10-27
TECHNICAL SPECIFICATIONS - ENGINE 250 SX 2010
ENGINE
Design
Liquid-cooled, single-cylinder, two-stroke engine with intake and exhaust control
Piston displacement
249 ccm
Bore / stroke
66.4 / 72 mm
Fuel
unleaded fuel with at least RON 95 (USA = Premium PON 91), mixed with high grade two stroke oil
Oil / gasoline ratio
1:60
when using high grade, two- stroke oil (Motorex Cross Power 2T).
Crankshaft bearing
1 deep-groove ball bearing / 1 cylinder roller bearing
Connecting rod bearing
needle bearing
Piston pin bearing
needle bearing
Piston
cast aluminum
Piston ring
two plain compression rings
Dimension „X“
0.0 + 0.1 mm
Ignition timing
1.9 mm (0.074 in) BTDC
Spark plug
NGK BR8 ECM
Electrode gap
0,60 mm
Dimension „Z“
47.5 mm
Exhaust control start open
5500/min
Exhaust control fully open
7000/7500/7900/min (red/yellow/green spring)
Primary drive
straight cut spur gears
Primary ratio
26 : 72
Available chain sprockets
13t /14t for chain 5/8 x 1/4”
Clutch
multiple disc clutch in oil bath, hydraulically operated
Motorex brake fluid DOT 5.1
Transmission
5 speed, claw actuated
Gear ratio
1st gear
“1S14” 14 : 28 “1S28”
2nd gear
“2S15” 15 : 24 “2S24”
3rd gear
“3S18” 18 : 24 “3S24”
4th gear
“4S21” 21 : 24 “4S24”
5th gear
“5S22” 22 : 21 “5S21”
6th gear
Gear lubrication
0,7 liter Motorex Top Speed 4T 15W50
Available chain sprockets
13Z / 14Z für Kette 5/8 x 1/4"
Coolant
1.2 litres, 50% anti freeze, 50% distilled water, at least -25 °C (-13 °F)
Ignition system
stator 2K-1/flywheel 2K-2
Carburetor
flat-slide carburetor, carburetor setting see table
Air-filter
wet foam type air filter insert
BASIC CARBURETOR SETTING
250 SX 2010
250 SX 2010 SAND TRACKS
Carburetor
Keihin PWK 36 S AG
Carburetor setting mark
FK0180
Main jet
158 (155, 160)
175
Idling jet
42 (40)
45
Starting jet
85
Jet needle
N1EI (N1EH)
NOZG
Needle position from top
3
4
Throttle valve
6.5
Air adjustment srew open
1
Summary of Contents for 125 SX 2010
Page 2: ...OWNERSMANUAL2010 250 SX 250 300 XC XC W EXC EXC SixDays ...
Page 3: ...OWNER S MANUAL 2010 125 SX 150 SX 250 SX Art no 3211480en ...
Page 91: ...TECHNICAL DATA SHOCK ABSORBER 89 Shock absorber oil p 95 SAE 2 5 ...
Page 93: ...91 ...
Page 222: ...119 ...
Page 223: ...WIRING DIAGRAM 120 ...
Page 226: ...WIRING DIAGRAM 123 ...
Page 304: ...1 2 3 4 7 12 Art No 3 206 088 E Repair manual KTM 250 300 ...
Page 306: ...bl bk 6 7 8 9 7 14 Art No 3 206 088 E Repair manual KTM 250 300 ...
Page 308: ...1 2 3 4 5 7 16 Art No 3 206 088 E Repair manual KTM 250 300 ...
Page 393: ...11 15 PERIODIC MAINTENANCE SCHEDULE 2010 250 SX ...
Page 394: ...11 16 Repair manual KTM 250 300 Art No 3 206 088 E ...
Page 396: ...11 18 Repair manual KTM 250 300 Art No 3 206 088 E ...
Page 397: ...11 19 ...
Page 409: ...EXC 250 300 2005 EXC SIX DAYS 250 300 05 06 12 11 ...
Page 413: ...EXC 250 300 2005 EXC SIX DAYS 250 300 05 06 12 15 ...
Page 414: ...EXC USA 250 2005 12 16 Art No 3 206 088 E Repair manual KTM 250 300 ...
Page 416: ...12 18 Repair manual KTM 250 300 Art No 3 206 088 E ...
Page 430: ...Repair manual KTM 250 300 Art No 3 206 088 E 12 32 250 EXC EXC Six Days EU AUS 2008 2009 ...
Page 431: ...12 33 250 300 XC USA 2008 250 CX W ZA 2008 2009 ...
Page 433: ...12 35 300 EXC E EXC E SixDays EU AUS 2008 2009 ...
Page 437: ...12 39 250 SX 2010 ...
Page 438: ...12 40 Repair manual KTM 250 300 Art No 3 206 088 E ...
Page 439: ...12 41 250 EXC EU 2010 ...
Page 440: ...12 42 Repair manual KTM 250 300 Art No 3 206 088 E ...
Page 441: ...12 43 250 300 EXC 2010 ...
Page 442: ...12 44 Repair manual KTM 250 300 Art No 3 206 088 E ...
Page 443: ...12 45 250 300 XC XC W 2010 ...
Page 444: ...12 46 Repair manual KTM 250 300 Art No 3 206 088 E ...
Page 445: ...REPAIRMANUAL2004 2010 2004 2005 DCC ...
Page 553: ...1 7 T 14031 Dismounting mounting tool ...
Page 559: ...2 6 Exploded view PDS 5018 SXS SMR 2005 2006 ...
Page 561: ...2 8 Exploded view PDS 5018 SXS 2007 ...
Page 739: ...1 7 T 14 030 Adaptor T 14 033 Assembling tool ...
Page 741: ...2 2 Repair manual WP Fork Closed Cartridge Art No 3 211 199 E Exploded view SXS 2005 ...
Page 746: ...2 7 Exploded view SXS 2006 ...
Page 751: ...2 12 Repair manual WP Fork Closed Cartridge Art No 3 211 199 E Exploded view SX 2007 ...
Page 756: ...2 17 Exploded view Fork SXS 2007 ...