Technical Data - Engine - KTM 400 EXC RACING Owner's Manual

TECHNICAL DATA - ENGINE

TYPE
Design
Displacement
Bore/Stroke
Ratio
Fuel
Valve timing
Camshaft
Valve diameter Intake
Valve diameter Exhaust
Valve clearence cold Intake
Valve clearence cold Exhaust
Crank shaft bearing
Connecting rod bearing
Top end bearing
Piston alluminium alloy -
Piston rings
Engine lubrication
52
Engine oil
Quantity of engine oil
Primary ratio
Clutch
Transmission claw shifted
Gear ratio
Gear
2nd Gear
3rd Gear
4th Gear
5th Gear
6th Gear
Ignition system
Generator
Spark plug
Spark plug gap
Cooling system
Cooling liquid
Starting equipment
»
250 EXC 400 EXC
Liquid-cooled single cylinder 4-stroke engine with balancer shaft
250 cm 3 398 cm 3
75 / 56,5 mm 89 / 64 mm 95 / 63,4 mm 89 / 72 mm
12 : 1
unleaded fuel with at least RON 95 (USA = Premium RON 91)
4 valves over rocker arm and 1 overhead camshaft, camshaft drive through single chain
5532 595/0121 590/5521 590/5521
28 mm 35 mm
24 mm 30 mm
0.12 mm (0.0047 in)
0.12 mm (0.0047 in)
2 cylinder roller bearing
needle bearing
bronze bushing
cast
1 compression ring, 1 oil scraper ring
pressure circulation lubrication with two rotor pumps
full synthetic oil (Motorex Power Synt 4T 10W/50)
1.25 liters
straight geared spur wheels 33:76 Z
multi disc clutch in oil bath
6-speed 6-speed
1st
14:38 14:34
16:36 17:31
19:34 19:28
21:32 22:26
23:30 24:23
22:25 26:21
contactless DC-CDI ignition with digital advanced system by KOKUSAN
12V 150W
NGK DCPR 8 E
0.6 mm (0.02367 in)
liquid cooled, permanent rotation of cooling liquid through mechanically driven water pump
1 liter, 40% antifreeze, 60% water, at least -25° (-13° F)
kick - electric starter
450 SX 450 MXC 450 EXC
449 cm 3 448 cm 3
11 : 1
35 mm (Titan) 35 mm
30 mm (Titan) 30 mm
forged cast
4-speed 6-speed 6-speed
16:32 16:32 14:34
18:30 18:30 17:31
20:28 20:28 19:28
22:26 22:26 22:26
- 24:24 24:23
- 21:18 26:21
- 12V 150W
kickstarter kick - electric starter
525 SX 525 MXC-G 525 EXC
525 MXC DESERT
510 cm 3
95 / 72 mm
55/21 590/5521
forged
4-speed 6-speed 6-speed
16:32 16:32 14:34
18:30 18:30 17:31
20:28 20:28 19:28
22:26 22:26 22:26
- 24:24 24:23
- 21:18 26:21
- 12V 150W
kickstarter kick - electric starter