Technical Data - Engine; Capacity - Engine Oil; Capacity - Coolan - KTM 450 SX-F EU Repair Manual

TECHNICAL DATA - ENGINE
204
Design I-cylinder 4-stroke engine, water-cooled
Displacement 449.3 cm' (27.418 cu in)
Stroke
60.8 mm (2.394 in)
Bore 97 mm (3.82 in)
Compression ratio 12.5,1
Control
DOHC, four valves controlled via cam lever, drive via helical gear
pair and tooth-wheel chain
Valve diameter, intake 40.4 mm (1.591 in)
Valve diameter, exhaust
31.7 mm (1.248 in)
Valve clearance, cold, intake
0.07 ... 0.13 mm (0.0028 ... 0.0051 in)
Valve clearance, cold, exhaust 0.12 ... 0.18 mm (0.0047 ... 0.0071 in)
Crankshaft bearing 2 cylinder roller bearing
Conrad bearing Needle bearing
Piston pin bearing Bronze bush
Pistons Forged light alloy
Piston rings 1 compression ring, 1 oil scraper ring
Engine lubrication
Pressure circulation lubrication with 3 rotor pumps
Primary transmission
29,74
Clutch
Multidisc clutch in oil bath/hydraulically activated
Transmission ratio
1st gear 16,34
2nd gear 19,31
3rd gear
20,26
4th gear 23,25
5th gear 26,24
Alternator 12 V, 42 W
Ignition Contactless controlled fully electronic ignition with digital igni-
tion adj ustment
Spark plug NGK CR 9 EKB
Spark plug electrode gap 0.7 mm (0.028 in)
Cooling Water cooling, permanent circulation of coolant by water pump
Starting aid Electric starter
Ca
C!tJ -
enline oil
1 Engine oil
11.35 I (1.43 qt.) 1 Engine oil (SAE lOW/50) (00- p. 224)
Ca~c!tJ
- coolant
I
Coolant 1.2 I (1.3 qt.) Coolant (00- p. 224)
Coolant (mixed ready to use)
(00-
p. 224)