AC kept punching and pushing that little engine until, with that last 160 cu in version, they claimed as much or more HP as the old low compression, slow turning 226 in the WD45. Well maybe, but at a cost. That 160 is the only engine I recall having a pre-ignition/knocking problem. If the timing and/or fuel wasn't just right, that knocking would lead to problems. I don't want to be an alarmist. And certainly some time spent checking peripherals is wise. But don't be surprised if you end up pulling the head. Hopefully cleaned surfaces, a new gasket, and maybe some new, better capscrews with a little extra torque is all that is needed. It is easy to work on.
I have a D15II with an AC side mounted mower which is my edge/ditch trimming machine. No engine problems, but it does pop out of third.
I still recall when my cousin [20 years my senior] bought a brand new D15II. What a sweet little tractor. He worked it hard for several years. After he traded it off the casual use home owner had problems with it. The knocking had chiseled a little groove right at the head gasket surface between a couple of cylinders!
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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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