1. Owner’s manual:
Every seller gives buyers a user manual that gives instructions about taking care of their Tractors. So, the owners follow those tips. 

2. Maintenance tools:
Make sure you buy wrench and all other tools you need to take care of your tractor.

3. Check fluids:
Check the 
a. Engine oil,
b. Coolant,
c. Battery electrolyte,
d. Transmission fluid, and 
e. The hydraulic oil.