Reply To: 1948 Gale Hiawatha 5HP

[NBD925]

I tested the old pump two ways. I fully assembled the motor with the cleaned out passages and new upper gaskets. Started the engine and there was no water circulation and the head got hot.

I then dropped the lower unit section and put a hose to the lower water passage tube. Water flowed through the head and out the exhaust. I then Started the engine with the water flowing And the engine ran cool to the touch. So the water passages are flowing, I’m just not getting enough pressure to get the water up there.

I then attached a drill to the lower drive shaft and spun the lower section with prop in the correct direction to check flow from the pump. It was barely moving any water up the water tube to the 90 degree bend.

All prop holes and passages are clear. It must be the rubber pump. It looks ok but seems to be very weak.

So the pump Brian Wilcox sent is from a 3hp model? Hopefully he gets back with me later today.