| ENGINE |
| Bore | 88 mm |
| Stroke | 61.5 mm |
| Capacity | 748 cc |
| Compression ratio | 10:1 |
| Maximum power (crankshaft) | 72.5 HP at 7,900 rpm |
| Maximum torque (crankshaft) | 5 Nm at 6,350 rpm |
| Italian fiscal rating | 10HP |
| Maximum engine speed | 10,000 rpm |
|
| VALVE TIMING |
| DESMODROMIC valve timing, two valve head each cylinder controlled by four rocker arms (two opening and two closing rocker arms) and by four lobes OHC. It is controlled by the crankshaft through cylindrical gears, pulleys and toothed b
elts. The valve opening and closing diagram is the following (checking data with a clearance of 0.20 mm): |
| Inlet valve: | 41 mm diameter |
| Opens before TDC | 31 degrees |
| Closes after BDC | 88 degrees |
| Exhaust valve: | 35 mm diameter |
| Opens before BDC | 72 degrees |
| Closes after TDC | 46 degrees |
| Valve tappet clearance (cold engine): |
| Opening rocker arm | 0.10 mm |
| Closing rocker arm | 0.00 - 0.02 mm |
|
| FUEL SYSTEM |
| By electric pump and filter with interchangeable cartridge. Air take-off with dry filter, placed under the fuel tank. The fuel system is so made: |
| Provided with a two-barrel carburetor: WEBER 44DCNF 107 |
| Main data: |
| Atomizer | 36 mm |
| Auxiliary venturi | 350 |
| Main jet | 150 |
| Air corrector jet | 170 |
| Idle jet | 57 |
| Idle air jet | 130 |
| Pump jet | 35 |
| Starting jet | F7/110 |
| Needle valve | 300 |
| Mechanical float level | 46 mm |
| Float weight | 14 gr |
|
| LUBRICATION |
| Forced-feed gear pump, oil filtering through gauze strainer on drain plug, centrifugal depurator on the crankshaft, filter cartridge and low pressure w/l on the instrument panel, radiators for oil cooling before oil feeding to heads |
|
| COOLING SYSTEM |
| Air cooling through the large fin surfaces of cylinders-heads. Engine oil cooling through radiator. |
|
| IGNITION SYSTEM |
| Electronic type with inductive discharge system |
| Make | KOKUSAN |
| Automatic advance: |
| -- up to 1700 rpm +/- 200 | 6 degrees |
| -- 1700 to 2600rpm +/- 300 | progressive up to 32 degrees |
| Checking through stroboscopic light |
| Spark plugs |
| Make | CHAMPION RA6YC |
| Electrode gap | 0.6 mm |
|
| TRANSMISSION |
| Dry clutch type controlled by lever on L/H side of handlebar. Power drive by straight tooth gear set from engine to gearbox main shaft |
| Ratio | 36/71 = 1/0.507 |
| Five speed with constant-mesh gearbox inside the engine, gear shift pedal on L/H side of the bike |
| Gear ratios |
| 1st speed | 16/40 = 1/0.400 |
| 2nd speed | 21/36 = 1/0.583 |
| 3rd speed | 24/32 = 1/0.750 |
| 4th speed | 27/29 = 1/0.931 |
| 5th speed | 29/28 = 1/1.035 |
| Transmission between gearbox and rear wheel through chain |
| Make | REGINA |
| Type | DA-OR 136 up to serial number 750130 |
| Type | DA-OR 135 from serial number 750131 |
| Dimensions | 3/8" x 5/8" (136-OR) |
| or | 1/4" x 5/8" (135-OR) |
| Final drive ratio | 15/38 = 1/0.394
|
|
| BRAKES |
| Front |
| Twin drilled disc in cast iron |
| Disc diameter | 280 mm |
| Hydraulic lever control on the R/H side of handlebar |
| Swept area | 80 square cm |
| Brake calipers: |
| Make | BREMBO |
| Type | P2FO8N |
| Rear |
| Fixed and drilled disc in cast iron |
| Disc diameter | 270 mm |
