SD 20 Saildrive

[Jacana]

Whats the best way of cleaning the sea water piping inside the sd 20 saildrive leg?One of mine seems to be restricting the flow causing engine to overheat.
Thanks Geoff.

[Talbot]

Best method is to close of that horrible cock on the side of the leg and fit a decent 3/4" thru-hull specifically for the engine cooling, connected through a proper strainer.

I particularly like the forespar strainer.