engine: single cylinder, air cooled 2-stroke

barrel: 5 transfer ports

induction: disc valve

bore: 55 mm

stroke: 52 mm

cubic capacity: 123 cc

compression ratio: 11.3: 1

bhp at rpm: 12.07 @6700rpm

lubrication: 2%-autolube

transmission: 4 speed constant mesh

• 1st gear: 16.43: 1
• 2nd gear: 10.98: 1
• 3rd gear: 7.60: 1
• 4th gear: 5.83: 1

clutch: wet - multiplate

carburetor: Dell'Orto SI 24/24 G

venturi size: 24 mm

main jet: 110/100

slow running jet w/air hole: 100/100

slow running jet w/out air hole: 50/100

throttle SLIDE: 8492.05

mixer tube: BE 4

main jet calibrator: 120/100

starter jet: 60/100

ignition: electronic

ignition timing: 16 deg. BTDC

voltage: 12 volt

wheels: 10"

wheel hubs: cast

tYres: 3.50 x10

tYre pressure (front): 18 psi

tYre pressure (rear solo): 26 psi

tYre pressure (rear w/passenger): 36 psi

dry weight: 247 lbs

SPARK PLUG: NGK B7-8 ES