Engine 400/620 Supercompetition '99 - KTM 400-660 LC4 1998-2005 Repair Manual

11-16E
TECHNICAL SPECIFICATIONS – ENGINE 400/620 Supercompetition '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
Liquid-cooled single cylinder 4-stroke engine with balancer shaft
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 42° ABDC EC 4° ATDC
Intake: 0,20 mm Exhaust: 0,20 mm
1 compression ring, 1 taper face ring, 1 oil scraper ring
contactless thyristor ignition with electronic advanced system type KOKUSAN
adjustment to max. 40 ° BTDC at 5000 rpm
liquid cooled, permanent rotation of cooling liquid through mechanic driven water pump
1 liter, 40% antifreeze, 60% water, at least –25°C (–13°F)
decompressor automatic and hand actuated, cold and hot start knob on carburetor
400 SC (20 kW)
400 SC
PHM 38 SD PHM 38 SD
300896 4894/6
150
DR 266 DR 270 (DR 272)
45
K 51 K 51
3 rd 2 nd
1,5 turn 1,5 turn
40
45
slide stop 22 mm
unleaded premium gasoline with a least RON 95
249/1
Intake: 36 mm Exhaust: 30 mm
2 cylinder roller bearing
needle bearing
bronze bushing
cast aluminium alloy
forced-feed lubrication through 2 Eaten-oilpumps
1,6 liters (0,42 US gallons)
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
12V 110W
NGK DPR8 EA-9
0,90 mm
620 SC (20 kW)
PHM 40 SD
110996
190 155
DR 268
45 45
K 51
3 rd
1,5 turn
40 40
45 45
– slide stop 26 mm
620 LC4
609 ccm
101 / 76 mm
10,4 : 1
IO 15° BTDC EO 52° BBDC
IC 54° ABDC EC 17° ATDC
Intake: 0,15 mm Exhaust: 0,15 mm
adjustment to max. 36 ° BTDC at 5000 rpm
620 SC
PHM 40 SD
4922
195
DR 272
45
K 51
2 nd
1,5 turn
40
45
–