When enough rpm‘s are reached, centrifugal force moves clutch plates apart to mesh with the clutch basket which in turn transfers power to the gear box.
HEBO‘s „Race Clutch N“ turns spring preload adjustment into a cakewalk. Save yourself a lot of aggro, time and nerves for the more pleasant things in life, like road time. Reinforced high quality linings, 3 brake shoes, adjustable spring pre-load, lightweight.
A word of advice for MINARELLI motor owners: all models of MINARELLI motors have a variety of clutch and clutch baskets built into them. The problems start when you don‘t know which motor is built into your vehicle and from buying imports that appear on the gray zone markets. One was to help, is try to find out which year your motor was manufactured.
There are two types ->
[Clutch with two shoes, clutch basket inner diameter 105 mm.] According to MALOSSI and POLINI, this clutch was used up till 1995, other sources say 1997.
[Clutch with three shoes, clutch basket inner diameter 107 mm.] According to MALOSSI and POLINI, this clutch was built from 1996 on, other sources say 1998.
If you want to be 100% sure, measure the old clutch basket!
SIP TIP! New clutch nuts, clutch positioning tools. quick cleanser.
MOTORETTA May/June 2002: „A 3 shoe clutch for almost all 50 cc scooters....very easy adjustment....“