up.
It would be a good idea to look at your head now to make sure it is assemble correctly as this will save you a LOT of money
. When you start seeing liquid around the bottom of the bowl it is most likely the seal has started leaking and should be replaced ASAP.
Just a note, the fresh water version has a two way switch that allows water in without pumping, it uses very little water to flush and solves two problems associated with sea water heads. 1, no sulfur smell from dead sea water creatures when you have not used the heads for a week, and 2, no salt
build up inside the discharge hoses. A true blessing.