so i bought this poor old machine and i know absolutley nothing about it . i have no idea on its age or any of its controls its hard to start looking till i know what i i have there seems to be multiple gearbox options as well
so any advice out there
Bit of a difficult one as it's painted industrial yellow, yet there's nothing listed as a '400', or even a '400-J' (The German manufacturing plant is a clue, though). This site may be of assistance. TractorData.com - John Deere tractors sorted by model
Kubota R510 Wheel Loader + Cab and backhoe, JD 6200 Open Station, Cushman 6150, 4x4, ten foot 56 hp Kubota diesel hydraulic wing mower, Steiner 430 Diesel Max, Kawasaki Diesel Mule, JD 4x2 Electric Gator
It is interesting that JD Germany made these construction machines. I only ever thought of Manheim as making Ag tractors.
The good news is that it's probably one of the best tractors ever made. The bad news, is that if it is worn out and had been abused and neglected, you will wish you had never laid eyes on it.
It all depends on what you want to use it for. I have a very tired 400 as well and while it doesn’t do precision work anymore it will do in one pass what takes 6 or 8 passes with my B7510.
If you can get it to running condition with a little effort and not much money you will be able to get lots done and have a little fun doing it.
There are some experts here and on GTT that know a lot about that machine.