I had a small coolant leak around this fitting so I had to pull the engine out again to repair it. I cleaned it up, painted it and installed new clamps. Hopefully that will solve the issue.
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I ordered 25' of 3/8 brake tubing off of Scamazon for $20 and also some 3/8 JIC tube nuts & tube sleeves from DiscountHydraulicHose.com. I watched a few YouTube Vids on tube bending and made these up. These aren't perfect but I think they'll work good enough for a plow tractor.
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I then got the engine put back in, wired up and installed the clicky starter relay only to find out my 15 year old China gear reduction starter has failed. It shorted out and burned up my new relay.

So I ordered a new China GR starter and hope to get it installed soon.