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
>
>
> -------------------------------------------------------------
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>
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