Beta EVO 2T Handbook

1
GENERAL INFORMATION
12
GB
ENGINE
Version EVO 125 EVO 200 EVO 250 EVO 300
Type
Single-cylin-
der, 2-stroke
Single-cylin-
der, 2-stroke
Single-cylin-
der, 2-stroke
Single-cylin-
der, 2-stroke
Bore x stroke 54 x 54 64 x 60.5 72.5 x 60,5 79 x 60.5
Displacement [cm
3
] 123.6 194.6 249.7 296.5
Pressure ratio 16.1:1 11.8:1 8.9:1 10.2:1
Fuel system
carburetor
without mixer
( 1,5% )
carburetor
without mixer
( 1,5% )
carburetor
without mixer
( 1,5% )
carburetor
without mixer
( 1,5% )
CARBURETOR
EVO 125 EVO 200 EVO 250 EVO 300
Version
Certif. Competition* Certif. Competition* Certif. Competition* Certif. Competition*
Carbure-
tor type
PWK 28 PWK 28 PWK 28 PWK 28
Main jet 112 130 x 125 42 125 102 125
Slow jet 35 55 x 48 105 48 42 48
Start jet 60 60 x 60 60 60 60 60
Needle JHL JJH x JJH LKK JJH JHQ JJH
Needle
position
(from top)
2° 4° x 4° 4° 4° 2° 4°
Air screw
turns
(from all
closed)
1
+
1/2
1
+
1/2
x
2
+
1/2
3
+
1/2
2
+
1/2
1/2
2
+
1/2
Spacer YES NO x NO 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 BR7ES
Clutch ..................................................................................wet, multidisc

Beta EVO 2T Specifications

General

Displacement	249 cc
Cooling System	Liquid cooled
Transmission	6-speed
Bore x Stroke	66.4 mm x 72 mm
Clutch	Wet multi-disc
Dry Weight	67 kg
Engine Type	2-stroke single
Front Suspension	Telescopic fork
Rear Suspension	Monoshock
Front Brake	Single disc
Rear Brake	Single disc
Fuel Capacity	2.5 liters
Frame	Aluminum