it dosnt really matter, as it most likely is both. when the engine gets pulled down for o/h im sure you will take it in for a valve job. you will be notifyed about guides, seats, valves,and possible head shave,and head will be checked for cracks.then you will have a heart attact when he tellls you that will take care of a 500.00 bill or more.but yes it is a good idea to give it a good work out in the field, could smarten it up some if its just been idling around the yard not reaching operating temp.
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Today's Featured Article - Experimental Tractors Article - by Danny Bowes (Dsl). Tractor technology appears to have nearly hit it's pinnacle of development. If you agreed with the subtitle, you are rather mistaken. Quite, actually. As a matter of fact, some of the technology experimented with over 40 years ago makes today's tractor technology seem absolutely stale by comparison. Experimentation, from the most complex assembly to the most simple and mundane component, is as an integral a part of any farm tractor's development
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