YS .53 Issues - Please help

george kennie geobet at gis.net
Thu Feb 20 08:59:20 AKST 2003


How come I can't delete the following e-mail.
Georgie

ORLANDO FRETS wrote:

>  Van:If the diaphragm wads intact, and not sticky or gooy after you
> cleaned it, then check the check valve. Something may not allow the
> diaphragm in the check valve to fully close. A small grain of almost
> nothing will prevent it from sealing. ORLANDO
> FRETSojfrets at earthlink.netWhy Wait? Move to EarthLink.
>
>      ----- Original Message -----
>      From: Bob Kane
>      To: discussion at nsrca.org
>      Sent: 2/18/2003 9:03:14 PM
>      Subject: Re: YS .53 Issues - Please help
>       I can't tell from your description if you removed the
>      regulator body or just the adjuster screw. As viewed from
>      side opposite the regulator screw, the regulator is made up
>      of a silicone rubber diaphram (a thin disk), a brass plunger
>      which passes through the body of the regulator, the silicone
>      fuel valve on the stem side of the plunger, the sping,
>      o-ring, and adjuster. From your description it sounds like
>      the small silicone fuel valve on the stem side of the
>      regulator is missing/damaged, allowing pressurized fuel to
>      pass freely to the carburetor. Check out this picture at
>      Central Hobbies
>      http://www.centralhobbies.com/Engines/parts/YS140LEX.htm It
>      has a clear picture of the regulator parts. (The YS53
>      picture shows the plunger on the wrong side of the regulator
>      body) The plunger and the fuel valve are sold as a unit
>      under one part number.  It and diaphram should be clear or
>      nearly so (like clear silicone sealer looks when dry). If it
>      is gummy, the goo you found could be the result of petroleum
>      based after run oil. You should replace the diaphram and the
>      plunger
>
>       Van - E-Mail LIST <extra330 at tampabay.rr.com> wrote:
>
>           All, I purchased a used YS .   I removed the
>           regulator screw, o-ring, piston and diaphragm,
>           they where VERY gummy, so I cleaned them very well
>           and re-installed. Motor runs better, and will idle
>           around 2500 as of now, but fuel POURS out of the
>           carb even if I have the throttle closed off. I'm
>           using 20% Cool Power with added oil to bring the
>           content to 20%, and OS "Type F" plugs. APC 11x7
>           prop The motor is set at 2 1/2 turns open on the
>           High Speed needle, and 1 turn open on the low
>           needle. The check valve I am using is from an OS
>           1.40, not a YS, there was no YS valve with this
>           engine. Questions: 1 - Why the fuel pouring out of
>           the carb ?2 - How do I get the idle better
>           adjusted.3 - Should any further cleaning be done
>           to the engine ? Much thanks
>           ! ________________________________________
>           Van Flowers
>           NSRCA "K-Factor" Advertising Manager
>           AMA 6216,  NSRCA 2778
>           813-784-3794
>           extra330 at tampabay.rr.com
>           www.nsrca.org
>
>      Bob Kane
>      getterflash at yahoo.com
>
>
>      -------------------------------------------------------------
>      Do you Yahoo!?
>      Yahoo! Shopping - Send Flowers for Valentine's Day
>
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