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I need a little more help from you guys

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Tom Smith

11-21-2002 07:02:39




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I took the Carb off last night and found that I was getting gas up top , but not enough. Can anyone tell be the proper adjustments for the carb? How far the Screws should be backed out and if they should be turned all the way in and then backed out? Plus when I took the carb back off, I found more crud in it that probably wasn't helping it either. It appears that it the crud feel into it as I was putting it back on. So I cleaned the Carb again. Thanks

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Ray,IN

11-22-2002 19:20:30




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 Re: I need a little more help from you guys in reply to Tom Smith, 11-21-2002 07:02:39  
I'll try to relay this the best I can. All the guys include some good information in thier post. Please permit me to add to them. Norm's advice to throughly clean the carb is excellent, however, do not use compressed air in the gas inlet port- you'll blow the screen away. It sounds like you need to reclean, beginning with the gas tank, onward to the carb by disassembling everything and soaking in cleaner. The carb adjustments are as MikeP said, close the adjustment screws until lightly finger tight. Open the idle air adjustment screw 7/8 of 1 turn and open the power screw 1 /1/4 turn initially. When at operating tempurature, readjust the power screw while under heavy load (plowing etc.) as Mike P said to obtain quick throttle response. This will result in a rich mixture at idle, and is the engineered setting for Harry Ferguson tractors because they use fuel mixture for additional engine cooling. Whew! That's my brainstorm for tonight, hope it helps. No vacation Phil, computer is old and forgetfull-like me, and needed to see the Dr. for a tuneup.

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Norm

11-21-2002 18:45:16




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 Re: I need a little more help from you guys in reply to Tom Smith, 11-21-2002 07:02:39  
Hi Tom, I would like to add that it would be best to soak it completely submerged in a dissasembled state if you can overnight in a carb cleaner solution. Then as my previous post on the same matter suggested, use compressed air to clean all openings and reassemble. The float normally is set at 1/4" from the top of carb casing when main needle is closed. You normally check this just before mating both halves. Also please check for choke butterfly shaft wear. They tend to wear nearest linkage for choke cable. This can allow too much air drawn in through there and lean it beyond adjustment. If it is the case you may purchase a new one or use a gasket type washer and block shaft circumference when tightening. (temp solution)

Good Luck

Norm in Ontario

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Phil (VA)

11-21-2002 10:23:29




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 Re: I need a little more help from you guys in reply to Tom Smith, 11-21-2002 07:02:39  
Tom, I think the initial settings are between 1.5 turns out and 2.5 turns out. I forget which one is which. Ray (IN) usually chimes in with that info, but he might be on vacation or something. However, these settings, if around 2 turns out, are not very sensitive for initial starting. That is, they rarely cause serious trouble if they are anywhere close, and then after it is running you can set them more precisely. Do not tighten them as that will mess up the brass seat ends. Just barely touch them to seat to determine where to start from. Having said all that, based on your latest observation, it appears to me that you might have some crud upstream of the carb that continually washes down and messes up your carb. I'd look at that.

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James, UK

11-21-2002 08:06:38




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 Re: I need a little more help from you guys in reply to Tom Smith, 11-21-2002 07:02:39  
If it's a TE/TO with a Zenith 24T carb, from fully closed on the main jet open it 2.5 to 3 turns. That should get it started. Then run it until it's at its normal operating temp., and adjust to get the mixture right. This will be when:-

1) You whack the throttle open you don't get a puff of black smoke. If you do, its rich.

2) You whack the throttle open and it doesn't hesitate or cough. If it does, its weak.

The idle screw (up near the throttle butterfly) you need to adjust along with the throttle stop on the carb linkage to give you a smooth running 600rpm.

If it isn't a Zenith carb - maybe someone else can help.

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Tom Smith

11-21-2002 10:13:39




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 Re: Re: I need a little more help from you guys in reply to James, UK, 11-21-2002 08:06:38  
Its a Marvel-Schebler or what ever they are called.



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Mike P

11-21-2002 13:04:45




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 Re: Re: Re: I need a little more help from you guys in reply to Tom Smith, 11-21-2002 10:13:39  
Tom - According to a carburetor article in the June 2002 Ferguson Furrows, for the Marvel-Schebler carb "Set idle and main adjusting screws at 7/8 and 1-1/4 turns respectively. These settings should be adquate for normal operations. However, if necessary, the main jet can be opened to 1-3/8 turns under heavy load." Mike P



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Tom Smith

11-25-2002 07:38:50




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 Re: Re: Re: Re: I need a little more help from you guys in reply to Mike P, 11-21-2002 13:04:45  
Well guys, after I finished my honey-do list last night I re-assembled the carb that I had previously cleaned friday after I read all your tips. And as most of you probably thought, it was dirty again even though I had just cleaned it! (By the way I am getting ever closer to taking the Bucket loader off and selling it, do to its getting in my way all the time) Some crud had found its way in and I dismantled the carb and cleaned it again. So tonight I will try to make it go(again). Thanks for all the help and tips. I will let you know the results.

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Tom Smith

12-02-2002 06:28:03




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 Re: Re: Re: Re: Re: I need a little more help from you guys in reply to Tom Smith, 11-25-2002 07:38:50  
Well I have good news and bad news. The Good News is: The Tractor finally started. The bad new is I had to use starting fluid and once it ran out of the starting fluid it would stop. Everytime I come out to work on the Tractor the carb is saturated with fuel. And everytime I would start the tractor with starting fluid and I would try and move the throttle it would just die. When I leave the throttle lever alone it still die's. I am not getting gas from the carb to the intake. And Gas is coming out of the carb somewhere. So I think I need a new carb. When I put the carb back together this time I noticed that the carb doesn't line up with it self (top and bottom) so it looks like it doesn't seat right. So I think that the gasket isn't sealing right therefor the gas is just leaking out the sides. Any ideas? Or should I just bight the bullet and my a new carb. I had put the carb kit in it and that hasn't helped so.....

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