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$350 Cub ...Starting ?

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Stan

11-05-2000 15:59:24




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Thanks for all who helped with the 12 volt conversion. Conversion may not be the right word since when I got the tractor a lot of the parts were not there. However. Last night I completed all the wiring and mounting of the Alternator and turned it over for the first time.

It turns over so fast I would almost think that had it tried to fire up at any normal running speed it would be slower. There was no sound at all like it tried to fire. Took out all the plugs and they seem wet with gas. Does this sound like a stuck float. I did take out 2 of the plugs and lay them on the manifold and there was spark.

What would be the next step

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pete

11-08-2000 11:34:39




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 Re: $350 Cub ...Starting ? in reply to Stan, 11-05-2000 15:59:24  
Sounds like your compression is a bit low.If your tractor has a magneto the 12 volt system may be turning it over to fast to start, sounds wierd I know but it happens.



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Bama Binder

11-06-2000 06:47:02




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 Re: $350 Cub ...Starting ? in reply to Stan, 11-05-2000 15:59:24  
Stan...I went through a lot of what you are going through when I was trying to get my Cub started after it had set up for several years (or so the owner said.)

Some things to check that might save you some time.

1. Compression...the L head engines will often turn over fine but they will have stuck valves. No engine will run without compression...a decent tester will only cost $20 or so. If you don't have compression, don't go any farther until you solve that problem.

2. If the engine has sat for a long time, I would replace the following right off the bat: points, condensor, coil, rotor, rotor cap, plug wires, and plugs. It will be $60 well spent. Once you have a good spark and compression, look at the carb.

3. Carb. again, I have found it easier to just go ahead and re-build it to make sure it is sound rather than grind away trying to start the tractor with a bad carb.

4. Make absolutely sure you have the firing order right. Firing is 1-3-4-2...remember the cylinders are numbered 1-2-3-4 from the front. This will drive you crazy if it isn't right.

Post specific problems as the arise, but your current problem is the same thing I had wrong and I had to go back to step 1 above and work my way back through before I could get mine started. Good luck...BB

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Stan

11-06-2000 18:04:41




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 Re: Re: $350 Cub ...Starting ? in reply to Bama Binder, 11-06-2000 06:47:02  
Thanks for all the help guys. I just had time enough tonight to check compression. Lowest is 60 highest is 80. If I read the service manual right it should be 120. Since I am doing this measurement on a cold engine could the actual reading be higher or am I just wishful thinking. If you think this is high enough for a start I will move on to other things...IE ignition... I know I have a lot of work here I'd just like to get it to run so I can move it a little so I know how far I have to go in this project.

Thanks for the help !!

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Jon

11-05-2000 18:47:13




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 Re: $350 Cub ...Starting ? in reply to Stan, 11-05-2000 15:59:24  
I would check the float, but also check the timing. Even if it is flooding, you should have some smoke or signs of life I would think.



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Robert Almstrom

11-05-2000 16:19:15




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 Re: $350 Cub ...Starting ? in reply to Stan, 11-05-2000 15:59:24  
Stan:
I am having problems with my Farmall SC. Sounds like you may be having some same problems.
* Did you try to turn the jet valve? I turn mine in until the tractor starts to sputter then I turn it out 1 full turn. You may want to check with your manual first. * You may want to check the float, but I do not know the measurements.
Hope this helps. Bob



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