TECHNICAL FEATURES

ENGINE: 4 stroke twin; cylinders placed in V lengthwise, included angle 90 deg. single overhead camshaft driven by bevel gears and shafts, valves incl. angle 80 deg. intake valve dia 40 mm ex. 36 mm

BORE AND STROKE: mm 80 x 74.4 = 748 cmc

COMPRESSION: 8.5:1

VALVE DIAGRAM: intake opens 62° BTDC closes 84 ABDC exhaust opens 80° BBDC closes 50° ATDC. Normal valve free play cold: intake 0.05 mm exhaust 0.10 mm

IGNITION: alternator, battery and HT coil, fixed advance 7° max total 35° distance between points 0.3-0.4 mm Plug type marelli CW 260 N

LUBRICATION: forced, with gear pump; oil sump capacity 4.5 litres (summer SAE40, winter SAE 30)

FUEL SUPPLY: by gravity, 98/100 octane petrol fuel, tank capacity 17 litres of which 2 are reserve

CARBURETORS: Amal "concentric" 930, bore diametre 30 mm, max jet 190, idle jet 25, atomizer 106, filters with paper cartidges

GEARBOX: in-block 5 gears operated by single lever on the right, internal ratios 2.236, 1.562, 1.000, 0.887

PRIMARY DRIVE: gears, primary gears ratio 1:2.44 (teeth 29/71)

FINAL DRIVE: chain, sprocket chainwheel ratio 1:2.25 (teeth 16/34), chain size 5/8 x 3/8 Renold

FRAME: steel open double cradle

SUSPENSIONS: tele hydraulic front fork (220 cmc ROtra ATF oil), rear swingarm with hydraulic shock absorbers with co-axial springs

RIMS AND TYRES: front WM 19/2 light alloy, rear WM 18/3 light alloy; tyres Dunlop K81 front 3.60/19 rear 4.10/18. Inflating pressure 1.9/2.1 bar (solo) 2.2/2.4 bar (pillion)

BRAKES: front disk, dia 280 mm, hydraulic actioning, rear drum, double cam dia 200 mm

ELECTRICS: alternator 150 W 12 V, battery Yuasa 12 N12AA4 - 12 V - 12 Ah, lamps: front headlight twin filament 12 V 40-45 W, park 12 V - 3 W, rear light twin filament 12 V 5-21 W

DIMENSIONS: overall length 225 cm, wheelbase 150 cm, handlebars width 76 cm, max height 108 cm, handlebars height 108 cm, saddle height 80 cm, min ground clearance 18 cm, dry weight 185 kg