[AT] A Few Questions

[charlie hill]

Doug, I agree completely about fuel starvation.  It's been my experience 
with Zenith and M&S carbs that fuel starvation is usually due to trash or 
water in the main jet but it could also be obstruction in the fuel tank or 
line.
It would be wise to check all of the above.

Charlie

-----Original Message----- 
From: Doug Tallman
Sent: Tuesday, July 05, 2011 10:14 AM
To: Antique tractor email discussion group
Subject: Re: [AT] A Few Questions

Ben, in answer to #1, The tractor that has to run with the choke on is
suffering from fuel starvation! The choke should only be needed for
starting and warming up. I'd try adjusting the main jet on the surging
tractor. It's probably running a little on the rich side if the choke
doesn't help it. The other thing could be some kind of a misfire. It
could veery well be that when both engines are running right, you will
find the answer to your #2 question! Doug T







Ben Wagner wrote:
> Hi everyone,
>
> I've got a few questions concerning my 1945 Farmall A.  I just started it
> up
> for the first time in four months yesterday after a paint job.  I'll
> number
> the questions so that they are easier to reference.
>
> 1.  The tractor runs fabulously.  It starts right up, even after sitting
> for
> four months, and is the most dependable engine I could want in an old
> tractor.  My only objection is that the engine surges whenever I adjust
> the
> throttle, unless I slowly creep the throttle up or down.  The surging
> stops
> if I slow the engine down.  My other tractor, the 1948 Super A, will also
> surge but only when the choke is not adjusted at exactly 1/2 choke.  The
> 1945 A will not run well unless the choke is completely open.  Because the
> engine on the 1945 A runs so well, I hesitate to do any adjustments on the
> carb.  Does anyone have any advice?  I can live with the surging, even
> though it is a little irritating, but I would like to be able to advance
> the
> throttle without the concern of the surging.
>
> 2.  I used the tractor this winter before a paint job for snow removal.  I
> remember thinking that the engine sounded incredibly loud.  Yesterday, I
> had
> both tractors out, and the 1945 engine sounds much louder than the 1948
> Super A.  I'm wondering if the muffler is working, since the muffler is
> original "Stanley" vintage.  Is there any way to clean the soot out of the
> muffler, without taking it to a muffler shop?
>
> On the other hand, if the muffler is fine, which is something I may test
> soon with my other tractor, what would make the engine sound like a two
> cylinder?  It has a distinctive "putt-putt" versus the smoothness of the
> Super A, although the Super A is not as good an engine.  Like I mentioned,
> I
> really don't want to mess with the engine since it runs so well.  I'm
> halfway wondering if the modern ethanol gasoline is part of the problem!
> But then again, the muffler could not be working, causing me to hear the
> pure engine firing.
>
> 3.  This question is for anyone who has adjusted, or knows how to adjust,
> a
> Farmall A, B, or C series clutch.  The clutch only begins grabbing when
> the
> pedal is about 1/2 to 1 inch from being completely up.  There is no
> freeplay.  How can I adjust the clutch to give me a little freeplay and a
> longer engagement travel?
>
> Thanks for your help.
>
> Ben Wagner
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>

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