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Go Back   Only Cub Cadets > Cub Cadets > CCC/MTD Cub Cadet built Tractors (GT)

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  #1  
Old 07-15-2024, 01:55 PM
TTCAguy TTCAguy is offline
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Join Date: Jul 2024
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Default GT3100 just stopped running

I left it outside running to go and get the grease gun when I'm assuming it ran out of gas ( light was on for a while ).
I filled it with gas ( just bought it ) and it wouldn't start. Thought maybe since it had run empty it just needed a little boost. Poured a tiny bit down the carb but nothing -- Cranked and cranked but didn't even try to start.
I could see fuel pumping into the throttle body -- fuel not the issue so I checked for spark -- nothing on either plug .
What would cause both plugs to have no spark and the engine had no signs of any issues before hand ?

I'm stumped -- thanks in advance
PW
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Old 07-16-2024, 09:01 AM
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Oak Oak is offline
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Here is the wiring diagram I got off of the web. I wonder if your mag kill wire is grounding somewhere. I would check the wiring on the brake switch or if you can unplug the kill wire going to the mag and see if you get spark. I'd pull the plugs to check the spark because you may not be able to kill it when it starts if that is the issue.

Here is a link to the schematic also.
https://pandpsmallengines.com/pages/...wire-schematic

GT3100 schematic.jpg
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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.

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