Buell S1 Lightning, Workshop Manual

Page: 278 / 371

7-3
IGNITION SYSTEM
GENERAL
The vehicle uses a breakerless inductive-discharge ignition
system. The system has both a primary and secondary cir-
cuit. The primary circuit consists of the battery, ignition switch,
primary coil winding, computerized ignition timer and associ-
ated wiring. The secondary circuit consists of the secondary
coil, spark plugs and associated wiring. See
Figure 7-1.
The computerized ignition system contains three assemblies.
Ignition Module
The ignition module is mounted to the vehicle frame under a
protective cover; it is located to the right of the battery. The
ignition module has two functions. First, it computes the spark
advance for proper ignition timing. Second, it opens and
closes the low-voltage circuits between the battery and igni-
tion coil to produce high-voltage discharge to the spark plugs.
Figure 7-1. Ignition System Components
1
2
1. Pop rivet (2)
2. Timer cover
3. Screw (2)
4. Inner cover
5. Ignition gasket
6. Timer plate stud (2)
7. Bolt
8. Sensor assembly
9. Trigger rotor
10. Seal
11. Gearcase cover
12. Spark plug (2)
13. Ignition coil
4
5
6 7
11
12
15
14
13
20
21
19
17
16
23
22
18
3
8
9
10
14. Front spark plug cable
15. Rear spark plug cable
16. V.O.E.S. connector [P7]
17. V.O.E.S.
18. Cable strap
19. Terminal pin
20. Timer connector [P16]
21. Secondary lock
22. Ignition module connector [P10]
23. Ignition module
24. Washer (2)
25. Screw (2)
24
25
b0223x7x