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Rebuilding Carb-Schebler marvel

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jakebah

04-05-2000 19:44:28




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I fought my WD all last year and decide I would try to solve my problem. I get black smoke and have black plugs. I replaced the plugs and now am attempting to rebuild my carb. First, should I change it out to another model? I have read alot of negative comments about Schebler carbs. Next, what is the best method to adjust the carb?
Last silly question. What is the correct setting for the choke. When the choke lever is down, should the opening be covered?

Thanks in advance. I wish I had 1/10th of the knowledge of most of you on this forum....

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Dik L

04-05-2000 20:46:04




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 Re: Rebuilding Carb-Schebler marvel in reply to jakebah, 04-05-2000 19:44:28  

The make of your carb is fine. First make sure that you have the points set properly as well as the timeing. As to the choke setting, think about what the word choke means, the choke butterfly chokes off the air to let the carb draw extra gas for start up. so the butterfly needs to be wide open for normal operation. Your carb may have just one adjusting screw or it could have two. If it has two the idle screw would be the smaller of the two. The larger adjusting screw would be for full load adjustment. Close both screws and reopen them two and one half turns. Start the tractor and warm it up. This most likely will have to be done at about half throttle. You will then slow the tractor down as much as you can without stoping the engine. You will have to adjust both the idle stop screw at the back of the carb on the linkage and the idle adjusting screw on the carb. This screw actualy adjust the air/ gas mixture. At this point turn the screw in very slowly untill the engine starts to slow down then very slowly open the screw untill the engine speeds up and just starts to slow again and you should be close. Check your slow RPM's and if it is to fast or slow reset the stop screw on the linkage, open up the throttle to race the engne several times to make sure it is at a smooth idle. You may have to repete the above to obtain a smooth idle. The full load screw is just that and must be adjusted under full load. this can be done by making 1/8 turns and trying the tractor under load and readjusting the carb untill the tractor works the best. If your carb does not have this screw then it was set by the manufacture with a internal jet. I hope that I have explained this well enough to under stand, it is easer for me to do than explaine.

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charles lefebvre

03-30-2001 09:00:47




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 Re: Re: Rebuilding Carb-Schebler marvel in reply to Dik L, 04-05-2000 20:46:04  
I have a 1932 Dodge Boat with a 4 cyl. 45hp Lycoming engine, It has A model T Schebler Carb .any info on adjustments cleaning etc would be great thanks for your time Charlie



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charles lefebvre

03-30-2001 08:50:55




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 Re: Re: Rebuilding Carb-Schebler marvel in reply to Dik L, 04-05-2000 20:46:04  
I have a 1932 Dodge Boat with a 4 cyl. 45hp Lycoming engine, It has A model T Schebler Carb .any info on adjustments cleaning etc would be great thanks for your time Charlie



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jakebah

04-09-2000 13:42:00




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 Re: Re: Rebuilding Carb-Schebler marvel in reply to Dik L, 04-05-2000 20:46:04  
Thanks Dike L! The settings that you described worked great. I got it started and it ran better than all last year! Now, of course, I have a follow up problem. After rebuilding the carb. and settings, I turned it off. It set for a few hours and I tried it again. It wouldn't start and I noticed the gas just dripped and didn't flow into the glass bowl. I check the line and it was clean. I then pulled the carb back apart and looked over everything. After I put it back on, the gas flowed fine. Again, I let it sit for awhile, same problem with the gas flow a few hours later. I tapped the carb with a hammer and the gas flowed. My assumption is the float is not "floating" properly. Do you think that is it? How can I test he float action? Also, the gas was leaking out of the carb after the second time I started it. Thanks for the help already offered. If anyone has any ideas, let me know!

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