I have an 87 JD-850 with preheat feature. I just turn the key left for 15-30 seconds and start normally. Rarely use the feature unless it is really cold, which in Texas is below freezing. Starts easy every time with using the preheat feature. I do not have the decompression feature on my tractor. The tractor is almost 30 yrs old and the only maintenance issues is replacing the battery at 17 yrs and replace a fused link to the starter at 18 yrs. If you don't abuse the two stage clutch and changed all the filters and fluids on schedule it will be bullet proof. Just wish mine had some remotes. JD no longer stocks the conversion kits and I haven't been able to find a kit for mine. Good luck.
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Today's Featured Article - Third Brush Generators - by Chris Pratt. While I love straightening sheet metal, cleaning, and painting old tractors, I use every excuse to avoid working on the on the electrics. I find the whole process sheer mystery. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. They all seem to start with a chapter entitled "Theory of Electricity". After a few paragraphs I usually close the book and go back to banging out dents. A good friend and I were recently discussing our tractor electrical systems when he stated "I figure it all comes back to applying Ohms Law". At this point
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