| Hydraulic pedal control on the R/H side of the bike |
| Swept area | 37.6 square cm |
| Brake caliper: |
| Make | BREMBO |
| Type | P2IO8N |
|
| FRAME |
| Perimetral decomposable double cradle type in square and rectangular section tubes made of normalized 25 Cr-Mo 4 steel |
|
| SUSPENSIONS |
| Front |
| Oil-dynamic fork provided with external adjusting system of the extension brake |
| Make | MARZOCCHI |
| Type | M1R |
| Leg diameter | 41.7 mm |
| Stroke | 140 mm |
| Rear |
| Swinging fork with oil-dynamic adjustable mono shock "SOFT DAMP" |
| Make | OHLINS |
| Type | CA 508 |
| or |
| Make | MARZOCCHI |
| Type | SUPERMONO |
| Wheel stroke | 136 mm |
| The swing are is made of light alloy; its action is progressive and realized by con rods and rocker armsl articulations turn on ball and pin bearings. The swing fork is pivoting around fulcrum pin passing through the crankcase; this s
ystem makes the motorcycle more sturdy |
|
| WHEELS |
| Light-alloy wheel rims with six delta shaped spokes |
| Front |
| Make | OSCAM |
| Dimensions | 3.75 x 16" |
| Rear |
| Make | OSCAM |
| Make | OSCAM |
| Dimensions | 5.oo x 16" |
| Wheels are of removable-spindle type. The rear wheel is fitted a special flexible coupling, to remove the wheel first take out the chain |
|
| TYRES |
| Front |
| Radial "tubeless" type |
| Make | PIRELLI |
| Type | MP7S |
| or |
| Make | MICHELIN |
| Type | A59PLTL |
| Rear |
| Radial "tubeless" type |
| Make | PIRELLI |
| Type | MP7S |
| or |
| Make | MICHELIN |
| Type | M59PLTL |
| For motorcycles having serial numbers 750001 to 750499 it is suggested to use MICHELIN tyres only |
| Tyre inflation pressure |
| Inflation pressure | Bar |
| Front | 2.3 |
| Rear | 2.6 |
|
| ELECTRIC SYSTEM |
| Main components: |
| Headlamp: rectangular shape, iodine, double-filament, 12V-55/60W-H4 bulb, with parking light bulb 12V-3W |
| Instrument cluster |
| Electrical controls on handlebar |
| Direction indicators: 12V-21W bulbs |
| Horn |
| Stop light switches |
| Battery: 12V-14 Ah |
| Alternator: 300w |
| Electronic regulator |
| Start motor: 0.7kW |
| Rear lights: 12V-21W bulb for stop light, 12V-5W bulb for tail and number plate lights |
|
| FUSE BOX |
| Used fuses are accessible by removing the protective transparent cover |
| Only three fuses are connected to the electric system |
| F1-F2: 15 A |
| F3: 7.5 A |
| (F4-F5): Spare fuses |
|
| PERFORMANCE DATA |
| Maximum speed mph | 130.49 |
|
| WEIGHTS |
| Dry | 429.89 LB |
| Kerb | 485.01 LB |
| With pilot only | 639.33 LB |
| REFUELINGS | TYPE and QUANTITY |
| Fuel tank, 4 litres reserve included | Petrol NO 94-96 RM: 22 litres |
| Crankcase sump and filter | AGIP SINT 2000-SAE10 W/40 or CASTROL GTX2 turbo-tested SAE20 W/50 (equivalent): 3.5 litres |
| Front fork | AGIP F1 ATF DEXRON or CASTROL TQF (SAE 10)(equivalent): 350cc each leg |
| Front/back brake circuit and clutch | AGIP F1 brake fluid Super HD or CASTROL DOT4 disc brake fluid (equivalent) |
| Chain | AGIP Rocol chain lube spray or CASTROL chain lube (equivalent) |
| Odometer and revolution indicator cables | AGIP F1 grease
30 or CASTROL LM grease (equivalent) |
| WARNING! - Use of additives in fuel or lubricants is not allowed. |