Engine 400/640 Lc4 '99 - KTM 400-660 LC4 1998-2005 Repair Manual

11-20E
TECHNICAL DATA – ENGINE 400 / 640 LC4 '99
Engine
Design
Displacement
Bore / Stroke
Ratio
Fuel
Valve timing
Camshaft
Valve timing by 1 mm
valve clearance
Valve diameter
Valve clearance cold
Crank shaft bearing
Conrod bearing
Top end bearing
Piston
Piston rings
Engine lubrication
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
Carburetor
Carburetor setting number
Main jet
Needle jet
Idling jet
Jet needle
Needle position from top
Mixture adj. screw open
Throttle valve
Starting jet
Performance restrictor
400 LC4-E
Liquid-cooled single cylinder 4-stroke engine with balancer shaft and electric starter
398 ccm
89 / 64 mm
10,8 : 1
4 valves over rocker arm and 1 overhead camshaft, camshaft drive through single chain
IO 22° BTDC EO 60° BBDC
IC 47° ABDC EC 4° ATDC
Intake: 0,20 mm Exhaust: 0,20 mm
1 compression ring, 1 taper face ring, 1 oil scraper ring
contactless DC-CDI ignition with digital advanced system type KOKUSAN
liquid cooled, permanent rotation of cooling liquid through mechanic driven water pump
1 liter, 40% antifreeze, 60% water, at least –25 ° C (–13 ° F)
400 LC4 400 LC4
25 kW 31 kW
PHM 38 ND PHM 38 ND
100197 100197
130 130
AR 264 AR 264
50
K 23 K 23
2 nd 2 nd
1,5 turn 1,5 turn
50/1 50/1
45 (50, 55) 45 (50, 55)
slide stop 51 mm
unleaded premium gasoline with at least RON 95
249/1
Intake: 36 mm Exhaust: 30 mm
2 cylinder roller bearing
needle bearing
bronze bushing
forged/cast aluminium alloy
two Eaten-oilpumps
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 EA-9
0,90 mm
electric starter and kickstarter
640 LC4
25 kW
BST40-225
080298
142,5
689 X-6
45
50
6G5
3 rd
–
–
–
– slide stop 17 mm
640 LC4-E
625 ccm
101 / 78 mm
11 : 1
IO 13° BTDC EO 53° BBDC
IC 51° ABDC EC 11° ATDC
Intake: 0,15 mm Exhaust: 0,15 mm
640 LC4
37 kW
BST40-225
090298
142,5
689 X-6
45
6G5
3 rd
–
–
–
–