A check up service of the bicycle implies that a bicycle mechanic adjusts, tightens and lubricates all moving parts.
After that, Velorbis advises that you maintain your bike periodically depending on how often and how far you drive. Below is a checklist for future service inspection:
Overview of recommended service review:
1. Inspection, to be performed no later than 2 months from date of purchase, includes the following: Adjustment, tension and lubrication of moving parts.
2. Service inspection that should be done approx. 1-2 times a year, includes the following: Adjustment of steering fittings, crankshaft, gears, front axles, lubrication of exterior moving parts and safety check of tire treads and tire pressure (tire pressure should be 3-4 bar), lights (test of wires or batteries) as well as general safety check of the rest of the bike.