21
TECHNICAL DATA
98
5th gear
19:23
6th gear
22:24
Ignition
Contactless controlled fully electronic ignition with digital igni-
tion adjustment, type Kokusan
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
Kick starter
21.1.3
250 SX EU, 250 SX US
Design
1-cylinder 2-stroke engine, water-cooled, with reed intake and
exhaust control
Displacement
249 cm³ (15.19 cu in)
Stroke
72 mm (2.83 in)
Bore
66.4 mm (2.614 in)
Exhaust valve - Beginning of adjustment
5,600 rpm
Exhaust valve - end of adjustment with red auxiliary spring
7,200 rpm
Exhaust valve - end of adjustment with yellow auxiliary spring
7,900 rpm
Exhaust valve - end of adjustment with green auxiliary spring
8,400 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 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)
48 mm (1.89 in)
Primary transmission
26:72
Clutch
Multidisc clutch in oil bath/hydraulically activated
Gearbox
5-gear, claw shifted
Transmission ratio
1st gear
14:28
2nd gear
15:24
3rd gear
18:24
4th gear
21:24
5th gear
22:21
Ignition
Contactless controlled fully electronic ignition with digital igni-
tion adjustment, type Kokusan
Ignition point (BTDC)
1.9 mm (0.075 in)
Spark plug
NGK BR 8 ECM
Spark plug electrode gap
0.60 mm (0.0236 in)
Starting aid
Kick starter
21.1.4
250 XC EU/US
Design
1-cylinder 2-stroke engine, water-cooled, with reed intake and
exhaust control
Displacement
249 cm³ (15.19 cu in)
Stroke
72 mm (2.83 in)
Bore
66.4 mm (2.614 in)
Exhaust valve - Beginning of adjustment
5,600 rpm
Exhaust valve - end of adjustment with red auxiliary spring
7,200 rpm
Exhaust valve - end of adjustment with yellow auxiliary spring
7,900 rpm
Exhaust valve - end of adjustment with green auxiliary spring
8,400 rpm
Crankshaft bearing
1 grooved ball bearing/1 roller bearing
Содержание 125 SX EU 2015
Страница 2: ......
Страница 112: ...21 TECHNICAL DATA 110 NDL Needle POS Needle position from above MJ Main jet Info Not for sandy surfaces...
Страница 124: ...23 AUXILIARY SUBSTANCES 122 Universal oil spray Recommended supplier Motorex Joker 440 Synthetic...
Страница 129: ...3213173en 3213173en 04 2014 KTM Sportmotorcycle AG 5230 Mattighofen Austria http www ktm com Photo Mitterbauer KTM...