Ignition Component Description; Capacitor Discharge Module (Cdm); Trigger Coil; Stator Assembly - Mercury 40 Service Manual

Ignition Component
Description

Capacitor Discharge Module (CDM)

Each module contains an ignition coil and amplifier
circuitry which produces approximately 45,000 volts
at the spark plugs.

Trigger Coil

Located under flywheel. Is charged by single magnet
on flywheel hub. Trigger pulses are sent to CDM.
2A-14 - ELECTRICAL

Stator Assembly

Located under the flywheel in the stator assembly are
12 coils (6 for manual stator), 3 ignition charge coils
and 9 auxiliary (3 for manual) power coils wound in
series that provide voltage to the CDM's and battery/
auxiliary circuits respectively.

Flywheel

Contains 6 magnets (12 pole) around circumference.
Has one magnet on inner hub for trigger. Outer mag-
nets are for battery charge coils and ignition charge
coils.
NOTE: Electric start model flywheel shown.
90-852572R1 JANUARY 1998