I need wiring schematic for a john deere 1984 model 4050

SOURCE: John Deere X324 drains the battery

might have a short in your seloniod switch if you unhook pos from it and there is spark hooking up its probably the short

SOURCE: need owner's and service manuals for John Deere Model 317/

First off, Mowerman's response was incorrect about the age of a JD 317.  They were made from 1979 to 1982.
You can only get manuals either through here:  http://techpubs.deere.com/deere/Default.aspx  or from a dealer.  They're expensive.  You can find them on ebay and also here: http://www.ssbtractor.com/tractor_manual_display.cgi?m=John%20Deere&o=317%20Hydrostatic but I haven't used that site.

SOURCE: have a john deere lawn tractor. Blade will not

Check both belts on deck. Check if the clutch is clicking in. If not it will most likely need a new pto switch.
Sam

SOURCE: Need wiring schematic diagram for JD L130 lawn

You should price a new wiring harness,around $80 so there is not much reason to spend a lot of time trying to find shorts or open wiring.

SOURCE: john deere 4010 wiring schematic,diesel engine

Call me, or email me there are so many options, I would like to know exactly what you need. Solutions are simple, I have worked on AC and DC vurrent all my life and even have some designs on youtube, and have taught seminars for Delco, Leece-Neville/Prestolite, and designs for A/P and Twin Roter. [email protected]