Fresh water flushing

[kt2]

"Hi 90hp 4T mariner, we cant s

"Hi 90hp 4T mariner, we cant seem to get the fresh water flush on the engine to take water, pumps fine in normal use, as the boat is floating we cannot use muffs ... Any ideas"

 

[benjamin_jones]

Submerse the muffs if the hose

Submerse the muffs if the hose is long enough?

I've seen it done in a harbour here in SA.