Back compression springs Naraku [Set 3] - Minarelli, CPI Gegendruckfedernset Naraku consisting of three springs. When using the torque spring, the Verschaltdrehzahl variator moves in blue pen from + 1000U / min, with yellow at + 1500U / min and red spring 2000 of U / min. (roller weights unchanged) The counter pressure spring has to compress the object, the pulley in the rear converter for the drive belt. On the other hand, it makes the variator back pressure toVerschalten. A change is necessary as soon as possible since a tuning measure increases the performance. Notable slipping fan belt or not churning motors. The torque spring is always in close connection with the variator. If another spring is fitted, the Vario must be tailored to each individual case.