This is the second season I have taken my Yamaha T9.9 out of storage
and had problems getting it to run properly. I took extra pains to put it away
properly
last year. I used Stabil in the last tank of gas. I also ran some Sea Foam
through it. The engine was run out until it would not start. I fogged the
engine at
the end and opened a drain plug on the carb to empty any remaining gas. The
engine would
barely start this week and would die when put into gear. I cleaned the jets,
but
missed the jet for mid-range running that was hidden under a plastic cap. My
friendly
outboard mechanic found it and showed me it was blocked. After cleaning this
jet, the
engine finally ran. I am using fresh gas, so that was not the problem. I
have a filter on the gas tank, and there is another one on the engine. It is
possibly a
combination of the newer formulas of gas and the design of these later model
four strokes
(mine is a 2002 with less than 50 hours on it). Some people recommend running
the
engine at least every 3 weeks, which is not always possible, and what about
winter lay-ups? My mechanic recommended using a Mercury product for cleaning
carbs that
is added to the gas tank. I am skeptical, but am trying it any ways. I never
had any of these problems with my old two strokes. That's progress!

Sherwin D.

sherwindu writes:

After cleaning this jet, the engine finally ran.

This problem is typical of any laid-up carbuerated engine, not Yamahas
and/or outboards per se.

On Thu, 04 May 2006 01:42:57 -0500, sherwindu
wrote:

This is the second season I have taken my Yamaha T9.9 out of storage
and had problems getting it to run properly. I took extra pains to put it away
properly
last year. I used Stabil in the last tank of gas. I also ran some Sea Foam
through it. The engine was run out until it would not start. I fogged the
engine at
the end and opened a drain plug on the carb to empty any remaining gas. The
engine would
barely start this week and would die when put into gear. I cleaned the jets,
but
missed the jet for mid-range running that was hidden under a plastic cap. My
friendly
outboard mechanic found it and showed me it was blocked. After cleaning this
jet, the
engine finally ran. I am using fresh gas, so that was not the problem. I
have a filter on the gas tank, and there is another one on the engine. It is
possibly a
combination of the newer formulas of gas and the design of these later model
four strokes
(mine is a 2002 with less than 50 hours on it). Some people recommend running
the
engine at least every 3 weeks, which is not always possible, and what about
winter lay-ups? My mechanic recommended using a Mercury product for cleaning
carbs that
is added to the gas tank. I am skeptical, but am trying it any ways. I never
had any of these problems with my old two strokes. That's progress!

Sherwin D.



And chainsaws and lawnmowers and snowblowers and so on. Little engines
have little tubes.


-- This space available for a really clever sig



This space available for a really clever sig

"sherwindu" wrote in message
...
This is the second season I have taken my Yamaha T9.9 out of storage
and had problems getting it to run properly. I took extra pains to put it
away
properly
last year. I used Stabil in the last tank of gas. I also ran some Sea
Foam
through it. The engine was run out until it would not start. I fogged
the
engine at
the end and opened a drain plug on the carb to empty any remaining gas.
The
engine would
barely start this week and would die when put into gear. I cleaned the
jets,
but
missed the jet for mid-range running that was hidden under a plastic cap.
My
friendly
outboard mechanic found it and showed me it was blocked. After cleaning
this
jet, the
engine finally ran. I am using fresh gas, so that was not the problem. I
have a filter on the gas tank, and there is another one on the engine. It
is
possibly a
combination of the newer formulas of gas and the design of these later
model
four strokes
(mine is a 2002 with less than 50 hours on it). Some people recommend
running
the
engine at least every 3 weeks, which is not always possible, and what
about
winter lay-ups? My mechanic recommended using a Mercury product for
cleaning
carbs that
is added to the gas tank. I am skeptical, but am trying it any ways. I
never
had any of these problems with my old two strokes. That's progress!

Sherwin D.

Well, I just run mine out of gas and leave it for the winter. Has been
starting and running fine for five years and the old one ten. Quit working
so hard winterizing Dan

Maybe you should qualify that to 'Marine Engines'. I start up my 69' Volvo only
on
rare occasions, and it always starts and runs, although sometimes it takes a few

cranks to get it going. I can't believe this is nothing more than a design
flaw.

Sherwin D.

Richard J Kinch wrote:

sherwindu writes:

After cleaning this jet, the engine finally ran.

This problem is typical of any laid-up carbuerated engine, not Yamahas
and/or outboards per se.

Right now I can cure the problem with poking a wire down the jets. I'm afraid
of
doing nothing to winterize and having a major carb rebuild job in the Spring.

Sherwin D.

Danlw wrote:

"sherwindu" wrote in message
...
This is the second season I have taken my Yamaha T9.9 out of storage
and had problems getting it to run properly. I took extra pains to put it
away
properly
last year. I used Stabil in the last tank of gas. I also ran some Sea
Foam
through it. The engine was run out until it would not start. I fogged
the
engine at
the end and opened a drain plug on the carb to empty any remaining gas.
The
engine would
barely start this week and would die when put into gear. I cleaned the
jets,
but
missed the jet for mid-range running that was hidden under a plastic cap.
My
friendly
outboard mechanic found it and showed me it was blocked. After cleaning
this
jet, the
engine finally ran. I am using fresh gas, so that was not the problem. I
have a filter on the gas tank, and there is another one on the engine. It
is
possibly a
combination of the newer formulas of gas and the design of these later
model
four strokes
(mine is a 2002 with less than 50 hours on it). Some people recommend
running
the
engine at least every 3 weeks, which is not always possible, and what
about
winter lay-ups? My mechanic recommended using a Mercury product for
cleaning
carbs that
is added to the gas tank. I am skeptical, but am trying it any ways. I
never
had any of these problems with my old two strokes. That's progress!

Sherwin D.

Well, I just run mine out of gas and leave it for the winter. Has been
starting and running fine for five years and the old one ten. Quit working
so hard winterizing Dan

Sherwin,

I'm sure this will get a few people going, but I'm no fan of four
stroke outboards that will be laid up for periods of time without being
fogged. On an old two stroke, when you shut it down, their's a layer of
oil left on the bearings, rings and cylinder walls, not much to rust.
Now on a four stroke outboard their's no oil on the cylinder walls
(above the oil rings) and compression ring(s), so you can get rust. The
same holds true for four stroke gas inboards, but their not as exposed
to the weather (but they do have problems if you do not use then "now
and then"). It's one of the reasons inboards used frequently tend to
last a long time, and ones that are not used much don't last as long.

John