1) clean up your language. This is open forum. Children, priests,
nuns, and Mormons read here.
2) When an engine can't stabilize at a desired RPM, this is called
"word deleted" and the problem is often the "word deleted". I'll tell
you, after your apology for using crude language.

--
Christopher A. Young
Learn more about Jesus
www.lds.org
..


"Jeff The Drunk" wrote in message
news 10 years old, replaced the carb in 2006 at the suggestion of a Lawn
Boy
repair shop. Original plastic carb, throttle shaft sticks disabling
the
governor. New carb was redesigned supposedly to cure this but 4 year
later
running into the same problem. The plastic carb is warping when
tightened
down making either the butterfly stick of the shaft or both.

Temp cure is to loosen the mounting screws (two philips heads) to free
up
the throttle shaft so the governor works. That allows it to be used
but
the engine revs back and forth telling me the shaft is still a bit
sticky. Any looser bolted to the motor and it will suck air at the
gasket
and not run right.

What to do...

Option 1, sand the carb flange with 1000 grit on a flat surface to
make
sure it is flat (like milling a car motor head) ? Over-bore the
throttle
shaft ever so slightly so if the carb flange warps when tightened it
won't seize the shaft? Widen the venturi around the butterfly so if it
is
seizing when the carb is tightened it won't seize? All the above?

I'm tired of fxxxxxx with this Pxx. My kid mowed this morning and
except
for the wide open initial rev (2 seconds) when started and the govenor
oscillation when there is no load on the motor, it actually ran well.
But i know as soon as it sits for a while, maybe a week or two, I'm
going
to have to fxxx with it again.

Your thoughts (besides buy a new mower);