Here you can find instructions for self-repair of Italian motorcycles "Aprilia RS125" of the third generation, which were produced from 1999 to 2005.
This is a small-capacity motorcycle with a single-cylinder, two-stroke, 125 cm³ water-cooled engine. The gearbox is six-speed, the clutch is wet, multi-plate, and torque is transmitted to the rear wheel via a chain.