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  #1  
Old 10-16-2013, 09:46 PM
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kstrutz50 kstrutz50 is offline
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Default Cub 100 Won't Start
I have been trying to get my great grandpa's Cub Cadet 100 running. It has been sitting in a shed for at least 10 years. I started by dropping a battery in and made sure it would turn over, which it did. I then cleaned the gas tank, sediment bowl and carb. I then attempted to start it, but it would not fire. No spark. I found out the ignition switch was the problem, so I just twisted the two wires from the ignition switch together. I then had spark, but the engine still would not fire. I tried dumping gas in the cylinder and also starter fluid. When I untwisted the two ignition switch wires, it fired and blew out the carb and air intake.

Does anyone know what the problem could be?
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  #2  
Old 10-16-2013, 09:53 PM
randallc randallc is offline
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have you checked to see if the valves are stuck open?
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  #3  
Old 10-16-2013, 09:58 PM
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austin8214 austin8214 is offline
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Change the oil get a new plug and rebuild the carb and clean the points with some very fine sandpaper. Cleaning the bowl only gets the junk out of bowl. You need to replace the needle and seat and pull all the screws to make sure all the ports in the carb are clean. Also never use ether to try and start your engine. There are no lubricating properties in it. It will damage your engine.
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Old 10-16-2013, 09:59 PM
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If the rod that is inside where the carb attaches is the intake valve then that is not stuck, I just looked at that tonight. Where can I find the exhaust valve? I have taken a point file to the points, but is there supposed to be spark at the points?
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  #5  
Old 10-16-2013, 11:39 PM
J-Mech J-Mech is offline
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Drain and change the oil. Change the spark plug, points, condenser, plug wire. Remove the carb and disassemble and clean it. Drain and flush the fuel tank and replace the fuel line. Make sure that the coil doesn't have corrosion where the plug wire goes in. Time it by the static timing method. THEN, let us know if it won't start.

You can remove the side cover and see the valves move, if you want to.
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  #6  
Old 10-17-2013, 10:32 PM
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Thanks for the help guys. If I get a chance this weekend I will try and work on it for awhile and see what I can come up with.

I will give an update in a few days.
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  #7  
Old 10-20-2013, 12:57 PM
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After fuel system cleanout, points filed, new spark plug and wire it started up after cranking over for a while! Thanks for the replies!
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  #8  
Old 10-20-2013, 06:55 PM
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ACecil ACecil is offline
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Glad you got your cub started!
__________________
Allen
Proud owner of my Original!

My Grandpa's Cart
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  #9  
Old 10-20-2013, 07:59 PM
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Quote:
Originally Posted by ACecil View Post
Glad you got your cub started!
X2!
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