An Aussie Sailor
Join Date: Nov 2008
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Do you have a seacock to close off the intake when the engine is not running?
If not then I'd suggest your making the pump re-prime itself every time you start the motor.
Strongly recommend you fit a strainer, easier to clean gunk from that then having to disassmble the pump.
Also running the pump dry every time when you start will shorten the life of the impeller.