"Wayne.B" wrote in message
...
On Mon, 8 Oct 2007 20:39:05 -0700, "Calif Bill"
wrote:

On the freshwater, there is a plate blocking off the
risers and the raw water cools them. So just the risers have to be
replaced. Mine are aluminum, and the last ones lasted 14 years.

I assume that is in fresh water, not salt?


I run both. Living near San Francisco Bay, I fish lakes, rivers, bay and
ocean. Last engine lasted about 1450 hours. Was just a wore out 351w after
that time.