Specifications

1
GENERAL INFORMATION
12
GB
ENGINE
Version EVO 250 EVO 300
Type Single-cylinder, 4-stroke Single-cylinder, 4-stroke
Bore x stroke 77 x 53,6 84 x 53,6
Displacement [cm
3
] 249,6 297
Pressure ratio 11,5:1 11,4:1
Fuel system carburetor carburetor
CARBURETOR
EVO 250 EVO 300
Version
Homologated Competition* Homologated Competition*
Carburetor type SE BSR33-79 SE BSR33-79
Main jet 120 127,5 120 120
Slow jet 17,5 27,5 17,5 27,5
Start jet 60 60 60 60
Needle 5D132 5D132 5D132 5D132
Needle position
(from top)
2° 3° 2° 3°
Air screw turns
(from all closed)
3+1/2 2+1/2 3+1/2 2
Spacer YES NO YES NO
* Such modifi cation makes the vehicle non-compliant with the road regulations
in force. Its use must be limited to the sole private circuits which are closed to
circulation.
Cooling system ......................................... forced liquid circulation by pump
Spark plug ............................................................................NGK CR7EB
Clutch ..................................................................................wet, multidisc