Engine Ktm 640 Duke '99 - KTM 400-660 LC4 1998-2005 Repair Manual

11-24E
TECHNICAL DATA – ENGINE
Type
Design
Displacement
Bore / Stroke
Ratio
Fuel
Valve timing
Camshaft
Valve timing by 1 mm
valve clearence
Valve diameter
Valve clearence cold
Crank shaft bearing
Connecting rod bearing
Top end bearing
Piston
Piston rings
Engine lubrication
Engine oil
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
Carburetor
Carburetor setting number
Main jet
Needle jet
Idling jet
Jet needle
Needle position from top
Mixture.adju. screw open
Liquid-cooled single cylinder 4-stroke engine with balancer shaft and electric starter
4 valves over rocker arm and 1 overhead camshaft, camshaft drive through single chain
contactless DC- CDI ignition with digital advanced system type KOKUSAN
liquid cooled, permanent rotation of cooling liquid through mechanic driven water pump
640 DUKE
40 kW
BST40-225
100299
145
689 X-6
45
6G5
3 rd
2,25 turn
KTM 640 DUKE '99
640 LC4-E
625 ccm
101 / 78 mm
11,0 : 1
unleaded premium gasoline with a least RON 95
249° (249/1)
IO 13° BTDC
IC 53° ABDC
Intake: 36 mm
Intake: 0.15 mm Exhaust: 0.15 mm
2 cylinder roller bearing
needle bearing
bronze bushing
cast aluminium alloy
1 compression ring, 1 taper face ring, 1 oil scraper ring
2 Eaton-Oilpumps
2.1 liters including frame
straight geared spur wheels 30 : 81 teeth
multi disc clutch in oil bath
5-speed claw shifted
1st
2nd
3rd
4th
5th
adjustment to max. 38° BTDC at 6000 rpm
12V 200W
NGK DPR8 EA-9
0.90 mm
1 liter, 40% antifreeze, 60% water, at least –25° C (–13° F)
electric starter, kick starter
EO 53° BBDC
EC 11° ATDC
Exhaust: 30 mm
14:35
15:24
18:21
20:19
22:18