Technical Data; Engine; Sx Eu, 125 Sx Us; Sx Eu, 150 Sx Us - KTM 125 SX EU 2015 Owner's Manual

21

TECHNICAL DATA

21.1

Engine

21.1.1

125 SX EU, 125 SX US

Design
Displacement
Stroke
Bore
Crankshaft bearing
Conrod bearing
Piston pin bearing
Pistons
Piston rings
X (upper edge of piston to upper edge of cylinder)
Z (height of control flap)
Primary transmission
Clutch
Gearbox
Transmission ratio
1st gear
2nd gear
3rd gear
4th gear
5th gear
6th gear
Ignition
Ignition point (BTDC)
Spark plug
Spark plug electrode gap
Starting aid
21.1.2

150 SX EU, 150 SX US

Design
Displacement
Stroke
Bore
Crankshaft bearing
Conrod bearing
Piston pin bearing
Pistons
Piston rings
X (upper edge of piston to upper edge of cylinder)
Z (height of control flap)
Primary transmission
Clutch
Gearbox
Transmission ratio
1st gear
2nd gear
3rd gear
4th gear
1-cylinder 2-stroke engine, water-cooled, with reed intake and
exhaust control
124.8 cm³ (7.616 cu in)
54.5 mm (2.146 in)
54 mm (2.13 in)
1 grooved ball bearing/1 roller bearing
Needle bearing
Needle bearing
Aluminum cast
2 half keystone rings
0... 0.10 mm (0... 0.0039 in)
43.7 mm (1.72 in)
23:73
Multidisc clutch in oil bath/hydraulically activated
6-gear, claw shifted
13:32
15:30
17:28
20:28
19:23
22:24
Contactless controlled fully electronic ignition with digital igni-
tion adjustment, type Kokusan
1.4 mm (0.055 in)
NGK BR9 ECMVX
0.60 mm (0.0236 in)
Kick starter
1-cylinder 2-stroke engine, water-cooled, with reed intake and
exhaust control
143.6 cm³ (8.763 cu in)
58.4 mm (2.299 in)
56 mm (2.2 in)
1 grooved ball bearing/1 roller bearing
Needle bearing
Needle bearing
Aluminum cast
2 half keystone rings
0... 0.10 mm (0... 0.0039 in)
44.3 mm (1.744 in)
23:73
Multidisc clutch in oil bath/hydraulically activated
6-gear, claw shifted
13:32
15:30
17:28
20:28
97