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JD LUC not starting...

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Dan

04-28-2002 09:57:02




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I have new plugs;compression,spark and gasoline in a hand crank model. Perhaps the spark is weak but it doesn't feel weak and I can crank until I'm blue in the face,I get the odd pop out of it. Could it be timing or is there any other ideas out in JD land that I may be able to try. So far the cardiovascular is the only thing getting the workout.Thanks




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mike

04-29-2002 19:44:59




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 Re: JD LUC not starting... in reply to Dan, 04-28-2002 09:57:02  
Dan; I have two LA's and have had various luc's here is what I have found to work for me. First you have to have compression,no leaky valves. If you have blue spark it should work. Timing is set after DC by lineing up DC mark with bottom of timing hole. This is per book.
and will keep engine from kicking back crank. Like Randy I also have better luck restarting if I shut off gas and let run out at the end of the day. I think the book says on a cold engine to open throttle full open and shut choke all the way.Sounds bad starting at full throttle but the book says so and I tried it and it works. I can't seem to flood these out gas seems to run out bottom of carb and not get to plugs so keep the choke shut until it pops.If it sat awhile you may try pulling plugs and primeing some gas in cylinders. Next problem if you get it started is restarting it hot all the settings are differant. I haven't done this much but I have shut them off at the kill buttom on mag. left throttle at slow idle,and turn over few times if nothing I use choke and usually get results. Invite lots of young strong friends over to help
crank and good luck.

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Dan

04-30-2002 10:36:01




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 Re: Re: JD LUC not starting... in reply to mike, 04-29-2002 19:44:59  
Thanks mike, this luc has been an experience alright. I noticed the same thing about them not flooding out but also hearing they are not the easiest starting 2 cyl. I seem to have much better luck when the 2 cyl. is mounted on 4 wheels,(2 small in the fr. and 2 large ones in the rear). Thanks again for your suggestions.



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Randy

04-28-2002 18:14:40




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 Re: JD LUC not starting... in reply to Dan, 04-28-2002 09:57:02  
Dan, I have a LUC that I have restored. I know that if the mag is week it will start hard or start at all. Also, you have to have it timed just right. Check your timing marks out on your flywheel making sure that your number one piston is almost on top dead center. It's good to have a book on these motors to set them. Mine starts hard if I short out the mag to turn it off. I now turn the gas off to stop the engine. I have a book and I'll try to look for it and tell you what it say's. I can remember when I was young my dad had a 12A combine with a LUC engine on it and he would crank and crank on it for a long time befor it took off. Once running it ran great. Good luck with it.

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Dan

04-30-2002 10:43:31




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 Re: Re: JD LUC not starting... in reply to Randy, 04-28-2002 18:14:40  
Thanks Randy, the suggestion of shutting off the gas to stop the engine makes sense. I have an old tractor that re-starts way better that way instead of shorting out the mag, less unburnt fuel in the cyl. I guess. Dan



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