Pilots Operating Handbook
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YL-MFG
Revision 7, Issue 1
4/6/2016
7.15 Ignition System
The engine is equipped with a dual ignition unit of a breaker less, capacitor discharge design, with
an integrated generator. The ignition unit needs no external power supply.
Two independent charging coils (1) located on the generator stator supply one ignition circuit each.
The energy is stored in capacitors of the electronic modules (2). At the moment of ignition 2 each of
the 4 external trigger coils (3) actuate the discharge of the capacitors via the primary circuit of the
dual ignition coils (4). The trigger coil (5) is provided for rev counter signal. Firing order: 1-4-2-3.
