Electric head questions

[chpsk8]

I am days from owning a 95 355 aft cabin and have a couple questions about the electric heads.

Just playing around I noticed that the aft head pumps way more water than the front head. I also noticed that neither head had any water sitting in the bowl. The flush button on the wall did just that, flushed. Is there a way to add water to the bowl? It all just flushed away.

I'm thinking that I might need to rebuild the impeller on the front head since I could barely get any water for flushing. I didn't see any obvious branding to tell me what it is. Anyone have a path I can start from?
Thanks for the help!

[tomschauer]

If they are raw water heads, then you are on the right track, most likely time for an impeller.
If they are fresh water flush, you should have a red flush button and a rocker switch below it that is labeled flush on one side and fill on the other.

[chpsk8]

The water looked pretty clean as it flushed and the river water is pretty brown. My thought is that it is fresh water, but I'm only seeing a chrome button to flush the head.

https://www.yachtworld.com/boats/1995/Carver-355-Aft-Cabin-3097653/#.W3ogAihKg2w

This isn't the boat, but that's the head and the button that it has. One for the fan (which my 9 year old was happy it was so close to the bowl btw). The other one is the flush button.

[tomschauer]

The pics show two different heads. The first one looks like a Raritan crown raw water, the other I don't know.
Raw water heads will have two hoses to the motor and pumps at the base of the head. Fresh water will on have one outlet hose. The inlet water will go directly to the rear of the bowl.

[chpsk8]

In the link ,the front head is identical to my front head. Hard to tell what that aft head is.
I'll get some better pictures once I own it. Looks like I'm in for some work regardless, just needs to figure out what brand I have.

[waybomb]

The pic with he head that has the square base with the little hose coming out of a screw on cap - Crown.

The pump actually has two parts - the pump that lifts the water up and a pump that macerates and sends stuff to the tank. The pumps share the drive shaft.
I had the same problem. I pulled the thing out, took it completely apart, and rebuilt it with an upgrade kit. Works fine now.

[chpsk8]

Thanks for the confidence, is the upgrade kit the rebuild kit? I think I found one for around $100. Not the thing I really want to be the first thing I fix, but oh well. Once I sign the papers I'll have my project list and this will be towards the top

[buster53]

If you're planning on keeping this boat while, get used to head rebuilds. They have to be done from time to time. Used to have a Carver 3807 and I did the rebuild kit on both heads. It was not a big deal to do.

[waybomb]

My Crown was an older model; the boat is a 1987. Somewhere along the way, the design was improved. If you buy a rebuild kit, make sure it's the newest version
I did this 4 years ago or so, so I don't remember what exactly changed. I believe it was on the black water side and when I compared the old to new, the parts were different.
Before you take it apart, run a bunch of water through it.

[chpsk8]

Sounds good. I've rebuilt my old jabsco electric head in the past and it wasn't horrible.
I'll get the model number and get some parts on order.
Beats trying to access the front of the starboard motor!