KTM 125 SX 2010 Owner's Manual page 353

10-27
TECHNICAL SPECIFICATIONS - ENGINE 250 SX 2010
ENGINE
Design
Piston displacement
Bore / stroke
Fuel
Oil / gasoline ratio
Crankshaft bearing
Connecting rod bearing
Piston pin bearing
Piston
Piston ring
Dimension „X"
Ignition timing
Spark plug
Electrode gap
Dimension „Z"
Exhaust control start open
Exhaust control fully open
Primary drive
Primary ratio
Available chain sprockets
Clutch
Transmission
Gear ratio
1st gear
2nd gear
3rd gear
4th gear
5th gear
6th gear
Gear lubrication
Available chain sprockets
Coolant
Ignition system
Carburetor
Air-filter
BASIC CARBURETOR SETTING
Carburetor
Carburetor setting mark
Main jet
Idling jet
Starting jet
Jet needle
Needle position from top
Throttle valve
Air adjustment srew open
Liquid-cooled, single-cylinder, two-stroke engine with intake and exhaust control
249 ccm
66.4 / 72 mm
unleaded fuel with at least RON 95 (USA = Premium PON 91), mixed with high grade two stroke oil
1:60
when using high grade, two- stroke oil (Motorex Cross Power 2T).
1 deep-groove ball bearing / 1 cylinder roller bearing
needle bearing
needle bearing
cast aluminum
two plain compression rings
0.0 + 0.1 mm
1.9 mm (0.074 in) BTDC
NGK BR8 ECM
0,60 mm
47.5 mm
5500/min
7000/7500/7900/min (red/yellow/green spring)
straight cut spur gears
26 : 72
13t /14t for chain 5/8 x 1/4"
multiple disc clutch in oil bath, hydraulically operated
Motorex brake fluid DOT 5.1
5 speed, claw actuated
"1S14" 14 : 28 "1S28"
"2S15" 15 : 24 "2S24"
"3S18" 18 : 24 "3S24"
"4S21" 21 : 24 "4S24"
"5S22" 22 : 21 "5S21"
0,7 liter Motorex Top Speed 4T 15W50
13Z / 14Z für Kette 5/8 x 1/4"
1.2 litres, 50% anti freeze, 50% distilled water, at least -25 °C (-13 °F)
stator 2K-1/flywheel 2K-2
flat-slide carburetor, carburetor setting see table
wet foam type air filter insert
250 SX 2010
Keihin PWK 36 S AG
FK0180
158 (155, 160)
42 (40)
85
N1EI (N1EH)
3
6.5
1
250 SX 2010 SAND TRACKS
175
45
NOZG
4