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Posted by dan on March 31, 2008, 7:13 pm
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> Art wrote:
>
> > dan wrote:
> > > dan wrote:
> > >
> > > > Ryobi 775R.
> > > >
> > > > I changed the spark plug and put in new fuel. It starts just
> > > > fine but when I give it gas, it just bogs down and dies. Any
> > > > thoughts to why? How can I adjust the two carb screws on top?
> > >
> > > Ok, the air/fuel adjustments only go one full turn. I adjusted
> > > both a half turn going from one end of the spectrum to the other.
> > > Nothing. I think I'm going to do a compression check - although, I
> > > have no idea what the compression should be on this guy. I think I
> > > may inspect the carb as well.
> > >
> > If it runs at all don't waste you time with a compression test.
> >
> > It is starving for fuel when you accelerate. If richening the low
> > speed (turn out 1/4 turn) does not make it accelerate then I would
> > suggest replacing the fuel with fresh (from the station, not from a
> > can that was filled last season) and a new fuel filter. Pay
> > attention to the condition of the rubber fuel line. If it's mushy
> > or splits easily when putting on a new fuel filter then you might
> > as well go get a carb kit for it also.
>
> New fuel = Fresh fuel from the pump.
>
> I opened part of the carb and found some "sludge". It looked like wet
> sugar. Very little but I ordered a carb kit anyway. I'll post my
> results.
Cleaned and rebuilt the carb. It runs now. Saved me from having to buy
a new trimmer, although at $45 for the rebuild kit, I'm part way there.
If it lasts another year, it was worth it.
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