[AT] AR JD

[Dean VP]

Ralph,

I'll listen to the sounds but I would be surprised if one will be able to pick up any tappet noise.
Usually the rest of the sounds kind of wash everything out on a home video recording. 
A possible reason why you need to be so handy with the choke may be that the float is set too low.
The MS carburetor for that tractor doesn't have an accelerator pump like what is often on an
automobile carburetor. On autos/truck that little pump gives an extra shot of gas during changes in
load or a sudden increase in speed is desired. So the MS carburetors have a chamber for some extra
gas through the load nozzle to be available if there is a sudden need for extra fuel. If the float
isn't set correctly, ie, gas level in the carburetor isn't high enough, this extra slug of gas isn't
available.

However, since this tractor sets around w/o being used much, the small holes in the Load Nozzle may
be plugged or partially plugged.  It is best to run the tractor empty by shutting the gas off and
then letting it run until it runs out of gas. Usually there is also a drain on the carburetor to
allow the carburetor to be drained completely empty. If this is done when the tractor is stored for
a period of time, then the gas won't gel and mess up the carburetor. I do that on all of my tractors
and any equipment that isn't used often. An example, I have a 5000 watt generator for the house to
backup the power. It can set months w/o being used. I always run it dry when shutting it off. Then I
turn the gas back on when I need it and it usually pops off on the second pull. Have had it for 12
years and have never had to fix anything on it.  Always starts good and runs good.


Dean VP
Snohomish, WA
"Socialism only works in two places: Heaven where they don't need it and hell where they already
have it." - Ronald Reagan
"The trouble with socialism is that eventually you run out of other people's money." - Margaret
Thatcher


-----Original Message-----
From: at-bounces at lists.antique-tractor.com [mailto:at-bounces at lists.antique-tractor.com] On Behalf
Of Ralph Goff
Sent: Thursday, September 16, 2010 8:56 AM
To: Antique tractor email discussion group
Subject: Re: [AT] AR JD

Thanks for the feedback on the "AR" Dean. I had just assumed that this 
engine would be pretty well set to specification as my Uncle quite often had 
mechanics work on it for various things. The valve noise, if thats what it 
is, can be heard quite noticeably in the short video I have. I'll try to get 
it somewhere on the net where you or others can listen and offer their 
opinions. This tractor runs reasonably well considering all the time it has 
spent in storage for the past 8 years. Carburetor is a little off and I have 
to have a hand on the choke button any time I engage the clutch or else it 
will stall.

Ralph in Sask.

----- Original Message ----- 
From: "Dean VP" <deanvp at att.net>
To: "'Antique tractor email discussion group'" 
<at at lists.antique-tractor.com>
Sent: Thursday, September 16, 2010 1:34 AM
Subject: Re: [AT] AR JD


> Ralph,
>
> Nice looking AR. Without hearing it myself it is hard to say whether it 
> has normal or too much
> tappet noise. I've learned to go by my gut on these kinds of things. If it 
> bothers you, the settings
> should be checked. It isn't all that big a deal to pop the tappet cover 
> and do some checking. Might
> want to be prepared with a replacement gasket.  I don't have a manual 
> handy for your AR but I'm
> pretty sure the Tappet Clearance is supposed to 0.020".  Just a few 
> thousands off can effect timing
> about 4 degrees per 0.001" off. The correct tappet setting might give a 
> little improvement in engine
> performance as well. Worth a check.
>
> Dean VP
> Snohomish, WA
> "Socialism only works in two places: Heaven where they don't need it and 
> hell where they already
> have it." - Ronald Reagan
> "The trouble with socialism is that eventually you run out of other 
> people's money." - Margaret
> Thatcher
>
> -----Original Message-----
> From: at-bounces at lists.antique-tractor.com 
> [mailto:at-bounces at lists.antique-tractor.com] On Behalf
> Of Ralph Goff
> Sent: Wednesday, September 15, 2010 8:03 PM
> To: Antique tractor email discussion group
> Subject: [AT] AR JD
>
> Had to fire up the old AR John Deere yesterday while re-arranging stuff in 
> the shed. Took it out to
> blow the dust off and get all the fluids warmed up a little as this 
> tractor does not see much use
> anymore.
> Took a little video that I hope to upload to the net one of these days 
> when I have a more user
> friendly connection. For now here is a still photo.
> I notice what seems to be a lot of valve noise at slow idle. Is that 
> normal for these 2 cylinder
> engines or should I be adjusting the tappets?
>
> http://hotimg23.fotki.com/p/a/142_165/24_48/ARSept2010-vi.jpg
>
> Ralph in Sask.
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