General features

Dimensions, weight, capacities

Wheelbase mm/in 1480 / 58.27

Overall length mm/in 2260 / 88.97

Overall width mm/in 820 / 32.87

Overall height mm/in 1295 / 50.98

Saddle height mm/in 890 / 35.04

Min. ground clearance mm/in 280 / 11.02

Trail mm/in 114 / 4.49

Wet weight Kg/lb. 146 / 321.9

Fuel tank capacity  9,1

U.S. Gallons 2.4

Imp. Gallons 2.0

Transmission oil 2,00ltrs

U.S. Quarts 2.11

Imp. Quarts 1.76

Engine Characteristics

Type Single cylinder, four stroke

Bore mm/in 98 / 3.85

Stroke mm/in 76,4 / 3.01

Displacement cm /cu.in 576,28 / 35.15

Compression ratio 9:1

Starting Electric Cooling By liquid Water radiator N° 2 With electric fan

Timing system

Type "SOHC", 4 valve

Valve timing

With valve clearance mm/in 0,3 / 0.12

Intake

Open 43° B.T.D.C.

Closes 78° A.B.D.C

Exhaust

Open 84° B.B.D.C.

Closes 34° A.T.D.C

Tappet clearance (cold engine)

Intake mm/in 0,05 / 0.002

Exhaust mm/in 0,05 / 0.002

Lubrication

Type - Forced lubrication with double pump

Ignition

Type - C.D.I. electronic, with adjustable advance

Spark plug type “NGK" C 7E / “CHAMPION” G59C

Spark plug gap mm/in 0,6 - 0,7 / 0,0236 - 0.0275

Fuel system

Carburetor manufacturer and type DELL’ORTO" PHM 40 DS/MIKUNI" BST 40

Venturi diameter mm/in. 40 / 1.57

Clutch

Type Wet, multi-plate type; mechanic control

Driving disc no 8

Driven disc no 7

Primary drive

Engine sprocket Teeth 32

Clutch gear Teeth 75

Transmission ratio 2,343

Transmission

Type Constant mesh gear type

Speed gears no 6

Internal ratios

1st . . . . .2,615 (34/13)

2nd . . . . .1,812 (29/16)

3rd . . . . .1,350 (27/20)

4th . . . . .1,091 (24/22)

5rd . . . . .0,916 (22/24)

6th . . . . .0,769 (20/26)

Secondary drive

Transmission sprocket Teeth 15

Rear wheel sprocket Teeth 45

Transmission ratio 3,000

Driving chain Manufacturer and type REGINA" 135ORN-A, 5/8"x1/4"D.I.D." 520V6 - OR, 5/8"x1/4"

Overall ratios

1st . . . . . . . . . .18,389

2nd . . . . . . . . . .12,744

3rd . . . . . . . . . . .9,492

4th . . . . . . . . . . .7,670

5rd . . . . . . . . . . .6,445

6th . . . . . . . . . . .5,409

Chassis

Frame

Type Steel single tube cradle with steel round tubes; rear frame with steel square tubes

Front suspension

Type "Upside-Down" telescopic hydraulic fork with advanced axle; compression and rebound stroke adjustment

Fork legs dia mm/in 45 / 1.77

Travel on legs axis mm/in 250 / 9.84

Front fork manufacturer "MARZOCCHI"

Rear suspension

Type Progressive "Soft Damp" type with single hydraulic shock absorber; spring preload adjustment, compression and rebound stroke adjustment

Wheel travel mm/in. 285 / 11.2

Shock absorber manufacturer “SACHS"

Front brake

Type "BREMBO", fixed disc type with floating caliper Disc dia mm/in 260 / 10.24

Rear brake Type "BREMBO", fixed disc type with floating caliper Disc dia mm/in 220 / 8.66

Front rim

Material Light alloy Size 1,60"x21"

Rear rim

Material Light alloy Size 2,5"x18"

Front tire Type  “METZELER” “PIRELLI” MT21 Size 90/90 - 21"

Rear tire Type “METZELER” “PIRELLI” MT21 Size 140/80 - 18"

Electrical equipment

Voltage12 V

Lamps wattage

Head light 55/60 W

Pilot light 3 W

Tail light 5 W

Stop light 21 W

Turn signals 10 W

Instruments light 2 W

Warning light 1,2/2 W

Battery 12 V - 12 Ah