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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>I took the carb apart and everything
looked normal and clean. I replaced all fuel tubing. I got about
one minute into a test run and – sudden stoppage – at about 1/3
throttle. The crank turns freely about a quarter turn but hits hard stops
in both directions. Doesn’t look good.</span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>I am very mechanical and have been into a
lot of engines but never a four stroke. Should I tear this down myself or
send it to someone? If so who? Any idea on lead time?</span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> </span></font></p>
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<p class=MsoAutoSig><font size=3 color=navy face="Times New Roman"><span
style='font-size:12.0pt;color:navy'>Ron</span></font></p>
<p class=MsoAutoSig><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> </span></font></p>
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<p class=MsoNormal><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma'>-----Original Message-----<br>
<b><span style='font-weight:bold'>From:</span></b>
nsrca-discussion-bounces@lists.nsrca.org
[mailto:nsrca-discussion-bounces@lists.nsrca.org] <b><span style='font-weight:
bold'>On Behalf Of </span></b>vicenterc@comcast.net<br>
<b><span style='font-weight:bold'>Sent:</span></b> </span></font><font size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>Tuesday, August
26, 2008</span></font><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma'> </span></font><font size=2 face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma'>10:48 AM</span></font><font
size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'><br>
<b><span style='font-weight:bold'>To:</span></b> General pattern discussion<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [</span></font><font
size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>NSRCA</span></font><font
size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>-discussion]
YS FZ63S Trouble</span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> </span></font></p>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>I agree with Don. Looks like there is an air leak. I will
do the easy stuff first like replace <em><b><i><font face="Times New Roman"><span
style='font-weight:bold'>all</span></font></i></b></em><strong><b><font
face="Times New Roman"> </font></b></strong>the fuel lines. Small hole or
cut in the fuel line could be a problem. </span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> </span></font></p>
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<div id=signature>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>--<br>
Vicente "Vince" Bortone</span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> </span></font></p>
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<blockquote style='border:none;border-left:solid #1010FF 1.0pt;padding:0in 0in 0in 3.0pt;
margin-left:2.5pt;margin-top:5.0pt;margin-bottom:5.0pt'>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>-------------- Original message -------------- <br>
From: "Don Ramsey" <don.ramsey@suddenlink.net> </span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face="Times New Roman"><span
style='font-size:11.0pt;color:#1F497D'>It’s possible that the high speed
needle has vibrated it’s seat open. The 120s would do this because
of weight of the needle valve. Once the brass seat is opened, you have to
replace the assembly.</span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face="Times New Roman"><span
style='font-size:11.0pt;color:#1F497D'> </span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face="Times New Roman"><span
style='font-size:11.0pt;color:#1F497D'> </span></font></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
nsrca-discussion-bounces@lists.nsrca.org
[mailto:nsrca-discussion-bounces@lists.nsrca.org] <b><span style='font-weight:
bold'>On Behalf Of </span></b>ron@inweldcorp.com<br>
<b><span style='font-weight:bold'>Sent:</span></b> Tuesday, August 26, 2008
10:38 AM<br>
<b><span style='font-weight:bold'>To:</span></b> NSRCA<br>
<b><span style='font-weight:bold'>Subject:</span></b> [NSRCA-discussion] YS
FZ63S Trouble</span></font></p>
</div>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I have a YS FZ63S on my Oxalys 50. The engine probably
has about one hundred 12 minute flights on it.</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>The first trouble I noticed was that I had to trim the idle
up to keep it running but the engine ran strong at full throttle.</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>After another 10 or 12 flights the engine would not develop
full power. Also, the high speed needle valve is more sensitive where
before it was difficult to tell exactly where the highest rpm was. Also
the idle has to be trimmed way up as the engine warms up and it quits when
trying to transition to high speed.</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I have installed a new glow plug, adjusted the valves,
adjusted the high and low speed mixture with no improvement. I see no air
restriction to the carburetor. The fuel filter looks clean. What
should I try next?</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=MsoAutoSig><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Ron Needham</span></font></p>
<p class=MsoAutoSig><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> </span></font></p>
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