Please don't take my word as fact; I'm not really a very knowledgable small
engine mechanic, but I think one screw is idle and the other is power
(cruising rpm). AND, there is some danger in running an engine too lean as
it runs hotter and can burn rungs. If it won't run anywhere else, check the
air filter. Also, a jet that will run best only closed is a worn jet.
Bottom line: run it where it runs best. Good luck.

That six horse Evenrude sure gave some service. I ran it for three years,
probably 3hrs a day for 150 days a year, then sold it to a friend who got
another six years from it as a spare. Its biggest problem was that the top
"bearing" wasn't a real bearing; just sleeved in the aluminum block. When
it got older the shaft would wobble, causing the points to become inaccurate
and the motor to start hard and run lousy. Still worked, though.

The other problem was that the Yukon was heavily silt-laden so we'd go
through a water pump rebuild kit every year.

Brad




"Al D" wrote in message
...
On Fri, 23 Jun 2006 02:49:07 GMT, "padeen"
wrote:

I started out with a 4-horse, which was more than adequate for that canoe,
and a tidy bit lighter, but Evenrude had problems that year (1976) with
their 4-horse block getting enough cooling, so I upgraded to the 6. This
worked quite well as I later upgraded (downgraded; wood-canvas to
aluminum)
to a Grumman 19' square-stern and the 6 pushed that along beautifully,
hauling over #1200 of chum salmon at a time.
Brad

That's a lot of salmon! I got my Evinrude 2hp motor working yesterday.
All it needed was a new HT lead and a bit of adjustment on the mixture
screws.

It has two mixture screws on the carb: one above the other. I assume
one is for fuel and the other for air. I wish I knew which was which.
The top screw seems to like to be in the fully clockwise (minimum)
position. Anything else causes the engine to falter.

AL D