Y.S.140L

[David Harmon]

The check valve is leaking from the tank to the engine or the plunger in
the regulator is not seating properly or is damaged. Sometimes there is
a little mold flash around the circumference of the rubber 'regulator
plunger. This is YS part #49 on the exploded view of the engine.
My guess is the check valve considering that it runs good.

Dave
NSRCA 586

-----Original Message-----
From: discussion-request at nsrca.org [mailto:discussion-request at nsrca.org]
On Behalf Of flyboy422 at juno.com
Sent: Tuesday, May 06, 2003 2:59 PM
To: discussion at nsrca.org
Subject: Y.S.140L



  Okay all you Y.S gurus' out there. I have a YS140L that runs great.
Excellent idle, good transition and good top end. The only problem is as
soon as it gets pressure it siphons fuel out of the Carb. and won't stop
till the tanks empty. Any ideas?

         John Santonocito
         Buffalo, N.Y.
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