On Jun 5, 2021, at 12:50 PM, Daryl Clark <dlclark@...> wrote:

?Most of our Pacific Seacraft Sailing Vessels have the ubiquitous GROCO HF head/toilet! I have often found that the head will flush when water is dispensed into the bowl, but will not draw water from the thru-hull! Dock mates of mine, the founders of Good Old Boat Magazine (Karen Larsen and Jerry Powlas), offered their solution to the problem. They wash their dishes in a tub and use the gray water to flush their heads with.

So, during my commissioning this spring, I thought I would try something similar. I also immediately had problems drawing water with the hand pump from the thru-hull: so I took some dish washing had soap and drizzled some down the pump handle shaft into the pump body! Voila - Merci the pump miraculously started working again.

Daryl
s/y Intuition - PSC Crealock 31 # 54 (1990 Vintage)

On Jun 6, 2021, at 11:54 AM, Daryl Clark <dlclark@...> wrote:

?I sail Lake Superior water quality is not an issue! It is keeping the diaphragm in the GROCO hand pump working properly. The liquid hand soap does the trick...

Daryl