KTM 540 SXC 1999, Owner'S Handbook Manual

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ENGLISH
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Engine 400 LC4 620 LC4
Design Liquid-cooled single cylinder 4-stroke engine with balancer shaft
Displacement 398 ccm 609 ccm
Bore / Stroke 89 / 64 mm 101 / 76 mm
Ratio 10,8 : 1 10,4 : 1
Fuel unleaded premium gasoline with a least RON 95
Valve timing 4 valves over rocker arm and 1 overhead camshaft, camshaft drive through single chain
Camshaft 249/1
Valve timing by 1 mm IO 22° BTDC EO 60° BBDC IO 15° BTDC EO 52° BBDC
valve clearence IC 42° ABDC EC 4° ATDC IC 54° ABDC EC 17° ATDC
Valve diameter Intake: 36 mm Exhaust: 30 mm
Valve clearence cold Intake: 0,20 mm Exhaust: 0,20 mm Intake: 0,15 mm Exhaust: 0,15 mm
Crank shaft bearing 2 cylinder roller bearing
Conrod bearing needle bearing
Top end bearing bronze bushing
Piston cast aluminium alloy
Piston rings 1 compression ring, 1 taper face ring, 1 oil scraper ring
Engine lubrication forced-feed lubrication through 2 Eaten-oilpumps with oil sump
Engine oil see below #
Engine oil quantity 1,6 liters (0,42 US gallons)
Primary ratio straight geared spur wheels 30 : 81 teeth
Clutch multi disc clutch in oil bath
Transmission 5-speed claw shifted
Gear ratio 1st 14:35
2nd 15:24
3rd 18:21
4th 20:19
5th 22:18
Ignition system contactless thyristor ignition with electronic advanced system type KOKUSAN 4K-3
Ignition timing adjustment to max. 40 ° BTDC at 5000 rpm adjustment to max. 36 ° BTDC at 5000 rpm
Generator 12V 110W
Spark plug NGK DPR8 EA-9
Spark plug gap 0,90 mm
Cooling system liquid cooled, permanent rotation of cooling liquid through mechanic driven water pump
Cooling liquid 1 liter, 40% antifreeze, 60% water, at least –25°C (–13°F)
Starting equipment decompressor automatic and hand actuated, cold and hot start knob on carburetor
TECHNICAL SPECIFICATIONS – ENGINE 400/620 SC, Supermoto 2000
BASIC CARBURETOR SETTING
Carburetor
Carburetor setting number
Main jet
Needle jet
Idling jet
Jet needle
Needle position from top
Mixture.adju. screw open
Throttle valve
Starting jet
Performance restrictor PHM 38 SD
300896
150
DR 266
45
K 51
3 rd
1,5 turn
40
45
slide stop 22 mm
PHM 38 SD
4894/6
190
DR 270 (DR 272)
45
K 51
2 nd
1,5 turn
40
45
–
PHM 40 SD
110996
155
DR 268
45
K 51
3 rd
1,5 turn
40
45
slide stop 26 mm
PHM 40 SD
4922
195
DR 272
45
K 51
2 nd
1,5 turn
40
45
–
400 SC (20 kW) 400 SC 620 SC (20 kW) 620 SC