TECHNICAL DATA - ENGINE
76
13.1
125 SX
Design
1-cylinder 2-stroke engine, water-cooled, with reed intake and
exhaust control
Displacement
124.8 cm³ (7.616 cu in)
Stroke
54.5 mm (2.146 in)
Bore
54 mm (2.13 in)
Crankshaft bearing
1 grooved ball bearing/1 roller bearing
Conrod bearing
Needle bearing
Piston pin bearing
Needle bearing
Pistons
Aluminum cast
Piston rings
2 half keystone rings
X (upper edge of piston to upper edge of cylinder)
0… 0.10 mm (0… 0.0039 in)
Z (height of control flap)
43.5 mm (1.713 in)
Primary transmission
23:73
Clutch
Multidisc clutch in oil bath/hydraulically activated
Gearbox
6-gear, claw shifted
Transmission ratio
1st gear
13:32
2nd gear
15:30
3rd gear
17:28
4th gear
20:28
5th gear
19:23
6th gear
22:24
Ignition
Kokusan 2K-1
Ignition point (BTDC)
1.4 mm (0.055 in)
Spark plug
NGK BR9 ECMVX
Spark plug electrode gap
0.60 mm (0.0236 in)
Starting aid
Kickstarter
13.2
150 SX
Design
1-cylinder 2-stroke engine, water-cooled, with reed intake and
exhaust control
Displacement
143.6 cm³ (8.763 cu in)
Stroke
58.4 mm (2.299 in)
Bore
56 mm (2.2 in)
Crankshaft bearing
1 grooved ball bearing/1 roller bearing
Conrod bearing
Needle bearing
Piston pin bearing
Needle bearing
Pistons
Aluminum cast
Piston rings
2 half keystone rings
X (upper edge of piston to upper edge of cylinder)
0… 0.10 mm (0… 0.0039 in)
Z (height of control flap)
43.1 mm (1.697 in)
Primary transmission
23:73
Clutch
Multidisc clutch in oil bath/hydraulically activated
Gearbox
6-gear, claw shifted
Transmission ratio
1st gear
13:32
2nd gear
15:30
3rd gear
17:28
4th gear
20:28
5th gear
19:23
6th gear
22:24
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 ...