I too just purchased a thirty year old Lambo C653L crawler. My observations so far:
Get to know Google Translate, it's invaluable for deciphering any non-English text in the manuals.
Standard transmission, hand clutch, steering clutches, and brakes are way more complicated to master than a crawler with simple pedal steer and powershift.
Reverse gearing seems to be much higher than forward low, takes me by surprise.
My machine has a 6 way blade, thought that was great, until I realized I only had two hands. (See above for discussion on complexity of controls.)
6 way blade has its own hydraulic system, and the blade and lines are removable. Unfortunately this is the one aspect of the machine that I have no manual for.
Remains to be seen how easy it will be to obtain parts. I know that I likely need to get a new hydraulic filter, since the previous owner never used aux hydraulics.
Still looking for an explanation of how you open the cover to the hydraulic reservoir without removing the tank.
Check the transmission fluid, apparently my machine's previous owner lacked the proper metric allen wrench to do that, I was perilously low on gear oil.
No down pressure on the three point hitch.
PTO output is really close to the drawbar. It may not be possible to utilize some of my PTO driven attachments where it is.
PTO engagement isn't the smoothest in the world, and its hand clutch isn't for the faint of heart.
Diesel engine only wants to start at freezing or above.
Still chuckle that the manual doesn't tell you how to turn the engine off. (Hidden under the dash is a push-to-stop fuel shutoff.)
Horn switch but no horn, or indication one ever existed. (Have been researching what a Lamborghini horn sounds like.)
You better be into yoga, calisthenics, or otherwise limber, as you just about have to crawl into the operator's seat!
Now all that said, so far it's a cool, albeit quirky, machine. :thumbsup: