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<DIV><FONT face=Arial size=2>I got it back together and am putting it in the
plane. The brass part of the plunger had noticeable binding when I took it
apart. When I put it back together, it worked smoothly. I think
the leaking was caused by the brass plunger part sticking allowing
the silicon plug to stay open. Also kind of explains why the
engine ran fairly good when I seated the regulator adjusting screw and
afterwards the rest of the fuel stayed in the tank and the tank maintained
pressure------the spring pressure was enough with the adjusting screw seated to
keep the silicon plunger plug seated. Hopefully the clean out did
the trick.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>Now the next problem---I destroyed 2 adjuster screw
O rings trying to get them on the screw---dumb thumb deal----next time I'll
stretch the O ring over an Xacto handle before I put it over the screw
threads. I took the adjusting screw out of another 120 and
didn't mess with the O ring! Question is----can I use
rubber O-rings instead of the ones you buy in the YS package set? I have
one soaking in fuel to see if it swells. I remember years ago I
was rebuilding brake calipers. Soaked them in kerosene or diesel
fuel-----couldn't believe how big those seals got!!! Well, nobody told me
not to do that!!</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>Verne, I'll keep the Q-tipdeal in mind.
Also, I have heard about Leak-Free gaskets----where do you get them.
Central Hobbies or what??</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>Bruce</FONT> </DIV>
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style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=getterflash@yahoo.com href="mailto:getterflash@yahoo.com">Bob
Kane</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=nsrca-dist4@lists.nsrca.org
href="mailto:nsrca-dist4@lists.nsrca.org">IN, KY, MI, OH, WV</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Tuesday, May 26, 2009 9:32 AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-dist4] YS-120NC vs.
me</DIV>
<DIV><BR></DIV>
<DIV
style="FONT-SIZE: 12pt; FONT-FAMILY: times new roman,new york,times,serif">I
was thinking about this again, assuming all the parts check out OK,
there might have been some piece of something stuck in regulator. Would not
take much to cause the leaking you experienced.<BR>
<DIV> </DIV>Bob Kane<BR><A
href="mailto:getterflash@yahoo.com">getterflash@yahoo.com</A>
<DIV><BR></DIV>
<DIV
style="FONT-SIZE: 12pt; FONT-FAMILY: times new roman,new york,times,serif"><BR>
<DIV
style="FONT-SIZE: 12pt; FONT-FAMILY: times new roman,new york,times,serif"><FONT
face=Tahoma size=2>
<HR SIZE=1>
<B><SPAN style="FONT-WEIGHT: bold">From:</SPAN></B> bruce & sandy <<A
href="mailto:bruceher@bright.net">bruceher@bright.net</A>><BR><B><SPAN
style="FONT-WEIGHT: bold">To:</SPAN></B> "IN, KY, MI, OH, WV" <<A
href="mailto:nsrca-dist4@lists.nsrca.org">nsrca-dist4@lists.nsrca.org</A>><BR><B><SPAN
style="FONT-WEIGHT: bold">Sent:</SPAN></B> Monday, May 25, 2009 7:21:09
PM<BR><B><SPAN style="FONT-WEIGHT: bold">Subject:</SPAN></B> Re: [NSRCA-dist4]
YS-120NC vs. me<BR></FONT><BR>
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<DIV><FONT face=Arial size=2>OK Bob,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>All of the parts, except for the gasket of
course, are soaking in fuel. Tomorrow I will re assemble the
parts. Everything looked OK including the small silicone part of the
plunger. I know that it has to seal the hole in the center of the
regulator body and I couldn't see any irregularities which would prevent
that. ( I'm beginning to think it really was a new engine). I
am going to order a couple of diaphragms, plunger assemblies, springs, and at
least one gasket set. I have several YS 120s, and one of them I know has
a home made gasket for the regulator----I haven't tried to run that one
yet. It also had a drilled out exhaust port on the head which I didn't
notice---ended up sending the head to Clarence Lee and he put a brass adapter
in the head so we are back being able to use standard header threads
again---live and learn.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Bruce</FONT></DIV>
<BLOCKQUOTE
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<DIV
style="FONT: 10pt arial; font-size-adjust: none; font-stretch: normal; -x-system-font: none">-----
