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  #1  
Old 07-31-2022, 02:49 PM
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Rmowl Rmowl is offline
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Default 1863 not starting

Picked up a nice 1863 couple weeks ago. It started and ran fine. Mowed couple times with it, noticed a loss of power then it would pick back up, like a dirty fuel system/carburetor. Replaced spark plugs, air filter, fuel filter, changed oil and filter. Cleaned out carb bowl, blew out the passages. Ran great. Tried just today and engine decreased in power. Limped back to the garage and took carb off, didn’t appear dirty inside. Put back on and now it will just crank and no start. Has 840 hrs. I just assumed it’s a fuel issue, but just guessing, don’t have any experience with the command engines. Not sure where to go from here, thanks for any help
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Cub lo-boy 154
IH 782
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Old 07-31-2022, 04:51 PM
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Did you re-attach the lead for the fuel solenoid ?
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1979 IH Cub Cadet 782 w/CH20, dual hydraulics, power steering and Cat 0 three point
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Old 07-31-2022, 05:24 PM
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Pretty sure that has the shut off valve's on the gas tank. They get plugged up with crud.
Might also be the fuel line failing and not allowing sufficient flow?
I think most guys replace the valve's and the grommets and all the fuel line.
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Old 07-31-2022, 06:45 PM
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Yes, reattached fuel solenoid wire. I can’t confirm if the fuel lines and shutoff valve are bad or not, but I am getting plenty of fuel. What am not getting now is spark. I cleaned the terminal at the ignition and no change. It would crank and then at another turn of the key do nothing like a bad ground. Also the machine is an 1863 not a 64. Was a one owner with all original receipts, manuals.
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Cub lo-boy 154
IH 782
IH 126
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Old 08-01-2022, 03:53 AM
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I'm pretty sure the fuel solenoid gets power from one source in run and another in start. Verify that the solenoid is getting power in run and start key positions.
Cannon
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Old 08-02-2022, 07:32 PM
rwairforce rwairforce is offline
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No spark, you might want to check the coils. I have a Kohler Command 18hp that acted the same and i found intermittent spark using a spark tester between the plug wire and plug. I changed out both coil packs and it fixed it. I contemplated off brand but ended up spending the $100 for OEM Kohler. At least thats what they stated.
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Cubs: 71, 72, 127, 149, 1440, 2186 and 1864
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Old 08-04-2022, 06:24 PM
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I confirmed I’m getting power in start and run. Next I went to coils. Yanked out engine, cleaned it up, waiting on the coils now. The valve grommets disintegrated on both sides of the fuel tank just touching them so replacing both of those and all fuel line. While engine out doing both crank seals. So hopefully once it’s all back together this will solve my issue.
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Cub lo-boy 154
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IH 126
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Old 08-05-2022, 09:32 PM
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Might as well replace the head gaskets while it is out. If they have not been changed you will be going that next.
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Old 08-14-2022, 06:14 PM
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Got it up and running. Runs great and smooth. Replaced both ignition coils, fuel tank grommets, valves and fuel line, crankshaft seals, head gaskets and carburetor. Looks and feels like a new machine
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Cub lo-boy 154
IH 782
IH 126
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