YS 140DZ fault?

[PENNISI Peter]

Thanks Terrence,
 
A big problem I am having is it wont go to full throttle. At about 1/3
throttle or less it goes lean and stops. How can this be rich. I tried this
approach even at 1 1/2 turns out on main needle with the same results. What
about the loud metal rattle that is coming from the pump assembly.
 
Regards,
 
Peter
-----Original Message-----
From: T&C Brown [mailto:tncbrown at charter.net]
Sent: Wednesday, 23 April 2003 1:01 PM
To: NSRCA
Subject: Fw: YS 140DZ fault?


 
Peter,
 
It sounds like your running the engine way too rich.  When I got my first
DZ, I set it up the same way, and had the same problem.  You cannot run it
like an "L".  If you have adjusted the pump from the factory
setting......return it to it's original position and start with the high
speed needle at 1 1/8 to 1 1/4 turns out from full closed.  If the motor
starts.....let it warm up a minute then advance it to full throttle.  Once
at full throttle, slowly  (one or two clicks at a time) turn the needle in
to lean it until the RPM drops.  Once you hear the RPM start to drop, richen
it back three or so clicks and run it.  I know what your thinking...."It
sounds way to lean"  but this is how Richard from YS Performance told me to
set it up, and I've had no problems with this.  Once the motor is broke in
the high speed needle should be around 3/4 to 1 turn out from full close.
Hope this helps.
 
Terrance Brown
YS Field Rep
 
 


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