Hi there........
I just recently installed a new waterpump impeller on my 1976 7.5 HP Mercury Thunderbolt. The motor was running great a few years ago but then it sat for a while (A few years). I took it out of storage a few weeks back but the water pump was not pumping. So after some internet searching I fund a replacement impeller and installed it. I thought all was good till I got the boat into the water today. It starts up fine and the water pump is working beautifully but I can't seem to get any speed in first gear. When I rev it in neutral I get some high revs, same goes for the reverse. But I can't seem to get it to rev up in forward??? It just goes put put put. My daughter wants to call the boat "Put Put" now.
I think I might have installed something backwards. If thats possible.
Any leads or insights would be greatly appreciated.
Thanks
..........Stani
I just recently installed a new waterpump impeller on my 1976 7.5 HP Mercury Thunderbolt. The motor was running great a few years ago but then it sat for a while (A few years). I took it out of storage a few weeks back but the water pump was not pumping. So after some internet searching I fund a replacement impeller and installed it. I thought all was good till I got the boat into the water today. It starts up fine and the water pump is working beautifully but I can't seem to get any speed in first gear. When I rev it in neutral I get some high revs, same goes for the reverse. But I can't seem to get it to rev up in forward??? It just goes put put put. My daughter wants to call the boat "Put Put" now.
I think I might have installed something backwards. If thats possible.
Any leads or insights would be greatly appreciated.
Thanks
..........Stani