Repair manual KTM LC4
Art.-Nr
. 3.206.014 -E
11-3E
Engine
400 LC4
540 LC4
Design
Liquid-cooled single cylinder 4-stroke engine with and without balancer shaft
Displacement
398 cm
3
538,5 cm
3
Bore / Stroke
89 / 64 mm
95 / 76 mm
Ratio
10,8 : 1
11,1 : 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° (249/1)
Valve timing by 1 mm
IO 22° BTDC EO 60° BBDC
IO 13° BTDC EO 53° BBDC
valve clearence
IC 42° ABDC EC 4° ATDC
IC 51° ABDC EC 11° ATDC
Valve diameter
Intake: 36 mm Exhaust: 30 mm
Valve clearence cold
Intake: 0,20 mm Exhaust: 0,20 mm
Intake: 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
forced-feed lubrication through two Eaton-Oilpumps with oil sump
Engine oil quantity
1,40liters
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 thyristor ignition with electronic advanced system type SEM
Ignition timing
400 SXC : adjustment to max. 38 ° BTDC at 6000 rpm
540 SXC: adjustment to max. 32 ° BTDC at 6000 rpm
Generator
12V 130W
Spark plug
NGK D8EA
Spark plug gap
0,6 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
decompressor automatic and hand actuated, cold and hot start knob on carburetor
TECHNICAL SPECIFICATIONS – ENGINE 400/540 SXC ‘98
BASIC CARBURETOR SETTING
Carburetor
Carburetor setting number
Main jet
Needle jet
Idling jet
Jet needle
Needle position from top
Mixture.adju. screw open
Throttle valve
Starting jet
Performance restrictor
PHM 38 ND
120198
140
AB 265
50
K 32
II
1,5 turn
50/1
45
–
PHM 38 ND
120198
140
AB 265
50
K 32
II
1,5 turn
50/1
45
slide stop 56mm
VHSB 38 QS
081297
185
FN 260
33
K 32
II
1,5 turn
50
40
–
400 SXC
400 SXC (20 kW)
540 SXC
VHSB 38 QS
091297
140 (185)
FN 260
33
K 32
II
1,5 turn
50
40
slide stop 36mm
540 SXC (20 kW)
Содержание 400-660 LC4 1998-2005
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