The primary water intake is the cylindrical screen just above the propeller.
There is really no efficient means of flushing other than using a bucket of water, and the water needs to be high enough to actually cover the water pump.
The flushing attachment that was once sold did not work well, damaged the paint, and kept the propeller from turning.[/QUOTE, i kind of thought that but just wanted to check, i just did find it to be a 1966. im kind of impressed the was it runs, just hope at least waterpump parts are avaliable. thanks for the reply. ken