Bilge pump runs, but not moving water

[tkaustin]

2011, RT 25 SC.
We have a couple inches of water in the bilge, enough to cover the bilge pump. I can switch it on and hear it running but it does not move any water. Maybe a clogged intake filter?
I don't know the form factor of this pump. Is there a way to check an intake screen? I can't lift it up, it's securely in place for reason I can't see.

 

[4umfreak]

The pump is likely the 750 gph version of this pump.
Theory is you can remove it by twisting the top and lifting it straight out - if you have that much clearance down there!

 

[Newf]

That’s a Johnson pump and if you haven’t already done so you can start troubleshooting by removing the cartridge from the housing to see if the impeller is ok or if it’s plugged around the bottom of the housing with crap. You could also disconnect the discharge hose from the pump to check for anything plugging it. Not sure if you are aware but that little black box floating in the water is the auto sensor and attaches to a clip near the bottom of the housing of the pump. When water reaches a certain level on the sensor it kicks on automatically. Maybe you have it off for a reason.

 

[Newf]

Forgot to mention that to remove the pump cartridge you need to pry the little black horizontal tab, shown in the photo, out a bit in order to turn the cartridge and then lift it out. Tight area there but should be doable. Good luck.