Gene wrote:
On Fri, 19 Dec 2008 17:53:46 -0500, "Billgran"
wrote:

"John" wrote in message
...
I called the dealer. He said to connect the hose at the flushing
attachment, but not to let the engine get over idle speed.


If the dealer said to use the flusher hose and fitting under the motor's
powerhead, I'd be having a word with that dealer person. The Yamaha owners
manual, service manual, and training seminars state specifically NOT to run
the motor using it. Only run the motor with the "earmuff" type flushers
around the gearcase, preferably the dual hose feed style muffs.

Bill Grannis
service manager



Curiosity..... why the dual hose stuff? When I had Yamahas
(admittedly, old tech) the intake was just an open galley... if there
was enough supply volume to prevent cavitation... it seemed no foul.

I have to believe that flushing scheme worked, since they served me
for 18 years and went North of the border to a new owner to do a
second tour of duty......

You would think so but it just doesn't work as well. My smaller
outboards and I/O had no trouble with the single sided muff.