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Hunt4Allis 
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Location: Ohio
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 Posted: 22 Jul 2022 at 10:51am |
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It starts immediatly/easy and idles way lower than ever before...( Still a slight delay in throttle response, but better than before) I still need to make sure the points are just opening at TDC and #1 compression (the way my book reads you loosen 2 9/16" clamp bolt just enough to rotate distributor housing so they just start to open...)it says counter clockwise?
Edited by Hunt4Allis - 22 Jul 2022 at 10:53am
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SteveM C/IL
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Joined: 12 Sep 2009
Location: Shelbyville IL
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Posted: 22 Jul 2022 at 11:18pm |
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Your delay may be nothing more than needing the idle screw adjusted a little richer. Turn housing counter clockwise to open points because the shaft goes clock wise to open them. "same difference" You are trying to open them with the shaft /engine/flywheel in a certain spot so you have to turn the housing. Confused yet?
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Hunt4Allis
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Posted: 23 Jul 2022 at 4:45am |
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That could be I will try it, I'll need to look in my manual to see which way to turn the screw. Gotcha!
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Hunt4Allis
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Posted: 26 Jul 2022 at 8:44am |
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My service manual doesn't show carb that I actually have on tractor ( mine has a small bent screw adjustment on vevy bottom and one on top?)
Can anyone tell me where they need set please?
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steve(ill)
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Posted: 26 Jul 2022 at 1:19pm |
HUNT.... i dont know what you have... but normally the bent screw at the bottom is for an adjustable main jet to get MORE or LESS fuel at full throttle... The upper screw would be the low speed / idle screw adjustment... Turn the upper one in till it bottoms out.. count how many turns or 1/4 turns that takes... Normally 1-1/2 turns... Now turn it back out to 1-1/4 turn and check operation.. while running, back out to 1-3/4 and see how it runs... Pick the spot that seems best... Normally 1 to 2 turns out is it.
If you back it out to 2 or more it should start to blubber ... then screw it back in till it cleans up... Screw in to far and it will start to die out..
Edited by steve(ill) - 26 Jul 2022 at 1:22pm
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Like them all, but love the "B"s.
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Hunt4Allis
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Posted: 27 Jul 2022 at 6:12am |
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Ok, where should the bottom bent screw set point be?
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DrAllis
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Posted: 27 Jul 2022 at 6:29am |
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With the engine running wide open, slowly screw the "L" shaped main jet inward until the engine begins to falter. From that point screw it back out one full turn, drive it and fine tune as needed. If it stumbles when you crack the throttle suddenly, give it another 1/4 turn open. If it runs fine leave it alone.
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Hunt4Allis
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Posted: 03 Aug 2022 at 7:51am |
 DrAllis wrote:
With the engine running wide open, slowly screw the "L" shaped main jet inward until the engine begins to falter. From that point screw it back out one full turn, drive it and fine tune as needed. If it stumbles when you crack the throttle suddenly, give it another 1/4 turn open. If it runs fine leave it alone. |
Ok thanks for your info, how much does either of these adjustment screws play in how responsive the throttle lever at steering wheel is compared to actual engine response time when throttle lever is moved?
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DrAllis
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Posted: 03 Aug 2022 at 8:01am |
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None, really. If the L-shaped screw is in too far, it will stumble every time you crack open the throttle, because it is too "lean" in fuel delivery. If it is too far out, it will just use more gas and maybe (and that means maybe) it will smoke black out the exhaust at certain engine speeds. I don't know what your issue is with throttle response. Gas tractors sometimes don't respond to every little movement of the throttle lever like a diesel does. They just don't. But if you pull the throttle clear down from a dead slow idle, the engine SHOULD increase RPMs to full speed in less than ONE SECOND. There is no delay from idle to full speed....none.
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Hunt4Allis
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Posted: 03 Aug 2022 at 9:29am |
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Okay it could be that I got used to how it ran before I did the governor change out and distributor. It does respond like what you're saying it just seems to be delayed on the small movements of the throttle now which it wasn't before
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steve(ill)
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Posted: 03 Aug 2022 at 11:29am |
Car engines use to have a plunger pump in the carburetor to give it that SHOT of gas when you stomped on the throttle......... Tractors and lawn mowers were more of a steady RPM operation and do tend to take a second or two to "pick up speed" as you crack the throttle.. Normally not a big deal... It could be a bit OFF, but nobody will notice . 
Edited by steve(ill) - 03 Aug 2022 at 11:30am
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Like them all, but love the "B"s.
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Clay
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Posted: 04 Aug 2022 at 6:59am |
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Make sure your manifold and manifold gaskets are in good shape. Our D-17 had a slight leak, at one time, which caused a slight hesitation and rough running.
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