You chances are slim that someone has a picture. You could try to buy a
service manual. My experience with most small engines is that he carb is
pretty straight forward. The main jet is going to be immersed in the fuel
bowl if it has one. If not it is still usually pretty obvious. You should
disassemble and clean the entire carb. The idle circuit and any other
compensation circuits are more likely to be gummed up that the main anyway.
The fact that one of them runs at full throttle suggests that as well. At
full throttle it's the main jet you are running on. Lack of idle suggest
the idle circuit. Look for a rebuild kit online or locally as you'll want
to replace the various gaskets and o-rings. Make sure you spray carb
cleaner and if you have it, compressed air through all the small fuel
passages.

wrote in message
ups.com...
Folks....

I have a 15 HP Johnson model J15RENM outboard motor (rope start) and a
25 HP Mariner model 25ELH outboard motor (electric start). Both are 2
cycle engines where you mix the oil with the gas.

Neither motor has run for about 2 years now. Before the long set,
they ran sweet. I took them both out last week, and I now have to run
the 25 HP Mariner at full throttle, and the 15HP Johnson at half
throttle.

The Mariner runs sweet at full choke, but I don't want it that way. I
never used to have it choked at all (except briefly to start it). The
Johnson runs good at half throttle, but then wants to stall once in a
while. As soon as the motor labors and sounds like it's dying, I pull
the choke out a little more. Sometimes I can save it, and sometimes
it stalls. One pull of the rope though is all it takes to start it
again.

Both seem to be starving for fuel, and I'm assuming that it is some
varnish buildup. They ran so good before the 2 year period, that I'm
pretty certain there is nothing mechanical going on. I am going to be
running some SeaFoam through the fuel system this weekend. I've
already run a little through the system, but it hasn't showed signs of
helping yet. I know I have to give that a little more time though.

What I'd like to get is a scan from a manual on either (or both) of
these two motors as to exactly where the fuel filter is, and also how
to get to the carburetor jets. Even a digital picture from a camera
would work for me if someone would happen to have one of these models,
and might happen to have it apart. I'd just like to know where they
are and what they look like before I tear into anything.

Thanks..... Mac