Easy Jabsco Head Replacement - SailNet Community
LinkBack Thread Tools
post #1 of 5 Old 06-26-2011 Thread Starter
Senior Member
SVlagniappe's Avatar
Join Date: Jun 2008
Posts: 111
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 9
Easy Jabsco Head Replacement

I have 2 jabso heads that I want to replace. I'm looking for any experiences from someone who has done this. I don't mind spending the bucks for a good head, but I want it to be a simple unbolt/bolt replacement. Floor bolts need to be in the same place and inlet, output hoses compatible.

SV lagniappe
Beneteau 423 #310
SVlagniappe is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
post #2 of 5 Old 06-26-2011
Senior Member
Stu Jackson's Avatar
Join Date: Jul 2001
Posts: 1,163
Thanks: 0
Thanked 30 Times in 29 Posts
Rep Power: 16
The floor bolts are lag bolts, so there is no "nut" underneath.

Unless you buy exactly the same head, you won't get the lag bolt locations to line up, but it's not an issue. Just fill the old ones and drill new ones.

The "best" head is a Raritan, either the PHII or PHC. The challenge is to get the head out hose to line up. A wee bit of measuring will tell you if they'll work for you.

The Raraitans have the head pump inlet on the front, so you'll need a longer inlet hose usually with a 90 degree elbow.

If what you want is your ONLY criteria, your only choice is to buy another Jabsco.

Stu Jackson, Catalina 34, 1986, M25 engine, Rocna 10 (22#), Maple Bay, BC, Canada
Stu Jackson is offline  
Quote Quick Reply Share with Facebook
post #3 of 5 Old 06-27-2011
Crotchety Old Member
tomperanteau's Avatar
Join Date: Jun 2009
Location: San Pedro Harbor, California
Posts: 908
Thanks: 2
Thanked 4 Times in 4 Posts
Rep Power: 8
I second what Stew said. I recently replaced my old head (and everything else connected) with all new. I went with the Jabsco because it is a tried and true name. Filled in the old holes, sanded, painted, and was done. A complete new system from the toilet to the macerator. Well worth it and absolutely no smells.

Capt'n Tom Living Aboard 50/50

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

S/V Footprints

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

1976 41' Morgan Out Island Sloop. Refitting and redoing her interior for an extended voyage.

Last edited by tomperanteau; 06-27-2011 at 08:54 PM. Reason: spelling...
tomperanteau is offline  
Quote Quick Reply Share with Facebook
post #4 of 5 Old 06-27-2011
Senior Member
mitiempo's Avatar
Join Date: Sep 2008
Location: Victoria B.C. Canada
Posts: 7,798
Thanks: 0
Thanked 111 Times in 102 Posts
Rep Power: 10
Or a Lavac - the most trouble free head. Lavac Marine Toilets - Popular

I replaced my Jabsco almost 2 years ago and have no regrets. I have never used a more reliable head. A bit more complicated to install but well worth it. Never plugs either.

Living aboard in Victoria Harbour
mitiempo is offline  
Quote Quick Reply Share with Facebook
post #5 of 5 Old 06-27-2011
Old as Dirt!
svHyLyte's Avatar
Join Date: Nov 2008
Location: Tampa Bay Area
Posts: 3,193
Thanks: 20
Thanked 154 Times in 146 Posts
Rep Power: 9
When I replaced the old head on our former boat, I used a 3/4" thick piece of Starboard as a spacer. I used the old head to duplicate the bolt pattern for attaching the Starboard to the base, hence the old stainless lag bolts could be used. I used the new head to duplicate the new head's bolt pattern and, using that, set the appropriate sized bolts, counter sinking the heads on the bottom face of the Starboard and locking nuts on the top face. The new head was set down on these "studs" and locked in place with cut washers, lock washers and finish nuts. The thickness of the spacer made no difference to use of convenience.


"It is not so much for its beauty that the sea makes a claim upon men's hearts, as for that subtle something, that quality of air, that emanation from the waves, that so wonderfully renews a weary spirit."
svHyLyte is offline  
Quote Quick Reply Share with Facebook

Quick Reply

By choosing to post the reply above you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Register Now

In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Similar Threads
Thread Thread Starter Forum Replies Last Post
waterpump replacement (jabsco) arne1981 Gear & Maintenance 2 04-26-2011 04:28 PM
Jabsco Marine Head Installation Tips sailjunkie Gear & Maintenance 13 03-22-2011 11:29 PM
Need manual for Jabsco/PAR 59128 head dman535 Gear & Maintenance 0 05-05-2009 04:34 PM
review of jabsco head saurav16 Gear & Maintenance 20 12-17-2008 08:30 AM
Head Service Kit (Jabsco) offline2004 Gear & Maintenance 6 04-16-2007 11:39 AM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome