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Wisconsin engine Kurz and Root portable welder USACE

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Old 09-17-2019, 07:14:44 PM
Mike R. Mike R. is offline
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Question Wisconsin engine Kurz and Root portable welder USACE

Hi all! First post here. I have a 1965 Kurz and Root portable welder, powered by an air cooled single cylinder Wisconsin engine that I'd like to get back into working condition. It was made for the Army Corps of Engineers. It has spark and turns over, but I don't want to start it until I get some clean oil and gas into it. It only has 36 running hours showing, and it's been stored in a Conex for 30 years. It appears to be in pretty good shape for its age.
I am looking for any documentation, manual(s), parts lists, spec sheets, anything! that might help me out along the way. The serial number and manuals links in this subsection are not working for me (incomplete application request error) so if there's another way, I'd love to know about it.
Thanks in advance for any info you can provide.

I'd also like an idea of what this machine might be worth once I get it running.

Model E1690M1089
Serial 60-1519N97

Generator Set electric gasoline engine

Engine Manufacturer Wisconsin Motor Corp.
Serial 3736711
Date of Manufacture 1-65
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Old 09-17-2019, 07:30:48 PM
I like oldstuff I like oldstuff is offline
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Default Re: Wisconsin engine Kurz and Root portable welder USACE

Step 1 is to take the engine off the oil pan and clean out the gunk. If it has an oil pump, replace the check valve ball if it's not perfect. Fill the dip tray if it has one before you run it.
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Old 09-17-2019, 07:56:27 PM
K-Tron K-Tron is online now
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Default Re: Wisconsin engine Kurz and Root portable welder USACE

Mike, Welcome to smokstak, The Wisconsin MAENLD is a militiary spec. radio shielded version of the civilian model AENLD. The military engines were rated at a significantly lower horsepower rating than the civilian engines. They are not an inferior engine, the military just has their own way of rating equipment, which I believe is continuous duty hp not intermittent. So an MAENLD is typically rated between 5.25 and 6.40hp depending on rpm specified. Civilian models were 9.2hp. You need to pull the oil pan off of your engine and clean out decades of old sludge from the oil pump, and pan. The oil pump in these engines is a piston style with little ball bearings inside. If the ball bearings get gummed up the pump will not work and you will quickly destroy your engine. It is a good time to clean the oil pump screen as well. When you unbolt the pump from the block, sit it in a tub of gasoline. You only need about 1/2 inch of fuel level to see the pump work. Operate the pump with a screwdriver. It should spray fuel steadily. Once this has been proven, you can reassemble the engine. Likely the points in the magneto need a good cleaning from sitting so long. With the radio shielded setup I find it easier to disconnect the plug wire at the sparkplug and remove the wire and magneto cap as one piece. These use an aviation style plug like the XMD-21. They are gapped the same as a conventional sparkplug. The carburetor should be a pretty standard Zenith, so parts should not be terribly difficult to find for it. I am not familiar with the welding/generating end on your unit. It would be wise to remove the brushes from their brush holders before attempting to run the engine. The slip rings will likely need to be cleaned. Before hooking up the brushes check for any rodent damaged wires. It is better to be safe than sorry. Good luck, and hopefully we get to see some pictures,

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Old 09-17-2019, 08:23:00 PM
Mike R. Mike R. is offline
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Default Re: Wisconsin engine Kurz and Root portable welder USACE

Thanks for your quick responses. It's good to have a first step, and I will take pictures along the way.

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