Original Message ----- </DIV>
<DIV
style="BACKGROUND: rgb(228,228,228); FONT: 10pt arial; font-size-adjust: none; font-stretch: normal; -x-system-font: none; -moz-background-clip: -moz-initial; -moz-background-origin: -moz-initial; -moz-background-inline-policy: -moz-initial"><B>From:</B>
<A title=getterflash@yahoo.com href="mailto:getterflash@yahoo.com"
target=_blank rel=nofollow ymailto="mailto:getterflash@yahoo.com">Bob
Kane</A> </DIV>
<DIV
style="FONT: 10pt arial; font-size-adjust: none; font-stretch: normal; -x-system-font: none"><B>To:</B>
<A title=nsrca-dist4@lists.nsrca.org
href="mailto:nsrca-dist4@lists.nsrca.org" target=_blank rel=nofollow
ymailto="mailto:nsrca-dist4@lists.nsrca.org">IN, KY, MI, OH, WV</A> </DIV>
<DIV
style="FONT: 10pt arial; font-size-adjust: none; font-stretch: normal; -x-system-font: none"><B>Sent:</B>
Monday, May 25, 2009 6:44 PM</DIV>
<DIV
style="FONT: 10pt arial; font-size-adjust: none; font-stretch: normal; -x-system-font: none"><B>Subject:</B>
Re: [NSRCA-dist4] YS-120NC vs. me</DIV>
<DIV><BR></DIV>
<DIV
style="FONT-SIZE: 12pt; FONT-FAMILY: times new roman,new york,times,serif">From
what you describe the regulator is no longer regulating. The regulator has 8
parts, the gasket, regulator body, regulator screw, o-ring seal for the
regulator screw, the spring, the regulator plunger (looks like a small
poppet valve, made of brass) and two other key parts, the diaphragm and the
plunger "tip", both made of silicone. The spring is probably OK, but I'll
bet the diaphragm and the regulator "tip" need replacing. I think you have
to buy plunger and tip together, the diaphragm you can buy by itself. They
are not difficult to rebuild, just pay attention to which side of the gasket
the diaphragm goes on.<BR>
<DIV> </DIV>Bob Kane<BR>getterflash@yahoo.com
<DIV><BR></DIV>
<DIV
style="FONT-SIZE: 12pt; FONT-FAMILY: times new roman,new york,times,serif"><BR>
<DIV
style="FONT-SIZE: 12pt; FONT-FAMILY: times new roman,new york,times,serif"><FONT
face=Tahoma size=2>
<HR SIZE=1>
<B><SPAN style="FONT-WEIGHT: bold">From:</SPAN></B> bruce & sandy
<bruceher@bright.net><BR><B><SPAN
style="FONT-WEIGHT: bold">To:</SPAN></B> nsrca d4 list
<nsrca-dist4@lists.nsrca.org><BR><B><SPAN
style="FONT-WEIGHT: bold">Sent:</SPAN></B> Monday, May 25, 2009 7:08:00
AM<BR><B><SPAN style="FONT-WEIGHT: bold">Subject:</SPAN></B> [NSRCA-dist4]
YS-120NC vs. me<BR></FONT><BR>
<STYLE></STYLE>
<DIV><FONT face=Arial size=2>Hi Guys,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Need a little help/advice here. Trying to
get this YS-120NC running that I bought several years ago. I think it
was supposed to be new, but you know how that goes. I think it's a
regulator problem, but I have almost no experience with regulators.
I'm sure you realize how rare someone with YS engine experience is in and
around Quincy, Ohio!!</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>First attempts--High speed needle about 2 turns
out. Regulator adjusting screw even with top of regulator
housing. Finally got a real rough idle (think I turned regulator
adjusting screw in slightly). Advancing throttle killed it right away,
indicating a real rich idle. I was tired and put plane in barn.
While I was away all of the unused fuel syphoned out of the tank on
to the floor (no biggie, remember it is a barn!). Hard to tell
where it leaked out (inverted engine) imagine it came out the carb
intake, but it certainly came through the regulator.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>In desperatiion, yesterday I screwed the
regulator adjusting screw all the way in until it seated. Don't think
I backed it off at all. Engine started with a kind of rough
idle. Transition to full throttle (needle 2 turns out) was good.
I didn't play anymore. Imagine if I back off the adjusting screw to
get a smooth idle, the unused fuel will again syphon out of the
tank.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>So, you YS wizards, what do I do?
If I should replace the diaphram in the regulator, do I replace the
spring too? Guess replacing the gasket is a given.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Sorry about this, but I don't have anybody to
talk to.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Thanks,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Bruce</FONT></DIV></DIV></DIV></DIV><BR>
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