A start-up sequence you can do
Look for a cold start without throttle games, a stable idle, and a hot restart after a short ride. Watch the temperature behavior. Smell the exhaust for coolant and look at the oil for metal or milky residue.
Check that the charging voltage rises appropriately once it is running, if you have a meter and a safe way to measure at the battery. A bike that arrived on a tender may still have a dead charging system.
Bodywork hides the expensive parts
Fairings off is where sportbike truth lives: rubbed harnesses, oil at the valve cover, exhaust leaks, and previous crash repairs. A clean paint job does not speak to the stator connector or the subframe.
Modified bikes need a parts list. Unknown fuel controllers and cut wiring are reasons to slow down, not souvenirs.
What a shop inspection adds
We can compression-test, leak-down if the numbers justify it, and trace charging or no-start complaints that a parking-lot demo will not show. Maintenance catch-up, fluids, chain, and brakes are separate from internal engine work.
We do not install tires or forks, so a purchase inspection will not include mounting a new tire. Tell us the year, make, and model and what the seller claimed was just done.