TECHNICAL DATA - ENGINE
97
Primary transmission
26:72
Clutch
Multidisc clutch in oil bath/hydraulically activated
Gearbox
5-gear, claw shifted
Transmission ratio (250 XC EU/USA)
1st gear
14:30
2nd gear
16:26
3rd gear
18:24
4th gear
21:24
5th gear
22:21
Transmission ratio (250 EXC EU, 250 EXC SIX DAYS EU, 250 EXC AUS, 250 XC
‑
W USA)
1st gear
14:30
2nd gear
17:26
3rd gear
19:23
4th gear
20:20
5th gear
29:23
Ignition
Kokusan E
Ignition point (BTDC)
1.9 mm (0.075 in)
Spark plug
NGK BR 7 ES
Spark plug electrode gap
0.60 mm (0.0236 in)
Starting aid (250 EXC EU, 250 EXC SIX DAYS EU)
Kickstarter
Starting aid
Kickstarter and electric starter
15.5
All 300 models
Design
1-cylinder 2-stroke engine, water-cooled, with reed intake and
exhaust control
Displacement
293 cm³ (17.88 cu in)
Stroke
72 mm (2.83 in)
Bore
72 mm (2.83 in)
Exhaust valve - Beginning of adjustment
5,500 rpm
Exhaust valve - end of adjustment with red auxiliary spring
7,300 rpm
Exhaust valve - end of adjustment with yellow auxiliary spring
7,800 rpm
Exhaust valve - end of adjustment with green auxiliary spring
8,300 rpm
Crankshaft bearing
1 grooved ball bearing/1 roller bearing
Conrod bearing
Needle bearing
Piston pin bearing
Needle bearing
Pistons
Aluminum cast
Piston rings
2 rectangular rings
X (upper edge of piston to upper edge of cylinder)
0… 0.10 mm (0… 0.0039 in)
Z (height of control flap)
47.5 mm (1.87 in)
Primary transmission
26:72
Clutch
Multidisc clutch in oil bath/hydraulically activated
Gearbox
5-gear, claw shifted
Transmission ratio (300 XC EU/USA)
1st gear
14:30
2nd gear
16:26
3rd gear
18:24
4th gear
21:24
5th gear
22:21
Transmission ratio (300 EXC EU, 300 EXC SIX DAYS EU, 300 EXC AUS, 300 XC
‑
W USA)
1st gear
14:30
2nd gear
17:26
3rd gear
19:23
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 ...