KTM 250 SX-F 2005 Repair Manual page 122

10-7
TECHNICAL DATA – ENGINE 250 SX-F, XC-F, XCF-W, EXC-F 2008
ENGINE
Design
Displacement
Bore/Stroke
Ratio
Fuel
Valve timing
Valve diameter Intake
Valve diameter Exhaust
Valve clearence cold Intake
Valve clearence cold Exhaust 0.12 - 0.17 mm
Crank shaft bearing
Connecting rod bearing
Top end bearing
Piston
Piston rings
Engine lubrication
Engine oil
Quantity of engine oil
Primary drive
Clutch
Transmission claw shifted
1st gear
2nd gear
3rd gear
4th gear
5th gear
6th gear
Ignition system
Generator
Spark plug
Cooling system
Cooling liquid
Starting equipment
BASIC CARBURATOR SETTING
Type Keihin FCR-MX
Main jet
Jet needle
Idling jet
Main air jet
Idling air jet
Needle position
Starting jet
Mixture control screw open
Slide
Performance restrictor
Leak jet
Hot start device
250 SX-F, XC-F
Liquid-cooled single cylinder 4-stroke engine
249.51 ccm
76 / 55 mm
12.8 : 1
unleaded fuel with at least RON 95 (USA = Premium PON 91)
4 valves controlled by finger levers and 2 camshafts,
driven by a pair of spur gears and a tooth-type chain
30.9 mm
26.5 mm
0.10 - 0.15 mm
2 cylinder roller bearings
needle bearing
bronze bushing
alluminium alloy forged
1 compression ring, 1 oil scraper ring
pressure circulation lubrication with 2 rotor pumps
full synthetic oil (Motorex Power Synt 4T 10W/50)
1.1 liters
22:68
multiple disc clutch in oil bath, hydraulically operated (brake fluid DOT 5.1)
6-speed
13:32
15:30
17:28
19:26
21:25
22:24
contactless DC-CDI ignition with digital advanced system by KOKUSAN
12 V 80 W at 5000 rpm, SX-F without generator
NGK CR 9 EBK
liquid cooled, permanent rotation of cooling liquid through mechanically driven water pump
1.2 liters, 50% antifreeze, 50% destilled water, at least -25° (-13° F)
Kick-and Electric starter; SX-F kickstarter only
250 SX-F 250 XC-F/XCF-W ZA 250 XCF-W USA
3925F 3900K
175 168
OBETP OBETP
40 40
200 200
100 100
4th from top 4th from top
85 85
1 1
15 15
– –
– –
2.5 mm –
250 XCF-W, EXC-F
6-speed
13:33
17:33
19:29
23:28
23:23
26:22
250 EXC-F EU, AUS 250 EXC-F Six Days
3900K 3900H
168 168
OBEKT OBDYS
42 42
200 200
100 100
3rd from top 3rd from top
85 65
1,5 1,25
15 15
– Slide stop
50 70
– –
3900K
172
OBETP
42
200
100
5th from top
85
1,25
15
–
70
–