Technical Data; Engine; Engine Tightening Torques - KTM 250 XC TPI Owner's Manual

21.1

Engine

Design
Displacement (250 XC TPI US)
Displacement (300 XC TPI US)
Stroke
Hole (250 XC TPI US)
Hole (300 XC TPI US)
Exhaust valve, beginning of adjustment
Crankshaft bearing
Conrod bearing
Piston pin bearing
Piston
Piston rings (250 XC TPI US)
Piston rings (300 XC TPI US)
X distance (upper edge of piston to upper edge of
cylinder)
Z distance (height of control flap) (250 XC TPI US)
Z distance (height of control flap) (300 XC TPI US)
Primary transmission
Clutch
Transmission
Transmission ratio
first-gear
second-gear
third-gear
fourth-gear
fifth-gear
sixth-gear
Alternator
Ignition system
Spark plug
Spark plug electrode gap
Starting aid
21.2

Engine tightening torques

Screw, inner membrane sheets
Screw, membrane support plate
Screw, outer membrane sheets
Screw, angle lever, exhaust control
Screw, bearing retainer
Screw, clutch spring retainer
1-cylinder 2-stroke engine, water-cooled, with reed
intake, exhaust control and transfer duct injection
249 cm³ (15.19 cu in)
293.15 cm³ (17.8892 cu in)
72 mm (2.83 in)
66.4 mm (2.614 in)
72 mm (2.83 in)
5,500 rpm
1 grooved ball bearing/1 roller bearing
Needle bearing
Needle bearing
Cast aluminum
2 half keystone rings
2 rectangular rings
0 ... 0.10 mm (0 ... 0.0039 in)
49.0 mm (1.929 in)
49.5 mm (1.949 in)
26:73
Multidisc clutch in oil bath/hydraulically activated
6 gear transmission, claw shifted
15:31
16:25
20:25
22:23
25:22
26:20
12 V, 196 W
Contactless controlled fully electronic ignition with
digital ignition adjustment
NGK BR 7 ES
0.6 mm (0.024 in)
Electric starter system
EJOTDELTA PT ® 35x25
EJOTDELTA PT ® 30x12
EJOTDELTA PT ® 30x6
M5
M5
M5

TECHNICAL DATA 21

1 Nm (0.7 lbf ft)
1 Nm (0.7 lbf ft)
1 Nm (0.7 lbf ft)
6 Nm (4.4 lbf ft)
Loctite
6 Nm (4.4 lbf ft)
Loctite
6 Nm (4.4 lbf ft)
® 243™
243™
®
127