Technical Specifications - Engine - KTM 250 SX 2003 Owner's Handbook Manual

Engine
Desgin
Piston displacement
Bore / stroke
Fuel
Oil / gasolino ratio
Crankshaft bearing
Connecting rod bearing
Piston pin bearing
Piston
Piston ring
(upper edge piston -
Dimension "X"
upper edge cylinder)
Ingition timing
Spark plug
Electrode gap
(height of the
Dimension "Z"
control flap)
TVC start open
TVC fully open
38
Primary drive
Clutch
Transmission
Gear ratio
1 st gear
2 nd gea
3 rd gea
4 th gea
5 th gea
Gear lubrication
Ailable chain sprockets
Coolant
Ignition system
Generator output
Carburetor
Air- filter
BASIC CARBURETOR SETTING
Carburetor
Carburetor setting number
Main jet
Idling jet
Starting jet
Jet needle
Needle position from top
Slide
Air adjustment screw open
Performance restrictor
Power jet nozzle
TECHNICAL DATA - ENGINE – MOTOR
Liquid-cooled single-cylinder two-stroke engine with KTM Twin Valve Control exhaust system
unleaded SUPER fuel, research octane no 95, mixed with high-grade, two- stroke oil (Shell Advance Racing X)
1:40 – 1:60 when using high grade, two- stroke oil. When in dout,
please contact your importer or use 1:40 mix ratio to be on the safe side
multiple disc clutch in oil bath, hydraulically operated (Shell HF-E15)
1.3 liters, 40% antifreeze, 60% water, at least -25 °C (-13 °F)
250 SX
Keihin PWK 38-S AG
110202
178 (182)
50
85
N3CH(N3CW)
III
6,5
1
–
–
250 SX
249 cm
66,4 / 72 mm (2.62 / 2.84 in)
1 deep-groove ball bearing / 1 cylinder roller bearing
needle bearing
needle bearing
cast piston
one plain compression ring
0 + 0,1 mm (0 + 0.004 in)
1,9 mm vor OT
BR 8 ECM
0,60 mm
48,5 mm (1.9 in)
5200/min
7000/min
straight cut spur gears, primary ratio 26:72
5 speed, claw actuated
14:28
16:26
18:24
21:24
22:21
0,7 l engine oil 10W-40 (Shell Advanced Ultra 4)
13Z / 14Z / 15Z für Kette
KOKUSAN 2K-1
no generator
flat-slide carburetor, carburetor setting see table
wet foam type air filter insert
250 SX 2003
3
5 1
/ x / "
8 4