I am quite serious, Piotr. :-)
OK, how about a can of FlatFix and a tow rope about 6 - 8 meters long.
If the machine is in good enough condition to consider for the trip chances are you will always be able to make it into the next town.
IF you would like me to say purchase an inexpensive set of end wrenches, a small socket set, screw drivers, and a few pliers, tire bars, adjustable wrenches, carry spare oil, coolant, fuel, inner tube, tire, fuses, spare wire and electrical tape, filters, air cleaner...
Gosh, where would the list end ?
If you have a mechanical episode along the way, I'm sure you will be able to buy the tools necessary.
Seems to be a heavily populated area of the continent ! Doesn't it ?
redk