5
ST SERIES
TECHNICAL DATA
ENGINE
125 250 300
Type
Single cylinder, liquid cooled, two-stroke
Displacement
123,70 cc
249,70 cc 294 cc
BoreXstroke
54X54 mm
72,8X60 mm 79X60 mm
Fuel
Premix with unleaded fuel (RON 98 minimum) and special injection 2 stroke oil,
Premix ratio : 1,5%
Cooling
Liquid, forced circulation
Ignition system
Hidria Digital
Spark plug
NGK BPMR6A
Electrodes gap
0.7 mm
Piston
Cast, graphite coated skirt
Gearbox oil
450 ml , ATF type
Primary drive
82 x 23 82 x 23 78 x 28
Gears
5 gears
1st
13 : 41
2nd
15 : 38
3rd
17 : 37
4th
21 : 30
5th
30 : 24
Secondary drive
9 X 42 10 x 42 9 X 44
Clutch
Hydraulic , diaphragm spring
Starting Geared, foldable kickstarter
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