[Rhodes22-list] Outboard repair question

Rick sloopblueheron at gmail.com
Sat Aug 29 11:52:49 EDT 2009 

Was or is your motor connected to a remote control?  That would explain the
lack of throttle or idle adjustment on the tiller--pretty much the reason
for that screw.  Did you ever try just running detergent laden fuel through?

Rick

On Sat, Aug 29, 2009 at 11:38 AM, atmcneil <atmcneil at gmail.com> wrote:

>
> Well, I rebuilt the fuel pump yesterday and reinstalled it, and am sorry to
> say it didn't fix it.
>
> I have the bench manual and it was talking about the "throttle adjustment
> knob" on the tiller. Well, mine isn't connected to anything and just spins.
> That may have something to do with it.
>
> dang this is frustrating.
>
>
>
>
>
> Rick-139 wrote:
> >
> > Rummy,
> >
> > Today was perfect for cruising the North Coast.  We decided to stop in at
> > Wildwood YC for lunch and you won't believe who helped me tie up.  It was
> > the last owner of the OMC dealership for this area.
> >
> > Of course, he was delighted to see my trusty Yachtwin the PO had bought
> at
> > his old store.  Reluctantly (do I lie?), I brought up our argument.  He
> > laughed and said Evinrude typically put diaphragm carburetors on their
> > high
> > end models. In fact, the diaphragm carburetor was part of defining the
> > Yachtwin because they do so well maintaining a steady RPM when the boat
> is
> > pitching and heeling.  And I must say, it works very well with mine in
> the
> > worst conditions.
> >
> > Unfortunately, he could offer no advice on atmcneil's problem.  He sold
> > 'em,
> > didn't fix 'em.
> >
> > Anyway, buddy, if you have a genuine Yachtwin, you have a diaphragm
> > instead
> > of a float in your carburetor.
> >
> > Rick
> >
> > On Fri, Aug 28, 2009 at 6:42 AM, <R22RumRunner at aol.com> wrote:
> >
> >> Rick,
> >> First of all, a carburetor does not have a diaphragm. It might have a
> >> float bowl with a float in it, but no diaphragm. Replacing the fuel pump
> >> diaphragm is probably the easiest thing you can do. Simply remove the
> >> cover
> >> from
> >> the pump, remove the old diaphragm, install the new one and replace the
> >> cover.  Screwing with the idle and high speed jets is like doing brain
> >> surgery
> >> on  someone who simply has indigestion.
> >> Trust me on this one. The fuel pump works off of vacuum that is created
> >> by
> >> the internal workings of the engine. When he said it would only run on
> >> high
> >>  speed (throttle wide open) I knew exactly what it was. It's sucking gas
> >> through  the fuel pump into the cylinders, bypassing the carb. Ta Dah!
> >>
> >> Rummy
> >>
> >>
> >> In a message dated 8/27/2009 5:17:06 P.M. Eastern Daylight Time,
> >> sloopblueheron at gmail.com writes:
> >>
> >> Cool it,  Rummy.  This is a constant fuel velocity design that is
> running
> >> full  out.  A simple idle control adjustment should be tried before
> >> major
> >> surgery.  If there is a diaphragm problem, the carburetor  diaphragm (if
> >> there is one) is a more likely culprit with gunk holding it  down to let
> >> in
> >> too much air. A detergent additive or a tank of high  detergent gas
> could
> >> solve it.
> >>
> >> With these engines, the  quality/stability of the engine oil is more
> >> significant than the quality of  the gas.  I stick with OMC's products
> >> just
> >> to be  safe.
> >>
> >> Rick
> >>
> >> On Thu, Aug 27, 2009 at 9:06 AM,  <R22RumRunner at aol.com> wrote:
> >>
> >> > Rick and  Andrew,
> >> >
> >> > This is the last time I'm going to tell you what is  wrong. IT'S THE
> >> > DIAPHRAGM IN THE FUEL PUMP. REPLACE  IT.
> >> >
> >> > Rummy
> >> >
> >> >
> >> > In a message dated 8/26/2009  6:13:59 P.M. Eastern Daylight Time,
> >> > sloopblueheron at gmail.com  writes:
> >> >
> >> > Andrew,
> >> >
> >> > This engine is a 2  stroke--generally not bothered by  old gas.
> >> >
> >> >  Rick
> >> >
> >> > On Wed, Aug 26, 2009 at 6:06 PM, Andrew Collins   <
> >> > sailingvesselcarmen at gmail.com> wrote:
> >> >
> >> > >  Make sure you  have fresh, treated gas. I have a new Tohatsu 4
> >> stroke
> >> > > that Will not  idle if the gas is more than a couple  of weeks old
> >> > > This gets worse  with humid weather
> >> >  > Another symptom is loping at médium speeds I Will  get a filter
>  for
> >> > > NeXT season
> >> > > Andrew
> >> > >
> >> > >  Sent from  mobile device.
> >> > >
> >> > > On Aug 25, 2009, at  10:41 AM, atmcneil  <atmcneil at gmail.com>
> wrote:
> >> >  >
> >> > > >
> >> > > > I have an  '94 Yachtwin  (Evinrude) 8hp outboard that has a
> >> problem.
> >> > > > It   starts
> >> > > > but will only run at full throttle. It won't idle  at  all.
> >> > > >
> >> > > > Has anyone had this problem  and how do you fix  it?
> >> > > > --
> >> > > > View this  message in context:
> >> > >
> >> http://www.nabble.com/Outboard-repair-question-tp25135659p25135659.html
> >> >  >  > Sent from the Rhodes 22 mailing list archive at  Nabble.com.
> >> > >  >
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> --
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> Sent from the Rhodes 22 mailing list archive at Nabble.com.
>
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