Yamaha Zuma 50

Engine: Minarelli Vertical 50 Air Cooled

Rollers 15 x 12 – Main Jet: Gurtner type / Dellorto 6mm (Varies on year model)

Factory restrictions: CDI RPM restriction, variator washer

Tyres: 120/90-10

Common faults: Oil pump leak, weak engine casing casting – prone to cracking under stress