Technical Data; Engine; Engine Tightening Torques - KTM 250 EXC-F 2013 Owner's Manual

22

TECHNICAL DATA

22.1

Engine

Design
Displacement
Stroke
Bore
Compression ratio
Idle speed
Control
Valve diameter, intake
Valve diameter, exhaust
Valve clearance
Exhaust at: 20 °C (68 °F)
Intake at: 20 °C (68 °F)
Crankshaft bearing
Conrod bearing
Piston pin bearing
Pistons
Piston rings
Engine lubrication
Primary transmission
Clutch
Transmission ratio
1st gear
2nd gear
3rd gear
4th gear
5th gear
6th gear
Alternator
Light coil and charging coil
Ignition
Spark plug
Spark plug electrode gap
Cooling
Starting aid
22.2

Engine tightening torques

Jet, crank chamber ventilation
Oil jet for alternator cooling
Oil nozzle for conrod bearing lubrica-
tion
Oil jet for cam lever lubrication
Screw, ignition pulse generator
Screw, locking lever
Screw, oil filter cover
Screw, oil pump cover
Screw, stator
Fitting, starter motor cable connection
Locking screw for bearing
Screw, alternator cover
1-cylinder 4-stroke engine, water-cooled
248.60 cm³ (15.1706 cu in)
54.80 mm (2.1575 in)
76 mm (2.99 in)
13.2:1
2,050... 2,150 rpm
DOHC, four valves controlled via cam lever, drive via tooth-wheel
chain
30.0 mm (1.181 in)
26.0 mm (1.024 in)
0.12... 0.17 mm (0.0047... 0.0067 in)
0.10... 0.15 mm (0.0039... 0.0059 in)
2 cylinder bearings
Needle bearing
Bronze bush
Forged light alloy
1 compression ring, 1 oil scraper ring
Pressure circulation lubrication with two rotary pumps
22:68
Multidisc clutch in oil bath/hydraulically activated
13:33
17:33
19:29
23:28
23:23
26:22
12 V, 168 W
Contactless controlled fully electronic ignition with digital igni-
tion adjustment, type Kokusan
NGK CR 9 EKB
0.8 mm (0.031 in)
Water cooling, permanent circulation of coolant by water pump
Electric starter/kickstarter
M4
M4
M4
M5
M5
M5
M5
M5
M5
M6
M6
M6
2 Nm (1.5 lbf ft)
2 Nm (1.5 lbf ft)
2 Nm (1.5 lbf ft)
4 Nm (3 lbf ft)
6 Nm (4.4 lbf ft)
6 Nm (4.4 lbf ft)
6 Nm (4.4 lbf ft)
6 Nm (4.4 lbf ft)
6 Nm (4.4 lbf ft)
4 Nm (3 lbf ft)
6 Nm (4.4 lbf ft)
10 Nm (7.4 lbf ft)
107
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Loctite 243™
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Loctite 243™
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Loctite 243™
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Loctite 243™
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Loctite 243™
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Loctite 243™
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Loctite 243™
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Loctite 243™
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Loctite 243™
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