Engine 640 Lc4 2002 - KTM 400-660 LC4 1998-2005 Repair Manual

11-46E
TECHNICAL DATA – ENGINE 640 LC4
Engine
Design
Displacement
Bore / Stroke
Ratio
Fuel
Valve timing
Camshaft
Valve diameter
Valve clearence cold
Crank shaft bearing
Connecting rod bearing
Top end bearing
Piston
Piston rings
Engine lubrication
Engine oil
Engine oil quantity
Primary ratio
Clutch
Transmission
Gear ratio
Ignition system
Ignition timing
Generator
Spark plug
Spark plug gap
Cooling system
Cooling liquid
Starting equipment
BASIC CARBURETOR SETTING
640 LC4, SUPERMOTO
Type
Carb.-setting number
Main jet
Needle jet
Idling jet
Jet needle
Needle clip pos. f. top
Mixt. adj. screw open
Liquid-cooled single cylinder 4-stroke engine with balancer shaft and electric starter
unleaded premium gasoline with a least RON 95
4 valves over rocker arm and 1 overhead camshaft, camshaft drive through single chain
1 compression ring, 1 taper face ring, 1 oil scraper ring
contactless DC-CDI ignition with digital advanced system type KOKUSAN 4K-2
liquid cooled, permanent rotation of cooling liquid through mechanic driven water pump
1 liter, 40% antifreeze, 60% water, at least –25 ° C (–13 ° F)
640 LC4 ADVENTURE
BST40-225
090298
142,5
689 X-6
45
6G5
3.
2,25
640 LC4
624,6 ccm
101 / 78 mm
11 : 1
249/1
Intake: 36 mm Exhaust: 30 mm
0,15 mm Exhaust: 0,15 mm
2 cylinder roller bearing
needle bearing
bronze bushing
forged aluminium alloy
two oilpumps
10W-40 (Shell Advance Ultra 4)
appr. 2,1 liters including frame
straight geared spur wheels 30 : 81 teeth
multi disc clutch in oil bath
5-speed claw shifted
1st 14:35
2nd 15:24
3rd 18:21
4th 20:19
5th 22:18
adjustment to max. 38° BTDC at 6000 rpm
12V 200W
NGK DPR8 EA9
0,9 mm
electric starter and kickstarter
640 DUKE
40 kW
BST40-225
100299
145
689 X-6
45
6G5
3.
2,25
2002