Electrical: battery charge and liquid condition, fuses, cables, tightness
Mechanics: Fold in/out of side and main stand, the gimbal makes noise
Suspension: Struts leaking? Normal springing in and out?
Wheels: Is there a game when the wheels wobble sideways? Does the rear wheel swing game?
Steering stop: In both directions the same and without rest points when steering and relieved front wheel?
Key: Check all keys for functionality (don't forget the handlebar lock)
Exhaust gases: Should neither blue (oil is burned) nor white (cooling liquid is burned)
Before the test drive, check the engine for heat. If the engine is warm, the machine was probably deliberately warmed by the seller. In this case, ask the seller for the reason - the vehicle may have problems in cold operation. In case of doubt, wait an hour and only then start a test drive.
Brakes: braking effect, required braking force, pressure point, ABS test, fading, full braking (!)
Suspension: Straight exit, pulls the machine to the left or right, behavior in curves
Gearbox: Gear change (noise), find idle, clutch force, does the clutch slip through?
Cockpit: Do speedometers, rev counters, indicator lights, kilometer and day-kilometre meters work?