Jabsco toilet

toolmaker312

Last year we seem to be getting unwanted smells. Does anyone know what keeps the fumes from coming up through the toilet? Is there supposed to be a flap on our 2003 312 or is their a water trap. 
Thanks

Liberty44140

There is a joker valve. Silicone/Rubber piece that is something that should be changed every other season. It opens like a mouth to let your stuff out and then closes to not let anything back up. Should be pretty easy to replace, a few screws on the side of the toilet.

Aqua_Aura

We had the smells last season and we replaced the joker valve which was in very bad shape. Now the boat smells fresh and clean everytime we get on board ☺️

davidbrooks

If the smell is primarily when you flush then you need to research putting in a charcoal filter on the septic vent line.  Tons of stories on it here.  Everything from home made ones to the favored Big O.

toolmaker312

Thanks, Is the Joker valve visible?  I do need to install a filter too.

Liberty44140

https://www.xylem.com/en-us/support/video-library/replace-a-jabsco-joker-valve/

There is the link on how to replace the joker 

toolmaker312

Thank you for that video. I was expecting a gate in the toilet like the camper we have . I thought I was missing a part. Just ordered from Amazon 10.95 thanks again.