Short Wave Sportfishing wrote:
On Thu, 12 Jun 2008 08:40:45 -0400, HK wrote:

Modern higher horsepower outboards are *not* easy to service, period. It
doesn't matter whether you have a high tech two stroke or a four stroke.
You're going to need special knowledge, special training, and special
tools, including computer software and the mechanism to get readings off
the engine's I/O port if you are messing around "under the hood beyond
changing the spark plugs.

Well - I"m....shocked. Both types of engines are very complex, but
not nececssarily difficult to work on. I won't work on mine even
thought I have the software and manuals - don't want to mess up the
seven year full parts/labor warranty.


Um..speaking of which, has the warranty on your Yamaha run out yet? I
know it's only, like, what - one year old? :)


Six year warranty.




As for weight, I'm not sure how much it matters in the larger engines.
The 150 hp Evinrude eTec two stroke, for example, displaces about 2.7
liters and weighs 427 pounds. The 150 hp four stroke Yamaha has about
the same displacement and weighs 466 pounds (the Evinrude site has the
wrong weight on the Yamaha 150). Negligible weight difference.

No they don't. That's exactly what the Yamaha weighs with oil/gear
oil/filters/plugs, prop and belts.


Source? My source is my Yamaha manual. Weight with prop, 467 pounds.



In real world tests, the two engines would perform about the same under
most operating conditions. The rather outrageous claims I have seen for
eTec fuel burn could only be true if the Evinrude engineers have figured
out how to cheat the laws of physics.

Not outrageous at all. Why do you think most commercial types are
going Evinrude - maybe because the fuel milage (on mine, 3.78 gph on
average) is FAR SUPERIOR to any four stoke and in particular Yamaha?


Cite, please, for "most commercial types are going Evinrude..." There
aren't many down here. Maybe Evinrude isn't trying to buy market share
down here...

Cite, please, for fuel usage figures, and not from that wild little
Evinrude promo video that's on TV.


Tooling around this morning at idle - amazing fuel flow reading .2GPH.

Point two - not bad huh?

Besides - who would want an engine with a tuning fork emblem on it?
:)

If I run my Yamaha at 600 rpm, I get that sort of gph, too. So what?

Tuning fork? Feh. Who wants a French outboard? :)