04 240 Sundeck SeaRay Head Operation

by Tim McCoy
(Winter Springs, FL)

Purchased boat, have not found anyone to 100% tell me how my head works, I turn on water, lift lever to put some water in bowl, the part I don't know is should I have the key on to create a vacuum? I do not have an overboard discharge, there is a pump on top of the holding tank in the forward storage, when I have tested leaving the key on for a couple of minutes it seems like there is an enormous amount of vacuum that builds up underneath the ball in the toilet, have been afraid to leave it on very long, the 12 year old owners manual says it will shut off by itself (???) Any direction would be appreciated, thank you

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