Others have brought up some good points. Today's 40 horse tractor is not the same animal as it was 50 years ago. A 40 hp now is not really made to be a farm tractor, not many folks who buy a new boomer now are planning on make'n their live'n on it, it's a play pretty most of the time. Hour wise, I think many will last longer. Most of the gassers from 50 years ago you had to figure on a rebuild after 4 or 5k hours, now many are not broke in good till over that. If some one were to buy a tractor now and put 100 hours a year on it, it very well could be running in 50 years I just don't think it will be totaly original. With the way technology is changing, the state of the art high tech gizmos on todays tractors will change from year to year and will not be servicable in 10 years. All the tractors and equipment I have been around made the last 15 years, the electronics are the weak spot. I used to work for Tyson running a Lewis-Mola poultry harvester. They were powered by 70 some odd horse Kubotas turning a big hydrolic system. The engines were tougher than any engine that size I have ever been around on the farm, they took abuse that would kill most any tractor engine. (Try running a 30 year old tractor all day every day for a week in a chicken house with out an air filter in it and see how far you get) One main problem with was the hydrolic solenoids that ran every thing, they were a constant change out and throw away part and after 4 years they were getting hard to find cause they were out dated. Tractors will be the same way, alot of the do-dads will get yanked off and re-engineered to work around electronics and safty switches that cause problems.
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Today's Featured Article - Earthmaster Project Progress Just a little update on my Earthmaster......it's back from the dead! I pulled the head, and soaked the stuck valves with mystery oil overnight, re-installed the head, and bingo, the compression returned. But alas, my carb foiled me again, it would fire a second then flood out. After numerous dead ends for a replacement carb, I went to work fixing mine.I soldered new floats on the float arm, they came from an old motorcycle carb, replaced the packing on the throttle shaft with o-rings, cut new ga
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