Buell 2002 S3T - Page 397

7-8 2002 Buell S3T: Electrical
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TROUBLESHOOTING
When the engine will not start or when hard starting or miss-
ing indicates a faulty ignition system, see 4.16 MISFIRE. If
the problem persists, check primary and secondary resis-
tance of ignition coil with a coil tester. See Figure 7-8
● Primary resistance (1) should be 0.5-0.7 ohms.
●
Secondary resistance (2) should be 5.5-7.5K ohms.
If a coil tester is not available, use the following test.
NOTE
Coil will function without being attached to frame.
1. Substitute a new ignition coil by attaching it to any con-
venient point near the old coil. Transfer terminal wires to
new coil.
2. Attach new spark plug cables to coil and plugs.
3. Test system. If ignition trouble is eliminated by the tem-
porary installation of a new coil, careful inspect old coil
and cables for damage. The insulation on the cables may
be cracked or otherwise damaged allowing high tension
current to short to metal parts. This is most noticeable in
wet weather or after the motorcycle has been washed.
INSTALLATION
1. Attach coil to frame with screws and washers. Tighten to
4-6 ft-lbs (5-8 Nm).
2. See Figure 7-7 Attach connector (7) [83].
3. Connect front spark plug cable to connector (2) and rear
spark plug cable to connector (1).
4. Install fuel tank. See 4.36 FUEL TANK.
11WARNING1WARNING
After installing seat, pull upward on front of seat to be
sure it is locked in position. If seat is loose, it could shift
during vehicle operation and startle the rider, causing
loss of control which could result in death or serious
injury.
5. Install seat. See 2.35 SEAT.
6. Connect negative battery cable to battery.
Figure 7-6. Ignition Coil Wiring Diagram
ABC
FR
2
b0675x7x
2
1 1
Terminal B
+12 V
Terminal C
Rear Coil
Terminal A
Front Coil
1. Primary resistance should be 0.5-0.7 ohms.
2. Secondary resistance should be 5.5-7.5K ohms.
1
2
b0676x7x