7-27E
G
M
Ignition system
From the battery
1
the battery voltage is conducted via the main fuse
2
through the ignition lock
3
and the emergency OFF switch
4
,
which are both ON, to the side stand relay
5
.
The side stand relay conducts the battery voltage to the CDI unit
6
, if
at least one of the following requirements is met :
●
The side stand is up (side stand switch closed).
●
The transmission is switched to neutral (neutral switch closed).
●
The clutch is pulled (clutch switch closed).
The pulse generator
7
transmits a signal to the CDI unit
6
upon every
rotation of the crankshaft. In the CDI unit, the ignition point is
computed from this signal.
The ignition pulse is transmitted to the ignition coil
8
(i.e. an ignition
spark is generated).
NOTE: The ignition system is a digital high voltage capacitor ignition
that receives its power supply from the battery. Therefore, it works only
with an intact battery.
When the battery is discharged below the threshold level, the voltage
can, due to the starting process, drop below the minimum supply
voltage required by the ignition.
!
CAUTION
!
S
AFE AND FAULTLESS OPERATION OF THE DIGITAL IGNITION REQUIRES SPARK PLUG
CONNECTORS AND SPARK PLUGS WITH INTEGRATED RESISTANCE TYPE SUPPRESSORS
.
bl . . . . . . . . .blue
br . . . . . . . . .brown
ge . . . . . . . .yellow
gr . . . . . . . . .grey
g . . . . . . . . .green
o . . . . . . . . .orange
r . . . . . . . . . .red
ra . . . . . . . . .pink
s . . . . . . . . . .black
v . . . . . . . . .violet
w . . . . . . . . .white
1
2
3
4
5
6
7
8
9
1
Battery
2
Main fuse
3
Ignition lock
4
Emergency-off switch
5
Auxiliary relay
6
CDI
7
Pulse generator
8
Ignition coil
9
Side stand switch
ge-bl
ra
s-r
r-s
r
r
0
s
w
g
ge
ra
Summary of Contents for 400-660 LC4 1998-2005
Page 2: ......
Page 3: ...REPAIRMANUAL1998 2005 400 660 LC4 KTM Group Partner...
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Page 154: ...1 2 5 s g s g 3 6 7 43E...
Page 156: ...7 8 9 s g s g 3 7 45E...
Page 158: ...1 2 3 4 5 7 47E...
Page 160: ...6 9 10 11 7 49E...
Page 164: ......
Page 166: ......
Page 167: ...Repair manual KTM LC4 Art Nr 3 206 014 E 8 3E CARBURETOR MIKUNI BST 40...
Page 175: ...Repair manual KTM LC4 Art Nr 3 206 014 E 8 11E CARBURETOR DELL ORTO PHM 40 SD...
Page 179: ...Repair manual KTM LC4 Art Nr 3 206 014 E 8 15E CARBURETOR DELL ORTO PHM 38 ND...
Page 184: ...8 20E CARBURETOR DELL ORTO VHSB 38 QS...
Page 191: ...Repair manual KTM LC4 Art Nr 3 206 014 E 8 27E CARBURATOR KEIHIN FCR 41...
Page 203: ...8 39E Repair manual KTM LC4 Art Nr 3 206 014 E CARBURETOR KEIHIN FCR MX 41...
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Page 370: ...13 3E...
Page 371: ...Repair manual KTM LC4 Art Nr 3 206 014 E 13 4E...
Page 372: ...13 5E...
Page 373: ...Repair manual KTM LC4 Art Nr 3 206 014 E 13 6E...
Page 374: ...13 7E...
Page 375: ...Repair manual KTM LC4 Art Nr 3 206 014 E 13 8E...
Page 376: ...13 9E...
Page 377: ...Repair manual KTM LC4 Art Nr 3 206 014 E 13 10E KTM 400 640 SC 1998...
Page 378: ...13 11E...
Page 379: ...Repair manual KTM LC4 Art Nr 3 206 014 E 13 12E...
Page 380: ...13 13E...
Page 381: ...Repair manual KTM LC4 Art Nr 3 206 014 E 13 14E...
Page 382: ...13 15E...
Page 383: ...Repair manual KTM LC4 Art Nr 3 206 014 E 13 16E...
Page 384: ...13 17E...
Page 385: ...Repair manual KTM LC4 Art Nr 3 206 014 E 13 18E...
Page 386: ...13 19E...
Page 387: ...Repair manual KTM LC4 Art Nr 3 206 014 E 13 20E...
Page 388: ...13 21E...
Page 389: ...Repair manual KTM LC4 Art Nr 3 206 014 E 13 22E...
Page 390: ...13 23E...
Page 391: ...Repair manual KTM LC4 Art Nr 3 206 014 E 13 24E...
Page 392: ...13 25E...
Page 393: ...Repair manual KTM LC4 Art Nr 3 206 014 E 13 26E...
Page 394: ...13 27E...
Page 395: ...Repair manual KTM LC4 Art Nr 3 206 014 E 13 28E...
Page 396: ...13 29E...
Page 397: ...Repair manual KTM LC4 Art Nr 3 206 014 E 13 30E...
Page 398: ...13 31E...
Page 399: ...Repair manual KTM LC4 Art Nr 3 206 014 E 13 32E...
Page 400: ...13 33E...
Page 401: ...Repair manual KTM LC4 Art Nr 3 206 014 E 13 34E...
Page 402: ...13 35E 400 640 LC4 USA...
Page 403: ...Repair manual KTM LC4 Art Nr 3 206 014 E 13 36E 400 640 LC4 USA 2000...
Page 404: ...13 37E...
Page 405: ...Repair manual KTM LC4 Art Nr 3 206 014 E 13 38E KTM 620 SC 2001...
Page 406: ...13 39E...
Page 407: ...Repair manual KTM LC4 Art Nr 3 206 014 E 13 40E...
Page 408: ...13 41E...
Page 409: ...Repair manual KTM LC4 Art Nr 3 206 014 E 13 42E...
Page 410: ...13 43E...
Page 411: ...Repair manual KTM LC4 Art Nr 3 206 014 E 13 44E...
Page 412: ...13 45E...
Page 413: ...Repair manual KTM LC4 Art Nr 3 206 014 E 13 46E KTM 640 LC4 E 2001...
Page 414: ...13 47E 625 SuperComp 2002 SERVICE...
Page 415: ...Repair manual KTM LC4 Art Nr 3 206 014 E 13 48E KTM 625 SUPER COMPETITION 2002...
Page 416: ...13 49E SERVICE 640 LC4 ADVENTURE...
Page 417: ...Repair manual KTM LC4 Art Nr 3 206 014 E 13 50E KTM 640 LC4 ADVENTURE 2002...
Page 418: ...13 51E SERVICE DUKE 2002...
Page 419: ...Repair manual KTM LC4 Art Nr 3 206 014 E 13 52E KTM DUKE 2002...
Page 424: ...13 57E 660 SMC 2003...
Page 425: ...13 58E Repair manual KTM LC4 Art Nr 3 206 014 E KTM 660 SMC 2003...
Page 426: ...13 59E...
Page 427: ...13 60E Repair manual KTM LC4 Art Nr 3 206 014 E...
Page 428: ...13 61E...
Page 429: ...13 62E Repair manual KTM LC4 Art Nr 3 206 014 E...