Some Wings are ridden only a few times a year and don’t get regular service. Check the condition of the brake and clutch fluid, and look for signs of leaking fork seals. Try every function of the stereo, intercom, and navigation system, since problems with these can be hard to diagnose and expensive to repair. Also function-check the rear-shock preload adjuster, ABS, auxiliary lighting, and any other optional feature. Heavily modified models deserve extremely close inspection.