These are not modern engines designed to run at 192-208F. The thermostat should be 160F. A very low pressure radiator cap, and unless there is an aftermarket overflow tank, leave 2" of clear space at the top of the radiator for expansion. If you fill it full, it will just dump out 1-2" of coolant each time it's up to temp.
Ethelyn glycol can be added to protect from freezing, but it will not increase the cooling capacity of the water. Temps over 190F should be avoided, and also, cool down after a hot use is a good idea to keep from warping a 60 year old head. Let it idle for a bit after a hard work and let the temps get back down to 160 or so before shutting it off. I usually close the fuel petcock once I'm done, and let the fuel in the line and float empty out for about 2 min, then turn off the key.
The 8x1 tractors are a great strong old beast. My only complait is that few were ordered with power steering. I have a 961 and the power steering makes life on the tractor much nicer.
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Today's Featured Article - Sunday Drives - by Cowboy. Summer was finally upon us here in Northern Maine. We have two types of industry up here, one being "Forestry" (Wood Products) and the other "Farming" (Potatoes). There is no shortage of farm tractors and equipment around here! I have been restoring old Farm Tractors for the past 6 years, and have found it easier and less expensive to hit all the auctions and purchase whole tractors for parts needed. My wife who works at a local school, and only has weekends and summers off, while on t
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