I don't know about this particular manual but I tried a cheap online download several years ago for my 9560 combine and was not very satisfied. I ended up downloading the diagnostic and test technical manual from Deere (not cheap but several hours with the dealership mechanic in your driveway using this same manual to work on your machine isn't cheap either). It is very thorough and takes you through step by step testing procedures to identify problems - 10,000 pages but a very good table of contents that allows you to jump to the section you need. Your 4420 will not be nearly as complicated as it is pre everything electronic. I've spent several hours in mine this week because after I washed my combine up at the end of harvest, it now refuses to start. Have narrowed it down to a circuit board that had gotten dusty and then wet - bad seal on the central control unit box. GRRRR
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Today's Featured Article - Ford Part Number Trivia - by Forum Participants. "Replaced by" means the part was superseded. All of my part books date back to 1964 and New Holland have changed some part numbers. They usually put the old Ford part number on the package. I was suppressed when I looked up the part number of the auxiliary drive shaft because for some reason the part number went through a radical change and it lost its "Basic Part Number". Ford part numbers follow the following rules. Most part numbers are in three parts. The middle part is called the
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