I can send you a Hamilton 770 series manual if you need it?
Have you sent the photo's yet?
I attach the power/rpm curves for your jet. From how I see it you must be using a Multiplying transmission and not a reduction gearbox. It would...
You will find that you will be getting different max rpm of the engine if you put fins or anything in front of the engine, than if you do not have...
May I ask why have you mounted a gearbox. What make is it and what reduction ratio does it have in reverse gear? Normaly jets connected to...
Have checked your universal driveline, Thrust bearing, Wear Ring and impeller tolerance.
I have been on hundreds of boats with twin, triple and cuadruple jets mounted over the last 25 years. If the vessel is designed and built...
Hamilton are correct that the shaft does not need to be isolated from the jet. Even on there new models of jets the shaft have brushes conecting...
Check to see whether your exhaust is located above waterline? Is your mainshaft of the jet under the waterline? It would be good to know the rpm...
Is the jet Cavitating? Does it rattle a lot while trying to prime?
