
EN
EN - 9
TECHNICAL DATA
ENGINE
Type .....................single cylinder, 4 stroke
Cooling liquid with electric fan
Bore .....................................3.81 in.
Stroke ..................................2.67 in.
Displacement ........................ 30.56 cu. in
Compression ratio..........................12,9:1
Starting .................................electric
(with automatic decompressor)
TIMING SYSTEM
Type ..........double overhead camshaft; 4 valve
Valve clearance (with engine cold)
Intake..........................0.004 ÷ 0,006 in.
Exhaust ........................0.007 ÷ 0,009 in.
LUBRICATION
Type ................Dry sump with two oil pump
rotor and cartridge filter
IGNITION
Type ..............Electronic, inductive discharge,
with adjustable advance (digital control)
Spark plug type........................NGK CR8E
Spark plug gap .........................0.027 in.
FUEL SYSTEM
Type .....................Electronic injection feed
PRIMARY DRIVE
Drive pinion gear- Clutch ring gear.......Z 23- Z 63
Transmission ratio .........................2,739
CLUTCH
Type .................oil bath multiple disc clutch,
hydraulic control
TRANSMISSION
Type ...................constant mesh gear type
Transmission ratio
1st gear ..........................2,000 (z 28/14)
2nd gear ...........................1,611 (z 29/18)
3rd gear...........................1,333 (z 24/18)
4th gear..........................1,086 (z 25/23)
5 th gear .........................0,920 (z 23/25)
6 th gear ..........................0,814 (z 22/27)
SECONDARY DRIVE
Transmission sprocket-
Rear wheel sprocket....................Z 15- Z 42
Transmission ratio .........................2,800
FRAME
Type .... single beam, double cradle in steel tubes;
rear frame in light alloy.
FRONT SUSPENSION
Type .........”Upside-down” telescopic hydraulic
front fork with advanced axle
(adjustable in compression and
rebound stroke); stanchions tubes Ø 1.89 in.
Legs axis stroke .........................9,84 in.
REAR SUSPENSION
Type ............progressive with hydraulic single
shock absorber (adjustable in compression
and rebound stroke)
Wheel stroke .............................11,41 in.
FRONT BRAKE
Type ....................floating disc Ø 12.59 mm
“Wave” type with hydraulic control
and fixed radial caliper
REAR BRAKE
Type ....................fixed disc, ø 9.45 in. with
hydraulic control and floating caliper
RIMS
Front.......................in light alloy: 3,50x17”
Rear ........................in light alloy 4,25x17”