Farmers jailbreaking John Deere tractors to repair them - video

[NortonDommi]

I think that ALL manufactures should be forced to upload ALL workshop manuals to the interweb. Too often dealers retain workshop manuals that should be included with machinery, often they will refuse to identify their suppliers when an issue arises that they are not prepared to address or when they have switched to another supplier leaving previous customers with no recourse to information/parts. Many dealers of all kinds of machinery will also refuse to even order workshop manuals/parts manuals or they will demand exorbitant prices for such items.
Some manufactures even prosecute anyone who uploads manuals for their product. This can be avoided if you are aware before purchase but is still of no use to small repair services without factory affiliation.

[Frank S]

Then you will find guys like me and my neighbor who will eventually figure out a work around to rip all of the garbage out of vehicles and equipment that is totally unnecessary to make an engine run A gasoline engine requires a fuel/air mixture, compression, spark, and exhaust, the engine itself does not care how it gets these things as long as it gets them. A diesel engine needs it just a little differently the air is compressed fuel is injected under pressure at the appropriate time to cause combustion and exhaust. I know where there are 50-year-old engines still running that will pass almost all emissions standards in California of all places providing you can feed them with the correct quality fuel and do so with a 15 to 20% better efficiency than an engine of today's manufacture with all of the emission controls in place