Marine Head Manual Pump - no water flow

bbtopcat1

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No water flows when operating the pump handle on '02 248 Voyager equipped with Marine Head /Manual Pump out . Approx 3/4" of residual water in bottom of bowl. When pumping handle, looks/sounds like just air is being pumped into bowl. Have confirmed marine head inlet seacock is open(handle in vertical position) Also, the wet/dry bowl selector decal is unreadable. Which position is "wet" versus "dry" for the selector switch,e.g. selector in vertical position - wet OR dry?
 
Jabsco has a rebuilt kit that is about $40 that you can install in about 20 minutes and it's good as new again
 
Many thanks for the timely and sage reply/advice - Happy New Year from sunny but a little chilly Fleming Isle, FL!
 
Concur that the Jabsco rebuild kit is an easy way to go. Just need fresh internals in the pump.

Had the same problem a few years ago. Replaced the manual pump with the Jabsco electric conversion kit. Cost a bit more, but have never regreted that decision.

Brian