Service Log
Kei trucks don't come with service history, and most owners end up keeping one in a notebook. Keep it here instead — log what you've done, see what's coming due, and get to the right part numbers without looking anything up twice.
Why this is worth doing
A documented history is the difference between “runs good” and a truck that sells itself. It also stops the most common kei ownership mistake: losing track of the timing belt on an engine where the belt is the whole ballgame. If you're not sure what your truck needs, start with the chassis decoder to confirm what you have, then the parts lookup for the numbers.