KTM Supermoto 640LC4 - Manual (Page 40)

ENGLISH
39
Engine 640 LC4
Design Liquid-cooled single cylinder 4-stroke engine with balancer shaft and electric starter
Displacement 624,6 ccm
Bore / Stroke 101 / 78 mm
Ratio 11 : 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 diameter Intake: 36 mm Exhaust: 30 mm
Valve clearence cold 0,15 mm Exhaust: 0,15 mm
Crank shaft bearing 2 cylinder roller bearing
Connecting rod bearing needle bearing
Top end bearing bronze bushing
Piston forged/cast aluminium alloy
Piston rings 1 compression ring, 1 taper face ring, 1 oil scraper ring
Engine lubrication two Eaton-oilpumps
Engine oil see bellow #
Engine oil quantity appr. 2,1 liters including frame
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 DC-CDI ignition with digital advanced system type KOKUSAN
Ignition timing adjustment to max. 38° BTDC at 6000 rpm
Generator 12V 200W
Spark plug NGK DPR8 EA9
Spark plug gap 0,9 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 electric starter and kickstarter
ŀ Ł
– + 0°C
32°F
15W 40
15W 50 10W 40
10W 50
API: SG, SH
TEMPERATUR
Engine oil
Only use fully synthetic branded oils (Shell Advance Ultra 4) meeting or
surpassing the quality requirements of API classes SG or SH (see specifica-
tions on the container).
! CAUTION !
P OOR OIL QUALITY OR MINOR QUANTITY EFFECT EARLY ENGINE - WEAR .
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