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Garden Tractors Discussion Forum

129 Cub cadet not running

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Leroy

08-09-2005 06:14:04




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I have a Cub Cadet 129 that has always been a slow starter. It was bored a few year ago to .10 oversize piston. Last year it got so that it would only run a short while and stop. In line spark tester showed that it had good spark and if I took off carb and cleaned it would run for a while, each time a shorter time with at the end only a couple of minits, then it would no longer start at all. Last spring I Pulled the head and breather plate to check valves as I thought there was something wrong in there but everything is good so I bought some new gaskets and rebuilt the carb again and in putting it back together I had to take the coil off; did not loosen any wires; now I have no spark either with the plug that was in it or with the plug that my 104 was just running with. Could loosening the coil and condenser have broken a ground that I have no spark. I had decided that I had a plug that had shorted internaly so was trying the one out of the other tractor but it would not fire either but back in the 104 it started that tractor right up but it is the one in my other post about the regulator and when it droped loose it burnt a wire off on the 104, mower deck for 104 is broke, and JD 140 just broke so I have to get one running to mow

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Leroy

08-10-2005 05:08:27




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 Re: 129 Cub cadet not running in reply to Leroy, 08-09-2005 06:14:04  
I have not checked the points yet but my question was, I had good fire to the top end of plug before I lossened the coil and condensser to get to the valve adjusting plate and just after I put the plate back on no fire to top end of plug (It wouldn't run before I went into the valves with good fire to end of plug wire) so my question was and still is, is the coil or condenser supposed to br grounded or not? That is the only thing I had changed from good spark to end of plug wire and not running to no fire at end of plug wire so if it is points what would have caused them to go bad just by checking valve clearance and cleaning carb because before that I had fire to end of plug wire now not? When I had good spark thru an inline spark tester but not running I had to assume it was something else but I think now the fire I had was shorting out in the plug instead of reaching the contacts. The only thing between good spark to no spark at end of wire was condenser loose so could that have broke a ground if condenser is supposed to be grounded?

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Ernest

08-10-2005 05:26:00




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 Re: 129 Cub cadet not running in reply to Leroy, 08-10-2005 05:08:27  
Points can be trick items. I had an 86 cub cadet that ran too hot. (points too close) But when were your points replaced last? I know the big Farmall's points are touchy at 4 cylinders. Since we are dealing with 1 cylinder they could be worn out? Sparking intermittantly? Did you take the spark plug wire off the 104 and put it on the 129? My 1650 cub cadet wire was coroded in the spark plug boot. A new one helped!

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Ernest

08-10-2005 04:10:08




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 Re: 129 Cub cadet not running in reply to Leroy, 08-09-2005 06:14:04  
Have you checked the points?



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JT

08-09-2005 11:07:23




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 Re: 129 Cub cadet not running in reply to Leroy, 08-09-2005 06:14:04  
Leroy
Do you ahve 12 volts to the + side of the coil, if you do, then check and see if you have intermitant voltage at the - side fo coil when turning over. Might need new points, condensor and/or coil



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