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  #1  
Old 05-11-2015, 06:27 PM
Rob Ach Rob Ach is offline
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Join Date: May 2015
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Default 129 ?

Have a IH 129, the weekly workhorse, that I was using to mow. I ran over a bit of a tree root, a somewhat significant bump, and the engine just died. The engine still turns over but just won't start. Was thinking maybe a safety switch but the switch to engage the blades seems to be working just fine. There is no spark but that might make sense. Any thoughts on how to begin to troubleshoot this? Any general direction would be greatly appreciated. Thanks in advance.

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Old 05-11-2015, 06:39 PM
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Alvy Alvy is offline
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Switch to engage the blades? 129 has mechanical Pto. Do you have a later engine transplant in this? You need positive battery volts to positive side of coil during start and run. Negative side will flash test light during start, doyou have that?
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Old 05-11-2015, 06:44 PM
Rob Ach Rob Ach is offline
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Sorry. The brake pedal that engages a switch behind the gas tank ( won't start without your foot on the brake ) and your absolutely right about the pto for the blades.
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Old 05-11-2015, 06:49 PM
R Bedell R Bedell is offline
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First, welcome to OCC.

Sounds like an electrical issue. Click on this link for the Wiring Diagram..... 129

With the Key in the On position, do you have 12V from engine block ground to the (+) of the Ignition Coil...???
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Old 05-11-2015, 10:06 PM
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Cub Cadet 123 Cub Cadet 123 is offline
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Actually, they do have a pto safety switch on the driver's right side as well as the foot pedal safety switch, but I doubt that it went out. You do need to pull back on the deck engagement handle to enable that safety switch! Have you pulled back on it and tried starting?

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Old 05-12-2015, 12:02 AM
Yosemite Sam Yosemite Sam is offline
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Using your 12V test light attach the clip to ground, turn the key on and touch the pointed end to the pos side of the coil. It should light up. Turn the key and make the engine turn, it (the test light) should stay on.

Clip on ground, touch pointed end to neg side of coil, turn key to make engine turn. Light should go on and off while engine is turning.

If these requirements are not met, your engine will not run and there is no need to look any further.
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Cub Cadet is a premium line of outdoor power equipment, established in 1961 as part of International Harvester. During the 1960s, IH initiated an entirely new line of lawn and garden equipment aimed at the owners rural homes with large yards and private gardens. There were a wide variety of Cub Cadet branded and after-market attachments available; including mowers, blades, snow blowers, front loaders, plows, carts, etc. Cub Cadet advertising at that time harped on their thorough testing by "boys - acknowledged by many as the world's worst destructive force!". Cub Cadets became known for their dependability and rugged construction.

MTD Products, Inc. of Cleveland, Ohio purchased the Cub Cadet brand from International Harvester in 1981. Cub Cadet was held as a wholly owned subsidiary for many years following this acquisition, which allowed them to operate independently. Recently, MTD has taken a more aggressive role and integrated Cub Cadet into its other lines of power equipment.

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