Owner's Manual-30-Tires pressure: The correct tires pressure is very important for yoursecurity conditions.Never review the tires pressure and re-inflate if necessaryonly while the tire is still warm, wait for cooling down.Assembly and replacement of the tires: it’s recomended to replace thetires by a profesional staff with a proper machine and adecuate experienceto actuate correctly.The tires are the conection between the bike and the road. In any case thesecurity conditions are pending on a small contact area. Due to that it’s veryimportant to keep the tires in a good conditions and replace them whennecesary by the original recommended by GAS GAS.Setting of the chain tension and wheel.Connection chain link orientationPressure and status of the tires.The chain connection link must be placed with the opening aginst thenormal chain movement when bike goes forward.On the rear wheel axis there are the tensioners for making easier totension the chain and centre the wheel.