ENGINE: inclined single cylinder, light alloy cylinder head, cast iron cylinder liner, OHV vertical distribution controlled by pushrods and rockers. Intake valve 17.7 mm. in diameter - 16.2 mm exhaust valves in diameter. Bore and stroke: 41x 37 = 48.82 cc. Compression: 7,1:1. Motor power: 1.164 to 4600 g/m. Distribution diagram with tolerance between valves and rockers mm. 0,15: Intake opens 20° before TDC and closes 60° after BDC, exhaust opens 20° before BDC and closes 60° ATDC. Tolerance of regulation between valves and rockers mm. 0,05 inlet is that the discharge a cold engine exhaust.

IGNITION: Flywheel magnet alternator 6V - 18W AT external coil, 33 ° -35 ° in advance before TDC, the distance between the platinum contacts 0.40 mm., spark plug Bosch W 240 T2 (W4C current name), distance between electrodes 0,6 mm.

LUBRICATION: piston pump with oil in the crankcase sump, capacity kg. 0.800, SAE 10W/40 or 20W/50 oil density (SF or SG) multigrade in summer and winter, in the base mesh filter, oil change and filter cleaning every 3000 km.

POWER: gasoline, tank capacity 7.5 liters 0.5 liters in reserve.

CARBURETOR: Dell'Orto UA 15 BS, diffuser 15 mm., nozzle 260/G, jet max. 65, jet min. 35, gas valve n. 65 jet needle DB attached to the 2 nd notch, air filter Dell'Orto F8/9, or Dell'Orto SH 14-12-2

CLUTCH: 3 discs in oil bath.

GEAR: block 4-speed, commanded the left foot. Reports of transmission: 3,45 in 1°; 2,26 in 2°; 1,72 in 3°; 1,33 in 4°.

DRIVE: primary helical gears, ratio 3.61 (teeth 19 to 65); secondary chain on the left side, 2.69 ratio (output pinion gear 13 teeth, 35 teeth crown wheel drive). Rapporti totali 33,5 in 1°, 21,94 in 2°, 16,70 in 3°, 12,91 in 4°.

CHASSIS: girder upper tubular twin cradle.

SHOCK ABSORBERS: Front telescopic fork, rear swing arm swinging with telescopic shock absorbers.

WHEELS AND TYRES: 18x1,35 steel wheels, 35 front. and post.; 2.25 front tires and post. 1.7 front tire pressures and 1.8 post.

BRAKES: Central drum brakes alloy 105x20 mm. ant. and post.

ELECTRICAL SYSTEM: powered flywheel magneto alternator 6V - 18W. low-beam headlight 6V-15W light fitting position 6V - 5W. Tail light bulb 6V-3W

SIZE AND WEIGHT: length m. 1.80, m wheelbase 1.19, handlebar width m. 0.50, handlebar height m. 0.03, max. m. 0.85, seat height m. 0.70, height footrests m. 0.27, ground clearance m. 0.16, weight kg. 57.

PERFORMANCE: (CUNA standards): max. 40 km / h. Consumption 2 liters per 100 km.

MAINTENANCE: The house requires to carry out the coupons every 3,000 km. What to do with this frequency are replacing engine oil (with filter gauze for cleaning), control (with possible adjustment) valve clearance, the recording of the opening of the contacts of the switch (the wetting of feltre cam with a little oil or fat when making such an intervention), ignition control, cleaning the fuel filter, greasing of the bushings of the swing arm pivot and control the regulation and operation of various commands. The tension of the chain of transmission (which at that time must also be thoroughly lubricated) should be checked every 500 miles. The adjustment of the steering head bearings, control of the spark and the condition of wheels and brake friction linings must be made every 6,000 km. Spark plugs should be replaced every 12,000 km.