| ENGINE |
| Bore | 92
mm |
| Stroke | 68 mm |
| Capacity | 904
cc |
| Compression ratio | 9:1 |
| Maximum power (crankshaft) | 88
HP at 8,000 rpm |
| Maximum torque (crankshaft) | 5 Nm at 6,350 rpm |
| Italian fiscal rating | 12HP |
| Maximum engine speed | 9,000 rpm
|
| IMPORTANT:
Under no circumstances should the engine rev
over 9,000 rpm. |
|
| VALVE TIMING |
| DESMODROMIC
(tm) valve timing, two valves 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: | 43 mm diameter |
| Opens before TDC | 20
degrees |
| Closes after BDC | 88 degrees |
| Exhaust valve: | 38 mm diameter |
| Opens before BDC | 58
degrees |
| Closes after TDC | 20
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: |
| Provided with a two-barrel carburetor: WEBER 44DCNF
116 |
| Main data: |
| Choke | 36mm |
| Auxiliary venturi | 350 |
| Main jet | 160 |
| Air corrector jet | 175 |
| Idle jet | 60 |
| Idle air jet | 150 |
| Pump jet | 40 |
| Starting jet | F7/120 |
| Needle valve | 300 |
| Mechanical float level | 42 mm |
| Float weight | 14 gr
|
| Warning:
Use
of
additives
in
fules
or
lubricants
is
not
allowed |
|
| LUBRICATION |
| By
pressure
through
a
gear
pump,
oil
filters
through
net
filter
on
drain
plug,
and
filter
cartridge.
Low
pressure
indicator
placed
on
the
instrument
panel. |
|
| COOLING SYSTEM |
| Pressurized
system
using
radiator
and
thermostat.
A
water
pump,
which
is
controlled
by
the
camshaft,
circulates
fluid.
Expansion
tank
absorbs
the
thermal
expansion
of
coolant. |
|
| IGNITION SYSTEM |
| Electronic type with inductive discharge system |
| Make | Marelli |
| Type | Digiplex
(variable
advance) |
| Spark plugs |
| Make | CHAMPION RA6YC |
| Electrode gap | 0.6 mm |
|
| TRANSMISSION |
| Multi-disk
dry clutch
(7+7
with
13
friction
surfaces)
controlled by
hydraulic
circuit. Power driven by straight tooth gear set from engine to gearbox main shaft |
| Ratio | 62/31
=
2:1 |
| Six
speed with constant-mesh
gears,
the
idle
gears
are
supported
by
roller
cages.
Gear shift pedal on L/H side. |
| Gear ratios |
| 1st speed | 37/15
=
2.467:1 |
| 2nd speed | 30/17
=
1.765:1 |
| 3rd speed | 27/20
=
1.350:1 |
| 4th speed | 24/22
=
1.090:1 |
| 5th
speed | 23/24
=
0.958:1 |
| 6th speed | 24/28
=
0.857:1 |
| Transmission between gearbox and rear wheel through chain |
| Make | REGINA |
| Type | 135-OR |
| Dimensions | 1/4" x 5/8" |
| Final drive ratio | 15/40
=
1:0.375
|
|
| BRAKES |
| Front |
| Twin drilled
cast iron
disc |
| 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
cast iron
disc |
| Disc diameter | 270 mm |
| Hydraulic pedal control on the R/H side |
| Swept area | 37.6 square cm |
| Brake caliper: |
| Make | BREMBO |
| Type | P2IO8N |
|
| FRAME |
| Cantilever
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 | 125 mm |
| Rear |
| Swinging fork with oil-dynamic adjustable mono shock "SOFT DAMP" |
| Make | MARZOCCHI |
| Type | Duoshock
38
Remoto |
| Wheel stroke | 135 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 system 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 |
| 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-19 Ah |
| Alternator:
350w |
| Electronic regulator:
12v
25a |
| Start motor:
12v
-
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 | 139.5 |
|
| WEIGHTS |
| Dry | 451.94 LB |
| Kerb | 650
LB |
| With pilot only | 804.67
LB |
| REFUELINGS | TYPE and QUANTITY |
| Fuel tank,
reserve included | 22 litres |
| Crankcase sump and filter | AGIP SINT
2000
3.5 litres |
| Front fork | AGIP F1 ATF DEXRON |
| Cooling | AGIP
Permanent
fluid:
3.3
liters |
| Front/back brake circuit and clutch | AGIP F1 brake fluid Super HD |
| Chain | AGIP Rocol chain lube spray |
| Fork
pin
bearings | AGIP
GR
MU3
grease |
| Electrical
contacts
protection | AGIP
PI
160
spray |
| Odometer and revolution indicator cables | AGIP F1 grease |