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Question:

Marine cabin water pump?

I have a cabin cruiser and I recently took it out of storage and had it de winterized. Now everything seems to work except for the fresh water pump for the sink, shower and toilet. Does this type of pump need to be primed? If so how do you prime it? Thank you for the help.

Answer:

most likely the pressure switch is stuck/corroded. this is a common problem with on demand type pumps.try tapping on the pressure switch to see if it will work.if the pump is installed properly,the motor should be at the top and the pump and switch will be at the bottom.i consider these pumps disposable. expect to replace it every couple of years.
Those pumps are usually self priming.. either you have a PLUGGED LINE or the water pump froze in the cold and it needs to be replaced... but they are cheap.
Try hooking a solid 12 volts directly to the pump to 'jump start' the pump.. That got mine started... As mentioned in another post, these pumps are disposable items.. Good luck...

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