Stop Circuit - Mercury 40 Service Manual

Stop Circuit

To stop the engine, the stop switch is closed allowing
the capacitor charge current from the stator to drain
directly to ground.
NOTE: The CDM contains a zener diode (not shown
for clarity). This diode prevents overcharging of the
capacitor (and possible failure) if the SCR does not
receive a trigger pulse.
CAPACITOR-
COIL-
SCR-
DIODE-
a - Battery Charging Coils
b - Trigger Coils
c - Capacitor Charge Coils
d - CDM #1
e - CDM #2
2A-12 - ELECTRICAL
a
S
N
N
S
3
+
_ _
N S
1
+
+
2
_
N
S
N
S
j YEL
YEL
BLK
BRN
Return Voltage
b
S
N
S
N
c
WHT/GRN
GRN/WHT
WHT
i
BLK/YEL
f - CDM #3
g - Rev. Limiter (Not Used On All Models)
h - To Ignition Switch
i - Stop Switch
j - To Voltage Regulator
d
e
f
PPL
g
BLK
h
90-852572R1 JANUARY 1998